fix linter error

add template output mode
fix link
2025-12-18 13:01:11 +01:00 · 2025-12-08 21:57:30 +01:00 · 2025-12-08 21:53:44 +01:00 · 2025-11-05 09:00:28 +01:00 · 2025-11-05 08:46:56 +01:00 · 2025-11-03 22:06:11 +01:00
73 changed files with 5526 additions and 1375 deletions
--- a/.gh-dash.yml
+++ b/.gh-dash.yml
@@ -0,0 +1,96 @@
+prSections:
+  - title: Responsible PRs
+    filters: repo:tlinden/tablizer is:open NOT dependabot
+    layout:
+      repoName:
+        hidden: true
+
+  - title: Responsible Dependabot PRs
+    filters: repo:tlinden/tablizer is:open dependabot
+    layout:
+      repoName:
+        hidden: true
+
+issuesSections:
+  - title: Responsible Issues
+    filters: is:open repo:tlinden/tablizer -author:@me
+    layout:
+      repoName:
+        hidden: true
+
+  - title: Note-to-Self Issues
+    filters: is:open repo:tlinden/tablizer author:@me
+    layout:
+      creator:
+        hidden: true
+      repoName:
+        hidden: true
+
+defaults:
+  preview:
+    open: false
+    width: 100
+
+keybindings:
+  universal:
+    - key: "shift+down"
+      builtin: pageDown
+    - key: "shift+up"
+      builtin: pageUp
+  prs:
+    - key: g
+      name: gitu
+      command: >
+        cd {{.RepoPath}} && /home/scip/bin/gitu
+    - key: M
+      name: squash-merge
+      command: gh pr merge --rebase --squash --admin --repo {{.RepoName}} {{.PrNumber}}
+    - key: i
+      name: show ci checks
+      command: gh pr checks --repo {{.RepoName}} {{.PrNumber}} | glow -p
+    - key: e
+      name: edit pr
+      command: ~/.config/gh-dash/edit-gh-pr {{.RepoName}} {{.PrNumber}}
+    - key: E
+      name: open repo in emacs
+      command: emacsclient {{.RepoPath}} &
+  issues:
+    - key: v
+      name: view
+      command: gh issue view --repo {{.RepoName}} {{.IssueNumber}} | glow -p
+    - key: l
+      name: add label
+      command: gh issue --repo {{.RepoName}} edit {{.IssueNumber}} --add-label $(gum choose bug enhancement question dependencies wontfix)
+    - key: L
+      name: remove label
+      command: gh issue --repo {{.RepoName}} edit {{.IssueNumber}} --remove-label $(gum choose bug enhancement question dependencies wontfix)
+    - key: E
+      name: open repo in emacs
+      command: emacsclient {{.RepoPath}} &
+
+theme:
+  ui:
+    sectionsShowCount: true
+    table:
+      compact: false
+      showSeparator: true
+  colors:
+    text:
+      primary: "#E2E1ED"
+      secondary: "#6770cb"
+      inverted: "#242347"
+      faint: "#b0793b"
+      warning: "#E0AF68"
+      success: "#3DF294"
+    background:
+      selected: "#1B1B33"
+    border:
+      primary: "#383B5B"
+      secondary: "#39386B"
+      faint: "#8d3e0b"
+
+repoPaths: 
+    :owner/:repo: ~/dev/:repo
+
+pager:
+  diff: delta
--- a/.github/ISSUE_TEMPLATE/bug_report.md
+++ b/.github/ISSUE_TEMPLATE/bug_report.md
@@ -7,7 +7,7 @@ assignees: TLINDEN

 ---

-**Describtion**
+**Description**
 <!-- Please provide a clear and concise description of the issue: -->


--- a/.github/ISSUE_TEMPLATE/feature_request.md
+++ b/.github/ISSUE_TEMPLATE/feature_request.md
@@ -7,7 +7,7 @@ assignees: TLINDEN

 ---

-**Describtion**
+**Description**
 <!-- Please provide a clear and concise description of the feature you desire: -->


--- a/.github/dependabot.yml
+++ b/.github/dependabot.yml
@@ -0,0 +1,10 @@
+version: 2
+updates:
+  - package-ecosystem: "gomod"
+    directory: "/"
+    schedule:
+      interval: "monthly"
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+        interval: "monthly"
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -1,58 +0,0 @@
-name: build-and-test-tablizer
-on: [push, pull_request]
-jobs:
-  build:
-    strategy:
-      matrix:
-        version: [1.17, 1.18, 1.19]
-        os: [ubuntu-latest, windows-latest, macos-latest]
-    name: Build
-    runs-on: ${{ matrix.os }}
-    steps:
-    - name: Set up Go 1.18
-      uses: actions/setup-go@v3
-      with:
-        go-version: ${{ matrix.version }}
-      id: go
-
-    - name: checkout
-      uses: actions/checkout@v3
-
-    - name: build
-      run: make
-
-    - name: test
-      run: make test
-
-  golangci:
-    name: lint
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/setup-go@v3
-        with:
-          go-version: 1.17
-      - uses: actions/checkout@v3
-      - name: golangci-lint
-        uses: golangci/golangci-lint-action@v3
-        #with:
-          # Optional: version of golangci-lint to use in form of v1.2 or v1.2.3 or `latest` to use the latest version
-          # version: v1.29
-
-          # Optional: working directory, useful for monorepos
-          # working-directory: somedir
-
-          # Optional: golangci-lint command line arguments.
-          # args: --issues-exit-code=0
-
-          # Optional: show only new issues if it's a pull request. The default value is `false`.
-          # only-new-issues: true
-
-          # Optional: if set to true then the all caching functionality will be complete disabled,
-          #           takes precedence over all other caching options.
-          # skip-cache: true
-
-          # Optional: if set to true then the action don't cache or restore ~/go/pkg.
-          # skip-pkg-cache: true
-
-          # Optional: if set to true then the action don't cache or restore ~/.cache/go-build.
-          # skip-build-cache: true
--- a/.gitignore
+++ b/.gitignore
@@ -0,0 +1,3 @@
+releases
+tablizer
+*.out
--- a/.goreleaser.yaml
+++ b/.goreleaser.yaml
@@ -0,0 +1,69 @@
+# vim: set ts=2 sw=2 tw=0 fo=cnqoj
+
+version: 2
+
+before:
+  hooks:
+    - go mod tidy
+
+gitea_urls:
+  api: https://codeberg.org/api/v1
+  download: https://codeberg.org
+  
+builds:
+  - env:
+      - CGO_ENABLED=0
+    goos:
+      - linux
+      - windows
+      - darwin
+      - freebsd
+
+archives:
+  - formats: [tar.gz]
+    # this name template makes the OS and Arch compatible with the results of `uname`.
+    name_template: >-
+      {{ .ProjectName }}_
+      {{- title .Os }}_
+      {{- if eq .Arch "amd64" }}x86_64
+      {{- else if eq .Arch "386" }}i386
+      {{- else }}{{ .Arch }}{{ end }}
+      {{- if .Arm }}v{{ .Arm }}{{ end }}_{{ .Tag }}
+    # use zip for windows archives
+    format_overrides:
+      - goos: windows
+        formats: [zip]
+      - goos: linux
+        formats: [tar.gz,binary]
+    files:
+      - src: "*.md"
+        strip_parent: true
+      - src: "docs/*"
+        strip_parent: true
+      - src: Makefile.dist
+        dst: Makefile
+    wrap_in_directory: true
+
+changelog:
+  sort: asc
+  filters:
+    exclude:
+      - "^docs:"
+      - "^test:"
+  groups:
+    - title: Improved
+      regexp: '^.*?(feat|add|new)(\([[:word:]]+\))??!?:.+$'
+      order: 0
+    - title: Fixed
+      regexp: '^.*?(bug|fix)(\([[:word:]]+\))??!?:.+$'
+      order: 1
+    - title: Changed
+      order: 999
+
+release:
+  header: "# Release Notes"
+  footer: >-
+
+    ---
+
+    Full Changelog: [{{ .PreviousTag }}...{{ .Tag }}](https://codeberg.org/scip/tablizer/compare/{{ .PreviousTag }}...{{ .Tag }})
--- a/.woodpecker/build.yaml
+++ b/.woodpecker/build.yaml
@@ -0,0 +1,36 @@
+matrix:
+  platform:
+    - linux/amd64
+  goversion:
+    - 1.24
+
+labels:
+  platform: ${platform}
+    
+steps:
+  build:
+    when:
+      event: [push]
+    image: golang:${goversion}
+    commands:
+      - go get
+      - go build
+
+  linter:
+    when:
+      event: [push]
+    image: golang:${goversion}
+    commands:
+      - curl -sSfL https://raw.githubusercontent.com/golangci/golangci-lint/HEAD/install.sh | sh -s -- -b $(go env GOPATH)/bin v2.5.0
+      - golangci-lint --version
+      - golangci-lint run ./...
+    depends_on: [build]
+
+  test:
+    when:
+      event: [push]
+    image: golang:${goversion}
+    commands:
+      - go get
+      - go test -v -cover
+    depends_on: [build,linter]
--- a/.woodpecker/image.yaml
+++ b/.woodpecker/image.yaml
@@ -0,0 +1,32 @@
+# https://woodpecker-ci.org/plugins/docker-buildx
+# enable Package unit and go to /scip/-/packages after building to link to proj
+
+variables:
+  - &repo codeberg.org/${CI_REPO_OWNER}/tablizer
+
+steps:
+  dryrun:
+    image: docker.io/woodpeckerci/plugin-docker-buildx:latest
+    settings:
+      dockerfile: Dockerfile
+      platforms: linux/amd64
+      dry_run: true
+      repo: *repo
+      tags: latest
+    when:
+      event: [pull_request]
+
+  publish:
+    image: docker.io/woodpeckerci/plugin-docker-buildx:latest
+    settings:
+      dockerfile: Dockerfile
+      platforms: linux/amd64
+      repo: *repo
+      registry: codeberg.org
+      tags: latest,${CI_COMMIT_SHA:0:8},${CI_COMMIT_TAG}
+      username: ${CI_REPO_OWNER}
+      password:
+        from_secret: REGISTRY_TOKEN
+    when:
+      event: [tag]
+      branch: main
--- a/.woodpecker/release.yaml
+++ b/.woodpecker/release.yaml
@@ -0,0 +1,15 @@
+# build release
+
+labels:
+  platform: linux/amd64
+    
+steps:
+  goreleaser:
+    image: goreleaser/goreleaser
+    when:
+      event: [tag]
+    environment:
+      GITEA_TOKEN:
+        from_secret: DEPLOY_TOKEN
+    commands:
+      - goreleaser release --clean --verbose
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,9 +4,9 @@ All notable changes to this project will be documented in this file.

 The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) and this project adheres to [Semantic Versioning](http://semver.org).

-## [v1.0.14](https://github.com/TLINDEN/tablizer/tree/v1.0.14) - 2023-01-23
+## [v1.0.14](https://codeberg.org/scip/tablizer/tree/v1.0.14) - 2023-01-23

-[Full Changelog](https://github.com/TLINDEN/tablizer/compare/v1.0.13...v1.0.14)
+[Full Changelog](https://codeberg.org/scip/tablizer/compare/v1.0.13...v1.0.14)

 ### Fixed

@@ -28,9 +28,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) a
 - updated dependencies (go module versions)


-## [v1.0.13](https://github.com/TLINDEN/tablizer/tree/v1.0.13) - 2022-11-03
+## [v1.0.13](https://codeberg.org/scip/tablizer/tree/v1.0.13) - 2022-11-03

-[Full Changelog](https://github.com/TLINDEN/tablizer/compare/v1.0.12...v1.0.13)
+[Full Changelog](https://codeberg.org/scip/tablizer/compare/v1.0.12...v1.0.13)

 ### Added

@@ -47,9 +47,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) a
  manpage.


-## [v1.0.12](https://github.com/TLINDEN/tablizer/tree/v1.0.12) - 2022-10-25
+## [v1.0.12](https://codeberg.org/scip/tablizer/tree/v1.0.12) - 2022-10-25

-[Full Changelog](https://github.com/TLINDEN/tablizer/compare/v1.0.11...v1.0.12)
+[Full Changelog](https://codeberg.org/scip/tablizer/compare/v1.0.11...v1.0.12)

 ### Added

@@ -72,14 +72,14 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) a
  
 ### Fixed

- Fixed  [Bug #5](https://github.com/TLINDEN/tablizer/issues/5), where
+- Fixed  [Bug #5](https://codeberg.org/scip/tablizer/issues/5), where
  matches have not been highlighted correctly in some rare cases.



-## [v1.0.11](https://github.com/TLINDEN/tablizer/tree/v1.0.11) - 2022-10-19
+## [v1.0.11](https://codeberg.org/scip/tablizer/tree/v1.0.11) - 2022-10-19

-[Full Changelog](https://github.com/TLINDEN/tablizer/compare/v1.0.10...v1.0.11)
+[Full Changelog](https://codeberg.org/scip/tablizer/compare/v1.0.10...v1.0.11)

 ### Added

@@ -101,9 +101,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) a



-## [v1.0.10](https://github.com/TLINDEN/tablizer/tree/v1.0.10) - 2022-10-15
+## [v1.0.10](https://codeberg.org/scip/tablizer/tree/v1.0.10) - 2022-10-15

-[Full Changelog](https://github.com/TLINDEN/tablizer/compare/v1.0.9...v1.0.10)
+[Full Changelog](https://codeberg.org/scip/tablizer/compare/v1.0.9...v1.0.10)

 ### Added

@@ -123,9 +123,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) a



-## [v1.0.9](https://github.com/TLINDEN/tablizer/tree/v1.0.9) - 2022-10-14
+## [v1.0.9](https://codeberg.org/scip/tablizer/tree/v1.0.9) - 2022-10-14

-[Full Changelog](https://github.com/TLINDEN/tablizer/compare/v1.0.8...v1.0.9)
+[Full Changelog](https://codeberg.org/scip/tablizer/compare/v1.0.8...v1.0.9)

 ### Added

@@ -137,9 +137,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) a



-## [v1.0.8](https://github.com/TLINDEN/tablizer/tree/v1.0.8) - 2022-10-13
+## [v1.0.8](https://codeberg.org/scip/tablizer/tree/v1.0.8) - 2022-10-13

-[Full Changelog](https://github.com/TLINDEN/tablizer/compare/v1.0.7...v1.0.8)
+[Full Changelog](https://codeberg.org/scip/tablizer/compare/v1.0.7...v1.0.8)

 ### Added

@@ -147,9 +147,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) a



-## [v1.0.7](https://github.com/TLINDEN/tablizer/tree/v1.0.7) - 2022-10-11
+## [v1.0.7](https://codeberg.org/scip/tablizer/tree/v1.0.7) - 2022-10-11

-[Full Changelog](https://github.com/TLINDEN/tablizer/compare/v1.0.6...v1.0.7)
+[Full Changelog](https://codeberg.org/scip/tablizer/compare/v1.0.6...v1.0.7)

 ### Added

@@ -165,9 +165,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) a



-## [v1.0.6](https://github.com/TLINDEN/tablizer/tree/v1.0.6) - 2022-10-05
+## [v1.0.6](https://codeberg.org/scip/tablizer/tree/v1.0.6) - 2022-10-05

-[Full Changelog](https://github.com/TLINDEN/tablizer/compare/v1.0.5...v1.0.6)
+[Full Changelog](https://codeberg.org/scip/tablizer/compare/v1.0.5...v1.0.6)

 ### Added

@@ -183,9 +183,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) a



-## [v1.0.5](https://github.com/TLINDEN/tablizer/tree/v1.0.5) - 2022-10-05
+## [v1.0.5](https://codeberg.org/scip/tablizer/tree/v1.0.5) - 2022-10-05

-[Full Changelog](https://github.com/TLINDEN/tablizer/compare/v1.0.4...v1.0.5)
+[Full Changelog](https://codeberg.org/scip/tablizer/compare/v1.0.4...v1.0.5)

 ### Added

@@ -203,9 +203,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) a
  


-## [v1.0.4](https://github.com/TLINDEN/tablizer/tree/v1.0.4) - 2022-10-04
+## [v1.0.4](https://codeberg.org/scip/tablizer/tree/v1.0.4) - 2022-10-04

-[Full Changelog](https://github.com/TLINDEN/tablizer/compare/v1.0.3...v1.0.4)
+[Full Changelog](https://codeberg.org/scip/tablizer/compare/v1.0.3...v1.0.4)

 ### Added

@@ -221,9 +221,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) a



-## [v1.0.3](https://github.com/TLINDEN/tablizer/tree/v1.0.3) - 2022-10-03
+## [v1.0.3](https://codeberg.org/scip/tablizer/tree/v1.0.3) - 2022-10-03

-[Full Changelog](https://github.com/TLINDEN/tablizer/compare/v1.0.2...v1.0.3)
+[Full Changelog](https://codeberg.org/scip/tablizer/compare/v1.0.2...v1.0.3)

 ### Added

@@ -237,9 +237,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) a



-## [v1.0.2](https://github.com/TLINDEN/tablizer/tree/v1.0.2) - 2022-10-02
+## [v1.0.2](https://codeberg.org/scip/tablizer/tree/v1.0.2) - 2022-10-02

-[Full Changelog](https://github.com/TLINDEN/tablizer/compare/v1.0.1...v1.0.2)
+[Full Changelog](https://codeberg.org/scip/tablizer/compare/v1.0.1...v1.0.2)

 ### Added

@@ -255,9 +255,9 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) a



-## [v1.0.1](https://github.com/TLINDEN/tablizer/tree/v1.0.1) - 2022-09-30
+## [v1.0.1](https://codeberg.org/scip/tablizer/tree/v1.0.1) - 2022-09-30

-[Full Changelog](https://github.com/TLINDEN/tablizer/compare/v1.0.0...v1.0.1)
+[Full Changelog](https://codeberg.org/scip/tablizer/compare/v1.0.0...v1.0.1)

 ### Added

@@ -271,8 +271,8 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/) a



-## [v1.0.0](https://github.com/TLINDEN/tablizer/tree/v1.0.0) - 2022-09-28
+## [v1.0.0](https://codeberg.org/scip/tablizer/tree/v1.0.0) - 2022-09-28

-[Full Changelog](https://github.com/TLINDEN/tablizer/compare/02a64a5c3fe4220df2c791ff1421d16ebd428c19...v1.0.0)
+[Full Changelog](https://codeberg.org/scip/tablizer/compare/02a64a5c3fe4220df2c791ff1421d16ebd428c19...v1.0.0)

 Initial release.
--- a/22
+++ b/22
@@ -50,11 +50,10 @@ ifdef HAVE_POD
 endif

 buildlocal:
-	go build -ldflags "-X 'github.com/tlinden/tablizer/cfg.VERSION=$(VERSION)'"
+	go build -ldflags "-X 'codeberg.org/scip/tablizer/cfg.VERSION=$(VERSION)'"

 release:
-	./mkrel.sh $(tool) $(version)
-	gh release create $(version) --generate-notes releases/*
+	gh release create $(version) --generate-notes

 install: buildlocal
 	install -d -o $(UID) -g $(GID) $(PREFIX)/bin
@@ -65,13 +64,12 @@ install: buildlocal
 clean:
 	rm -rf $(tool) releases coverage.out

-test:
-	go test -v ./...
-	bash t/test.sh
+test: clean
+	go test -count=1 -cover ./... $(OPTS)

 singletest:
-	@echo "Call like this: ''make singletest TEST=TestPrepareColumns MOD=lib"
-	go test -run $(TEST) github.com/tlinden/tablizer/$(MOD)
+	@echo "Call like this: 'make singletest TEST=TestPrepareColumns MOD=lib'"
+	go test -run $(TEST) codeberg.org/scip/tablizer/$(MOD) $(OPTS)

 cover-report:
 	go test ./... -cover -coverprofile=coverage.out
@@ -91,3 +89,11 @@ show-versions: buildlocal

 goupdate:
 	go get -t -u=patch ./...
+
+lint:
+	golangci-lint run
+
+# keep til ireturn
+lint-full:
+	golangci-lint run --enable-all --exclude-use-default --disable exhaustivestruct,exhaustruct,depguard,interfacer,deadcode,golint,structcheck,scopelint,varcheck,ifshort,maligned,nosnakecase,godot,funlen,gofumpt,cyclop,noctx,gochecknoglobals,paralleltest,forbidigo,gci,godox,goimports,ireturn,stylecheck,testpackage,mirror,nestif,revive,goerr113,gomnd
+	gocritic check -enableAll *.go
--- a/Makefile.dist
+++ b/Makefile.dist
@@ -0,0 +1,20 @@
+# -*-make-*-
+
+.PHONY: install all
+
+tool   = rpn
+PREFIX = /usr/local
+UID    = root
+GID    = 0
+
+all:
+	@echo "Type 'sudo make install' to install the tool."
+	@echo "To change prefix, type 'sudo make install PREFIX=/opt'"
+
+install:
+	install -d -o $(UID) -g $(GID) $(PREFIX)/bin
+	install -d -o $(UID) -g $(GID) $(PREFIX)/man/man1
+	install -d -o $(UID) -g $(GID) $(PREFIX)/share/doc
+	install -o $(UID) -g $(GID) -m 555 $(tool)  $(PREFIX)/sbin/
+	install -o $(UID) -g $(GID) -m 444 $(tool).1 $(PREFIX)/man/man1/
+	install -o $(UID) -g $(GID) -m 444 *.md $(PREFIX)/share/doc/
--- a/README.md
+++ b/README.md
@@ -1,12 +1,90 @@
-[![Actions](https://github.com/tlinden/tablizer/actions/workflows/ci.yaml/badge.svg)](https://github.com/tlinden/tablizer/actions)
-[![License](https://img.shields.io/badge/license-GPL-blue.svg)](https://github.com/tlinden/tablizer/blob/master/LICENSE)
-[![Go Report Card](https://goreportcard.com/badge/github.com/tlinden/tablizer)](https://goreportcard.com/report/github.com/tlinden/tablizer)
+[![status-badge](https://ci.codeberg.org/api/badges/15519/status.svg)](https://ci.codeberg.org/repos/15519)
+[![License](https://img.shields.io/badge/license-GPL-blue.svg)](https://codeberg.org/scip/tablizer/blob/master/LICENSE)
+[![Go Report Card](https://goreportcard.com/badge/codeberg.org/scip/tablizer)](https://goreportcard.com/report/codeberg.org/scip/tablizer)

 ## tablizer - Manipulate tabular output of other programs

 Tablizer  can   be  used   to  re-format   tabular  output   of  other
 programs. While you  could do this using standard unix  tools, in some
-cases it's a hard job.
+cases it's a hard job. With tablizer you can filter by column[s],
+ignore certain column[s] by regex, name or number. It can output the
+tabular data in a range of formats (see below). There's even an
+interactive filter/selection tool available.
+
+## FEATURES
+
+- supports csv, json or ascii format input from files or stdin
+- split any tabular input data by character or regular expression into columns
+- add headers if input data doesn't contain them (automatically or manually)
+- print tabular data as ascii table, org-mode, markdown, csv, shell-evaluable or yaml format
+- filter rows by regular expression (saves a call to `| grep ...`)
+- filter rows by column filter
+- filters may also be negations eg `-Fname!=cow.*` or `-v`
+- modify cells wih regular expressions
+- reduce columns by specifying which columns to show, with regex support
+- color support
+- sort by any field[s], multiple sort modes are supported
+- shell completion for options
+- regular used options can be put into a config file
+- filter TUI where where you can interactively sort and filter rows
+
+## Demo
+
+![demo cast](vhsdemo/demo.gif)
+
+
+## Usage
+
+```default
+Usage:
+  tablizer [regex,...] [file, ...] [flags]
+
+Operational Flags:
+  -c, --columns string               Only show the speficied columns (separated by ,)
+  -v, --invert-match                 select non-matching rows
+  -n, --numbering                    Enable header numbering
+  -N, --no-color                     Disable pattern highlighting
+  -H, --no-headers                   Disable headers display
+  -s, --separator <string>           Custom field separator
+  -k, --sort-by <int|name>           Sort by column (default: 1)
+  -z, --fuzzy                        Use fuzzy search [experimental]
+  -F, --filter <field[!]=reg>        Filter given field with regex, can be used multiple times
+  -T, --transpose-columns string     Transpose the speficied columns (separated by ,)
+  -R, --regex-transposer </from/to/> Apply /search/replace/ regexp to fields given in -T
+  -j, --json                         Read JSON input (must be array of hashes)
+  -I, --interactive                  Interactively filter and select rows
+      --auto-headers                 Generate headers if there are none present in input
+      --custom-headers a,b,...       Use custom headers, separated by comma
+
+
+Output Flags (mutually exclusive):
+  -X, --extended                     Enable extended output
+  -M, --markdown                     Enable markdown table output
+  -O, --orgtbl                       Enable org-mode table output
+  -S, --shell                        Enable shell evaluable output
+  -Y, --yaml                         Enable yaml output
+  -C, --csv                          Enable CSV output
+  -A, --ascii                        Default output mode, ascii tabular
+  -L, --hightlight-lines             Use alternating background colors for tables
+  -y, --yank-columns                 Yank specified columns (separated by ,) to clipboard,
+                                     space separated
+      --ofs <char>                   Output field separator, used by -A and -C. 
+
+Sort Mode Flags (mutually exclusive):
+  -a, --sort-age                     sort according to age (duration) string
+  -D, --sort-desc                    Sort in descending order (default: ascending)
+  -i, --sort-numeric                 sort according to string numerical value
+  -t, --sort-time                    sort according to time string
+
+Other Flags:
+  -r  --read-file <file>             Use <file> as input instead of STDIN
+      --completion <shell>           Generate the autocompletion script for <shell>
+  -f, --config <file>                Configuration file (default: ~/.config/tablizer/config)
+  -d, --debug                        Enable debugging
+  -h, --help                         help for tablizer
+  -m, --man                          Display manual page
+  -V, --version                      Print program version
+```

 Let's take this output:
 ```
@@ -22,13 +100,13 @@ to do this with tablizer:

 ```
 % kubectl get pods | tablizer 
-NAME(1)                      READY(2) STATUS(3)  RESTARTS(4)    AGE(5)
+NAME                         READY    STATUS     RESTARTS       AGE
 repldepl-7bcd8d5b64-7zq4l    1/1      Running    1 (69m ago)    5h26m
 repldepl-7bcd8d5b64-m48n8    1/1      Running    1 (69m ago)    5h26m
 repldepl-7bcd8d5b64-q2bf4    1/1      Running    1 (69m ago)    5h26m

 % kubectl get pods | tablizer -c 1,3
-NAME(1)                      STATUS(3)
+NAME                         STATUS
 repldepl-7bcd8d5b64-7zq4l    Running
 repldepl-7bcd8d5b64-m48n8    Running
 repldepl-7bcd8d5b64-q2bf4    Running 
@@ -66,21 +144,55 @@ You can also specify a regex pattern to reduce the output:

 ```
 % kubectl get pods | tablizer q2bf4
-NAME(1)                      READY(2) STATUS(3)  RESTARTS(4)    AGE(5)
+NAME                         READY    STATUS     RESTARTS       AGE
 repldepl-7bcd8d5b64-q2bf4    1/1      Running    1 (69m ago)    5h26m
 ```

+Sometimes a filter regex is to broad  and you wish to filter only on a
+particular column. This is possible using `-F`:
+```
+% kubectl get pods | tablizer -Fname=2
+NAME                            READY   STATUS  RESTARTS        AGE
+repldepl-7bcd8d5b64-q2bf4       1/1     Running 1 (69m ago)     5h26m
+```
+
+Here we filtered  the `NAME` column for `2`, which  would have matched
+otherwise on all rows.
+
 There are more output modes like org-mode (orgtbl) and markdown.

-## Demo
+You can also use it to modify certain cells using regular expression
+matching. For example:
+
+```shell
+kubectl get pods | tablizer -T4 -R '/ /-/'
+NAME                            READY   STATUS  RESTARTS        AGE
+repldepl-7bcd8d5b64-7zq4l       1/1     Running 1-(69m-ago)     5h26m
+repldepl-7bcd8d5b64-m48n8       1/1     Running 1-(69m-ago)     5h26m
+repldepl-7bcd8d5b64-q2bf4       1/1     Running 1-(69m-ago)     5h26m
+```
+
+Here, we modified the 4th column (`-T4`) by replacing every space with
+a dash. If you need to work with `/` characters, you can also use any
+other separator, for instance: `-R '| |-|'`.
+
+There's also an interactive mode, invoked with the option B<-I>, where
+you can interactively filter and select rows:
+
+<img width="937" height="293" alt="interactive" src="https://github.com/user-attachments/assets/0d4d65e2-d156-43ed-8021-39047c7939ed" />
+

-[![asciicast](demo/tablizer-demo.gif)](https://asciinema.org/a/9FKc3HPnlg8D2X8otheleEa9t)

 ## Installation

 There are multiple ways to install **tablizer**:

- Go to the [latest release page](https://github.com/tlinden/tablizer/releases/latest),
+- You can use [stew](https://github.com/marwanhawari/stew) to install tablizer:
+  ```default
+  stew install tlinden/tablizer
+  ```
+
+- Go to the [latest release page](https://codeberg.org/scip/tablizer/releases),
  locate the binary for your operating system and platform.
  
  Download it and put it into some directory within your `$PATH` variable.
@@ -93,7 +205,7 @@ There are multiple ways to install **tablizer**:
  
 - You can also install from source. Issue the following commands in your shell:
  ```
-  git clone https://github.com/TLINDEN/tablizer.git
+  git clone https://codeberg.org/scip/tablizer.git
  cd tablizer
  make
  sudo make install
@@ -105,10 +217,9 @@ hesitate to ask me about it, I'll add it.
 ## Documentation

 The  documentation  is  provided  as  a unix  man-page.   It  will  be
-automatically installed if  you install from source.  However, you can
-read the man-page online:
+automatically installed if  you install from source.

-https://github.com/TLINDEN/tablizer/blob/main/tablizer.pod
+[However, you can read the man-page online](https://codeberg.org/scip/tablizer/raw/branch/main/tablizer.pod).

 Or if you cloned  the repository you can read it  this way (perl needs
 to be installed though): `perldoc tablizer.pod`.
@@ -125,7 +236,42 @@ that's the best way for me to forget to do something.

 In order to report a bug, unexpected behavior, feature requests
 or to submit a patch, please open an issue on github:
-https://github.com/TLINDEN/tablizer/issues.
+https://codeberg.org/scip/tablizer/issues.
+
+## Prior Art
+
+When I started with tablizer I was not aware that other tools
+exist. Here is a non-exhausive list of the ones I find especially
+awesome:
+
+### [miller](https://github.com/johnkerl/miller)
+
+This is a really powerful tool to work with tabular data and it also
+allows other inputs as json, csv etc. You can filter, manipulate,
+create pipelines, there's even a programming language builtin to do
+even more amazing things.
+
+### [csvq](https://github.com/mithrandie/csvq)
+
+Csvq allows you to query CSV and TSV data using SQL queries. How nice
+is that? Highly recommended if you have to work with a large (and
+wide) dataset and need to apply a complicated set of rules.
+
+### [goawk](https://github.com/benhoyt/goawk)
+
+Goawk is a 100% POSIX compliant AWK implementation in GO, which also
+supports CSV and TSV data as input (using `-i csv` for example). You
+can apply any kind of awk code to your tabular data, there are no
+limit to your creativity!
+
+### [teip](https://github.com/greymd/teip)
+
+I particularly like teip, it's a real gem. You can use it to drill
+"holes" into your tabular data and modify these "holes" using small
+external unix commands such as grep or sed. The possibilities are
+endless, you can even use teip to modify data inside a hole created by
+teip. Highly recommended.
+

 ## Copyright and license

@@ -137,4 +283,4 @@ T.v.Dein <tom AT vondein DOT org>

 ## Project homepage

-https://github.com/TLINDEN/tablizer
+https://codeberg.org/scip/tablizer
--- a/TODO.md
+++ b/TODO.md
@@ -6,4 +6,3 @@

 - add --no-headers option

-
--- a/cfg/config.go
+++ b/cfg/config.go
@@ -1,5 +1,5 @@
 /*
-Copyright © 2022 Thomas von Dein
+Copyright © 2022-2025 Thomas von Dein

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -19,38 +19,118 @@ package cfg
 import (
 	"errors"
 	"fmt"
-	"github.com/gookit/color"
 	"os"
 	"regexp"
+	"strings"
+
+	"github.com/gookit/color"
+	"github.com/hashicorp/hcl/v2/hclsimple"
 )

-const DefaultSeparator string = `(\s\s+|\t)`
-const Version string = "v1.0.14"
+const (
+	Version  = "v1.5.12"
+	MAXPARTS = 2
+)

-var VERSION string // maintained by -x
+var (
+	DefaultConfigfile = os.Getenv("HOME") + "/.config/tablizer/config"
+	VERSION           string // maintained by -x

+	SeparatorTemplates = map[string]string{
+		":tab:":      `\s*\t\s*`,                               // tab but eats spaces around
+		":spaces:":   `\s{2,}`,                                 // 2 or more spaces
+		":pipe:":     `\s*\|\s*`,                               // one pipe eating spaces around
+		":default:":  `(\s\s+|\t)`,                             // 2 or more spaces or tab
+		":nonword:":  `\W`,                                     // word boundary
+		":nondigit:": `\D`,                                     // same for numbers
+		":special:":  `[\*\+\-_\(\)\[\]\{\}?\\/<>=&$§"':,\^]+`, // match any special char
+		":nonprint:": `[[:^print:]]+`,                          // non printables
+	}
+)
+
+// public config, set via config file or using defaults
+type Settings struct {
+	FG             string `hcl:"FG"`
+	BG             string `hcl:"BG"`
+	HighlightFG    string `hcl:"HighlightFG"`
+	HighlightBG    string `hcl:"HighlightBG"`
+	NoHighlightFG  string `hcl:"NoHighlightFG"`
+	NoHighlightBG  string `hcl:"NoHighlightBG"`
+	HighlightHdrFG string `hcl:"HighlightHdrFG"`
+	HighlightHdrBG string `hcl:"HighlightHdrBG"`
+}
+
+type Transposer struct {
+	Search  regexp.Regexp
+	Replace string
+}
+
+type Pattern struct {
+	Pattern   string
+	PatternRe *regexp.Regexp
+	Negate    bool
+}
+
+type Filter struct {
+	Regex  *regexp.Regexp
+	Negate bool
+}
+
+// internal config
 type Config struct {
-	Debug       bool
-	NoNumbering bool
-	Columns     string
-	UseColumns  []int
-	Separator   string
-	OutputMode  int
-	InvertMatch bool
-	Pattern     string
-	PatternR    *regexp.Regexp
+	Debug          bool
+	Numbering      bool
+	NoHeaders      bool
+	Columns        string
+	UseColumns     []int
+	YankColumns    string
+	UseYankColumns []int
+	Separator      string
+	OutputMode     int
+	InvertMatch    bool
+	Patterns       []*Pattern
+	UseFuzzySearch bool
+	UseHighlight   bool
+	Interactive    bool
+	InputJSON      bool
+	AutoHeaders    bool
+	CustomHeaders  []string
+	Template       string

-	SortMode       string
-	SortDescending bool
-	SortByColumn   int
+	SortMode        string
+	SortDescending  bool
+	SortByColumn    string // 1,2
+	UseSortByColumn []int  // []int{1,2}
+
+	TransposeColumns    string       // 1,2
+	UseTransposeColumns []int        // []int{1,2}
+	Transposers         []string     // []string{"/ /-/", "/foo/bar/"}
+	UseTransposers      []Transposer // {Search: re, Replace: string}

 	/*
 	 FIXME: make configurable somehow, config file or ENV
 	 see https://github.com/gookit/color.
 	*/
-	ColorStyle color.Style
+	ColorStyle        color.Style
+	HighlightStyle    color.Style
+	NoHighlightStyle  color.Style
+	HighlightHdrStyle color.Style

 	NoColor bool
+
+	// config file, optional
+	Configfile string
+
+	Settings Settings
+
+	// used for field filtering
+	Rawfilters []string
+	Filters    map[string]Filter //map[string]*regexp.Regexp
+
+	// -r <file>
+	InputFile string
+
+	OFS string
 }

 // maps outputmode short flags to output mode, ie. -O => -o orgtbl
@@ -62,6 +142,8 @@ type Modeflag struct {
 	Y bool
 	A bool
 	C bool
+	J bool
+	P bool // template
 }

 // used for switching printers
@@ -72,7 +154,9 @@ const (
 	Shell
 	Yaml
 	CSV
-	Ascii
+	ASCII
+	Json
+	Template
 )

 // various sort types
@@ -83,49 +167,104 @@ type Sortmode struct {
 }

 // default color schemes
-func Colors() map[color.Level]map[string]color.Color {
-	return map[color.Level]map[string]color.Color{
+func (conf *Config) Colors() map[color.Level]map[string]color.Color {
+	colors := map[color.Level]map[string]color.Color{
 		color.Level16: {
-			"bg": color.BgGreen, "fg": color.FgBlack,
+			"bg": color.BgGreen, "fg": color.FgWhite,
+			"hlbg": color.BgGray, "hlfg": color.FgWhite,
 		},
 		color.Level256: {
-			"bg": color.BgLightGreen, "fg": color.FgBlack,
+			"bg": color.BgLightGreen, "fg": color.FgWhite,
+			"hlbg": color.BgLightBlue, "hlfg": color.FgWhite,
 		},
 		color.LevelRgb: {
-			// FIXME: maybe use something nicer
-			"bg": color.BgLightGreen, "fg": color.FgBlack,
+			"bg": color.BgLightGreen, "fg": color.FgWhite,
+			"hlbg": color.BgHiGreen, "hlfg": color.FgWhite,
+			"nohlbg": color.BgWhite, "nohlfg": color.FgLightGreen,
+			"hdrbg": color.BgBlue, "hdrfg": color.FgWhite,
 		},
 	}
+
+	if len(conf.Settings.BG) > 0 {
+		colors[color.Level16]["bg"] = ColorStringToBGColor(conf.Settings.BG)
+		colors[color.Level256]["bg"] = ColorStringToBGColor(conf.Settings.BG)
+		colors[color.LevelRgb]["bg"] = ColorStringToBGColor(conf.Settings.BG)
+	}
+
+	if len(conf.Settings.FG) > 0 {
+		colors[color.Level16]["fg"] = ColorStringToColor(conf.Settings.FG)
+		colors[color.Level256]["fg"] = ColorStringToColor(conf.Settings.FG)
+		colors[color.LevelRgb]["fg"] = ColorStringToColor(conf.Settings.FG)
+	}
+
+	if len(conf.Settings.HighlightBG) > 0 {
+		colors[color.Level16]["hlbg"] = ColorStringToBGColor(conf.Settings.HighlightBG)
+		colors[color.Level256]["hlbg"] = ColorStringToBGColor(conf.Settings.HighlightBG)
+		colors[color.LevelRgb]["hlbg"] = ColorStringToBGColor(conf.Settings.HighlightBG)
+	}
+
+	if len(conf.Settings.HighlightFG) > 0 {
+		colors[color.Level16]["hlfg"] = ColorStringToColor(conf.Settings.HighlightFG)
+		colors[color.Level256]["hlfg"] = ColorStringToColor(conf.Settings.HighlightFG)
+		colors[color.LevelRgb]["hlfg"] = ColorStringToColor(conf.Settings.HighlightFG)
+	}
+
+	if len(conf.Settings.NoHighlightBG) > 0 {
+		colors[color.Level16]["nohlbg"] = ColorStringToBGColor(conf.Settings.NoHighlightBG)
+		colors[color.Level256]["nohlbg"] = ColorStringToBGColor(conf.Settings.NoHighlightBG)
+		colors[color.LevelRgb]["nohlbg"] = ColorStringToBGColor(conf.Settings.NoHighlightBG)
+	}
+
+	if len(conf.Settings.NoHighlightFG) > 0 {
+		colors[color.Level16]["nohlfg"] = ColorStringToColor(conf.Settings.NoHighlightFG)
+		colors[color.Level256]["nohlfg"] = ColorStringToColor(conf.Settings.NoHighlightFG)
+		colors[color.LevelRgb]["nohlfg"] = ColorStringToColor(conf.Settings.NoHighlightFG)
+	}
+
+	if len(conf.Settings.HighlightHdrBG) > 0 {
+		colors[color.Level16]["hdrbg"] = ColorStringToBGColor(conf.Settings.HighlightHdrBG)
+		colors[color.Level256]["hdrbg"] = ColorStringToBGColor(conf.Settings.HighlightHdrBG)
+		colors[color.LevelRgb]["hdrbg"] = ColorStringToBGColor(conf.Settings.HighlightHdrBG)
+	}
+
+	if len(conf.Settings.HighlightHdrFG) > 0 {
+		colors[color.Level16]["hdrfg"] = ColorStringToColor(conf.Settings.HighlightHdrFG)
+		colors[color.Level256]["hdrfg"] = ColorStringToColor(conf.Settings.HighlightHdrFG)
+		colors[color.LevelRgb]["hdrfg"] = ColorStringToColor(conf.Settings.HighlightHdrFG)
+	}
+
+	return colors
 }

 // find supported color mode, modifies config based on constants
-func (c *Config) DetermineColormode() {
+func (conf *Config) DetermineColormode() {
 	if !isTerminal(os.Stdout) {
 		color.Disable()
 	} else {
 		level := color.TermColorLevel()
-		colors := Colors()
-		c.ColorStyle = color.New(colors[level]["bg"], colors[level]["fg"])
+		colors := conf.Colors()
+
+		conf.ColorStyle = color.New(colors[level]["bg"], colors[level]["fg"])
+		conf.HighlightStyle = color.New(colors[level]["hlbg"], colors[level]["hlfg"])
+		conf.NoHighlightStyle = color.New(colors[level]["nohlbg"], colors[level]["nohlfg"])
+		conf.HighlightHdrStyle = color.New(colors[level]["hdrbg"], colors[level]["hdrfg"])
 	}
 }

 // Return true if current terminal is interactive
 func isTerminal(f *os.File) bool {
 	o, _ := f.Stat()
-	if (o.Mode() & os.ModeCharDevice) == os.ModeCharDevice {
-		return true
-	} else {
-		return false
-	}
+
+	return (o.Mode() & os.ModeCharDevice) == os.ModeCharDevice
 }

+// main program version
+// generated  version string, used  by -v contains  lib.Version on
+//
+//	main branch, and lib.Version-$branch-$lastcommit-$date on
+//
+// development branch
 func Getversion() string {
-	// main program version
-
-	// generated  version string, used  by -v contains  lib.Version on
-	//  main  branch,   and  lib.Version-$branch-$lastcommit-$date  on
-	// development branch
-
 	return fmt.Sprintf("This is tablizer version %s", VERSION)
 }

@@ -156,45 +295,208 @@ func (conf *Config) PrepareModeFlags(flag Modeflag) {
 		conf.OutputMode = Yaml
 	case flag.C:
 		conf.OutputMode = CSV
+	case flag.J:
+		conf.OutputMode = Json
+	case conf.Template != "":
+		conf.OutputMode = Template
 	default:
-		conf.OutputMode = Ascii
+		conf.OutputMode = ASCII
 	}
 }

-func (c *Config) CheckEnv() {
-	// check for environment vars, command line flags have precedence,
-	// NO_COLOR is being checked by the color module itself.
-	if !c.NoNumbering {
-		_, set := os.LookupEnv("T_NO_HEADER_NUMBERING")
-		if set {
-			c.NoNumbering = true
+func (conf *Config) PrepareFilters() error {
+	conf.Filters = make(map[string]Filter, len(conf.Rawfilters))
+
+	for _, rawfilter := range conf.Rawfilters {
+		filter := Filter{}
+
+		parts := strings.Split(rawfilter, "!=")
+		if len(parts) != MAXPARTS {
+			parts = strings.Split(rawfilter, "=")
+
+			if len(parts) != MAXPARTS {
+				return errors.New("filter field and value must be separated by '=' or '!='")
+			}
+		} else {
+			filter.Negate = true
 		}
-	}

-	if len(c.Columns) == 0 {
-		cols := os.Getenv("T_COLUMNS")
-		if len(cols) > 1 {
-			c.Columns = cols
+		reg, err := regexp.Compile(parts[1])
+		if err != nil {
+			return fmt.Errorf("failed to compile filter regex for field %s: %w",
+				parts[0], err)
 		}
+
+		filter.Regex = reg
+		conf.Filters[strings.ToLower(parts[0])] = filter
 	}
-}
-
-func (c *Config) ApplyDefaults() {
-	// mode specific defaults
-	if c.OutputMode == Yaml || c.OutputMode == CSV {
-		c.NoNumbering = true
-	}
-}
-
-func (c *Config) PreparePattern(pattern string) error {
-	PatternR, err := regexp.Compile(pattern)
-
-	if err != nil {
-		return errors.Unwrap(fmt.Errorf("Regexp pattern %s is invalid: %w", c.Pattern, err))
-	}
-
-	c.PatternR = PatternR
-	c.Pattern = pattern

 	return nil
 }
+
+// check if transposers match transposer columns and prepare transposer structs
+func (conf *Config) PrepareTransposers() error {
+	if len(conf.Transposers) != len(conf.UseTransposeColumns) {
+		return fmt.Errorf("the number of transposers needs to correspond to the number of transpose columns: %d != %d",
+			len(conf.Transposers), len(conf.UseTransposeColumns))
+	}
+
+	for _, transposer := range conf.Transposers {
+		parts := strings.Split(transposer, string(transposer[0]))
+		if len(parts) != 4 {
+			return fmt.Errorf("transposer function must have the format /regexp/replace-string/")
+		}
+
+		conf.UseTransposers = append(conf.UseTransposers,
+			Transposer{
+				Search:  *regexp.MustCompile(parts[1]),
+				Replace: parts[2]},
+		)
+	}
+
+	return nil
+}
+
+func (conf *Config) CheckEnv() {
+	// check for environment vars, command line flags have precedence,
+	// NO_COLOR is being checked by the color module itself.
+	if !conf.Numbering {
+		_, set := os.LookupEnv("T_HEADER_NUMBERING")
+		if set {
+			conf.Numbering = true
+		}
+	}
+
+	if len(conf.Columns) == 0 {
+		cols := os.Getenv("T_COLUMNS")
+		if len(cols) > 1 {
+			conf.Columns = cols
+		}
+	}
+}
+
+func (conf *Config) ApplyDefaults() {
+	// mode specific defaults
+	if conf.OutputMode == Yaml || conf.OutputMode == CSV {
+		conf.Numbering = false
+	}
+
+	if conf.Separator[0] == ':' && conf.Separator[len(conf.Separator)-1] == ':' {
+		separator, ok := SeparatorTemplates[conf.Separator]
+		if ok {
+			conf.Separator = separator
+		}
+	}
+}
+
+func (conf *Config) PreparePattern(patterns []*Pattern) error {
+	// regex checks if a pattern looks like /$pattern/[i!]
+	flagre := regexp.MustCompile(`^/(.*)/([i!]*)$`)
+
+	for _, pattern := range patterns {
+		matches := flagre.FindAllStringSubmatch(pattern.Pattern, -1)
+
+		// we have a regex with flags
+		for _, match := range matches {
+			pattern.Pattern = match[1] // the inner part is our actual pattern
+			flags := match[2]          // the flags
+
+			for _, flag := range flags {
+				switch flag {
+				case 'i':
+					pattern.Pattern = `(?i)` + pattern.Pattern
+				case '!':
+					pattern.Negate = true
+				}
+			}
+		}
+
+		PatternRe, err := regexp.Compile(pattern.Pattern)
+		if err != nil {
+			return fmt.Errorf("regexp pattern %s is invalid: %w", pattern.Pattern, err)
+		}
+
+		pattern.PatternRe = PatternRe
+	}
+
+	conf.Patterns = patterns
+
+	return nil
+}
+
+func (conf *Config) PrepareCustomHeaders(custom string) {
+	if len(custom) > 0 {
+		conf.CustomHeaders = strings.Split(custom, ",")
+	}
+}
+
+// Parse config file.  Ignore if the file doesn't exist  but return an
+// error if it exists but fails to read or parse
+func (conf *Config) ParseConfigfile() error {
+	path, err := os.Stat(conf.Configfile)
+
+	if err != nil {
+		if os.IsNotExist(err) {
+			// ignore non-existent files
+			return nil
+		}
+
+		return fmt.Errorf("failed to stat config file: %w", err)
+	}
+
+	if path.IsDir() {
+		// ignore non-existent or dirs
+		return nil
+	}
+
+	configstring, err := os.ReadFile(path.Name())
+	if err != nil {
+		return fmt.Errorf("failed to read config file %s: %w", path.Name(), err)
+	}
+
+	err = hclsimple.Decode(
+		path.Name(),
+		configstring,
+		nil,
+		&conf.Settings)
+	if err != nil {
+		return fmt.Errorf("failed to load configuration file %s: %w",
+			path.Name(), err)
+	}
+
+	return nil
+}
+
+// translate color string to internal color value
+func ColorStringToColor(colorname string) color.Color {
+	for name, color := range color.FgColors {
+		if name == colorname {
+			return color
+		}
+	}
+
+	for name, color := range color.ExFgColors {
+		if name == colorname {
+			return color
+		}
+	}
+
+	return color.Normal
+}
+
+// same, for background colors
+func ColorStringToBGColor(colorname string) color.Color {
+	for name, color := range color.BgColors {
+		if name == colorname {
+			return color
+		}
+	}
+
+	for name, color := range color.ExBgColors {
+		if name == colorname {
+			return color
+		}
+	}
+
+	return color.Normal
+}
--- a/cfg/config_test.go
+++ b/cfg/config_test.go
@@ -21,6 +21,8 @@ import (
 	"fmt"
 	//	"reflect"
 	"testing"
+
+	"github.com/stretchr/testify/assert"
 )

 func TestPrepareModeFlags(t *testing.T) {
@@ -34,19 +36,18 @@ func TestPrepareModeFlags(t *testing.T) {
 		{Modeflag{O: true}, Orgtbl},
 		{Modeflag{Y: true}, Yaml},
 		{Modeflag{M: true}, Markdown},
-		{Modeflag{}, Ascii},
+		{Modeflag{}, ASCII},
 	}

 	// FIXME: use a map for easier printing
-	for _, tt := range tests {
-		testname := fmt.Sprintf("PrepareModeFlags-expect-%d", tt.expect)
+	for _, testdata := range tests {
+		testname := fmt.Sprintf("PrepareModeFlags-expect-%d", testdata.expect)
 		t.Run(testname, func(t *testing.T) {
-			c := Config{}
+			conf := Config{}

-			c.PrepareModeFlags(tt.flag)
-			if c.OutputMode != tt.expect {
-				t.Errorf("got: %d, expect: %d", c.OutputMode, tt.expect)
-			}
+			conf.PrepareModeFlags(testdata.flag)
+
+			assert.EqualValues(t, testdata.expect, conf.OutputMode)
 		})
 	}
 }
@@ -63,40 +64,74 @@ func TestPrepareSortFlags(t *testing.T) {
 		{Sortmode{}, "string"},
 	}

-	for _, tt := range tests {
-		testname := fmt.Sprintf("PrepareSortFlags-expect-%s", tt.expect)
+	for _, testdata := range tests {
+		testname := fmt.Sprintf("PrepareSortFlags-expect-%s", testdata.expect)
 		t.Run(testname, func(t *testing.T) {
-			c := Config{}
+			conf := Config{}

-			c.PrepareSortFlags(tt.flag)
+			conf.PrepareSortFlags(testdata.flag)

-			if c.SortMode != tt.expect {
-				t.Errorf("got: %s, expect: %s", c.SortMode, tt.expect)
-			}
+			assert.EqualValues(t, testdata.expect, conf.SortMode)
 		})
 	}
 }

 func TestPreparePattern(t *testing.T) {
 	var tests = []struct {
-		pattern string
-		wanterr bool
+		patterns  []*Pattern
+		name      string
+		wanterror bool
+		wanticase bool
+		wantneg   bool
 	}{
-		{"[A-Z]+", false},
-		{"[a-z", true},
+		{
+			[]*Pattern{{Pattern: "[A-Z]+"}},
+			"simple",
+			false,
+			false,
+			false,
+		},
+		{
+			[]*Pattern{{Pattern: "[a-z"}},
+			"regfail",
+			true,
+			false,
+			false,
+		},
+		{
+			[]*Pattern{{Pattern: "/[A-Z]+/i"}},
+			"icase",
+			false,
+			true,
+			false,
+		},
+		{
+			[]*Pattern{{Pattern: "/[A-Z]+/!"}},
+			"negate",
+			false,
+			false,
+			true,
+		},
+		{
+			[]*Pattern{{Pattern: "/[A-Z]+/!i"}},
+			"negicase",
+			false,
+			true,
+			true,
+		},
 	}

-	for _, tt := range tests {
-		testname := fmt.Sprintf("PreparePattern-pattern-%s-wanterr-%t", tt.pattern, tt.wanterr)
+	for _, testdata := range tests {
+		testname := fmt.Sprintf("PreparePattern-pattern-%s-wanterr-%t", testdata.name, testdata.wanterror)
 		t.Run(testname, func(t *testing.T) {
-			c := Config{}
+			conf := Config{}

-			err := c.PreparePattern(tt.pattern)
+			err := conf.PreparePattern(testdata.patterns)

-			if err != nil {
-				if !tt.wanterr {
-					t.Errorf("PreparePattern returned error: %s", err)
-				}
+			if testdata.wanterror {
+				assert.Error(t, err)
+			} else {
+				assert.NoError(t, err)
 			}
 		})
 	}
--- a/cmd/root.go
+++ b/cmd/root.go
@@ -1,5 +1,5 @@
 /*
-Copyright © 2022 Thomas von Dein
+Copyright © 2022-2025 Thomas von Dein

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -17,35 +17,17 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
 package cmd

 import (
-	"bytes"
 	"errors"
 	"fmt"
-	"github.com/spf13/cobra"
-	"github.com/tlinden/tablizer/cfg"
-	"github.com/tlinden/tablizer/lib"
-	"log"
 	"os"
-	"os/exec"
+	"slices"
 	"strings"
+
+	"codeberg.org/scip/tablizer/cfg"
+	"codeberg.org/scip/tablizer/lib"
+	"github.com/spf13/cobra"
 )

-func man() {
-	man := exec.Command("less", "-")
-
-	var b bytes.Buffer
-	b.Write([]byte(manpage))
-
-	man.Stdout = os.Stdout
-	man.Stdin = &b
-	man.Stderr = os.Stderr
-
-	err := man.Run()
-
-	if err != nil {
-		log.Fatal(err)
-	}
-}
-
 func completion(cmd *cobra.Command, mode string) error {
 	switch mode {
 	case "bash":
@@ -57,7 +39,15 @@ func completion(cmd *cobra.Command, mode string) error {
 	case "powershell":
 		return cmd.Root().GenPowerShellCompletionWithDesc(os.Stdout)
 	default:
-		return errors.New("Invalid shell parameter! Valid ones: bash|zsh|fish|powershell")
+		return errors.New("invalid shell parameter! Valid ones: bash|zsh|fish|powershell")
+	}
+}
+
+// we die with exit 1 if there's an error
+func wrapE(err error) {
+	if err != nil {
+		fmt.Println(err.Error())
+		os.Exit(1)
 	}
 }

@@ -69,72 +59,150 @@ func Execute() {
 		ShowCompletion string
 		modeflag       cfg.Modeflag
 		sortmode       cfg.Sortmode
+		headers        string
 	)

 	var rootCmd = &cobra.Command{
 		Use:   "tablizer [regex] [file, ...]",
 		Short: "[Re-]tabularize tabular data",
 		Long:  `Manipulate tabular output of other programs`,
-		RunE: func(cmd *cobra.Command, args []string) error {
+
+		Run: func(cmd *cobra.Command, args []string) {
 			if ShowVersion {
 				fmt.Println(cfg.Getversion())
-				return nil
+
+				return
 			}

 			if ShowManual {
-				man()
-				return nil
+				lib.Pager("tablizer manual page", manpage)
+
+				return
 			}

 			if len(ShowCompletion) > 0 {
-				return completion(cmd, ShowCompletion)
+				wrapE(completion(cmd, ShowCompletion))
+
+				return
 			}

 			// Setup
+			wrapE(conf.ParseConfigfile())
+
 			conf.CheckEnv()
 			conf.PrepareModeFlags(modeflag)
 			conf.PrepareSortFlags(sortmode)
+			conf.PrepareCustomHeaders(headers)
+
+			wrapE(conf.PrepareFilters())
+
 			conf.DetermineColormode()
 			conf.ApplyDefaults()

 			// actual execution starts here
-			return lib.ProcessFiles(&conf, args)
+			wrapE(lib.ProcessFiles(&conf, args))
 		},
 	}

 	// options
-	rootCmd.PersistentFlags().BoolVarP(&conf.Debug, "debug", "d", false, "Enable debugging")
-	rootCmd.PersistentFlags().BoolVarP(&conf.NoNumbering, "no-numbering", "n", false, "Disable header numbering")
-	rootCmd.PersistentFlags().BoolVarP(&conf.NoColor, "no-color", "N", false, "Disable pattern highlighting")
-	rootCmd.PersistentFlags().BoolVarP(&ShowVersion, "version", "V", false, "Print program version")
-	rootCmd.PersistentFlags().BoolVarP(&conf.InvertMatch, "invert-match", "v", false, "select non-matching rows")
-	rootCmd.PersistentFlags().BoolVarP(&ShowManual, "man", "m", false, "Display manual page")
-	rootCmd.PersistentFlags().StringVarP(&ShowCompletion, "completion", "", "", "Display completion code")
-	rootCmd.PersistentFlags().StringVarP(&conf.Separator, "separator", "s", cfg.DefaultSeparator, "Custom field separator")
-	rootCmd.PersistentFlags().StringVarP(&conf.Columns, "columns", "c", "", "Only show the speficied columns (separated by ,)")
+	rootCmd.PersistentFlags().BoolVarP(&conf.Debug, "debug", "d", false,
+		"Enable debugging")
+	rootCmd.PersistentFlags().BoolVarP(&conf.Numbering, "numbering", "n", false,
+		"Disable header numbering")
+	rootCmd.PersistentFlags().BoolVarP(&conf.NoHeaders, "no-headers", "H", false,
+		"Disable header display")
+	rootCmd.PersistentFlags().BoolVarP(&conf.NoColor, "no-color", "N", false,
+		"Disable pattern highlighting")
+	rootCmd.PersistentFlags().BoolVarP(&ShowVersion, "version", "V", false,
+		"Print program version")
+	rootCmd.PersistentFlags().BoolVarP(&conf.InvertMatch, "invert-match", "v", false,
+		"select non-matching rows")
+	rootCmd.PersistentFlags().BoolVarP(&ShowManual, "man", "m", false,
+		"Display manual page")
+	rootCmd.PersistentFlags().BoolVarP(&conf.UseFuzzySearch, "fuzzy", "z", false,
+		"Use fuzzy searching")
+	rootCmd.PersistentFlags().BoolVarP(&conf.UseHighlight, "highlight-lines", "L", false,
+		"Use alternating background colors")
+	rootCmd.PersistentFlags().StringVarP(&ShowCompletion, "completion", "", "",
+		"Display completion code")
+	rootCmd.PersistentFlags().StringVarP(&conf.Separator, "separator", "s", cfg.SeparatorTemplates[":default:"],
+		"Custom field separator")
+	rootCmd.PersistentFlags().StringVarP(&conf.Columns, "columns", "c", "",
+		"Only show the speficied columns (separated by ,)")
+	rootCmd.PersistentFlags().StringVarP(&conf.YankColumns, "yank-columns", "y", "",
+		"Yank the speficied columns (separated by ,) to the clipboard")
+	rootCmd.PersistentFlags().StringVarP(&conf.TransposeColumns, "transpose-columns", "T", "",
+		"Transpose the speficied columns (separated by ,)")
+	rootCmd.PersistentFlags().BoolVarP(&conf.Interactive, "interactive", "I", false,
+		"interactive mode")
+	rootCmd.PersistentFlags().StringVarP(&conf.OFS, "ofs", "o", "",
+		"Output field separator (' ' for ascii table, ',' for CSV)")
+	rootCmd.PersistentFlags().BoolVarP(&conf.InputJSON, "json", "j", false,
+		"JSON input mode")
+	rootCmd.PersistentFlags().BoolVarP(&conf.AutoHeaders, "auto-headers", "g", false,
+		"Generate headers automatically")
+	rootCmd.PersistentFlags().StringVarP(&headers, "custom-headers", "x", "",
+		"Custom headers")

 	// sort options
-	rootCmd.PersistentFlags().IntVarP(&conf.SortByColumn, "sort-by", "k", 0, "Sort by column (default: 1)")
+	rootCmd.PersistentFlags().StringVarP(&conf.SortByColumn, "sort-by", "k", "",
+		"Sort by column (default: 1)")

 	// sort mode, only 1 allowed
-	rootCmd.PersistentFlags().BoolVarP(&conf.SortDescending, "sort-desc", "D", false, "Sort in descending order (default: ascending)")
-	rootCmd.PersistentFlags().BoolVarP(&sortmode.Numeric, "sort-numeric", "i", false, "sort according to string numerical value")
-	rootCmd.PersistentFlags().BoolVarP(&sortmode.Time, "sort-time", "t", false, "sort according to time string")
-	rootCmd.PersistentFlags().BoolVarP(&sortmode.Age, "sort-age", "a", false, "sort according to age (duration) string")
-	rootCmd.MarkFlagsMutuallyExclusive("sort-numeric", "sort-time", "sort-age")
+	rootCmd.PersistentFlags().BoolVarP(&conf.SortDescending, "sort-desc", "D", false,
+		"Sort in descending order (default: ascending)")
+	rootCmd.PersistentFlags().BoolVarP(&sortmode.Numeric, "sort-numeric", "i", false,
+		"sort according to string numerical value")
+	rootCmd.PersistentFlags().BoolVarP(&sortmode.Time, "sort-time", "t", false,
+		"sort according to time string")
+	rootCmd.PersistentFlags().BoolVarP(&sortmode.Age, "sort-age", "a", false,
+		"sort according to age (duration) string")
+	rootCmd.MarkFlagsMutuallyExclusive("sort-numeric", "sort-time",
+		"sort-age")

 	// output flags, only 1 allowed
-	rootCmd.PersistentFlags().BoolVarP(&modeflag.X, "extended", "X", false, "Enable extended output")
-	rootCmd.PersistentFlags().BoolVarP(&modeflag.M, "markdown", "M", false, "Enable markdown table output")
-	rootCmd.PersistentFlags().BoolVarP(&modeflag.O, "orgtbl", "O", false, "Enable org-mode table output")
-	rootCmd.PersistentFlags().BoolVarP(&modeflag.S, "shell", "S", false, "Enable shell mode output")
-	rootCmd.PersistentFlags().BoolVarP(&modeflag.Y, "yaml", "Y", false, "Enable yaml output")
-	rootCmd.PersistentFlags().BoolVarP(&modeflag.C, "csv", "C", false, "Enable CSV output")
-	rootCmd.PersistentFlags().BoolVarP(&modeflag.A, "ascii", "A", false, "Enable ASCII output (default)")
-	rootCmd.MarkFlagsMutuallyExclusive("extended", "markdown", "orgtbl", "shell", "yaml", "csv")
+	rootCmd.PersistentFlags().BoolVarP(&modeflag.X, "extended", "X", false,
+		"Enable extended output")
+	rootCmd.PersistentFlags().BoolVarP(&modeflag.M, "markdown", "M", false,
+		"Enable markdown table output")
+	rootCmd.PersistentFlags().BoolVarP(&modeflag.O, "orgtbl", "O", false,
+		"Enable org-mode table output")
+	rootCmd.PersistentFlags().BoolVarP(&modeflag.S, "shell", "S", false,
+		"Enable shell mode output")
+	rootCmd.PersistentFlags().BoolVarP(&modeflag.Y, "yaml", "Y", false,
+		"Enable yaml output")
+	rootCmd.PersistentFlags().BoolVarP(&modeflag.J, "jsonout", "J", false,
+		"Enable json output")
+	rootCmd.PersistentFlags().BoolVarP(&modeflag.C, "csv", "C", false,
+		"Enable CSV output")
+	rootCmd.PersistentFlags().BoolVarP(&modeflag.A, "ascii", "A", false,
+		"Enable ASCII output (default)")
+	rootCmd.MarkFlagsMutuallyExclusive("extended", "markdown", "orgtbl",
+		"shell", "yaml", "csv")
+	rootCmd.PersistentFlags().StringVarP(&conf.Template, "template", "P", "",
+		"template for template output mode")
+
+	// config file
+	rootCmd.PersistentFlags().StringVarP(&conf.Configfile, "config", "f", cfg.DefaultConfigfile,
+		"config file (default: ~/.config/tablizer/config)")
+
+	// filters
+	rootCmd.PersistentFlags().StringArrayVarP(&conf.Rawfilters,
+		"filter", "F", nil, "Filter by field (field=regexp || field!=regexp)")
+	rootCmd.PersistentFlags().StringArrayVarP(&conf.Transposers,
+		"regex-transposer", "R", nil, "apply /search/replace/ regexp to fields given in -T")
+
+	// input
+	rootCmd.PersistentFlags().StringVarP(&conf.InputFile, "read-file", "r", "",
+		"Read input data from file")

 	rootCmd.SetUsageTemplate(strings.TrimSpace(usage) + "\n")

+	if slices.Contains(os.Args, "-h") {
+		fmt.Println(shortusage)
+		os.Exit(0)
+	}
+
 	err := rootCmd.Execute()
 	if err != nil {
 		os.Exit(1)
--- a/cmd/shortusage.go
+++ b/cmd/shortusage.go
@@ -0,0 +1,18 @@
+package cmd
+
+const shortusage = `tablizer [regex,...] [-r file] [flags]
+-c col,...   show specified columns                  -L  highlight matching lines
+-k col,...   sort by specified columns               -j  read JSON input
+-F col=reg   filter field with regexp                -v  invert match
+-T col,...   transpose specified columns             -n  numberize columns
+-R /from/to/ apply replacement to columns in -T      -N  do not use colors
+-y col,...   yank columns to clipboard               -H  do not show headers
+--ofs char   output field separator                  -s  specify field separator
+-r file      read input from file                    -z  use fuzzy search
+-f file      read config from file                   -I  interactive filter mode
+-x col,...   use custom headers                      -d  debug
+-o char      use char as output separator            -g  auto generate headers
+
+-O org  -C CSV  -M md  -X ext  -S shell  -Y yaml  -J json  -P template
+-a sort by age   -i sort numerically   -t sort by time   -D sort descending order
+-m show manual   -v  show version      --help  show detailed help`
--- a/cmd/tablizer.go
+++ b/cmd/tablizer.go
@@ -6,37 +6,54 @@ NAME

 SYNOPSIS
        Usage:
-          tablizer [regex] [file, ...] [flags]
+          tablizer [regex,...] [-r file] [flags]
    
        Operational Flags:
-          -c, --columns string     Only show the speficied columns (separated by ,)
-          -v, --invert-match       select non-matching rows
-          -n, --no-numbering       Disable header numbering
-          -N, --no-color           Disable pattern highlighting
-          -s, --separator string   Custom field separator
-          -k, --sort-by int        Sort by column (default: 1)
+          -c, --columns string               Only show the speficied columns (separated by ,)
+          -v, --invert-match                 select non-matching rows
+          -n, --numbering                    Enable header numbering
+          -N, --no-color                     Disable pattern highlighting
+          -H, --no-headers                   Disable headers display
+          -s, --separator <string>           Custom field separator (maybe char, string or :class:)
+          -k, --sort-by <int|name>           Sort by column (default: 1)
+          -z, --fuzzy                        Use fuzzy search [experimental]
+          -F, --filter <field[!]=reg>        Filter given field with regex, can be used multiple times
+          -T, --transpose-columns string     Transpose the speficied columns (separated by ,)
+          -R, --regex-transposer </from/to/> Apply /search/replace/ regexp to fields given in -T
+          -j, --json                         Read JSON input (must be array of hashes)
+          -I, --interactive                  Interactively filter and select rows
+          -g, --auto-headers                 Generate headers if there are none present in input
+          -x, --custom-headers a,b,...       Use custom headers, separated by comma

        Output Flags (mutually exclusive):
-          -X, --extended           Enable extended output
-          -M, --markdown           Enable markdown table output
-          -O, --orgtbl             Enable org-mode table output
-          -S, --shell              Enable shell evaluable ouput
-          -Y, --yaml               Enable yaml output
-          -C, --csv                Enable CSV output
-          -A, --ascii              Default output mode, ascii tabular
+          -X, --extended                     Enable extended output
+          -M, --markdown                     Enable markdown table output
+          -O, --orgtbl                       Enable org-mode table output
+          -S, --shell                        Enable shell evaluable output
+          -Y, --yaml                         Enable yaml output
+          -J, --jsonout                      Enable JSON output
+          -C, --csv                          Enable CSV output
+          -A, --ascii                        Default output mode, ascii tabular
+          -P, --template <tpl>               Enable template mode with template <tpl>
+          -L, --hightlight-lines             Use alternating background colors for tables
+          -o, --ofs <char>                   Output field separator, used by -A and -C. 
+          -y, --yank-columns                 Yank specified columns (separated by ,) to clipboard,
+                                             space separated

        Sort Mode Flags (mutually exclusive):
-          -a, --sort-age           sort according to age (duration) string
-          -D, --sort-desc          Sort in descending order (default: ascending)
-          -i, --sort-numeric       sort according to string numerical value
-          -t, --sort-time          sort according to time string
+          -a, --sort-age                     sort according to age (duration) string
+          -D, --sort-desc                    Sort in descending order (default: ascending)
+          -i, --sort-numeric                 sort according to string numerical value
+          -t, --sort-time                    sort according to time string

        Other Flags:
-              --completion <shell> Generate the autocompletion script for <shell>
-          -d, --debug              Enable debugging
-          -h, --help               help for tablizer
-          -m, --man                Display manual page
-          -v, --version            Print program version
+          -r  --read-file <file>             Use <file> as input instead of STDIN
+              --completion <shell>           Generate the autocompletion script for <shell>
+          -f, --config <file>                Configuration file (default: ~/.config/tablizer/config)
+          -d, --debug                        Enable debugging
+          -h, --help                         help for tablizer
+          -m, --man                          Display manual page
+          -V, --version                      Print program version

 DESCRIPTION
    Many programs generate tabular output. But sometimes you need to
@@ -61,40 +78,60 @@ DESCRIPTION
    use the -v option to exclude all rows which match the pattern. Hence:

       # read from STDIN
-       kubectl get pods | tablizer
+       > kubectl get pods | tablizer

       # read a file
-       tablizer filename
+       > tablizer -r filename

       # search for pattern in a file (works like grep)
-       tablizer regex filename
+       > tablizer regex -r filename

       # search for pattern in STDIN
-       kubectl get pods | tablizer regex
+       > kubectl get pods | tablizer regex

-    The output looks like the original one but every header field will have
-    a numer associated with it, e.g.:
+    The output looks like the original one. You can add the option -n, then
+    every header field will have a numer associated with it, e.g.:

       NAME(1) READY(2) STATUS(3) RESTARTS(4) AGE(5)

    These numbers denote the column and you can use them to specify which
    columns you want to have in your output (see COLUMNS:

-       kubectl get pods | tablizer -c1,3
+       > kubectl get pods | tablizer -c1,3

    You can specify the numbers in any order but output will always follow
    the original order.

-    The numbering can be suppressed by using the -n option.
+    However, you may also just use the header names instead of numbers, eg:
+
+       > kubectl get pods | tablizer -cname,status
+
+    You can also use regular expressions with -c, eg:
+
+       > kubectl get pods | tablizer -c '[ae]'
+
+    By default tablizer shows a header containing the names of each column.
+    This can be disabled using the -H option. Be aware that this only
+    affects tabular output modes. Shell, Extended, Yaml and CSV output modes
+    always use the column names.

    By default, if a pattern has been speficied, matches will be
    highlighted. You can disable this behavior with the -N option.

    Use the -k option to specify by which column to sort the tabular data
-    (as in GNU sort(1)). The default sort column is the first one. To
-    disable sorting at all, supply 0 (Zero) to -k. The default sort order is
-    ascending. You can change this to descending order using the option -D.
-    The default sort order is by string, but there are other sort modes:
+    (as in GNU sort(1)). The default sort column is the first one. You can
+    specify column numbers or names. Column numbers start with 1, names are
+    case insensitive. You can specify multiple columns separated by comma to
+    sort, but the type must be the same. For example if you want to sort
+    numerically, all columns must be numbers. If you use column numbers,
+    then be aware, that these are the numbers before column extraction. For
+    example if you have a table with 4 columns and specify "-c4", then only
+    1 column (the fourth) will be printed, however if you want to sort by
+    this column, you'll have to specify "-k4".
+
+    The default sort order is ascending. You can change this to descending
+    order using the option -D. The default sort order is by alphanumeric
+    string, but there are other sort modes:

    -a --sort-age
        Sorts duration strings like "1d4h32m51s".
@@ -108,29 +145,128 @@ DESCRIPTION
    Finally the -d option enables debugging output which is mostly useful
    for the developer.

-  PATTERNS
-    You can reduce the rows being displayed by using a regular expression
-    pattern. The regexp is PCRE compatible, refer to the syntax cheat sheet
-    here: <https://github.com/google/re2/wiki/Syntax>. If you want to read a
-    more comprehensive documentation about the topic and have perl installed
-    you can read it with:
+  SEPARATOR
+    The option -s can be a single character, in which case the CSV parser
+    will be invoked. You can also specify a string as separator. The string
+    will be interpreted as literal string unless it is a valid go regular
+    expression. For example:
+
+        -s '\t{2,}\'
+
+    is being used as a regexp and will match two or more consecutive tabs.
+
+        -s 'foo'
+
+    on the other hand is no regular expression and will be used literally.
+
+    To make live easier, there are a couple of predefined regular
+    expressions, which you can specify as classes:
+
+        * :tab:
+
+        Matches a tab and eats spaces around it.
+
+        * :spaces:
+
+        Matches 2 or more spaces.
+
+        * :pipe:
+
+        Matches a pipe character and eats spaces around it.
+
+        * :default:
+
+        Matches 2 or more spaces or tab. This is the default separator if
+        none is specified.
+
+        * :nonword:
+
+        Matches a non-word character.
+
+        * :nondigit:
+
+        Matches a non-digit character.
+
+        * :special:
+
+        Matches one or more special chars like brackets, dollar sign,
+        slashes etc.
+
+        * :nonprint:
+
+        Matches one or more non-printable characters.
+
+  PATTERNS AND FILTERING
+    You can reduce the rows being displayed by using one or more regular
+    expression patterns. The regexp language being used is the one of
+    GOLANG, refer to the syntax cheat sheet here:
+    <https://pkg.go.dev/regexp/syntax>.
+
+    If you want to read a more comprehensive documentation about the topic
+    and have perl installed you can read it with:

        perldoc perlre

-    Or read it online: <https://perldoc.perl.org/perlre>.
+    Or read it online: <https://perldoc.perl.org/perlre>. But please note
+    that the GO regexp engine does NOT support all perl regex terms,
+    especially look-ahead and look-behind.

-    A note on modifiers: the regexp engine used in tablizer uses another
-    modifier syntax:
+    If you want to supply flags to a regex, then surround it with slashes
+    and append the flag. The following flags are supported:

-        (?MODIFIER)
-
-    The most important modifiers are:
-
-    "i" ignore case "m" multiline mode "s" single line mode
+        i => case insensitive
+        ! => negative match

    Example for a case insensitive search:

-        kubectl get pods -A | tablizer "(?i)account"
+        > kubectl get pods -A | tablizer "/account/i"
+
+    If you use the "!" flag, then the regex match will be negated, that is,
+    if a line in the input matches the given regex, but "!" is supplied,
+    tablizer will NOT include it in the output.
+
+    For example, here we want to get all lines matching "foo" but not "bar":
+
+        cat table | tablizer foo '/bar/!'
+
+    This would match a line "foo zorro" but not "foo bar".
+
+    The flags can also be combined.
+
+    You can also use the experimental fuzzy search feature by providing the
+    option -z, in which case the pattern is regarded as a fuzzy search term,
+    not a regexp.
+
+    Sometimes you want to filter by one or more columns. You can do that
+    using the -F option. The option can be specified multiple times and has
+    the following format:
+
+        fieldname=regexp
+
+    Fieldnames (== columns headers) are case insensitive.
+
+    If you specify more than one filter, both filters have to match (AND
+    operation).
+
+    These field filters can also be negated:
+
+        fieldname!=regexp
+
+    If the option -v is specified, the filtering is inverted.
+
+  INTERACTIVE FILTERING
+    You can also use the interactive mode, enabled with "-I" to filter and
+    select rows. This mode is complementary, that is, other filter options
+    are still being respected.
+
+    To enter e filter, hit "/", enter a filter string and finish with
+    "ENTER". Use "SPACE" to select/deselect rows, use "a" to select all
+    (visible) rows.
+
+    Commit your selection with "q". The selected rows are being fed to the
+    requested output mode as usual. Abort with "CTRL-c", in which case the
+    results of the interactive mode are being ignored and all rows are being
+    fed to output.

  COLUMNS
    The parameter -c can be used to specify, which columns to display. By
@@ -149,7 +285,7 @@ DESCRIPTION

    We want to see only the CMD column and use a regex for this:

-        ps | tablizer -s '\s+' -c C
+        > ps | tablizer -s '\s+' -c C
        CMD(4)
        bash
        ps
@@ -158,6 +294,44 @@ DESCRIPTION

    where "C" is our regexp which matches CMD.

+    If a column specifier doesn't look like a regular expression, matching
+    against header fields will be case insensitive. So, if you have a field
+    with the name "ID" then these will all match: "-c id", "-c Id". The same
+    rule applies to the options "-T" and "-F".
+
+  TRANSPOSE FIELDS USING REGEXPS
+    You can manipulate field contents using regular expressions. You have to
+    tell tablizer which field[s] to operate on using the option "-T" and the
+    search/replace pattern using "-R". The number of columns and patterns
+    must match.
+
+    A search/replace pattern consists of the following elements:
+
+        /search-regexp/replace-string/
+
+    The separator can be any valid character. Especially if you want to use
+    a regexp containing the "/" character, eg:
+
+        |search-regexp|replace-string|
+
+    Example:
+
+        > cat t/testtable2
+        NAME  DURATION
+        x     10
+        a     100
+        z     0
+        u     4
+        k     6
+    
+        > cat t/testtable2 | tablizer -T2 -R '/^\d/4/' -n
+        NAME    DURATION 
+        x       40      
+        a       400     
+        z       4       
+        u       4       
+        k       4
+
  OUTPUT MODES
    There might be cases when the tabular output of a program is way too
    large for your current terminal but you still need to see every column.
@@ -166,7 +340,7 @@ DESCRIPTION
    header left, value right, aligned by the field widths. Here's an
    example:

-        kubectl get pods | ./tablizer -o extended
+        > kubectl get pods | ./tablizer -o extended
            NAME: repldepl-7bcd8d5b64-7zq4l  
           READY: 1/1    
          STATUS: Running  
@@ -179,7 +353,7 @@ DESCRIPTION
    The option -o shell can be used if the output has to be processed by the
    shell, it prints variable assignments for each cell, one line per row:

-        kubectl get pods | ./tablizer -o extended ./tablizer -o shell
+        > kubectl get pods | ./tablizer -o extended ./tablizer -o shell
        NAME="repldepl-7bcd8d5b64-7zq4l" READY="1/1" STATUS="Running" RESTARTS="9 (47m ago)" AGE="4d23h" 
        NAME="repldepl-7bcd8d5b64-m48n8" READY="1/1" STATUS="Running" RESTARTS="9 (47m ago)" AGE="4d23h" 
        NAME="repldepl-7bcd8d5b64-q2bf4" READY="1/1" STATUS="Running" RESTARTS="9 (47m ago)" AGE="4d23h"
@@ -191,12 +365,36 @@ DESCRIPTION
    markdown which prints a Markdown table, yaml, which prints yaml encoding
    and CSV mode, which prints a comma separated value file.

+    A special output mode ist the Template mode, activated with the option
+    "--template". Template language is the Golang template language:
+    <https://pkg.go.dev/text/template>. You can also use lot's of additional
+    functions from: <https://masterminds.github.io/sprig/>. Here's an
+    example:
+
+        > kubectl get pods | tablizer --template "{{.name}} is {{.status}}"
+        alertmanager-kube-prometheus-alertmanager-0 is Running
+        grafana-fcc54cbc9-bk7s8 is Running
+
+    You can use header names as variables.
+
+  PUT FIELDS TO CLIPBOARD
+    You can let tablizer put fields to the clipboard using the option "-y".
+    This best fits the use-case when the result of your filtering yields
+    just one row. For example:
+
+        cloudctl cluster ls | tablizer -yid matchbox
+
+    If "matchbox" matches one cluster, you can immediately use the id of
+    that cluster somewhere else and paste it. Of course, if there are
+    multiple matches, then all id's will be put into the clipboard separated
+    by one space.
+
  ENVIRONMENT VARIABLES
    tablizer supports certain environment variables which use can use to
    influence program behavior. Commandline flags have always precedence
    over environment variables.

-    <T_NO_HEADER_NUMBERING> - disable numbering of header fields, like -n.
+    <T_HEADER_NUMBERING> - enable numbering of header fields, like -n.
    <T_COLUMNS> - comma separated list of columns to output, like -c
    <NO_COLORS> - disable colorization of matches, like -N

@@ -246,16 +444,46 @@ DESCRIPTION

        and source this file from your PowerShell profile.

+CONFIGURATION AND COLORS
+    YOu can put certain configuration values into a configuration file in
+    HCL format. By default tablizer looks for
+    "$HOME/.config/tablizer/config", but you can provide one using the
+    parameter "-f".
+
+    In the configuration the following variables can be defined:
+
+        BG             = "lightGreen"
+        FG             = "white"
+        HighlightBG    = "lightGreen"
+        HighlightFG    = "white"
+        NoHighlightBG  = "white"
+        NoHighlightFG  = "lightGreen"
+        HighlightHdrBG = "red"
+        HighlightHdrFG = "white"
+
+    The following color definitions are available:
+
+    black, blue, cyan, darkGray, default, green, lightBlue, lightCyan,
+    lightGreen, lightMagenta, lightRed, lightWhite, lightYellow, magenta,
+    red, white, yellow
+
+    The Variables FG and BG are being used to highlight matches. The other
+    *FG and *BG variables are for colored table output (enabled with the
+    "-L" parameter).
+
+    Colorization can be turned off completely either by setting the
+    parameter "-N" or the environment variable NO_COLOR to a true value.
+
 BUGS
    In order to report a bug, unexpected behavior, feature requests or to
    submit a patch, please open an issue on github:
-    <https://github.com/TLINDEN/tablizer/issues>.
+    <https://codeberg.org/scip/tablizer/issues>.

 LICENSE
    This software is licensed under the GNU GENERAL PUBLIC LICENSE version
    3.

-    Copyright (c) 2023 by Thomas von Dein
+    Copyright (c) 2022-2024 by Thomas von Dein

    This software uses the following GO modules:

@@ -279,6 +507,9 @@ LICENSE
        Released under the MIT License, Copyright (c) 2006-2011 Kirill
        Simonov

+    bubble-table (https://github.com/Evertras/bubble-table)
+        Released under the MIT License, Copyright (c) 2022 Brandon Fulljames
+
 AUTHORS
    Thomas von Dein tom AT vondein DOT org

@@ -286,37 +517,54 @@ AUTHORS
 var usage = `

 Usage:
-  tablizer [regex] [file, ...] [flags]
+  tablizer [regex,...] [-r file] [flags]

 Operational Flags:
-  -c, --columns string     Only show the speficied columns (separated by ,)
-  -v, --invert-match       select non-matching rows
-  -n, --no-numbering       Disable header numbering
-  -N, --no-color           Disable pattern highlighting
-  -s, --separator string   Custom field separator
-  -k, --sort-by int        Sort by column (default: 1)
+  -c, --columns string               Only show the speficied columns (separated by ,)
+  -v, --invert-match                 select non-matching rows
+  -n, --numbering                    Enable header numbering
+  -N, --no-color                     Disable pattern highlighting
+  -H, --no-headers                   Disable headers display
+  -s, --separator <string>           Custom field separator (maybe char, string or :class:)
+  -k, --sort-by <int|name>           Sort by column (default: 1)
+  -z, --fuzzy                        Use fuzzy search [experimental]
+  -F, --filter <field[!]=reg>        Filter given field with regex, can be used multiple times
+  -T, --transpose-columns string     Transpose the speficied columns (separated by ,)
+  -R, --regex-transposer </from/to/> Apply /search/replace/ regexp to fields given in -T
+  -j, --json                         Read JSON input (must be array of hashes)
+  -I, --interactive                  Interactively filter and select rows
+  -g, --auto-headers                 Generate headers if there are none present in input
+  -x, --custom-headers a,b,...       Use custom headers, separated by comma

 Output Flags (mutually exclusive):
-  -X, --extended           Enable extended output
-  -M, --markdown           Enable markdown table output
-  -O, --orgtbl             Enable org-mode table output
-  -S, --shell              Enable shell evaluable ouput
-  -Y, --yaml               Enable yaml output
-  -C, --csv                Enable CSV output
-  -A, --ascii              Default output mode, ascii tabular
+  -X, --extended                     Enable extended output
+  -M, --markdown                     Enable markdown table output
+  -O, --orgtbl                       Enable org-mode table output
+  -S, --shell                        Enable shell evaluable output
+  -Y, --yaml                         Enable yaml output
+  -J, --jsonout                      Enable JSON output
+  -C, --csv                          Enable CSV output
+  -A, --ascii                        Default output mode, ascii tabular
+  -P, --template <tpl>               Enable template mode with template <tpl>
+  -L, --hightlight-lines             Use alternating background colors for tables
+  -o, --ofs <char>                   Output field separator, used by -A and -C. 
+  -y, --yank-columns                 Yank specified columns (separated by ,) to clipboard,
+                                     space separated

 Sort Mode Flags (mutually exclusive):
-  -a, --sort-age           sort according to age (duration) string
-  -D, --sort-desc          Sort in descending order (default: ascending)
-  -i, --sort-numeric       sort according to string numerical value
-  -t, --sort-time          sort according to time string
+  -a, --sort-age                     sort according to age (duration) string
+  -D, --sort-desc                    Sort in descending order (default: ascending)
+  -i, --sort-numeric                 sort according to string numerical value
+  -t, --sort-time                    sort according to time string

 Other Flags:
-      --completion <shell> Generate the autocompletion script for <shell>
-  -d, --debug              Enable debugging
-  -h, --help               help for tablizer
-  -m, --man                Display manual page
-  -v, --version            Print program version
+  -r  --read-file <file>             Use <file> as input instead of STDIN
+      --completion <shell>           Generate the autocompletion script for <shell>
+  -f, --config <file>                Configuration file (default: ~/.config/tablizer/config)
+  -d, --debug                        Enable debugging
+  -h, --help                         help for tablizer
+  -m, --man                          Display manual page
+  -V, --version                      Print program version


 `
--- a/config.hcl
+++ b/config.hcl
@@ -0,0 +1,12 @@
+# supported  colors:
+# black, blue,  cyan, darkGray, default, green,  lightBlue, lightCyan,
+# lightGreen,   lightMagenta,   lightRed,   lightWhite,   lightYellow,
+# magenta, red, white, yellow
+BG             = "lightGreen"
+FG             = "white"
+HighlightBG    = "lightGreen"
+HighlightFG    = "white"
+NoHighlightBG  = "white"
+NoHighlightFG  = "lightGreen"
+HighlightHdrBG = "red"
+HighlightHdrFG = "white"
--- a/demo/Makefile
+++ b/demo/Makefile
@@ -1,3 +0,0 @@
-all:
-	LC_ALL=en_US.UTF-8 asciinema rec --cols 50 --row 30 -c ./demo.sh --overwrite tmp.cast
-	agg tmp.cast tmp.gif
--- a/demo/demo.sh
+++ b/demo/demo.sh
@@ -1,31 +0,0 @@
-#!/bin/bash
-
-prompt() {
-    if test -n "$1"; then
-        echo
-        echo -n "% $*"
-        sleep 1
-        echo
-        $*
-        echo
-        echo -n "% "
-    else
-        echo -n "% "
-    fi
-}
-
-PATH=..:$PATH
-clear
-while IFS=$'\t' read -r flags table msg source _; do
-    echo "#"
-    echo "#   source tabular data:"
-    cat $table
-    echo
-    echo "#"
-    echo "#   $msg:"
-    prompt "tablizer $flags $table"
-  
-    sleep 4
-    clear
-done < <(yq -r tables.yaml \
-         | yq -r '.tables[] | [.flags, .table, .msg, .source] | @tsv')
--- a/demo/table.demo1
+++ b/demo/table.demo1
@@ -1,4 +0,0 @@
-NAME   DURATION   COUNT  WHEN
-beta   1d10h5m1s  33     3/1/2014
-alpha  4h35m      170    2013-Feb-03
-ceta   33d12h     9      06/Jan/2008 15:04:05 -0700
--- a/demo/table.demo2
+++ b/demo/table.demo2
@@ -1,3 +0,0 @@
-    PID TTY          TIME CMD
-  30912 pts/0    00:00:00 bash
-  49526 pts/0    00:00:00 ps
--- a/demo/tables.yaml
+++ b/demo/tables.yaml
@@ -1,54 +0,0 @@
-tables:
-# OUTPUTS
-  - flags: -A
-    table: table.demo1
-    msg: default output mode
-  - flags: -O
-    table: table.demo1
-    msg: orgmode output mode
-  - flags: -M
-    table: table.demo1
-    msg: markdown output mode
-  - flags: -S
-    table: table.demo1
-    msg: shell output mode
-  - flags: -X
-    table: table.demo1
-    msg: extended output mode
-  - flags: -Y
-    table: table.demo1
-    msg: yaml output mode
-  - flags: -C
-    table: table.demo1
-    msg: CSV output mode
-
-  # SORTS
-  - flags: -A -k 3
-    table: table.demo1
-    msg: sort by column 3
-  - flags: -A -k 4 -t
-    table: table.demo1
-    msg: sort by column 4 and sort type time
-  - flags: -A -k 2 -a
-    table: table.demo1
-    msg: sort by column 2 and sort type duration
-
-  # REDUCE
-  - flags: -A -c 1,3
-    table: table.demo1
-    msg: only display column 1 and 3
-  - flags: -A -c AM,RA
-    table: table.demo1
-    msg: only display columns matching /(RA|AM)/
-  - flags: -X -c 1,3
-    table: table.demo1
-    msg: only display column 1 and 3 in extended mode
-
-  # SEARCH
-  - flags: /20 -A
-    table: table.demo1
-    msg: only show rows matching /20
-  - flags: /20 -A -v
-    table: table.demo1
-    msg: only show rows NOT matching /20
-
--- a/demo/tablizer-demo.cast
+++ b/demo/tablizer-demo.cast
@@ -1,119 +0,0 @@
-{"version": 2, "width": 80, "height": 25, "timestamp": 1666890777, "env": {"SHELL": "/bin/bash", "TERM": "xterm-256color"}}
-[0.004618, "o", "\u001b[H\u001b[2J\u001b[3J"]
-[0.010297, "o", "#\r\n#   source tabular data:\r\n"]
-[0.010898, "o", "NAME   DURATION   COUNT  WHEN\r\nbeta   1d10h5m1s  33     3/1/2014\r\nalpha  4h35m      170    2013-Feb-03\r\nceta   33d12h     9      06/Jan/2008 15:04:05 -0700\r\n"]
-[0.011125, "o", "\r\n#\r\n"]
-[0.011177, "o", "#   default output mode:\r\n"]
-[0.011219, "o", "\r\n% tablizer -A table.demo1"]
-[1.011851, "o", "\r\n"]
-[1.013635, "o", "NAME(1)\tDURATION(2)\tCOUNT(3)\tWHEN(4)                    \r\nbeta   \t1d10h5m1s  \t33      \t3/1/2014                  \t\r\nalpha  \t4h35m      \t170     \t2013-Feb-03               \t\r\nceta   \t33d12h     \t9       \t06/Jan/2008 15:04:05 -0700\t\r\n"]
-[1.014021, "o", "\r\n% "]
-[5.015241, "o", "\u001b[H\u001b[2J\u001b[3J"]
-[5.015339, "o", "#\r\n#   source tabular data:\r\n"]
-[5.015688, "o", "NAME   DURATION   COUNT  WHEN\r\nbeta   1d10h5m1s  33     3/1/2014\r\nalpha  4h35m      170    2013-Feb-03\r\nceta   33d12h     9      06/Jan/2008 15:04:05 -0700\r\n"]
-[5.015776, "o", "\r\n#\r\n#   orgmode output mode:\r\n\r\n% tablizer -O table.demo1"]
-[6.016322, "o", "\r\n"]
-[6.01823, "o", "+---------+-------------+----------+----------------------------+\r\n| NAME(1) | DURATION(2) | COUNT(3) |          WHEN(4)           |\r\n+---------+-------------+----------+----------------------------+\r\n| beta    | 1d10h5m1s   |       33 | 3/1/2014                   |\r\n| alpha   | 4h35m       |      170 | 2013-Feb-03                |\r\n| ceta    | 33d12h      |        9 | 06/Jan/2008 15:04:05 -0700 |\r\n+---------+-------------+----------+----------------------------+\r\n"]
-[6.018497, "o", "\r\n% "]
-[10.020014, "o", "\u001b[H\u001b[2J\u001b[3J"]
-[10.020112, "o", "#\r\n#   source tabular data:\r\n"]
-[10.020573, "o", "NAME   DURATION   COUNT  WHEN\r\nbeta   1d10h5m1s  33     3/1/2014\r\nalpha  4h35m      170    2013-Feb-03\r\nceta   33d12h     9      06/Jan/2008 15:04:05 -0700\r\n"]
-[10.020643, "o", "\r\n#\r\n"]
-[10.02068, "o", "#   markdown output mode:\r\n\r\n% tablizer -M table.demo1"]
-[11.021559, "o", "\r\n"]
-[11.023551, "o", "| NAME(1) | DURATION(2) | COUNT(3) |          WHEN(4)           |\r\n|---------|-------------|----------|----------------------------|\r\n| beta    | 1d10h5m1s   |       33 | 3/1/2014                   |\r\n| alpha   | 4h35m       |      170 | 2013-Feb-03                |\r\n| ceta    | 33d12h      |        9 | 06/Jan/2008 15:04:05 -0700 |\r\n"]
-[11.023838, "o", "\r\n% "]
-[15.025244, "o", "\u001b[H\u001b[2J\u001b[3J"]
-[15.025345, "o", "#\r\n#   source tabular data:\r\n"]
-[15.025829, "o", "NAME   DURATION   COUNT  WHEN\r\nbeta   1d10h5m1s  33     3/1/2014\r\nalpha  4h35m      170    2013-Feb-03\r\nceta   33d12h     9      06/Jan/2008 15:04:05 -0700\r\n"]
-[15.025915, "o", "\r\n#\r\n#   shell output mode:\r\n"]
-[15.025931, "o", "\r\n"]
-[15.025948, "o", "% tablizer -S table.demo1"]
-[16.026714, "o", "\r\n"]
-[16.028606, "o", "NAME(1)=\"beta\" DURATION(2)=\"1d10h5m1s\" COUNT(3)=\"33\" WHEN(4)=\"3/1/2014\"\r\nNAME(1)=\"alpha\" DURATION(2)=\"4h35m\" COUNT(3)=\"170\" WHEN(4)=\"2013-Feb-03\"\r\nNAME(1)=\"ceta\" DURATION(2)=\"33d12h\" COUNT(3)=\"9\" WHEN(4)=\"06/Jan/2008 15:04:05 -0700\"\r\n"]
-[16.029144, "o", "\r\n% "]
-[20.030593, "o", "\u001b[H\u001b[2J\u001b[3J"]
-[20.030706, "o", "#\r\n#   source tabular data:\r\n"]
-[20.03121, "o", "NAME   DURATION   COUNT  WHEN\r\nbeta   1d10h5m1s  33     3/1/2014\r\nalpha  4h35m      170    2013-Feb-03\r\nceta   33d12h     9      06/Jan/2008 15:04:05 -0700\r\n"]
-[20.031277, "o", "\r\n#\r\n#   extended output mode:\r\n"]
-[20.031327, "o", "\r\n% tablizer -X table.demo1"]
-[21.032053, "o", "\r\n"]
-[21.033787, "o", "    NAME(1): beta\r\nDURATION(2): 1d10h5m1s\r\n   COUNT(3): 33\r\n    WHEN(4): 3/1/2014\r\n\r\n    NAME(1): alpha\r\nDURATION(2): 4h35m\r\n   COUNT(3): 170\r\n    WHEN(4): 2013-Feb-03\r\n\r\n    NAME(1): ceta\r\nDURATION(2): 33d12h\r\n   COUNT(3): 9\r\n    WHEN(4): 06/Jan/2008 15:04:05 -0700\r\n\r\n"]
-[21.034132, "o", "\r\n% "]
-[25.035531, "o", "\u001b[H\u001b[2J\u001b[3J"]
-[25.035585, "o", "#\r\n"]
-[25.035681, "o", "#   source tabular data:\r\n"]
-[25.036179, "o", "NAME   DURATION   COUNT  WHEN\r\nbeta   1d10h5m1s  33     3/1/2014\r\nalpha  4h35m      170    2013-Feb-03\r\nceta   33d12h     9      06/Jan/2008 15:04:05 -0700\r\n"]
-[25.036232, "o", "\r\n#\r\n"]
-[25.036274, "o", "#   yaml output mode:\r\n\r\n% tablizer -Y table.demo1"]
-[26.036928, "o", "\r\n"]
-[26.038674, "o", "entries:\r\n    - count: 33\r\n      duration: \"1d10h5m1s\"\r\n      name: \"beta\"\r\n      when: \"3/1/2014\"\r\n    - count: 170\r\n      duration: \"4h35m\"\r\n      name: \"alpha\"\r\n      when: \"2013-Feb-03\"\r\n    - count: 9\r\n      duration: \"33d12h\"\r\n      name: \"ceta\"\r\n      when: \"06/Jan/2008 15:04:05 -0700\"\r\n"]
-[26.038975, "o", "\r\n% "]
-[30.040539, "o", "\u001b[H\u001b[2J\u001b[3J"]
-[30.040659, "o", "#\r\n#   source tabular data:\r\n"]
-[30.041167, "o", "NAME   DURATION   COUNT  WHEN\r\nbeta   1d10h5m1s  33     3/1/2014\r\nalpha  4h35m      170    2013-Feb-03\r\nceta   33d12h     9      06/Jan/2008 15:04:05 -0700\r\n"]
-[30.041246, "o", "\r\n#\r\n#   CSV output mode:\r\n\r\n% tablizer -C table.demo1"]
-[31.042088, "o", "\r\n"]
-[31.043721, "o", "NAME,DURATION,COUNT,WHEN\r\nbeta,1d10h5m1s,33,3/1/2014\r\nalpha,4h35m,170,2013-Feb-03\r\nceta,33d12h,9,06/Jan/2008 15:04:05 -0700\r\n"]
-[31.043997, "o", "\r\n% "]
-[35.045523, "o", "\u001b[H\u001b[2J\u001b[3J"]
-[35.04563, "o", "#\r\n#   source tabular data:\r\n"]
-[35.046209, "o", "NAME   DURATION   COUNT  WHEN\r\nbeta   1d10h5m1s  33     3/1/2014\r\nalpha  4h35m      170    2013-Feb-03\r\nceta   33d12h     9      06/Jan/2008 15:04:05 -0700\r\n"]
-[35.046275, "o", "\r\n#\r\n#   sort by column 3:\r\n\r\n% tablizer -A -k 3 table.demo1"]
-[36.047083, "o", "\r\n"]
-[36.048793, "o", "NAME(1)\tDURATION(2)\tCOUNT(3)\tWHEN(4)                    \r\nalpha  \t4h35m      \t170     \t2013-Feb-03               \t\r\nbeta   \t1d10h5m1s  \t33      \t3/1/2014                  \t\r\nceta   \t33d12h     \t9       \t06/Jan/2008 15:04:05 -0700\t\r\n"]
-[36.049077, "o", "\r\n% "]
-[40.050739, "o", "\u001b[H\u001b[2J\u001b[3J"]
-[40.050925, "o", "#\r\n#   source tabular data:\r\n"]
-[40.051481, "o", "NAME   DURATION   COUNT  WHEN\r\nbeta   1d10h5m1s  33     3/1/2014\r\nalpha  4h35m      170    2013-Feb-03\r\nceta   33d12h     9      06/Jan/2008 15:04:05 -0700\r\n"]
-[40.051671, "o", "\r\n#\r\n#   sort by column 4 and sort type time:\r\n\r\n% tablizer -A -k 4 -t table.demo1"]
-[41.052486, "o", "\r\n"]
-[41.05454, "o", "NAME(1)\tDURATION(2)\tCOUNT(3)\tWHEN(4)                    \r\nceta   \t33d12h     \t9       \t06/Jan/2008 15:04:05 -0700\t\r\nalpha  \t4h35m      \t170     \t2013-Feb-03               \t\r\nbeta   \t1d10h5m1s  \t33      \t3/1/2014                  \t\r\n"]
-[41.054864, "o", "\r\n% "]
-[45.056297, "o", "\u001b[H\u001b[2J\u001b[3J"]
-[45.056405, "o", "#\r\n#   source tabular data:\r\n"]
-[45.056895, "o", "NAME   DURATION   COUNT  WHEN\r\nbeta   1d10h5m1s  33     3/1/2014\r\nalpha  4h35m      170    2013-Feb-03\r\nceta   33d12h     9      06/Jan/2008 15:04:05 -0700\r\n"]
-[45.056978, "o", "\r\n#\r\n"]
-[45.057023, "o", "#   sort by column 2 and sort type duration:\r\n"]
-[45.057073, "o", "\r\n% tablizer -A -k 2 -a table.demo1"]
-[46.057895, "o", "\r\n"]
-[46.059684, "o", "NAME(1)\tDURATION(2)\tCOUNT(3)\tWHEN(4)                    \r\nalpha  \t4h35m      \t170     \t2013-Feb-03               \t\r\nbeta   \t1d10h5m1s  \t33      \t3/1/2014                  \t\r\nceta   \t33d12h     \t9       \t06/Jan/2008 15:04:05 -0700\t\r\n"]
-[46.059988, "o", "\r\n% "]
-[50.061514, "o", "\u001b[H\u001b[2J\u001b[3J"]
-[50.061622, "o", "#\r\n#   source tabular data:\r\n"]
-[50.062091, "o", "NAME   DURATION   COUNT  WHEN\r\nbeta   1d10h5m1s  33     3/1/2014\r\nalpha  4h35m      170    2013-Feb-03\r\nceta   33d12h     9      06/Jan/2008 15:04:05 -0700\r\n"]
-[50.062188, "o", "\r\n#\r\n#   only display column 1 and 3:\r\n\r\n% tablizer -A -c 1,3 table.demo1"]
-[51.062985, "o", "\r\n"]
-[51.066293, "o", "NAME(1)\tCOUNT(3) \r\nbeta   \t33      \t\r\nalpha  \t170     \t\r\nceta   \t9       \t\r\n"]
-[51.066843, "o", "\r\n% "]
-[55.070781, "o", "\u001b[H\u001b[2J\u001b[3J"]
-[55.071327, "o", "#\r\n#   source tabular data:\r\n"]
-[55.073499, "o", "NAME   DURATION   COUNT  WHEN\r\nbeta   1d10h5m1s  33     3/1/2014\r\nalpha  4h35m      170    2013-Feb-03\r\nceta   33d12h     9      06/Jan/2008 15:04:05 -0700\r\n"]
-[55.073822, "o", "\r\n#\r\n#   only display columns matching /(RA|AM)/:\r\n"]
-[55.074188, "o", "\r\n% tablizer -A -c AM,RA table.demo1"]
-[56.07636, "o", "\r\n"]
-[56.078603, "o", "NAME(1)\tDURATION(2) \r\nbeta   \t1d10h5m1s  \t\r\nalpha  \t4h35m      \t\r\nceta   \t33d12h     \t\r\n"]
-[56.078957, "o", "\r\n% "]
-[60.080574, "o", "\u001b[H\u001b[2J\u001b[3J"]
-[60.080734, "o", "#\r\n#   source tabular data:\r\n"]
-[60.081286, "o", "NAME   DURATION   COUNT  WHEN\r\nbeta   1d10h5m1s  33     3/1/2014\r\nalpha  4h35m      170    2013-Feb-03\r\nceta   33d12h     9      06/Jan/2008 15:04:05 -0700\r\n"]
-[60.081418, "o", "\r\n#\r\n#   only display column 1 and 3 in extended mode:\r\n\r\n% tablizer -X -c 1,3 table.demo1"]
-[61.082844, "o", "\r\n"]
-[61.089822, "o", " NAME(1): beta\r\nCOUNT(3): 33\r\n\r\n NAME(1): alpha\r\nCOUNT(3): 170\r\n\r\n NAME(1): ceta\r\nCOUNT(3): 9\r\n\r\n"]
-[61.090969, "o", "\r\n% "]
-[65.096092, "o", "\u001b[H\u001b[2J\u001b[3J"]
-[65.096571, "o", "#\r\n#   source tabular data:\r\n"]
-[65.098736, "o", "NAME   DURATION   COUNT  WHEN\r\nbeta   1d10h5m1s  33     3/1/2014\r\nalpha  4h35m      170    2013-Feb-03\r\nceta   33d12h     9      06/Jan/2008 15:04:05 -0700\r\n"]
-[65.099085, "o", "\r\n#\r\n#   only show rows matching /20:\r\n"]
-[65.099283, "o", "\r\n% tablizer /20 -A table.demo1"]
-[66.101537, "o", "\r\n"]
-[66.109112, "o", "NAME(1)\tDURATION(2)\tCOUNT(3)\tWHEN(4)                    \r\nbeta   \t1d10h5m1s  \t33      \t3/1\u001b[102;30m/20\u001b[0m14                  \t\r\nceta   \t33d12h     \t9       \t06/Jan\u001b[102;30m/20\u001b[0m08 15:04:05 -0700\t\r\n"]
-[66.109405, "o", "\r\n% "]
-[70.11076, "o", "\u001b[H\u001b[2J\u001b[3J"]
-[70.110873, "o", "#\r\n#   source tabular data:\r\n"]
-[70.111365, "o", "NAME   DURATION   COUNT  WHEN\r\nbeta   1d10h5m1s  33     3/1/2014\r\nalpha  4h35m      170    2013-Feb-03\r\nceta   33d12h     9      06/Jan/2008 15:04:05 -0700\r\n"]
-[70.111469, "o", "\r\n#\r\n#   only show rows NOT matching /20:\r\n\r\n% tablizer /20 -A -v table.demo1"]
-[71.112738, "o", "\r\n"]
-[71.120032, "o", "NAME(1)\tDURATION(2)\tCOUNT(3)\tWHEN(4)     \r\nalpha  \t4h35m      \t170     \t2013-Feb-03\t\r\n"]
-[71.121127, "o", "\r\n% "]
-[75.126199, "o", "\u001b[H\u001b[2J\u001b[3J"]
--- a/demo/tablizer-demo.gif
+++ b/demo/tablizer-demo.gif
--- a/go.mod
+++ b/go.mod
@@ -1,24 +1,72 @@
-module github.com/tlinden/tablizer
+module codeberg.org/scip/tablizer

-go 1.18
+go 1.24.0

 require (
-	github.com/alecthomas/repr v0.1.1
+	github.com/alecthomas/repr v0.5.2
 	github.com/araddon/dateparse v0.0.0-20210429162001-6b43995a97de
-	github.com/gookit/color v1.5.2
-	github.com/olekukonko/tablewriter v0.0.5
-	github.com/spf13/cobra v1.6.1
+	github.com/charmbracelet/bubbles v0.21.0
+	github.com/charmbracelet/bubbletea v1.3.10
+	github.com/charmbracelet/lipgloss v1.1.0
+	github.com/evertras/bubble-table v0.19.2
+	github.com/gookit/color v1.6.0
+	github.com/hashicorp/hcl/v2 v2.24.0
+	github.com/lithammer/fuzzysearch v1.1.8
+	github.com/mattn/go-isatty v0.0.20
+	github.com/olekukonko/tablewriter v1.1.0
+	github.com/rogpeppe/go-internal v1.14.1
+	github.com/spf13/cobra v1.10.1
+	github.com/stretchr/testify v1.11.1
+	github.com/tiagomelo/go-clipboard v0.1.2
 	gopkg.in/yaml.v3 v3.0.1
 )

 require (
-	github.com/inconshreveable/mousetrap v1.0.1 // indirect
-	github.com/mattn/go-runewidth v0.0.14 // indirect
-
-    // force release. > 0.4. doesnt build everywhere, see:
-    // https://github.com/TLINDEN/tablizer/actions/runs/3396457307/jobs/5647544615
-    github.com/rivo/uniseg v0.2.0 // indirect
-	github.com/spf13/pflag v1.0.5 // indirect
+	dario.cat/mergo v1.0.1 // indirect
+	github.com/Masterminds/goutils v1.1.1 // indirect
+	github.com/Masterminds/semver/v3 v3.3.0 // indirect
+	github.com/Masterminds/sprig/v3 v3.3.0 // indirect
+	github.com/agext/levenshtein v1.2.3 // indirect
+	github.com/apparentlymart/go-textseg/v15 v15.0.0 // indirect
+	github.com/atotto/clipboard v0.1.4 // indirect
+	github.com/aymanbagabas/go-osc52/v2 v2.0.1 // indirect
+	github.com/charmbracelet/colorprofile v0.3.1 // indirect
+	github.com/charmbracelet/x/ansi v0.10.1 // indirect
+	github.com/charmbracelet/x/cellbuf v0.0.13 // indirect
+	github.com/charmbracelet/x/term v0.2.1 // indirect
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/erikgeiser/coninput v0.0.0-20211004153227-1c3628e74d0f // indirect
+	github.com/fatih/color v1.18.0 // indirect
+	github.com/google/go-cmp v0.6.0 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/huandu/xstrings v1.5.0 // indirect
+	github.com/inconshreveable/mousetrap v1.1.0 // indirect
+	github.com/lucasb-eyer/go-colorful v1.2.0 // indirect
+	github.com/mattn/go-colorable v0.1.14 // indirect
+	github.com/mattn/go-localereader v0.0.1 // indirect
+	github.com/mattn/go-runewidth v0.0.16 // indirect
+	github.com/mitchellh/copystructure v1.2.0 // indirect
+	github.com/mitchellh/go-wordwrap v1.0.1 // indirect
+	github.com/mitchellh/reflectwalk v1.0.2 // indirect
+	github.com/muesli/ansi v0.0.0-20230316100256-276c6243b2f6 // indirect
+	github.com/muesli/cancelreader v0.2.2 // indirect
+	github.com/muesli/reflow v0.3.0 // indirect
+	github.com/muesli/termenv v0.16.0 // indirect
+	github.com/olekukonko/errors v1.1.0 // indirect
+	github.com/olekukonko/ll v0.0.9 // indirect
+	github.com/pkg/errors v0.9.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/rivo/uniseg v0.4.7 // indirect
+	github.com/shopspring/decimal v1.4.0 // indirect
+	github.com/spf13/cast v1.7.0 // indirect
+	github.com/spf13/pflag v1.0.9 // indirect
 	github.com/xo/terminfo v0.0.0-20220910002029-abceb7e1c41e // indirect
-	golang.org/x/sys v0.1.0 // indirect
+	github.com/zclconf/go-cty v1.16.3 // indirect
+	golang.org/x/crypto v0.38.0 // indirect
+	golang.org/x/exp v0.0.0-20231006140011-7918f672742d // indirect
+	golang.org/x/mod v0.21.0 // indirect
+	golang.org/x/sync v0.15.0 // indirect
+	golang.org/x/sys v0.36.0 // indirect
+	golang.org/x/text v0.25.0 // indirect
+	golang.org/x/tools v0.26.0 // indirect
 )
--- a/go.sum
+++ b/go.sum
@@ -1,45 +1,176 @@
-github.com/alecthomas/repr v0.1.1 h1:87P60cSmareLAxMc4Hro0r2RBY4ROm0dYwkJNpS4pPs=
-github.com/alecthomas/repr v0.1.1/go.mod h1:Fr0507jx4eOXV7AlPV6AVZLYrLIuIeSOWtW57eE/O/4=
+dario.cat/mergo v1.0.1 h1:Ra4+bf83h2ztPIQYNP99R6m+Y7KfnARDfID+a+vLl4s=
+dario.cat/mergo v1.0.1/go.mod h1:uNxQE+84aUszobStD9th8a29P2fMDhsBdgRYvZOxGmk=
+github.com/Masterminds/goutils v1.1.1 h1:5nUrii3FMTL5diU80unEVvNevw1nH4+ZV4DSLVJLSYI=
+github.com/Masterminds/goutils v1.1.1/go.mod h1:8cTjp+g8YejhMuvIA5y2vz3BpJxksy863GQaJW2MFNU=
+github.com/Masterminds/semver/v3 v3.3.0 h1:B8LGeaivUe71a5qox1ICM/JLl0NqZSW5CHyL+hmvYS0=
+github.com/Masterminds/semver/v3 v3.3.0/go.mod h1:4V+yj/TJE1HU9XfppCwVMZq3I84lprf4nC11bSS5beM=
+github.com/Masterminds/sprig/v3 v3.3.0 h1:mQh0Yrg1XPo6vjYXgtf5OtijNAKJRNcTdOOGZe3tPhs=
+github.com/Masterminds/sprig/v3 v3.3.0/go.mod h1:Zy1iXRYNqNLUolqCpL4uhk6SHUMAOSCzdgBfDb35Lz0=
+github.com/agext/levenshtein v1.2.3 h1:YB2fHEn0UJagG8T1rrWknE3ZQzWM06O8AMAatNn7lmo=
+github.com/agext/levenshtein v1.2.3/go.mod h1:JEDfjyjHDjOF/1e4FlBE/PkbqA9OfWu2ki2W0IB5558=
+github.com/alecthomas/repr v0.5.2 h1:SU73FTI9D1P5UNtvseffFSGmdNci/O6RsqzeXJtP0Qs=
+github.com/alecthomas/repr v0.5.2/go.mod h1:Fr0507jx4eOXV7AlPV6AVZLYrLIuIeSOWtW57eE/O/4=
+github.com/apparentlymart/go-textseg/v15 v15.0.0 h1:uYvfpb3DyLSCGWnctWKGj857c6ew1u1fNQOlOtuGxQY=
+github.com/apparentlymart/go-textseg/v15 v15.0.0/go.mod h1:K8XmNZdhEBkdlyDdvbmmsvpAG721bKi0joRfFdHIWJ4=
 github.com/araddon/dateparse v0.0.0-20210429162001-6b43995a97de h1:FxWPpzIjnTlhPwqqXc4/vE0f7GvRjuAsbW+HOIe8KnA=
 github.com/araddon/dateparse v0.0.0-20210429162001-6b43995a97de/go.mod h1:DCaWoUhZrYW9p1lxo/cm8EmUOOzAPSEZNGF2DK1dJgw=
-github.com/cpuguy83/go-md2man/v2 v2.0.2/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
+github.com/atotto/clipboard v0.1.4 h1:EH0zSVneZPSuFR11BlR9YppQTVDbh5+16AmcJi4g1z4=
+github.com/atotto/clipboard v0.1.4/go.mod h1:ZY9tmq7sm5xIbd9bOK4onWV4S6X0u6GY7Vn0Yu86PYI=
+github.com/aymanbagabas/go-osc52/v2 v2.0.1 h1:HwpRHbFMcZLEVr42D4p7XBqjyuxQH5SMiErDT4WkJ2k=
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+golang.org/x/exp v0.0.0-20231006140011-7918f672742d/go.mod h1:ldy0pHrwJyGW56pPQzzkH36rKxoZW1tw7ZJpeKx+hdo=
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
+golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
+golang.org/x/mod v0.21.0 h1:vvrHzRwRfVKSiLrG+d4FMl/Qi4ukBCE6kZlTUkDYRT0=
+golang.org/x/mod v0.21.0/go.mod h1:6SkKJ3Xj0I0BrPOZoBy3bdMptDDU9oJrpohJ3eWZ1fY=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
+golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
+golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.15.0 h1:KWH3jNZsfyT6xfAfKiz6MRNmd46ByHDYaZ7KSkCtdW8=
+golang.org/x/sync v0.15.0/go.mod h1:1dzgHSNfp02xaA81J2MS99Qcpr2w7fw1gpm99rleRqA=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20210809222454-d867a43fc93e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.36.0 h1:KVRy2GtZBrk1cBYA7MKu5bEZFxQk4NIDV6RLVcC8o0k=
+golang.org/x/sys v0.36.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
+golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
+golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
+golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
+golang.org/x/text v0.25.0 h1:qVyWApTSYLk/drJRO5mDlNYskwQznZmkpV2c8q9zls4=
+golang.org/x/text v0.25.0/go.mod h1:WEdwpYrmk1qmdHvhkSTNPm3app7v4rsT8F2UD6+VHIA=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
+golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
+golang.org/x/tools v0.26.0 h1:v/60pFQmzmT9ExmjDv2gGIfi3OqfKoEP6I5+umXlbnQ=
+golang.org/x/tools v0.26.0/go.mod h1:TPVVj70c7JJ3WCazhD8OdXcZg/og+b9+tH/KxylGwH0=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
--- a/lib/common.go
+++ b/lib/common.go
@@ -1,26 +0,0 @@
-/*
-Copyright © 2022 Thomas von Dein
-
-This program is free software: you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation, either version 3 of the License, or
-(at your option) any later version.
-
-This program is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-GNU General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program. If not, see <http://www.gnu.org/licenses/>.
-*/
-
-package lib
-
-// contains a whole parsed table
-type Tabdata struct {
-	maxwidthHeader int      // longest header
-	columns        int      // count
-	headers        []string // [ "ID", "NAME", ...]
-	entries        [][]string
-}
--- a/lib/filter.go
+++ b/lib/filter.go
@@ -0,0 +1,192 @@
+/*
+Copyright © 2022-2025 Thomas von Dein
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package lib
+
+import (
+	"bufio"
+	"io"
+	"strings"
+
+	"github.com/lithammer/fuzzysearch/fuzzy"
+	"codeberg.org/scip/tablizer/cfg"
+)
+
+/*
+* [!]Match a  line, use fuzzy  search for normal pattern  strings and
+* regexp otherwise.
+
+		'foo bar'  foo, /bar/!  => false => line contains foo and not (not bar)
+	    'foo nix'  foo, /bar/!  => ture  => line contains foo and (not bar)
+		'foo bar'  foo, /bar/   => true  => line contains both foo and bar
+		'foo nix'  foo, /bar/   => false => line does not contain bar
+		'foo bar'  foo, /nix/   => false => line does not contain nix
+*/
+func matchPattern(conf cfg.Config, line string) bool {
+	if len(conf.Patterns) == 0 {
+		// any line always matches ""
+		return true
+	}
+
+	if conf.UseFuzzySearch {
+		// fuzzy search only considers the 1st pattern
+		return fuzzy.MatchFold(conf.Patterns[0].Pattern, line)
+	}
+
+	var match int
+
+	//fmt.Printf("<%s>\n", line)
+	for _, re := range conf.Patterns {
+		patmatch := re.PatternRe.MatchString(line)
+		if re.Negate {
+			// toggle the meaning of match
+			patmatch = !patmatch
+		}
+
+		if patmatch {
+			match++
+		}
+
+		//fmt.Printf("patmatch: %t, match: %d, pattern: %s, negate: %t\n", patmatch, match, re.Pattern, re.Negate)
+	}
+
+	// fmt.Printf("result: %t\n", match == len(conf.Patterns))
+	//fmt.Println()
+	return match == len(conf.Patterns)
+}
+
+/*
+ * Filter parsed data by fields. The  filter is positive, so if one or
+ * more filters match on a row, it  will be kept, otherwise it will be
+ * excluded.
+ */
+func FilterByFields(conf cfg.Config, data *Tabdata) (*Tabdata, bool, error) {
+	if len(conf.Filters) == 0 {
+		// no filters, no checking
+		return nil, false, nil
+	}
+
+	newdata := data.CloneEmpty()
+
+	for _, row := range data.entries {
+		keep := true
+
+		for idx, header := range data.headers {
+			lcheader := strings.ToLower(header)
+			if !Exists(conf.Filters, lcheader) {
+				// do not filter by unspecified field
+				continue
+			}
+
+			match := conf.Filters[lcheader].Regex.MatchString(row[idx])
+			if conf.Filters[lcheader].Negate {
+				match = !match
+			}
+
+			if !match {
+				keep = false
+				break
+			}
+		}
+
+		if keep == !conf.InvertMatch {
+			// also apply -v
+			newdata.entries = append(newdata.entries, row)
+		}
+	}
+
+	return &newdata, true, nil
+}
+
+/*
+ * Transpose fields using search/replace regexp.
+ */
+func TransposeFields(conf cfg.Config, data *Tabdata) (*Tabdata, bool, error) {
+	if len(conf.UseTransposers) == 0 {
+		// nothing to be done
+		return nil, false, nil
+	}
+
+	newdata := data.CloneEmpty()
+	transposed := false
+
+	for _, row := range data.entries {
+		transposedrow := false
+
+		for idx := range data.headers {
+			transposeidx, hasone := findindex(conf.UseTransposeColumns, idx+1)
+			if hasone {
+				row[idx] =
+					conf.UseTransposers[transposeidx].Search.ReplaceAllString(
+						row[idx],
+						conf.UseTransposers[transposeidx].Replace,
+					)
+				transposedrow = true
+			}
+		}
+
+		if transposedrow {
+			// also apply -v
+			newdata.entries = append(newdata.entries, row)
+			transposed = true
+		}
+	}
+
+	return &newdata, transposed, nil
+}
+
+/* generic map.Exists(key) */
+func Exists[K comparable, V any](m map[K]V, v K) bool {
+	if _, ok := m[v]; ok {
+		return true
+	}
+
+	return false
+}
+
+/*
+ * Filters the whole input lines, returns filtered lines
+ */
+func FilterByPattern(conf cfg.Config, input io.Reader) (io.Reader, error) {
+	if len(conf.Patterns) == 0 {
+		return input, nil
+	}
+
+	scanner := bufio.NewScanner(input)
+	lines := []string{}
+	hadFirst := false
+
+	for scanner.Scan() {
+		line := strings.TrimSpace(scanner.Text())
+		if hadFirst {
+			// don't match 1st line, it's the header
+			if matchPattern(conf, line) == conf.InvertMatch {
+				// by default  -v is false, so if a  line does NOT
+				// match the pattern, we will ignore it. However,
+				// if the user specified -v, the matching is inverted,
+				// so we ignore all lines, which DO match.
+				continue
+			}
+		}
+
+		lines = append(lines, line)
+
+		hadFirst = true
+	}
+
+	return strings.NewReader(strings.Join(lines, "\n")), nil
+}
--- a/lib/filter_test.go
+++ b/lib/filter_test.go
@@ -0,0 +1,172 @@
+/*
+Copyright © 2024-2025 Thomas von Dein
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package lib
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"codeberg.org/scip/tablizer/cfg"
+)
+
+func TestMatchPattern(t *testing.T) {
+	var input = []struct {
+		name     string
+		fuzzy    bool
+		patterns []*cfg.Pattern
+		line     string
+	}{
+		{
+			name:     "normal",
+			patterns: []*cfg.Pattern{{Pattern: "haus"}},
+			line:     "hausparty",
+		},
+		{
+			name:     "fuzzy",
+			patterns: []*cfg.Pattern{{Pattern: "hpt"}},
+			line:     "haus-party-termin",
+			fuzzy:    true,
+		},
+	}
+
+	for _, inputdata := range input {
+		testname := fmt.Sprintf("match-pattern-%s", inputdata.name)
+
+		t.Run(testname, func(t *testing.T) {
+			conf := cfg.Config{}
+
+			if inputdata.fuzzy {
+				conf.UseFuzzySearch = true
+			}
+
+			err := conf.PreparePattern(inputdata.patterns)
+
+			assert.NoError(t, err)
+
+			res := matchPattern(conf, inputdata.line)
+			assert.EqualValues(t, true, res)
+		})
+	}
+}
+
+func TestFilterByFields(t *testing.T) {
+	data := Tabdata{
+		headers: []string{
+			"ONE", "TWO", "THREE",
+		},
+		entries: [][]string{
+			{"asd", "igig", "cxxxncnc"},
+			{"19191", "EDD 1", "x"},
+			{"8d8", "AN 1", "y"},
+		},
+	}
+
+	var input = []struct {
+		name   string
+		filter []string
+		expect Tabdata
+		invert bool
+	}{
+		{
+			name:   "one-field",
+			filter: []string{"one=19"},
+			expect: Tabdata{
+				headers: []string{
+					"ONE", "TWO", "THREE",
+				},
+				entries: [][]string{
+					{"19191", "EDD 1", "x"},
+				},
+			},
+		},
+
+		{
+			name:   "one-field-negative",
+			filter: []string{"one!=asd"},
+			expect: Tabdata{
+				headers: []string{
+					"ONE", "TWO", "THREE",
+				},
+				entries: [][]string{
+					{"19191", "EDD 1", "x"},
+					{"8d8", "AN 1", "y"},
+				},
+			},
+		},
+
+		{
+			name:   "one-field-inverted",
+			filter: []string{"one=19"},
+			invert: true,
+			expect: Tabdata{
+				headers: []string{
+					"ONE", "TWO", "THREE",
+				},
+				entries: [][]string{
+					{"asd", "igig", "cxxxncnc"},
+					{"8d8", "AN 1", "y"},
+				},
+			},
+		},
+
+		{
+			name:   "many-fields",
+			filter: []string{"one=19", "two=DD"},
+			expect: Tabdata{
+				headers: []string{
+					"ONE", "TWO", "THREE",
+				},
+				entries: [][]string{
+					{"19191", "EDD 1", "x"},
+				},
+			},
+		},
+
+		{
+			name:   "many-fields-inverted",
+			filter: []string{"one=19", "two=DD"},
+			invert: true,
+			expect: Tabdata{
+				headers: []string{
+					"ONE", "TWO", "THREE",
+				},
+				entries: [][]string{
+					{"asd", "igig", "cxxxncnc"},
+					{"8d8", "AN 1", "y"},
+				},
+			},
+		},
+	}
+
+	for _, inputdata := range input {
+		testname := fmt.Sprintf("filter-by-fields-%s", inputdata.name)
+
+		t.Run(testname, func(t *testing.T) {
+			conf := cfg.Config{Rawfilters: inputdata.filter, InvertMatch: inputdata.invert}
+
+			err := conf.PrepareFilters()
+
+			assert.NoError(t, err)
+
+			data, _, _ := FilterByFields(conf, &data)
+
+			assert.EqualValues(t, inputdata.expect, *data)
+		})
+	}
+}
--- a/lib/helpers.go
+++ b/lib/helpers.go
@@ -20,145 +20,283 @@ package lib
 import (
 	"errors"
 	"fmt"
-	"github.com/gookit/color"
-	"github.com/tlinden/tablizer/cfg"
 	"os"
 	"regexp"
-	"sort"
+	"slices"
 	"strconv"
 	"strings"
+
+	"github.com/gookit/color"
+	"codeberg.org/scip/tablizer/cfg"
 )

-func contains(s []int, e int) bool {
-	for _, a := range s {
+func findindex(s []int, e int) (int, bool) {
+	for i, a := range s {
 		if a == e {
-			return true
+			return i, true
 		}
 	}
-	return false
+
+	return 0, false
 }

-// parse columns list given  with -c, modifies config.UseColumns based
-// on eventually given regex
-func PrepareColumns(c *cfg.Config, data *Tabdata) error {
-	if len(c.Columns) > 0 {
-		for _, use := range strings.Split(c.Columns, ",") {
-			if len(use) == 0 {
-				msg := fmt.Sprintf("Could not parse columns list %s: empty column", c.Columns)
-				return errors.New(msg)
-			}
+// validate the consitency of parsed data
+func ValidateConsistency(data *Tabdata) error {
+	expectedfields := len(data.headers)

-			usenum, err := strconv.Atoi(use)
-			if err != nil {
-				// might be a regexp
-				colPattern, err := regexp.Compile(use)
-				if err != nil {
-					msg := fmt.Sprintf("Could not parse columns list %s: %v", c.Columns, err)
-					return errors.New(msg)
-				}
-
-				// find matching header fields
-				for i, head := range data.headers {
-					if colPattern.MatchString(head) {
-						c.UseColumns = append(c.UseColumns, i+1)
-					}
-
-				}
-			} else {
-				// we digress from go  best practises here, because if
-				// a colum spec is not a number, we process them above
-				// inside the err handler  for atoi(). so only add the
-				// number, if it's really just a number.
-				c.UseColumns = append(c.UseColumns, usenum)
-			}
+	for idx, row := range data.entries {
+		if len(row) != expectedfields {
+			return fmt.Errorf("row %d does not contain expected %d elements, but %d",
+				idx, expectedfields, len(row))
 		}
-
-		// deduplicate: put all values into a map (value gets map key)
-		// thereby  removing duplicates,  extract keys into  new slice
-		// and sort it
-		imap := make(map[int]int, len(c.UseColumns))
-		for _, i := range c.UseColumns {
-			imap[i] = 0
-		}
-		c.UseColumns = nil
-		for k := range imap {
-			c.UseColumns = append(c.UseColumns, k)
-		}
-		sort.Ints(c.UseColumns)
 	}
+
 	return nil
 }

+// parse columns list given  with -c, modifies config.UseColumns based
+// on eventually given regex.
+// This is an output filter, because -cN,N,... is being applied AFTER
+// processing of the input data.
+func PrepareColumns(conf *cfg.Config, data *Tabdata) error {
+	// -c columns
+	usecolumns, err := PrepareColumnVars(conf.Columns, data)
+	if err != nil {
+		return err
+	}
+
+	conf.UseColumns = usecolumns
+
+	// -y columns
+	useyankcolumns, err := PrepareColumnVars(conf.YankColumns, data)
+	if err != nil {
+		return err
+	}
+
+	conf.UseYankColumns = useyankcolumns
+
+	return nil
+}
+
+// Same thing as above but for -T option, which is an input option,
+// because transposers are being applied before output.
+func PrepareTransposerColumns(conf *cfg.Config, data *Tabdata) error {
+	// -T columns
+	usetransposecolumns, err := PrepareColumnVars(conf.TransposeColumns, data)
+	if err != nil {
+		return err
+	}
+
+	conf.UseTransposeColumns = usetransposecolumns
+
+	// verify that columns and transposers match and prepare transposer structs
+	if err := conf.PrepareTransposers(); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// output option, prepare -k1,2 sort fields
+func PrepareSortColumns(conf *cfg.Config, data *Tabdata) error {
+	// -c columns
+	usecolumns, err := PrepareColumnVars(conf.SortByColumn, data)
+	if err != nil {
+		return err
+	}
+
+	conf.UseSortByColumn = usecolumns
+
+	return nil
+}
+
+func PrepareColumnVars(columns string, data *Tabdata) ([]int, error) {
+	if columns == "" {
+		return nil, nil
+	}
+
+	usecolumns := []int{}
+
+	isregex := regexp.MustCompile(`\W`)
+
+	for _, columnpattern := range strings.Split(columns, ",") {
+		if len(columnpattern) == 0 {
+			return nil, fmt.Errorf("could not parse columns list %s: empty column", columns)
+		}
+
+		usenum, err := strconv.Atoi(columnpattern)
+		if err != nil {
+			// not a number
+
+			if !isregex.MatchString(columnpattern) {
+				// is not a regexp (contains no non-word chars)
+				// lc() it so that word searches are case insensitive
+				columnpattern = strings.ToLower(columnpattern)
+
+				for i, head := range data.headers {
+					if columnpattern == strings.ToLower(head) {
+						usecolumns = append(usecolumns, i+1)
+					}
+				}
+			} else {
+				colPattern, err := regexp.Compile("(?i)" + columnpattern)
+				if err != nil {
+					msg := fmt.Sprintf("Could not parse columns list %s: %v", columns, err)
+
+					return nil, errors.New(msg)
+				}
+
+				// find matching header fields, ignoring case
+				for i, head := range data.headers {
+					if colPattern.MatchString(strings.ToLower(head)) {
+						usecolumns = append(usecolumns, i+1)
+					}
+				}
+			}
+		} else {
+			// we digress from go  best practises here, because if
+			// a colum spec is not a number, we process them above
+			// inside the err handler  for atoi(). so only add the
+			// number, if it's really just a number.
+			usecolumns = append(usecolumns, usenum)
+		}
+	}
+
+	// deduplicate columns, preserve order
+	deduped := []int{}
+	for _, i := range usecolumns {
+		if !slices.Contains(deduped, i) {
+			deduped = append(deduped, i)
+		}
+	}
+
+	return deduped, nil
+}
+
 // prepare headers: add numbers to headers
-func numberizeAndReduceHeaders(c cfg.Config, data *Tabdata) {
-	numberedHeaders := []string{}
+func numberizeAndReduceHeaders(conf cfg.Config, data *Tabdata) {
+	numberedHeaders := make([]string, len(data.headers))
+
 	maxwidth := 0 // start from scratch, so we only look at displayed column widths

-	for i, head := range data.headers {
-		headlen := 0
-		if len(c.Columns) > 0 {
-			// -c specified
-			if !contains(c.UseColumns, i+1) {
-				// ignore this one
-				continue
-			}
-		}
-		if c.NoNumbering {
-			numberedHeaders = append(numberedHeaders, head)
-			headlen = len(head)
+	// add numbers to headers if needed, get widest cell width
+	for idx, head := range data.headers {
+		var headlen int
+
+		if conf.Numbering {
+			newhead := fmt.Sprintf("%s(%d)", head, idx+1)
+			numberedHeaders[idx] = newhead
+			headlen = len(newhead)
 		} else {
-			numhead := fmt.Sprintf("%s(%d)", head, i+1)
-			headlen = len(numhead)
-			numberedHeaders = append(numberedHeaders, numhead)
+			headlen = len(head)
 		}

 		if headlen > maxwidth {
 			maxwidth = headlen
 		}
 	}
-	data.headers = numberedHeaders
+
+	if conf.Numbering {
+		data.headers = numberedHeaders
+	}
+
+	if len(conf.UseColumns) > 0 {
+		// re-align headers based on user requested column list
+		headers := make([]string, len(conf.UseColumns))
+
+		for i, col := range conf.UseColumns {
+			for idx := range data.headers {
+				if col-1 == idx {
+					headers[i] = data.headers[col-1]
+				}
+			}
+		}
+
+		data.headers = headers
+	}
+
 	if data.maxwidthHeader != maxwidth && maxwidth > 0 {
 		data.maxwidthHeader = maxwidth
 	}
 }

 // exclude columns, if any
-func reduceColumns(c cfg.Config, data *Tabdata) {
-	if len(c.Columns) > 0 {
+func reduceColumns(conf cfg.Config, data *Tabdata) {
+	if len(conf.Columns) > 0 {
 		reducedEntries := [][]string{}
-		var reducedEntry []string
-		for _, entry := range data.entries {
-			reducedEntry = nil
-			for i, value := range entry {
-				if !contains(c.UseColumns, i+1) {
-					continue
-				}

-				reducedEntry = append(reducedEntry, value)
+		for _, entry := range data.entries {
+			var reducedEntry []string
+
+			for _, col := range conf.UseColumns {
+				col--
+
+				for idx, value := range entry {
+					if idx == col {
+						reducedEntry = append(reducedEntry, value)
+					}
+				}
 			}
+
 			reducedEntries = append(reducedEntries, reducedEntry)
 		}
+
 		data.entries = reducedEntries
 	}
 }

-func trimRow(row []string) []string {
-	// FIXME: remove this when we only use Tablewriter and strip in ParseFile()!
-	var fixedrow []string
-	for _, cell := range row {
-		fixedrow = append(fixedrow, strings.TrimSpace(cell))
-	}
+// FIXME: refactor this beast!
+func colorizeData(conf cfg.Config, output string) string {
+	switch {
+	case conf.UseHighlight && color.IsConsole(os.Stdout):
+		highlight := true
+		colorized := ""
+		first := true

-	return fixedrow
-}
+		for _, line := range strings.Split(output, "\n") {
+			if highlight {
+				if first {
+					// we  need to add  two spaces to the  header line
+					//  because tablewriter omits them for some reason
+					//  in pprint mode. This doesn't matter as long as
+					//  we don't use colorization. But with colors the
+					// missing spaces can be seen.
+					if conf.OutputMode == cfg.ASCII {
+						line += "  "
+					}

-func colorizeData(c cfg.Config, output string) string {
-	if len(c.Pattern) > 0 && !c.NoColor && color.IsConsole(os.Stdout) {
-		r := regexp.MustCompile("(" + c.Pattern + ")")
-		return r.ReplaceAllStringFunc(output, func(in string) string {
-			return c.ColorStyle.Sprint(in)
-		})
-	} else {
+					line = conf.HighlightHdrStyle.Sprint(line)
+					first = false
+				} else {
+					line = conf.HighlightStyle.Sprint(line)
+				}
+			} else {
+				line = conf.NoHighlightStyle.Sprint(line)
+			}
+
+			highlight = !highlight
+
+			colorized += line + "\n"
+		}
+
+		return colorized
+
+	case len(conf.Patterns) > 0 && !conf.NoColor && color.IsConsole(os.Stdout):
+		out := output
+
+		for _, re := range conf.Patterns {
+			if !re.Negate {
+				r := regexp.MustCompile("(" + re.Pattern + ")")
+
+				out = r.ReplaceAllStringFunc(out, func(in string) string {
+					return conf.ColorStyle.Sprint(in)
+				})
+			}
+		}
+
+		return out
+
+	default:
 		return output
 	}
 }
--- a/lib/helpers_test.go
+++ b/lib/helpers_test.go
@@ -19,9 +19,11 @@ package lib

 import (
 	"fmt"
-	"github.com/tlinden/tablizer/cfg"
-	"reflect"
+	"slices"
 	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"codeberg.org/scip/tablizer/cfg"
 )

 func TestContains(t *testing.T) {
@@ -37,10 +39,9 @@ func TestContains(t *testing.T) {
 	for _, tt := range tests {
 		testname := fmt.Sprintf("contains-%d,%d,%t", tt.list, tt.search, tt.want)
 		t.Run(testname, func(t *testing.T) {
-			answer := contains(tt.list, tt.search)
-			if answer != tt.want {
-				t.Errorf("got %t, want %t", answer, tt.want)
-			}
+			answer := slices.Contains(tt.list, tt.search)
+
+			assert.EqualValues(t, tt.want, answer)
 		})
 	}
 }
@@ -66,24 +67,98 @@ func TestPrepareColumns(t *testing.T) {
 	}{
 		{"1,2,3", []int{1, 2, 3}, false},
 		{"1,2,", []int{}, true},
-		{"T", []int{2, 3}, false},
-		{"T,2,3", []int{2, 3}, false},
+		{"T.", []int{2, 3}, false},
+		{"T.,2,3", []int{2, 3}, false},
 		{"[a-z,4,5", []int{4, 5}, true}, // invalid regexp
 	}

-	for _, tt := range tests {
-		testname := fmt.Sprintf("PrepareColumns-%s-%t", tt.input, tt.wanterror)
+	for _, testdata := range tests {
+		testname := fmt.Sprintf("PrepareColumns-%s-%t",
+			testdata.input, testdata.wanterror)
 		t.Run(testname, func(t *testing.T) {
-			c := cfg.Config{Columns: tt.input}
-			err := PrepareColumns(&c, &data)
-			if err != nil {
-				if !tt.wanterror {
-					t.Errorf("got error: %v", err)
-				}
+			conf := cfg.Config{Columns: testdata.input}
+			err := PrepareColumns(&conf, &data)
+
+			if testdata.wanterror {
+				assert.Error(t, err)
 			} else {
-				if !reflect.DeepEqual(c.UseColumns, tt.exp) {
-					t.Errorf("got: %v, expected: %v", c.UseColumns, tt.exp)
-				}
+				assert.NoError(t, err)
+				assert.EqualValues(t, testdata.exp, conf.UseColumns)
+			}
+		})
+	}
+}
+
+func TestPrepareTransposerColumns(t *testing.T) {
+	data := Tabdata{
+		maxwidthHeader: 5,
+		columns:        3,
+		headers: []string{
+			"ONE", "TWO", "THREE",
+		},
+		entries: [][]string{
+			{
+				"2", "3", "4",
+			},
+		},
+	}
+
+	var tests = []struct {
+		input     string
+		transp    []string
+		exp       int
+		wanterror bool // expect error
+	}{
+		{
+			"1",
+			[]string{`/\d/x/`},
+			1,
+			false,
+		},
+		{
+			"T.", // will match [T]WO and [T]HREE
+			[]string{`/\d/x/`, `/.//`},
+			2,
+			false,
+		},
+		{
+			"TH.,2",
+			[]string{`/\d/x/`, `/.//`},
+			2,
+			false,
+		},
+		{
+			"1",
+			[]string{},
+			1,
+			true,
+		},
+		{
+			"",
+			[]string{`|.|N|`},
+			0,
+			true,
+		},
+		{
+			"1",
+			[]string{`|.|N|`},
+			1,
+			false,
+		},
+	}
+
+	for _, testdata := range tests {
+		testname := fmt.Sprintf("PrepareTransposerColumns-%s-%t", testdata.input, testdata.wanterror)
+		t.Run(testname, func(t *testing.T) {
+			conf := cfg.Config{TransposeColumns: testdata.input, Transposers: testdata.transp}
+			err := PrepareTransposerColumns(&conf, &data)
+
+			if testdata.wanterror {
+				assert.Error(t, err)
+			} else {
+				assert.NoError(t, err)
+				assert.EqualValues(t, testdata.exp, len(conf.UseTransposeColumns))
+				assert.EqualValues(t, len(conf.UseTransposeColumns), len(conf.Transposers))
 			}
 		})
 	}
@@ -114,15 +189,15 @@ func TestReduceColumns(t *testing.T) {

 	input := [][]string{{"a", "b", "c"}}

-	for _, tt := range tests {
-		testname := fmt.Sprintf("reduce-columns-by-%+v", tt.columns)
+	for _, testdata := range tests {
+		testname := fmt.Sprintf("reduce-columns-by-%+v", testdata.columns)
+
 		t.Run(testname, func(t *testing.T) {
-			c := cfg.Config{Columns: "x", UseColumns: tt.columns}
+			c := cfg.Config{Columns: "x", UseColumns: testdata.columns}
 			data := Tabdata{entries: input}
 			reduceColumns(c, &data)
-			if !reflect.DeepEqual(data.entries, tt.expect) {
-				t.Errorf("reduceColumns returned invalid data:\ngot: %+v\nexp: %+v", data.entries, tt.expect)
-			}
+
+			assert.EqualValues(t, testdata.expect, data.entries)
 		})
 	}
 }
@@ -133,25 +208,25 @@ func TestNumberizeHeaders(t *testing.T) {
 	}

 	var tests = []struct {
-		expect  []string
-		columns []int
-		nonum   bool
+		expect    []string
+		columns   []int
+		numberize bool
 	}{
-		{[]string{"ONE(1)", "TWO(2)", "THREE(3)"}, []int{1, 2, 3}, false},
-		{[]string{"ONE(1)", "TWO(2)"}, []int{1, 2}, false},
-		{[]string{"ONE", "TWO"}, []int{1, 2}, true},
+		{[]string{"ONE(1)", "TWO(2)", "THREE(3)"}, []int{1, 2, 3}, true},
+		{[]string{"ONE(1)", "TWO(2)"}, []int{1, 2}, true},
+		{[]string{"ONE", "TWO"}, []int{1, 2}, false},
 	}

-	for _, tt := range tests {
-		testname := fmt.Sprintf("numberize-headers-columns-%+v-nonum-%t", tt.columns, tt.nonum)
+	for _, testdata := range tests {
+		testname := fmt.Sprintf("numberize-headers-columns-%+v-nonum-%t",
+			testdata.columns, testdata.numberize)
+
 		t.Run(testname, func(t *testing.T) {
-			c := cfg.Config{Columns: "x", UseColumns: tt.columns, NoNumbering: tt.nonum}
+			conf := cfg.Config{Columns: "x", UseColumns: testdata.columns, Numbering: testdata.numberize}
 			usedata := data
-			numberizeAndReduceHeaders(c, &usedata)
-			if !reflect.DeepEqual(usedata.headers, tt.expect) {
-				t.Errorf("numberizeAndReduceHeaders returned invalid data:\ngot: %+v\nexp: %+v",
-					usedata.headers, tt.expect)
-			}
+			numberizeAndReduceHeaders(conf, &usedata)
+
+			assert.EqualValues(t, testdata.expect, usedata.headers)
 		})
 	}
 }
--- a/lib/io.go
+++ b/lib/io.go
@@ -19,91 +19,98 @@ package lib

 import (
 	"errors"
-	"github.com/tlinden/tablizer/cfg"
+	"fmt"
 	"io"
 	"os"
+
+	"codeberg.org/scip/tablizer/cfg"
 )

-func ProcessFiles(c *cfg.Config, args []string) error {
-	fds, pattern, err := determineIO(c, args)
+const RWRR = 0755
+
+func ProcessFiles(conf *cfg.Config, args []string) error {
+	fd, patterns, err := determineIO(conf, args)

 	if err != nil {
 		return err
 	}

-	if err := c.PreparePattern(pattern); err != nil {
+	if err := conf.PreparePattern(patterns); err != nil {
 		return err
 	}

-	for _, fd := range fds {
-		data, err := Parse(*c, fd)
-		if err != nil {
-			return err
-		}
-
-		err = PrepareColumns(c, &data)
-		if err != nil {
-			return err
-		}
-
-		printData(os.Stdout, *c, &data)
+	data, err := Parse(*conf, fd)
+	if err != nil {
+		return err
 	}

+	if err = ValidateConsistency(&data); err != nil {
+		return err
+	}
+
+	err = PrepareSortColumns(conf, &data)
+	if err != nil {
+		return err
+	}
+
+	err = PrepareColumns(conf, &data)
+	if err != nil {
+		return err
+	}
+
+	if conf.Interactive {
+		newdata, err := tableEditor(conf, &data)
+		if err != nil {
+			return err
+		}
+
+		data = *newdata
+	}
+
+	printData(os.Stdout, *conf, &data)
+
 	return nil
 }

-func determineIO(c *cfg.Config, args []string) ([]io.Reader, string, error) {
-	var pattern string
-	var fds []io.Reader
+func determineIO(conf *cfg.Config, args []string) (io.Reader, []*cfg.Pattern, error) {
+	var filehandle io.Reader
+	var patterns []*cfg.Pattern
 	var haveio bool

-	stat, _ := os.Stdin.Stat()
-	if (stat.Mode() & os.ModeCharDevice) == 0 {
-		// we're reading from STDIN, which takes precedence over file args
-		fds = append(fds, os.Stdin)
-		if len(args) > 0 {
-			// ignore any args > 1
-			pattern = args[0]
-			c.Pattern = args[0] // used for colorization by printData()
-		}
+	switch {
+	case conf.InputFile == "-":
+		filehandle = os.Stdin
 		haveio = true
-	} else {
-		if len(args) > 0 {
-			// threre were args left, take a look
-			if args[0] == "-" {
-				// in traditional unix programs a dash denotes STDIN (forced)
-				fds = append(fds, os.Stdin)
-				haveio = true
-			} else {
-				if _, err := os.Stat(args[0]); err != nil {
-					// first  one is  not a  file, consider  it as  regexp and
-					// shift arg list
-					pattern = args[0]
-					c.Pattern = args[0] // used for colorization by printData()
-					args = args[1:]
-				}
+	case conf.InputFile != "":
+		fd, err := os.OpenFile(conf.InputFile, os.O_RDONLY, RWRR)

-				if len(args) > 0 {
-					// consider any other args as files
-					for _, file := range args {
+		if err != nil {
+			return nil, nil, fmt.Errorf("failed to read input file %s: %w", conf.InputFile, err)
+		}

-						fd, err := os.OpenFile(file, os.O_RDONLY, 0755)
+		filehandle = fd
+		haveio = true
+	}

-						if err != nil {
-							return nil, "", err
-						}
+	if !haveio {
+		stat, _ := os.Stdin.Stat()
+		if (stat.Mode() & os.ModeCharDevice) == 0 {
+			// we're reading from STDIN, which takes precedence over file args
+			filehandle = os.Stdin
+			haveio = true
+		}
+	}

-						fds = append(fds, fd)
-						haveio = true
-					}
-				}
-			}
+	if len(args) > 0 {
+		patterns = make([]*cfg.Pattern, len(args))
+		for i, arg := range args {
+			patterns[i] = &cfg.Pattern{Pattern: arg}
 		}
 	}

 	if !haveio {
-		return nil, "", errors.New("No file specified and nothing to read on stdin!")
+		return nil, nil, errors.New("no file specified and nothing to read on stdin")
 	}

-	return fds, pattern, nil
+	return filehandle, patterns, nil
 }
--- a/lib/pager.go
+++ b/lib/pager.go
@@ -0,0 +1,120 @@
+package lib
+
+// pager setup using bubbletea
+// file shamlelessly copied from:
+// https://github.com/charmbracelet/bubbletea/tree/main/examples/pager
+
+import (
+	"fmt"
+	"os"
+	"strings"
+
+	"github.com/charmbracelet/bubbles/viewport"
+	tea "github.com/charmbracelet/bubbletea"
+	"github.com/charmbracelet/lipgloss"
+)
+
+var (
+	titleStyle = func() lipgloss.Style {
+		b := lipgloss.RoundedBorder()
+		b.Right = "├"
+		return lipgloss.NewStyle().BorderStyle(b).Padding(0, 1)
+	}()
+
+	infoStyle = func() lipgloss.Style {
+		b := lipgloss.RoundedBorder()
+		b.Left = "┤"
+		return titleStyle.BorderStyle(b)
+	}()
+)
+
+type Doc struct {
+	content  string
+	title    string
+	ready    bool
+	viewport viewport.Model
+}
+
+func (m Doc) Init() tea.Cmd {
+	return nil
+}
+
+func (m Doc) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
+	var (
+		cmd  tea.Cmd
+		cmds []tea.Cmd
+	)
+
+	switch msg := msg.(type) {
+	case tea.KeyMsg:
+		if k := msg.String(); k == "ctrl+c" || k == "q" || k == "esc" {
+			return m, tea.Quit
+		}
+
+	case tea.WindowSizeMsg:
+		headerHeight := lipgloss.Height(m.headerView())
+		footerHeight := lipgloss.Height(m.footerView())
+		verticalMarginHeight := headerHeight + footerHeight
+
+		if !m.ready {
+			// Since this program is using the full size of the viewport we
+			// need to wait until we've received the window dimensions before
+			// we can initialize the viewport. The initial dimensions come in
+			// quickly, though asynchronously, which is why we wait for them
+			// here.
+			m.viewport = viewport.New(msg.Width, msg.Height-verticalMarginHeight)
+			m.viewport.YPosition = headerHeight
+			m.viewport.SetContent(m.content)
+			m.ready = true
+		} else {
+			m.viewport.Width = msg.Width
+			m.viewport.Height = msg.Height - verticalMarginHeight
+		}
+	}
+
+	// Handle keyboard and mouse events in the viewport
+	m.viewport, cmd = m.viewport.Update(msg)
+	cmds = append(cmds, cmd)
+
+	return m, tea.Batch(cmds...)
+}
+
+func (m Doc) View() string {
+	if !m.ready {
+		return "\n  Initializing..."
+	}
+	return fmt.Sprintf("%s\n%s\n%s", m.headerView(), m.viewport.View(), m.footerView())
+}
+
+func (m Doc) headerView() string {
+	// title := titleStyle.Render("RPN Help Overview")
+	title := titleStyle.Render(m.title)
+	line := strings.Repeat("─", max(0, m.viewport.Width-lipgloss.Width(title)))
+	return lipgloss.JoinHorizontal(lipgloss.Center, title, line)
+}
+
+func (m Doc) footerView() string {
+	info := infoStyle.Render(fmt.Sprintf("%3.f%%", m.viewport.ScrollPercent()*100))
+	line := strings.Repeat("─", max(0, m.viewport.Width-lipgloss.Width(info)))
+	return lipgloss.JoinHorizontal(lipgloss.Center, line, info)
+}
+
+func max(a, b int) int {
+	if a > b {
+		return a
+	}
+	return b
+}
+
+func Pager(title, message string) {
+	p := tea.NewProgram(
+		Doc{content: message, title: title},
+		tea.WithAltScreen(),       // use the full size of the terminal in its "alternate screen buffer"
+		tea.WithMouseCellMotion(), // turn on mouse support so we can track the mouse wheel
+	)
+
+	if _, err := p.Run(); err != nil {
+		fmt.Println("could not run pager:", err)
+		os.Exit(1)
+	}
+}
--- a/lib/parser.go
+++ b/lib/parser.go
@@ -1,5 +1,5 @@
 /*
-Copyright © 2022 Thomas von Dein
+Copyright © 2022-2025 Thomas von Dein

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -20,65 +20,111 @@ package lib
 import (
 	"bufio"
 	"encoding/csv"
+	"encoding/json"
 	"errors"
 	"fmt"
-	"github.com/alecthomas/repr"
-	"github.com/tlinden/tablizer/cfg"
 	"io"
+	"log"
+	"math"
 	"regexp"
 	"strings"
+
+	"github.com/alecthomas/repr"
+	"codeberg.org/scip/tablizer/cfg"
 )

 /*
-   Parser switch
+Parser switch
 */
-func Parse(c cfg.Config, input io.Reader) (Tabdata, error) {
-	if len(c.Separator) == 1 {
-		return parseCSV(c, input)
+func Parse(conf cfg.Config, input io.Reader) (Tabdata, error) {
+	var data Tabdata
+	var err error
+
+	// first step, parse the data
+	if len(conf.Separator) == 1 {
+		data, err = parseCSV(conf, input)
+	} else if conf.InputJSON {
+		data, err = parseJSON(conf, input)
+	} else {
+		data, err = parseTabular(conf, input)
 	}

-	return parseTabular(c, input)
+	if err != nil {
+		return data, err
+	}
+
+	// 2nd step, apply filters, code or transposers, if any
+	postdata, changed, err := PostProcess(conf, &data)
+	if err != nil {
+		return data, err
+	}
+
+	if changed {
+		return *postdata, nil
+	}
+
+	return data, err
 }

 /*
-   Parse CSV input.
+ * Setup headers,  given headers might  be usable headers or  just the
+ * first row, which we use to  determine how many headers to generate,
+ * if enabled.
+ */
+func SetHeaders(conf cfg.Config, headers []string) []string {
+	if !conf.AutoHeaders && len(conf.CustomHeaders) == 0 {
+		return headers
+	}
+
+	if conf.AutoHeaders {
+		heads := make([]string, len(headers))
+		for idx := range headers {
+			heads[idx] = fmt.Sprintf("%d", idx+1)
+		}
+
+		return heads
+	}
+
+	if len(conf.CustomHeaders) == len(headers) {
+		return conf.CustomHeaders
+	}
+
+	// use as much custom ones we have, generate the remainder
+	heads := make([]string, len(headers))
+
+	for idx := range headers {
+		if idx < len(conf.CustomHeaders) {
+			heads[idx] = conf.CustomHeaders[idx]
+		} else {
+			heads[idx] = fmt.Sprintf("%d", idx+1)
+		}
+	}
+
+	return heads
+}
+
+/*
+Parse CSV input.
 */
-func parseCSV(c cfg.Config, input io.Reader) (Tabdata, error) {
-	var content io.Reader = input
+func parseCSV(conf cfg.Config, input io.Reader) (Tabdata, error) {
 	data := Tabdata{}

-	if len(c.Pattern) > 0 {
-		scanner := bufio.NewScanner(input)
-		lines := []string{}
-		hadFirst := false
-		for scanner.Scan() {
-			line := strings.TrimSpace(scanner.Text())
-			if hadFirst {
-				// don't match 1st line, it's the header
-				if c.PatternR.MatchString(line) == c.InvertMatch {
-					// by default  -v is false, so if a  line does NOT
-					// match the pattern, we will ignore it. However,
-					// if the user specified -v, the matching is inverted,
-					// so we ignore all lines, which DO match.
-					continue
-				}
-			}
-			lines = append(lines, line)
-			hadFirst = true
-		}
-		content = strings.NewReader(strings.Join(lines, "\n"))
+	// apply pattern, if any
+	content, err := FilterByPattern(conf, input)
+	if err != nil {
+		return data, err
 	}

 	csvreader := csv.NewReader(content)
-	csvreader.Comma = rune(c.Separator[0])
+	csvreader.Comma = rune(conf.Separator[0])

 	records, err := csvreader.ReadAll()
 	if err != nil {
-		return data, errors.Unwrap(fmt.Errorf("Could not parse CSV input: %w", err))
+		return data, fmt.Errorf("could not parse CSV input: %w", err)
 	}

 	if len(records) >= 1 {
-		data.headers = records[0]
+		data.headers = SetHeaders(conf, records[0])
 		data.columns = len(records)

 		for _, head := range data.headers {
@@ -89,24 +135,29 @@ func parseCSV(c cfg.Config, input io.Reader) (Tabdata, error) {
 			}
 		}

-		if len(records) > 1 {
-			data.entries = records[1:]
+		if len(records) >= 1 {
+			if conf.AutoHeaders || len(conf.CustomHeaders) > 0 {
+				data.entries = records
+			} else {
+				data.entries = records[1:]
+			}
 		}
+
 	}

 	return data, nil
 }

 /*
-   Parse tabular input.
+Parse tabular input.
 */
-func parseTabular(c cfg.Config, input io.Reader) (Tabdata, error) {
+func parseTabular(conf cfg.Config, input io.Reader) (Tabdata, error) {
 	data := Tabdata{}

 	var scanner *bufio.Scanner

 	hadFirst := false
-	separate := regexp.MustCompile(c.Separator)
+	separate := regexp.MustCompile(conf.Separator)

 	scanner = bufio.NewScanner(input)

@@ -117,16 +168,11 @@ func parseTabular(c cfg.Config, input io.Reader) (Tabdata, error) {
 		if !hadFirst {
 			// header processing
 			data.columns = len(parts)
-			// if Debug {
-			// 	fmt.Println(parts)
-			// }

 			// process all header fields
-			for _, part := range parts {
-				// if Debug {
-				// 	fmt.Printf("Part: <%s>\n", string(line[beg:part[0]]))
-				//}
+			firstrow := make([]string, len(parts))

+			for idx, part := range parts {
 				// register widest header field
 				headerlen := len(part)
 				if headerlen > data.maxwidthHeader {
@@ -134,21 +180,30 @@ func parseTabular(c cfg.Config, input io.Reader) (Tabdata, error) {
 				}

 				// register fields data
-				data.headers = append(data.headers, strings.TrimSpace(part))
+				firstrow[idx] = strings.TrimSpace(part)

 				// done
 				hadFirst = true
 			}
-		} else {
-			// data processing
-			if len(c.Pattern) > 0 {
-				if c.PatternR.MatchString(line) == c.InvertMatch {
-					// by default  -v is false, so if a  line does NOT
-					// match the pattern, we will ignore it. However,
-					// if the user specified -v, the matching is inverted,
-					// so we ignore all lines, which DO match.
+
+			data.headers = SetHeaders(conf, firstrow)
+
+			if conf.AutoHeaders || len(conf.CustomHeaders) > 0 {
+				// we do not use generated headers, consider as row
+				if matchPattern(conf, line) == conf.InvertMatch {
 					continue
 				}
+
+				data.entries = append(data.entries, firstrow)
+			}
+		} else {
+			// data processing
+			if matchPattern(conf, line) == conf.InvertMatch {
+				// by default  -v is false, so if a  line does NOT
+				// match the pattern, we will ignore it. However,
+				// if the user specified -v, the matching is inverted,
+				// so we ignore all lines, which DO match.
+				continue
 			}

 			idx := 0 // we cannot use the header index, because we could exclude columns
@@ -172,12 +227,176 @@ func parseTabular(c cfg.Config, input io.Reader) (Tabdata, error) {
 	}

 	if scanner.Err() != nil {
-		return data, errors.Unwrap(fmt.Errorf("Failed to read from io.Reader: %w", scanner.Err()))
-	}
-
-	if c.Debug {
-		repr.Print(data)
+		return data, fmt.Errorf("failed to read from io.Reader: %w", scanner.Err())
 	}

 	return data, nil
 }
+
+/*
+Parse JSON input.  We only support an array of  maps.
+*/
+func parseRawJSON(conf cfg.Config, input io.Reader) (Tabdata, error) {
+	dec := json.NewDecoder(input)
+	headers := []string{}
+	idxmap := map[string]int{}
+	data := [][]string{}
+	row := []string{}
+	iskey := true
+	haveheaders := false
+	var currentfield string
+	var idx int
+	var isjson bool
+
+	for {
+		t, err := dec.Token()
+		if err == io.EOF {
+			break
+		}
+		if err != nil {
+			log.Fatal(err)
+		}
+
+		switch val := t.(type) {
+		case string:
+			if iskey {
+				if !haveheaders {
+					// consider only the keys of the first item as headers
+					headers = append(headers, val)
+				}
+				currentfield = val
+			} else {
+				if !haveheaders {
+					// the first row uses the order as it comes in
+					row = append(row, val)
+				} else {
+					// use  the pre-determined  order, that  way items
+					// can be in any order as long as they contain all
+					// neccessary  fields. They may also  contain less
+					// fields than the  first item, these will contain
+					// the empty string
+					row[idxmap[currentfield]] = val
+				}
+			}
+
+		case float64:
+			var value string
+
+			// we set precision to 0 if the float is a whole number
+			if val == math.Trunc(val) {
+				value = fmt.Sprintf("%.f", val)
+			} else {
+				value = fmt.Sprintf("%f", val)
+			}
+
+			if !haveheaders {
+				row = append(row, value)
+			} else {
+				row[idxmap[currentfield]] = value
+			}
+
+		case nil:
+			// we ignore here if a value  shall be an int or a string,
+			// because tablizer only works with strings anyway
+			if !haveheaders {
+				row = append(row, "")
+			} else {
+				row[idxmap[currentfield]] = ""
+			}
+
+		case json.Delim:
+			if val.String() == "}" {
+				data = append(data, row)
+				row = make([]string, len(headers))
+				idx++
+
+				if !haveheaders {
+					// remember  the array position of  header fields,
+					// which we use to  assign elements to the correct
+					// row index
+					for i, header := range headers {
+						idxmap[header] = i
+					}
+				}
+
+				haveheaders = true
+			}
+			isjson = true
+		default:
+			fmt.Printf("unknown token: %v type: %T\n", t, t)
+		}
+
+		iskey = !iskey
+	}
+
+	if isjson && (len(headers) == 0 || len(data) == 0) {
+		return Tabdata{}, errors.New("failed to parse JSON, input did not contain array of hashes")
+	}
+
+	return Tabdata{headers: headers, entries: data, columns: len(headers)}, nil
+}
+
+func parseJSON(conf cfg.Config, input io.Reader) (Tabdata, error) {
+	// parse raw json
+	data, err := parseRawJSON(conf, input)
+	if err != nil {
+		return data, err
+	}
+
+	// apply filter, if any
+	filtered := [][]string{}
+	var line string
+
+	for _, row := range data.entries {
+		line = strings.Join(row, " ")
+
+		if matchPattern(conf, line) == conf.InvertMatch {
+			continue
+		}
+
+		filtered = append(filtered, row)
+	}
+
+	if len(filtered) != len(data.entries) {
+		data.entries = filtered
+	}
+
+	return data, nil
+}
+
+func PostProcess(conf cfg.Config, data *Tabdata) (*Tabdata, bool, error) {
+	var modified bool
+
+	// filter by field filters, if any
+	filtereddata, changed, err := FilterByFields(conf, data)
+	if err != nil {
+		return data, false, fmt.Errorf("failed to filter fields: %w", err)
+	}
+
+	if changed {
+		data = filtereddata
+		modified = true
+	}
+
+	// check if transposers are valid and turn into Transposer structs
+	if err := PrepareTransposerColumns(&conf, data); err != nil {
+		return data, false, err
+	}
+
+	// transpose if demanded
+	modifieddata, changed, err := TransposeFields(conf, data)
+	if err != nil {
+		return data, false, fmt.Errorf("failed to transpose fields: %w", err)
+	}
+
+	if changed {
+		data = modifieddata
+		modified = true
+	}
+
+	if conf.Debug {
+		repr.Print(data)
+	}
+
+	return data, modified, nil
+}
--- a/lib/parser_test.go
+++ b/lib/parser_test.go
@@ -1,5 +1,5 @@
 /*
-Copyright © 2022 Thomas von Dein
+Copyright © 2022-2025 Thomas von Dein

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -19,10 +19,12 @@ package lib

 import (
 	"fmt"
-	"github.com/tlinden/tablizer/cfg"
-	"reflect"
+	"io"
 	"strings"
 	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"codeberg.org/scip/tablizer/cfg"
 )

 var input = []struct {
@@ -32,7 +34,7 @@ var input = []struct {
 }{
 	{
 		name:      "tabular-data",
-		separator: cfg.DefaultSeparator,
+		separator: cfg.SeparatorTemplates[":default:"],
 		text: `
 ONE    TWO    THREE  
 asd    igig   cxxxncnc  
@@ -61,71 +63,66 @@ func TestParser(t *testing.T) {
 		},
 	}

-	for _, in := range input {
-		testname := fmt.Sprintf("parse-%s", in.name)
+	for _, testdata := range input {
+		testname := fmt.Sprintf("parse-%s", testdata.name)
 		t.Run(testname, func(t *testing.T) {
-			readFd := strings.NewReader(strings.TrimSpace(in.text))
-			c := cfg.Config{Separator: in.separator}
-			gotdata, err := Parse(c, readFd)
+			readFd := strings.NewReader(strings.TrimSpace(testdata.text))
+			conf := cfg.Config{Separator: testdata.separator}
+			gotdata, err := wrapValidateParser(conf, readFd)

-			if err != nil {
-				t.Errorf("Parser returned error: %s\nData processed so far: %+v", err, gotdata)
-			}
-
-			if !reflect.DeepEqual(data, gotdata) {
-				t.Errorf("Parser returned invalid data\nExp: %+v\nGot: %+v\n",
-					data, gotdata)
-			}
+			assert.NoError(t, err)
+			assert.EqualValues(t, data, gotdata)
 		})
 	}
 }

 func TestParserPatternmatching(t *testing.T) {
 	var tests = []struct {
-		entries [][]string
-		pattern string
-		invert  bool
-		want    bool
+		name      string
+		entries   [][]string
+		patterns  []*cfg.Pattern
+		invert    bool
+		wanterror bool
 	}{
 		{
+			name: "match",
 			entries: [][]string{
 				{"asd", "igig", "cxxxncnc"},
 			},
-			pattern: "ig",
-			invert:  false,
+			patterns: []*cfg.Pattern{{Pattern: "ig"}},
+			invert:   false,
 		},
 		{
+			name: "invert",
 			entries: [][]string{
 				{"19191", "EDD 1", "X"},
 			},
-			pattern: "ig",
-			invert:  true,
+			patterns: []*cfg.Pattern{{Pattern: "ig"}},
+			invert:   true,
 		},
 	}

-	for _, in := range input {
-		for _, tt := range tests {
+	for _, inputdata := range input {
+		for _, testdata := range tests {
 			testname := fmt.Sprintf("parse-%s-with-pattern-%s-inverted-%t",
-				in.name, tt.pattern, tt.invert)
+				inputdata.name, testdata.name, testdata.invert)
 			t.Run(testname, func(t *testing.T) {
-				c := cfg.Config{InvertMatch: tt.invert, Pattern: tt.pattern,
-					Separator: in.separator}
+				conf := cfg.Config{
+					InvertMatch: testdata.invert,
+					Patterns:    testdata.patterns,
+					Separator:   inputdata.separator,
+				}

-				_ = c.PreparePattern(tt.pattern)
+				_ = conf.PreparePattern(testdata.patterns)

-				readFd := strings.NewReader(strings.TrimSpace(in.text))
-				gotdata, err := Parse(c, readFd)
+				readFd := strings.NewReader(strings.TrimSpace(inputdata.text))
+				data, err := wrapValidateParser(conf, readFd)

-				if err != nil {
-					if !tt.want {
-						t.Errorf("Parser returned error: %s\nData processed so far: %+v",
-							err, gotdata)
-					}
+				if testdata.wanterror {
+					assert.Error(t, err)
 				} else {
-					if !reflect.DeepEqual(tt.entries, gotdata.entries) {
-						t.Errorf("Parser returned invalid data (pattern: %s, invert: %t)\nExp: %+v\nGot: %+v\n",
-							tt.pattern, tt.invert, tt.entries, gotdata.entries)
-					}
+					assert.NoError(t, err)
+					assert.EqualValues(t, testdata.entries, data.entries)
 				}
 			})
 		}
@@ -151,15 +148,282 @@ asd    igig
 19191  EDD 1  X`

 	readFd := strings.NewReader(strings.TrimSpace(table))
-	c := cfg.Config{Separator: cfg.DefaultSeparator}
-	gotdata, err := Parse(c, readFd)
+	conf := cfg.Config{Separator: cfg.SeparatorTemplates[":default:"]}
+	gotdata, err := wrapValidateParser(conf, readFd)

-	if err != nil {
-		t.Errorf("Parser returned error: %s\nData processed so far: %+v", err, gotdata)
+	assert.NoError(t, err)
+	assert.EqualValues(t, data, gotdata)
+}
+
+func TestParserJSONInput(t *testing.T) {
+	var tests = []struct {
+		name      string
+		input     string
+		expect    Tabdata
+		wanterror bool // true: expect fail, false: expect success
+	}{
+		{
+			// too deep nesting
+			name:      "invalidjson",
+			wanterror: true,
+			input: `[
+  {
+    "item": {
+       "NAME": "postgres-operator-7f4c7c8485-ntlns",
+       "READY": "1/1",
+       "STATUS": "Running",
+       "RESTARTS": "0",
+       "AGE": "24h"
+    }
+  }
+`,
+			expect: Tabdata{},
+		},
+
+		{
+			// contains nil, int and float values
+			name:      "niljson",
+			wanterror: false,
+			input: `[
+  {
+    "NAME": "postgres-operator-7f4c7c8485-ntlns",
+    "READY": "1/1",
+    "STATUS": "Running",
+    "RESTARTS": 0,
+    "AGE": null,
+    "X": 12,
+    "Y": 34.222
+  }
+]`,
+			expect: Tabdata{
+				columns: 7,
+				headers: []string{"NAME", "READY", "STATUS", "RESTARTS", "AGE", "X", "Y"},
+				entries: [][]string{
+					[]string{
+						"postgres-operator-7f4c7c8485-ntlns",
+						"1/1",
+						"Running",
+						"0",
+						"",
+						"12",
+						"34.222000",
+					},
+				},
+			},
+		},
+
+		{
+			// one field missing + different order
+			// but shall not fail
+			name:      "kgpfail",
+			wanterror: false,
+			input: `[
+  {
+    "NAME": "postgres-operator-7f4c7c8485-ntlns",
+    "READY": "1/1",
+    "STATUS": "Running",
+    "RESTARTS": "0",
+    "AGE": "24h"
+  },
+  {
+    "NAME": "wal-g-exporter-778dcd95f5-wcjzn",
+    "RESTARTS": "0",
+    "READY": "1/1",
+    "AGE": "24h"
+  }
+]`,
+			expect: Tabdata{
+				columns: 5,
+				headers: []string{"NAME", "READY", "STATUS", "RESTARTS", "AGE"},
+				entries: [][]string{
+					[]string{
+						"postgres-operator-7f4c7c8485-ntlns",
+						"1/1",
+						"Running",
+						"0",
+						"24h",
+					},
+					[]string{
+						"wal-g-exporter-778dcd95f5-wcjzn",
+						"1/1",
+						"",
+						"0",
+						"24h",
+					},
+				},
+			},
+		},
+
+		{
+			name:      "kgp",
+			wanterror: false,
+			input: `[
+  {
+    "NAME": "postgres-operator-7f4c7c8485-ntlns",
+    "READY": "1/1",
+    "STATUS": "Running",
+    "RESTARTS": "0",
+    "AGE": "24h"
+  },
+  {
+    "NAME": "wal-g-exporter-778dcd95f5-wcjzn",
+    "STATUS": "Running",
+    "READY": "1/1",
+    "RESTARTS": "0",
+    "AGE": "24h"
+  }
+]`,
+			expect: Tabdata{
+				columns: 5,
+				headers: []string{"NAME", "READY", "STATUS", "RESTARTS", "AGE"},
+				entries: [][]string{
+					[]string{
+						"postgres-operator-7f4c7c8485-ntlns",
+						"1/1",
+						"Running",
+						"0",
+						"24h",
+					},
+					[]string{
+						"wal-g-exporter-778dcd95f5-wcjzn",
+						"1/1",
+						"Running",
+						"0",
+						"24h",
+					},
+				},
+			},
+		},
 	}

-	if !reflect.DeepEqual(data, gotdata) {
-		t.Errorf("Parser returned invalid data, Regex: %s\nExp: %+v\nGot: %+v\n",
-			c.Separator, data, gotdata)
+	for _, testdata := range tests {
+		testname := fmt.Sprintf("parse-json-%s", testdata.name)
+		t.Run(testname, func(t *testing.T) {
+			conf := cfg.Config{InputJSON: true}
+
+			readFd := strings.NewReader(strings.TrimSpace(testdata.input))
+			data, err := wrapValidateParser(conf, readFd)
+
+			if testdata.wanterror {
+				assert.Error(t, err)
+			} else {
+				assert.NoError(t, err)
+				assert.EqualValues(t, testdata.expect, data)
+			}
+		})
 	}
 }
+
+func TestParserSeparators(t *testing.T) {
+	list := []string{"alpha", "beta", "delta"}
+
+	tests := []struct {
+		input string
+		sep   string
+	}{
+		{
+			input: `🎲`,
+			sep:   ":nonprint:",
+		},
+		{
+			input: `|`,
+			sep:   ":pipe:",
+		},
+		{
+			input: `   `,
+			sep:   ":spaces:",
+		},
+		{
+			input: "   \t  ",
+			sep:   ":tab:",
+		},
+		{
+			input: `-`,
+			sep:   ":nonword:",
+		},
+		{
+			input: `//$`,
+			sep:   ":special:",
+		},
+	}
+
+	for _, testdata := range tests {
+		testname := fmt.Sprintf("parse-%s", testdata.sep)
+		t.Run(testname, func(t *testing.T) {
+			header := strings.Join(list, testdata.input)
+			row := header
+			content := header + "\n" + row
+
+			readFd := strings.NewReader(strings.TrimSpace(content))
+			conf := cfg.Config{Separator: testdata.sep}
+			conf.ApplyDefaults()
+
+			gotdata, err := wrapValidateParser(conf, readFd)
+
+			assert.NoError(t, err)
+			assert.EqualValues(t, [][]string{list}, gotdata.entries)
+		})
+	}
+}
+
+func TestParserSetHeaders(t *testing.T) {
+	row := []string{"c", "b", "c", "d", "e"}
+
+	tests := []struct {
+		name   string
+		custom []string
+		expect []string
+		auto   bool
+	}{
+		{
+			name:   "default",
+			expect: row,
+		},
+		{
+			name:   "auto",
+			expect: strings.Split("1 2 3 4 5", " "),
+			auto:   true,
+		},
+		{
+			name:   "custom-complete",
+			custom: strings.Split("A B C D E", " "),
+			expect: strings.Split("A B C D E", " "),
+		},
+		{
+			name:   "custom-too-short",
+			custom: strings.Split("A B", " "),
+			expect: strings.Split("A B 3 4 5", " "),
+		},
+		{
+			name:   "custom-too-long",
+			custom: strings.Split("A B C D E F G", " "),
+			expect: strings.Split("A B C D E", " "),
+		},
+	}
+
+	for _, testdata := range tests {
+		testname := fmt.Sprintf("parse-%s", testdata.name)
+		t.Run(testname, func(t *testing.T) {
+			conf := cfg.Config{
+				AutoHeaders:   testdata.auto,
+				CustomHeaders: testdata.custom,
+			}
+			headers := SetHeaders(conf, row)
+
+			assert.NotNil(t, headers)
+			assert.EqualValues(t, testdata.expect, headers)
+		})
+	}
+}
+
+func wrapValidateParser(conf cfg.Config, input io.Reader) (Tabdata, error) {
+	data, err := Parse(conf, input)
+
+	if err != nil {
+		return data, err
+	}
+
+	err = ValidateConsistency(&data)
+
+	return data, err
+}
--- a/lib/printer.go
+++ b/lib/printer.go
@@ -1,5 +1,5 @@
 /*
-Copyright © 2022 Thomas von Dein
+Copyright © 2022-2025 Thomas von Dein

 This program is free software: you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
@@ -19,147 +19,252 @@ package lib

 import (
 	"encoding/csv"
+	"encoding/json"
 	"fmt"
-	"github.com/gookit/color"
-	"github.com/olekukonko/tablewriter"
-	"github.com/tlinden/tablizer/cfg"
-	"gopkg.in/yaml.v3"
 	"io"
 	"log"
-	"regexp"
 	"strconv"
 	"strings"
+	"text/template"
+
+	"codeberg.org/scip/tablizer/cfg"
+	"github.com/Masterminds/sprig/v3"
+	"github.com/gookit/color"
+	"github.com/olekukonko/tablewriter"
+	"github.com/olekukonko/tablewriter/renderer"
+	"github.com/olekukonko/tablewriter/tw"
+	"gopkg.in/yaml.v3"
 )

-func printData(w io.Writer, c cfg.Config, data *Tabdata) {
-	// some output preparations:
+func printData(writer io.Writer, conf cfg.Config, data *Tabdata) {
+	//  Sort   the  data  first,  before   headers+entries  are  being
+	// reduced. That way the user can specify any valid column to sort
+	// by, independently if it's being used for display or not.
+	sortTable(conf, data)

-	// add numbers to headers and remove this we're not interested in
-	numberizeAndReduceHeaders(c, data)
+	// put one or more columns into clipboard
+	yankColumns(conf, data)
+
+	// add numbers to headers and remove those we're not interested in
+	numberizeAndReduceHeaders(conf, data)

 	// remove unwanted columns, if any
-	reduceColumns(c, data)
+	reduceColumns(conf, data)

-	// sort the data
-	sortTable(c, data)
-
-	switch c.OutputMode {
+	switch conf.OutputMode {
 	case cfg.Extended:
-		printExtendedData(w, c, data)
-	case cfg.Ascii:
-		printAsciiData(w, c, data)
+		printExtendedData(writer, conf, data)
+	case cfg.ASCII:
+		printASCIIData(writer, conf, data)
 	case cfg.Orgtbl:
-		printOrgmodeData(w, c, data)
+		printOrgmodeData(writer, conf, data)
 	case cfg.Markdown:
-		printMarkdownData(w, c, data)
+		printMarkdownData(writer, conf, data)
 	case cfg.Shell:
-		printShellData(w, c, data)
+		printShellData(writer, data)
 	case cfg.Yaml:
-		printYamlData(w, c, data)
+		printYamlData(writer, data)
+	case cfg.Json:
+		printJsonData(writer, data)
 	case cfg.CSV:
-		printCSVData(w, c, data)
+		printCSVData(writer, conf, data)
+	case cfg.Template:
+		printTemplateData(writer, conf, data)
 	default:
-		printAsciiData(w, c, data)
+		printASCIIData(writer, conf, data)
+	}
+}
+
+func output(writer io.Writer, str string) {
+	_, err := fmt.Fprint(writer, str)
+	if err != nil {
+		log.Fatalf("failed to print output: %s", err)
+	}
+}
+
+/*
+Emacs org-mode compatible table (also orgtbl-mode)
+*/
+func printOrgmodeData(writer io.Writer, conf cfg.Config, data *Tabdata) {
+	tableString := &strings.Builder{}
+
+	table := tablewriter.NewTable(tableString,
+		tablewriter.WithRenderer(
+			renderer.NewBlueprint(
+				tw.Rendition{
+					Borders: tw.Border{
+						Left:   tw.On,
+						Right:  tw.On,
+						Top:    tw.On,
+						Bottom: tw.On,
+					},
+					Settings: tw.Settings{
+						Separators: tw.Separators{
+							ShowHeader:     tw.On,
+							ShowFooter:     tw.Off,
+							BetweenRows:    tw.Off,
+							BetweenColumns: 0,
+						},
+					},
+					Symbols: tw.NewSymbols(tw.StyleASCII),
+				})),
+
+		tablewriter.WithConfig(
+			tablewriter.Config{
+				Header: tw.CellConfig{
+					Formatting: tw.CellFormatting{
+						Alignment:  tw.AlignLeft,
+						AutoFormat: tw.Off,
+					},
+				},
+				Row: tw.CellConfig{
+					Formatting: tw.CellFormatting{
+						Alignment: tw.AlignLeft,
+					},
+				},
+			},
+		),
+	)
+
+	if !conf.NoHeaders {
+		table.Header(data.headers)
 	}

-}
-
-func output(w io.Writer, str string) {
-	fmt.Fprint(w, str)
-}
-
-/*
-   Emacs org-mode compatible table (also orgtbl-mode)
-*/
-func printOrgmodeData(w io.Writer, c cfg.Config, data *Tabdata) {
-	tableString := &strings.Builder{}
-	table := tablewriter.NewWriter(tableString)
-
-	table.SetHeader(data.headers)
-
-	for _, row := range data.entries {
-		table.Append(trimRow(row))
+	if err := table.Bulk(data.entries); err != nil {
+		log.Fatalf("Failed to add data to table renderer: %s", err)
 	}

-	table.Render()
-
-	/* fix output for org-mode (orgtbl)
-	   tableWriter output:
-	   +------+------+
-	   | cell | cell |
-	   +------+------+
-
-	   Needed for org-mode compatibility:
-	   |------+------|
-	   | cell | cell |
-	   |------+------|
-	*/
-	leftR := regexp.MustCompile(`(?m)^\\+`)
-	rightR := regexp.MustCompile(`\\+(?m)$`)
-
-	output(w, color.Sprint(
-		colorizeData(c,
-			rightR.ReplaceAllString(
-				leftR.ReplaceAllString(tableString.String(), "|"), "|"))))
-}
-
-/*
-   Markdown table
-*/
-func printMarkdownData(w io.Writer, c cfg.Config, data *Tabdata) {
-	tableString := &strings.Builder{}
-	table := tablewriter.NewWriter(tableString)
-
-	table.SetHeader(data.headers)
-
-	for _, row := range data.entries {
-		table.Append(trimRow(row))
+	if err := table.Render(); err != nil {
+		log.Fatalf("Failed to render table: %s", err)
 	}

-	table.SetBorders(tablewriter.Border{Left: true, Top: false, Right: true, Bottom: false})
-	table.SetCenterSeparator("|")
-
-	table.Render()
-	output(w, color.Sprint(colorizeData(c, tableString.String())))
+	output(writer, color.Sprint(colorizeData(conf, tableString.String())))
 }

 /*
-   Simple ASCII table without any borders etc, just like the input we expect
+Markdown table
 */
-func printAsciiData(w io.Writer, c cfg.Config, data *Tabdata) {
+func printMarkdownData(writer io.Writer, conf cfg.Config, data *Tabdata) {
 	tableString := &strings.Builder{}
-	table := tablewriter.NewWriter(tableString)

-	table.SetHeader(data.headers)
-	table.AppendBulk(data.entries)
+	table := tablewriter.NewTable(tableString,
+		tablewriter.WithRenderer(
+			renderer.NewBlueprint(
+				tw.Rendition{
+					Borders: tw.Border{
+						Left:   tw.On,
+						Right:  tw.On,
+						Top:    tw.Off,
+						Bottom: tw.Off,
+					},
+					Settings: tw.Settings{
+						Separators: tw.Separators{
+							ShowHeader:     tw.On,
+							ShowFooter:     tw.Off,
+							BetweenRows:    tw.Off,
+							BetweenColumns: 0,
+						},
+					},
+					Symbols: tw.NewSymbols(tw.StyleMarkdown),
+				})),

-	// for _, row := range data.entries {
-	// 	table.Append(trimRow(row))
-	// }
+		tablewriter.WithConfig(
+			tablewriter.Config{
+				Header: tw.CellConfig{
+					Formatting: tw.CellFormatting{
+						Alignment:  tw.AlignLeft,
+						AutoFormat: tw.Off,
+					},
+				},
+				Row: tw.CellConfig{
+					Formatting: tw.CellFormatting{
+						Alignment: tw.AlignLeft,
+					},
+				},
+			},
+		),
+	)

-	table.SetAutoWrapText(false)
-	table.SetAutoFormatHeaders(true)
-	table.SetHeaderAlignment(tablewriter.ALIGN_LEFT)
-	table.SetAlignment(tablewriter.ALIGN_LEFT)
-	table.SetCenterSeparator("")
-	table.SetColumnSeparator("")
-	table.SetRowSeparator("")
-	table.SetHeaderLine(false)
-	table.SetBorder(false)
-	table.SetTablePadding("\t") // pad with tabs
-	table.SetNoWhiteSpace(true)
+	if !conf.NoHeaders {
+		table.Header(data.headers)
+	}

-	table.Render()
-	output(w, color.Sprint(colorizeData(c, tableString.String())))
+	if err := table.Bulk(data.entries); err != nil {
+		log.Fatalf("Failed to add data to table renderer: %s", err)
+	}
+
+	if err := table.Render(); err != nil {
+		log.Fatalf("Failed to render table: %s", err)
+	}
+
+	output(writer, color.Sprint(colorizeData(conf, tableString.String())))
 }

 /*
-   We simulate the \x command of psql (the PostgreSQL client)
+Simple ASCII table without any borders etc, just like the input we expect
 */
-func printExtendedData(w io.Writer, c cfg.Config, data *Tabdata) {
+func printASCIIData(writer io.Writer, conf cfg.Config, data *Tabdata) {
+	OFS := "  "
+	if conf.OFS != "" {
+		OFS = conf.OFS
+	}
+
+	tableString := &strings.Builder{}
+
+	styleTSV := tw.NewSymbolCustom("space").WithColumn("\t")
+
+	table := tablewriter.NewTable(tableString,
+		tablewriter.WithRenderer(
+			renderer.NewBlueprint(tw.Rendition{
+				Borders: tw.BorderNone,
+				Symbols: styleTSV,
+				Settings: tw.Settings{
+					Separators: tw.SeparatorsNone,
+					Lines:      tw.LinesNone,
+				},
+			})),
+		tablewriter.WithConfig(tablewriter.Config{
+			Header: tw.CellConfig{
+				Formatting: tw.CellFormatting{
+					AutoFormat: tw.Off,
+				},
+				Padding: tw.CellPadding{Global: tw.Padding{Left: "", Right: OFS}},
+			},
+			Row: tw.CellConfig{
+				Formatting: tw.CellFormatting{
+					AutoWrap:  tw.WrapNone,
+					Alignment: tw.AlignLeft,
+				},
+				Padding: tw.CellPadding{Global: tw.Padding{Right: OFS}},
+			},
+
+			Debug: true,
+		}),
+	)
+
+	if !conf.NoHeaders {
+		table.Header(data.headers)
+	}
+
+	if err := table.Bulk(data.entries); err != nil {
+		log.Fatalf("Failed to add data to table renderer: %s", err)
+	}
+
+	if err := table.Render(); err != nil {
+		log.Fatalf("Failed to render table: %s", err)
+	}
+
+	output(writer, color.Sprint(colorizeData(conf, tableString.String())))
+}
+
+/*
+We simulate the \x command of psql (the PostgreSQL client)
+*/
+func printExtendedData(writer io.Writer, conf cfg.Config, data *Tabdata) {
 	// needed for data output
 	format := fmt.Sprintf("%%%ds: %%s\n", data.maxwidthHeader)
 	out := ""
+
 	if len(data.entries) > 0 {
 		for _, entry := range data.entries {
 			for i, value := range entry {
@@ -170,67 +275,106 @@ func printExtendedData(w io.Writer, c cfg.Config, data *Tabdata) {
 		}
 	}

-	output(w, colorizeData(c, out))
+	output(writer, colorizeData(conf, out))
 }

 /*
-   Shell output, ready to be eval'd. Just like FreeBSD stat(1)
+Shell output, ready to be eval'd. Just like FreeBSD stat(1)
 */
-func printShellData(w io.Writer, c cfg.Config, data *Tabdata) {
+func printShellData(writer io.Writer, data *Tabdata) {
 	out := ""
+
 	if len(data.entries) > 0 {
 		for _, entry := range data.entries {
 			shentries := []string{}
-			for i, value := range entry {
+
+			for idx, value := range entry {
 				shentries = append(shentries, fmt.Sprintf("%s=\"%s\"",
-					data.headers[i], value))
+					data.headers[idx], value))
 			}
-			out += fmt.Sprint(strings.Join(shentries, " ")) + "\n"
+
+			out += strings.Join(shentries, " ") + "\n"
 		}
 	}

 	// no colorization here
-	output(w, out)
+	output(writer, out)
 }

-func printYamlData(w io.Writer, c cfg.Config, data *Tabdata) {
-	type D struct {
+func printJsonData(writer io.Writer, data *Tabdata) {
+	objlist := make([]map[string]any, len(data.entries))
+
+	if len(data.entries) > 0 {
+		for i, entry := range data.entries {
+			obj := make(map[string]any, len(entry))
+
+			for idx, value := range entry {
+				num, err := strconv.Atoi(value)
+				if err == nil {
+					obj[data.headers[idx]] = num
+				} else {
+					obj[data.headers[idx]] = value
+				}
+			}
+
+			objlist[i] = obj
+		}
+	}
+
+	jsonstr, err := json.MarshalIndent(&objlist, "", "  ")
+
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	output(writer, string(jsonstr))
+}
+
+func printYamlData(writer io.Writer, data *Tabdata) {
+	type Data struct {
 		Entries []map[string]interface{} `yaml:"entries"`
 	}

-	d := D{}
+	yamlout := Data{}

 	for _, entry := range data.entries {
-		ml := map[string]interface{}{}
+		yamldata := map[string]interface{}{}

-		for i, entry := range entry {
+		for idx, entry := range entry {
 			style := yaml.TaggedStyle
+
 			_, err := strconv.Atoi(entry)
 			if err != nil {
 				style = yaml.DoubleQuotedStyle
 			}

-			ml[strings.ToLower(data.headers[i])] =
+			yamldata[strings.ToLower(data.headers[idx])] =
 				&yaml.Node{
 					Kind:  yaml.ScalarNode,
 					Style: style,
 					Value: entry}
 		}

-		d.Entries = append(d.Entries, ml)
+		yamlout.Entries = append(yamlout.Entries, yamldata)
 	}

-	yamlstr, err := yaml.Marshal(&d)
+	yamlstr, err := yaml.Marshal(&yamlout)

 	if err != nil {
 		log.Fatal(err)
 	}

-	output(w, string(yamlstr))
+	output(writer, string(yamlstr))
 }

-func printCSVData(w io.Writer, c cfg.Config, data *Tabdata) {
-	csvout := csv.NewWriter(w)
+func printCSVData(writer io.Writer, conf cfg.Config, data *Tabdata) {
+	OFS := ","
+	if conf.OFS != "" {
+		OFS = conf.OFS
+	}
+
+	csvout := csv.NewWriter(writer)
+	csvout.Comma = []rune(OFS)[0]

 	if err := csvout.Write(data.headers); err != nil {
 		log.Fatalln("error writing record to csv:", err)
@@ -248,3 +392,25 @@ func printCSVData(w io.Writer, c cfg.Config, data *Tabdata) {
 		log.Fatal(err)
 	}
 }
+
+func printTemplateData(writer io.Writer, conf cfg.Config, data *Tabdata) {
+	tmpl, err := template.New("printer").Funcs(sprig.TxtFuncMap()).Parse(conf.Template)
+	if err != nil {
+		log.Fatalf("failed to parse template: %s", err)
+	}
+
+	buf := strings.Builder{}
+
+	for line, dict := range data.ToMap() {
+		err = tmpl.Execute(&buf, dict)
+		if err != nil {
+			log.Fatalf("failed to execute template in line %d: %s", line, err)
+		}
+
+		buf.WriteString("\n")
+	}
+
+	if _, err := fmt.Fprintln(writer, buf.String()); err != nil {
+		log.Fatalf("failed to print output: %s", err)
+	}
+}
--- a/lib/printer_test.go
+++ b/lib/printer_test.go
@@ -20,10 +20,11 @@ package lib
 import (
 	"bytes"
 	"fmt"
-	//"github.com/alecthomas/repr"
-	"github.com/tlinden/tablizer/cfg"
 	"strings"
 	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"codeberg.org/scip/tablizer/cfg"
 )

 func newData() Tabdata {
@@ -63,9 +64,9 @@ var tests = []struct {
 	name string // so we can identify which one fails, can be the same
 	// for multiple tests, because flags will be appended to the name
 	sortby    string // empty == default
-	column    int    // sort by this column, 0 == default first or NO Sort
+	column    int    // sort by this column (numbers start by 1)
 	desc      bool   // sort in descending order, default == ascending
-	nonum     bool   // hide numbering
+	numberize bool   // add header numbering
 	mode      int    // shell, orgtbl, etc. empty == default: ascii
 	usecol    []int  // columns to display, empty == display all
 	usecolstr string // for testname, must match usecol
@@ -73,17 +74,19 @@ var tests = []struct {
 }{
 	// --------------------- Default settings mode tests ``
 	{
-		mode: cfg.Ascii,
-		name: "default",
+		mode:      cfg.ASCII,
+		numberize: true,
+		name:      "default",
 		expect: `
-NAME(1)	DURATION(2)	COUNT(3)	WHEN(4)                    
-beta   	1d10h5m1s  	33      	3/1/2014                  	
-alpha  	4h35m      	170     	2013-Feb-03               	
-ceta   	33d12h     	9       	06/Jan/2008 15:04:05 -0700`,
+NAME(1) DURATION(2) COUNT(3) WHEN(4)                    
+beta    1d10h5m1s   33       3/1/2014                   
+alpha   4h35m       170      2013-Feb-03                
+ceta    33d12h      9        06/Jan/2008 15:04:05 -0700`,
 	},
 	{
-		mode: cfg.CSV,
-		name: "csv",
+		mode:      cfg.CSV,
+		numberize: false,
+		name:      "csv",
 		expect: `
 NAME,DURATION,COUNT,WHEN
 beta,1d10h5m1s,33,3/1/2014
@@ -91,40 +94,67 @@ alpha,4h35m,170,2013-Feb-03
 ceta,33d12h,9,06/Jan/2008 15:04:05 -0700`,
 	},
 	{
-		name: "default",
-		mode: cfg.Orgtbl,
+		name:      "orgtbl",
+		numberize: true,
+		mode:      cfg.Orgtbl,
 		expect: `
 +---------+-------------+----------+----------------------------+
-| NAME(1) | DURATION(2) | COUNT(3) |          WHEN(4)           |
+| NAME(1) | DURATION(2) | COUNT(3) | WHEN(4)                    |
 +---------+-------------+----------+----------------------------+
-| beta    | 1d10h5m1s   |       33 | 3/1/2014                   |
-| alpha   | 4h35m       |      170 | 2013-Feb-03                |
-| ceta    | 33d12h      |        9 | 06/Jan/2008 15:04:05 -0700 |
+| beta    | 1d10h5m1s   | 33       | 3/1/2014                   |
+| alpha   | 4h35m       | 170      | 2013-Feb-03                |
+| ceta    | 33d12h      | 9        | 06/Jan/2008 15:04:05 -0700 |
 +---------+-------------+----------+----------------------------+`,
 	},
 	{
-		name: "default",
-		mode: cfg.Markdown,
+		name:      "markdown",
+		mode:      cfg.Markdown,
+		numberize: true,
 		expect: `
-| NAME(1) | DURATION(2) | COUNT(3) |          WHEN(4)           |
+| NAME(1) | DURATION(2) | COUNT(3) | WHEN(4)                    |
 |---------|-------------|----------|----------------------------|
-| beta    | 1d10h5m1s   |       33 | 3/1/2014                   |
-| alpha   | 4h35m       |      170 | 2013-Feb-03                |
-| ceta    | 33d12h      |        9 | 06/Jan/2008 15:04:05 -0700 |`,
+| beta    | 1d10h5m1s   | 33       | 3/1/2014                   |
+| alpha   | 4h35m       | 170      | 2013-Feb-03                |
+| ceta    | 33d12h      | 9        | 06/Jan/2008 15:04:05 -0700 |`,
 	},
 	{
-		name:  "default",
-		mode:  cfg.Shell,
-		nonum: true,
+		name:      "shell",
+		mode:      cfg.Shell,
+		numberize: false,
 		expect: `
 NAME="beta" DURATION="1d10h5m1s" COUNT="33" WHEN="3/1/2014"
 NAME="alpha" DURATION="4h35m" COUNT="170" WHEN="2013-Feb-03"
 NAME="ceta" DURATION="33d12h" COUNT="9" WHEN="06/Jan/2008 15:04:05 -0700"`,
 	},
 	{
-		name:  "default",
-		mode:  cfg.Yaml,
-		nonum: true,
+		name:      "json",
+		mode:      cfg.Json,
+		numberize: false,
+		expect: `[
+  {
+    "COUNT": 33,
+    "DURATION": "1d10h5m1s",
+    "NAME": "beta",
+    "WHEN": "3/1/2014"
+  },
+  {
+    "COUNT": 170,
+    "DURATION": "4h35m",
+    "NAME": "alpha",
+    "WHEN": "2013-Feb-03"
+  },
+  {
+    "COUNT": 9,
+    "DURATION": "33d12h",
+    "NAME": "ceta",
+    "WHEN": "06/Jan/2008 15:04:05 -0700"
+  }
+]`,
+	},
+	{
+		name:      "yaml",
+		mode:      cfg.Yaml,
+		numberize: false,
 		expect: `
 entries:
    - count: 33
@@ -141,8 +171,9 @@ entries:
      when: "06/Jan/2008 15:04:05 -0700"`,
 	},
 	{
-		name: "default",
-		mode: cfg.Extended,
+		name:      "extended",
+		mode:      cfg.Extended,
+		numberize: true,
 		expect: `
    NAME(1): beta
 DURATION(2): 1d10h5m1s
@@ -162,132 +193,148 @@ DURATION(2): 33d12h

 	//------------------------ SORT TESTS
 	{
-		name:   "sortbycolumn",
-		column: 3,
-		sortby: "numeric",
-		desc:   false,
+		name:      "sortbycolumn3",
+		column:    3,
+		sortby:    "numeric",
+		numberize: true,
+		desc:      false,
 		expect: `
-NAME(1)	DURATION(2)	COUNT(3)	WHEN(4)                    
-ceta   	33d12h     	9       	06/Jan/2008 15:04:05 -0700	
-beta   	1d10h5m1s  	33      	3/1/2014                  	
-alpha  	4h35m      	170     	2013-Feb-03`,
+NAME(1) DURATION(2) COUNT(3) WHEN(4)                    
+ceta    33d12h      9        06/Jan/2008 15:04:05 -0700 
+beta    1d10h5m1s   33       3/1/2014                   
+alpha   4h35m       170      2013-Feb-03`,
 	},
 	{
-		name:   "sortbycolumn",
-		column: 4,
-		sortby: "time",
-		desc:   false,
+		name:      "sortbycolumn4",
+		column:    4,
+		sortby:    "time",
+		desc:      false,
+		numberize: true,
 		expect: `
-NAME(1)	DURATION(2)	COUNT(3)	WHEN(4)                    
-ceta   	33d12h     	9       	06/Jan/2008 15:04:05 -0700	
-alpha  	4h35m      	170     	2013-Feb-03               	
-beta   	1d10h5m1s  	33      	3/1/2014`,
+NAME(1) DURATION(2) COUNT(3) WHEN(4)                    
+ceta    33d12h      9        06/Jan/2008 15:04:05 -0700 
+alpha   4h35m       170      2013-Feb-03                
+beta    1d10h5m1s   33       3/1/2014`,
 	},
 	{
-		name:   "sortbycolumn",
-		column: 2,
-		sortby: "duration",
-		desc:   false,
+		name:      "sortbycolumn2",
+		column:    2,
+		sortby:    "duration",
+		numberize: true,
+		desc:      false,
 		expect: `
-NAME(1)	DURATION(2)	COUNT(3)	WHEN(4)                    
-alpha  	4h35m      	170     	2013-Feb-03               	
-beta   	1d10h5m1s  	33      	3/1/2014                  	
-ceta   	33d12h     	9       	06/Jan/2008 15:04:05 -0700`,
+NAME(1) DURATION(2) COUNT(3) WHEN(4)                    
+alpha   4h35m       170      2013-Feb-03                
+beta    1d10h5m1s   33       3/1/2014                   
+ceta    33d12h      9        06/Jan/2008 15:04:05 -0700`,
 	},

 	//  -----------------------  UseColumns Tests
 	{
 		name:      "usecolumns",
 		usecol:    []int{1, 4},
+		numberize: true,
 		usecolstr: "1,4",
 		expect: `
-NAME(1)	WHEN(4)                    
-beta   	3/1/2014                  	
-alpha  	2013-Feb-03               	
-ceta   	06/Jan/2008 15:04:05 -0700`,
+NAME(1) WHEN(4)                    
+beta    3/1/2014                   
+alpha   2013-Feb-03                
+ceta    06/Jan/2008 15:04:05 -0700`,
 	},
 	{
-		name:      "usecolumns",
+		name:      "usecolumns2",
 		usecol:    []int{2},
+		numberize: true,
 		usecolstr: "2",
 		expect: `
 DURATION(2) 
-1d10h5m1s  	
-4h35m      	
+1d10h5m1s   
+4h35m       
 33d12h`,
 	},
 	{
-		name:      "usecolumns",
+		name:      "usecolumns3",
 		usecol:    []int{3},
+		numberize: true,
 		usecolstr: "3",
 		expect: `
 COUNT(3) 
-33      	
-170     	
+33       
+170      
 9`,
 	},
 	{
-		name:      "usecolumns",
+		name:      "usecolumns4",
 		column:    0,
 		usecol:    []int{1, 3},
+		numberize: true,
 		usecolstr: "1,3",
 		expect: `
-NAME(1)	COUNT(3) 
-beta   	33      	
-alpha  	170     	
-ceta   	9`,
+NAME(1) COUNT(3) 
+beta    33       
+alpha   170      
+ceta    9`,
 	},
 	{
 		name:      "usecolumns",
 		usecol:    []int{2, 4},
+		numberize: true,
 		usecolstr: "2,4",
 		expect: `
-DURATION(2)	WHEN(4)                    
-1d10h5m1s  	3/1/2014                  	
-4h35m      	2013-Feb-03               	
-33d12h     	06/Jan/2008 15:04:05 -0700`,
+DURATION(2) WHEN(4)                    
+1d10h5m1s   3/1/2014                   
+4h35m       2013-Feb-03                
+33d12h      06/Jan/2008 15:04:05 -0700`,
 	},
 }

 func TestPrinter(t *testing.T) {
-	for _, tt := range tests {
-		testname := fmt.Sprintf("print-sortcol-%d-desc-%t-sortby-%s-mode-%d-usecolumns-%s",
-			tt.column, tt.desc, tt.sortby, tt.mode, tt.usecolstr)
+	for _, testdata := range tests {
+		testname := fmt.Sprintf("print-%s-%d-desc-%t-sortby-%s-mode-%d-usecolumns-%s-numberize-%t",
+			testdata.name, testdata.column, testdata.desc, testdata.sortby,
+			testdata.mode, testdata.usecolstr, testdata.numberize)
+
 		t.Run(testname, func(t *testing.T) {
 			// replaces os.Stdout, but we ignore it
-			var w bytes.Buffer
+			var writer bytes.Buffer

 			// cmd flags
-			c := cfg.Config{
-				SortByColumn:   tt.column,
-				SortDescending: tt.desc,
-				SortMode:       tt.sortby,
-				OutputMode:     tt.mode,
-				NoNumbering:    tt.nonum,
-				UseColumns:     tt.usecol,
+			conf := cfg.Config{
+				SortDescending: testdata.desc,
+				SortMode:       testdata.sortby,
+				OutputMode:     testdata.mode,
+				Numbering:      testdata.numberize,
+				UseColumns:     testdata.usecol,
 				NoColor:        true,
+				OFS:            " ",
 			}

-			c.ApplyDefaults()
+			if conf.OutputMode == cfg.CSV {
+				conf.OFS = ","
+			}
+
+			if testdata.column > 0 {
+				conf.UseSortByColumn = []int{testdata.column}
+			}
+
+			conf.Separator = cfg.SeparatorTemplates[":default:"]
+			conf.ApplyDefaults()

 			// the test checks the len!
-			if len(tt.usecol) > 0 {
-				c.Columns = "yes"
+			if len(testdata.usecol) > 0 {
+				conf.Columns = "yes"
 			} else {
-				c.Columns = ""
+				conf.Columns = ""
 			}

-			testdata := newData()
-			exp := strings.TrimSpace(tt.expect)
+			data := newData()
+			exp := strings.TrimSpace(testdata.expect)

-			printData(&w, c, &testdata)
+			printData(&writer, conf, &data)

-			got := strings.TrimSpace(w.String())
+			got := strings.TrimSpace(writer.String())

-			if got != exp {
-				t.Errorf("not rendered correctly:\n+++ got:\n%s\n+++ want:\n%s",
-					got, exp)
-			}
+			assert.EqualValues(t, exp, got)
 		})
 	}
 }
--- a/lib/sort.go
+++ b/lib/sort.go
@@ -18,84 +18,102 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
 package lib

 import (
-	"github.com/araddon/dateparse"
-	"github.com/tlinden/tablizer/cfg"
+	"cmp"
 	"regexp"
 	"sort"
 	"strconv"
+
+	"github.com/araddon/dateparse"
+	"codeberg.org/scip/tablizer/cfg"
 )

-func sortTable(c cfg.Config, data *Tabdata) {
-	if c.SortByColumn <= 0 {
+func sortTable(conf cfg.Config, data *Tabdata) {
+	if len(conf.UseSortByColumn) == 0 {
 		// no sorting wanted
 		return
 	}

-	// slightly modified here to match internal array indicies
-	col := c.SortByColumn
-
-	col-- // ui starts counting by 1, but use 0 internally
-
 	// sanity checks
 	if len(data.entries) == 0 {
 		return
 	}

-	if col >= len(data.headers) {
-		// fall back to default column
-		col = 0
-	}
-
 	// actual sorting
 	sort.SliceStable(data.entries, func(i, j int) bool {
-		return compare(&c, data.entries[i][col], data.entries[j][col])
+		// holds the result of a sort of one column
+		comparators := []int{}
+
+		// iterate over all columns to be sorted, conf.SortMode must be identical!
+		for _, column := range conf.UseSortByColumn {
+			comparators = append(comparators, compare(&conf, data.entries[i][column-1], data.entries[j][column-1]))
+		}
+
+		// return the combined result
+		res := cmp.Or(comparators...)
+
+		switch res {
+		case 0:
+			return true
+		default:
+			return false
+		}
+
 	})
 }

 // config is not modified here, but it would be inefficient to copy it every loop
-func compare(c *cfg.Config, a string, b string) bool {
+func compare(conf *cfg.Config, left string, right string) int {
 	var comp bool

-	switch c.SortMode {
+	switch conf.SortMode {
 	case "numeric":
-		left, err := strconv.Atoi(a)
+		left, err := strconv.Atoi(left)
 		if err != nil {
 			left = 0
 		}
-		right, err := strconv.Atoi(b)
+
+		right, err := strconv.Atoi(right)
 		if err != nil {
 			right = 0
 		}
+
 		comp = left < right
 	case "duration":
-		left := duration2int(a)
-		right := duration2int(b)
+		left := duration2int(left)
+		right := duration2int(right)
+
 		comp = left < right
 	case "time":
-		left, _ := dateparse.ParseAny(a)
-		right, _ := dateparse.ParseAny(b)
+		left, _ := dateparse.ParseAny(left)
+		right, _ := dateparse.ParseAny(right)
+
 		comp = left.Unix() < right.Unix()
 	default:
-		comp = a < b
+		comp = left < right
 	}

-	if c.SortDescending {
+	if conf.SortDescending {
 		comp = !comp
 	}

-	return comp
+	switch comp {
+	case true:
+		return 0
+	default:
+		return 1
+	}
 }

 /*
-   We could use time.ParseDuration(), but this doesn't support days.
+We could use time.ParseDuration(), but this doesn't support days.

-   We  could also  use github.com/xhit/go-str2duration/v2,  which does
-   the job,  but it's  just another dependency,  just for  this little
-   gem. And  we don't need a  time.Time value. And int  is good enough
-   for duration comparision.
+We  could also  use github.com/xhit/go-str2duration/v2,  which does
+the job,  but it's  just another dependency,  just for  this little
+gem. And  we don't need a  time.Time value. And int  is good enough
+for duration comparison.

-   Convert a  durartion into  an integer.  Valid  time units  are "s",
-   "m", "h" and "d".
+Convert a  duration into  an integer.  Valid  time units  are "s",
+"m", "h" and "d".
 */
 func duration2int(duration string) int {
 	re := regexp.MustCompile(`(\d+)([dhms])`)
@@ -103,16 +121,17 @@ func duration2int(duration string) int {

 	for _, match := range re.FindAllStringSubmatch(duration, -1) {
 		if len(match) == 3 {
-			v, _ := strconv.Atoi(match[1])
+			durationvalue, _ := strconv.Atoi(match[1])
+
 			switch match[2][0] {
 			case 'd':
-				seconds += v * 86400
+				seconds += durationvalue * 86400
 			case 'h':
-				seconds += v * 3600
+				seconds += durationvalue * 3600
 			case 'm':
-				seconds += v * 60
+				seconds += durationvalue * 60
 			case 's':
-				seconds += v
+				seconds += durationvalue
 			}
 		}
 	}
--- a/lib/sort_test.go
+++ b/lib/sort_test.go
@@ -19,8 +19,10 @@ package lib

 import (
 	"fmt"
-	"github.com/tlinden/tablizer/cfg"
 	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"codeberg.org/scip/tablizer/cfg"
 )

 func TestDuration2Seconds(t *testing.T) {
@@ -36,13 +38,11 @@ func TestDuration2Seconds(t *testing.T) {
 		{"19t77X what?4s", 4},
 	}

-	for _, tt := range tests {
-		testname := fmt.Sprintf("duration-%s", tt.dur)
+	for _, testdata := range tests {
+		testname := fmt.Sprintf("duration-%s", testdata.dur)
 		t.Run(testname, func(t *testing.T) {
-			seconds := duration2int(tt.dur)
-			if seconds != tt.expect {
-				t.Errorf("got %d, want %d", seconds, tt.expect)
-			}
+			seconds := duration2int(testdata.dur)
+			assert.EqualValues(t, testdata.expect, seconds)
 		})
 	}
 }
@@ -52,28 +52,28 @@ func TestCompare(t *testing.T) {
 		mode string
 		a    string
 		b    string
-		want bool
+		want int
 		desc bool
 	}{
 		// ascending
-		{"numeric", "10", "20", true, false},
-		{"duration", "2d4h5m", "45m", false, false},
-		{"time", "12/24/2022", "1/1/1970", false, false},
+		{"numeric", "10", "20", 0, false},
+		{"duration", "2d4h5m", "45m", 1, false},
+		{"time", "12/24/2022", "1/1/1970", 1, false},

 		// descending
-		{"numeric", "10", "20", false, true},
-		{"duration", "2d4h5m", "45m", true, true},
-		{"time", "12/24/2022", "1/1/1970", true, true},
+		{"numeric", "10", "20", 1, true},
+		{"duration", "2d4h5m", "45m", 0, true},
+		{"time", "12/24/2022", "1/1/1970", 0, true},
 	}

-	for _, tt := range tests {
-		testname := fmt.Sprintf("compare-mode-%s-a-%s-b-%s-desc-%t", tt.mode, tt.a, tt.b, tt.desc)
+	for _, testdata := range tests {
+		testname := fmt.Sprintf("compare-mode-%s-a-%s-b-%s-desc-%t",
+			testdata.mode, testdata.a, testdata.b, testdata.desc)
+
 		t.Run(testname, func(t *testing.T) {
-			c := cfg.Config{SortMode: tt.mode, SortDescending: tt.desc}
-			got := compare(&c, tt.a, tt.b)
-			if got != tt.want {
-				t.Errorf("got %t, want %t", got, tt.want)
-			}
+			c := cfg.Config{SortMode: testdata.mode, SortDescending: testdata.desc}
+			got := compare(&c, testdata.a, testdata.b)
+			assert.EqualValues(t, testdata.want, got)
 		})
 	}
 }
--- a/lib/tabdata.go
+++ b/lib/tabdata.go
@@ -0,0 +1,79 @@
+/*
+Copyright © 2022-2025 Thomas von Dein
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package lib
+
+import (
+	"strconv"
+	"strings"
+)
+
+// contains a whole parsed table
+type Tabdata struct {
+	maxwidthHeader int      // longest header
+	columns        int      // count
+	headers        []string // [ "ID", "NAME", ...]
+	entries        [][]string
+}
+
+func (data *Tabdata) CloneEmpty() Tabdata {
+	newdata := Tabdata{
+		maxwidthHeader: data.maxwidthHeader,
+		columns:        data.columns,
+		headers:        data.headers,
+	}
+
+	return newdata
+}
+
+// convert our internal data to a list of maps
+func (data *Tabdata) ToMap() []map[string]any {
+	dictlist := make([]map[string]any, len(data.entries))
+	headers := make([]string, len(data.headers))
+
+	for idx, header := range data.headers {
+		headers[idx] = strings.ToLower(header)
+	}
+
+	for line, row := range data.entries {
+		dict := make(map[string]any, len(data.headers))
+
+		for col, cell := range row {
+			n, ok := strconv.Atoi(cell)
+			if ok == nil {
+				dict[headers[col]] = n
+				continue
+			}
+
+			if strings.ToLower(cell) == "true" {
+				dict[headers[col]] = true
+				continue
+			}
+
+			if strings.ToLower(cell) == "false" {
+				dict[headers[col]] = false
+				continue
+			}
+
+			dict[headers[col]] = cell
+		}
+
+		dictlist[line] = dict
+	}
+
+	return dictlist
+}
--- a/lib/tableeditor.go
+++ b/lib/tableeditor.go
@@ -0,0 +1,524 @@
+/*
+Copyright © 2025 Thomas von Dein
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package lib
+
+import (
+	"fmt"
+	"os"
+	"strings"
+
+	tea "github.com/charmbracelet/bubbletea"
+	"github.com/charmbracelet/lipgloss"
+	"github.com/evertras/bubble-table/table"
+	"github.com/mattn/go-isatty"
+	"codeberg.org/scip/tablizer/cfg"
+)
+
+// The context exists outside of the bubble loop, and is being used as
+// pointer reciever. That way we can use it as our primary storage
+// container.
+type Context struct {
+	selectedColumn int
+	showHelp       bool
+	descending     bool
+	data           *Tabdata
+
+	// Window dimensions
+	totalWidth  int
+	totalHeight int
+
+	// Table dimensions
+	horizontalMargin int
+	verticalMargin   int
+}
+
+// Execute tablizer sort function, feed it with fresh config, we do
+// NOT use the existing runtime config, because sorting is
+// configurable in the UI separately.
+func (ctx *Context) Sort(mode string) {
+	conf := cfg.Config{
+		SortMode:        mode,
+		SortDescending:  ctx.descending,
+		UseSortByColumn: []int{ctx.selectedColumn + 1},
+	}
+
+	ctx.descending = !ctx.descending
+
+	sortTable(conf, ctx.data)
+}
+
+// The actual table model, holds the context pointer, a copy of the
+// pre-processed data and some flags
+type FilterTable struct {
+	Table table.Model
+
+	Rows int
+
+	quitting  bool
+	unchanged bool
+
+	maxColumns int
+	headerIdx  map[string]int
+
+	ctx *Context
+
+	columns []table.Column
+}
+
+type HelpLine []string
+type HelpColumn []HelpLine
+
+const (
+	// header+footer
+	ExtraRows = 5
+
+	HelpFooter = "?:help | "
+)
+
+var (
+	// we use our own custom border style
+	customBorder = table.Border{
+		Top:    "─",
+		Left:   "│",
+		Right:  "│",
+		Bottom: "─",
+
+		TopRight:    "╮",
+		TopLeft:     "╭",
+		BottomRight: "╯",
+		BottomLeft:  "╰",
+
+		TopJunction:    "┬",
+		LeftJunction:   "├",
+		RightJunction:  "┤",
+		BottomJunction: "┴",
+		InnerJunction:  "┼",
+
+		InnerDivider: "│",
+	}
+
+	// Cells in selected columns will be highlighted
+	StyleSelected = lipgloss.NewStyle().
+			Background(lipgloss.Color("#696969")).
+			Foreground(lipgloss.Color("#ffffff")).
+			Align(lipgloss.Left)
+
+	StyleHeader = lipgloss.NewStyle().
+			Foreground(lipgloss.Color("#ff4500")).
+			Align(lipgloss.Left).Bold(true)
+
+	// help buffer styles
+	StyleKey  = lipgloss.NewStyle().Bold(true)
+	StyleHelp = lipgloss.NewStyle().Foreground(lipgloss.Color("#ff4500"))
+
+	// the default style
+	NoStyle = lipgloss.NewStyle().Align(lipgloss.Left)
+
+	HelpData = []HelpColumn{
+		{
+			HelpLine{"up", "navigate up"},
+			HelpLine{"down", "navigate down"},
+			HelpLine{"tab", "navigate columns"},
+		},
+		{
+			HelpLine{"s", "sort alpha-numerically"},
+			HelpLine{"n", "sort numerically"},
+			HelpLine{"t", "sort by time"},
+			HelpLine{"d", "sort by duration"},
+		},
+		{
+			HelpLine{"spc", "[de]select a row"},
+			HelpLine{"a", "[de]select all visible rows"},
+			HelpLine{"f", "enter fuzzy filter"},
+			HelpLine{"esc", "finish filter input"},
+		},
+		{
+			HelpLine{"?", "show help buffer"},
+			HelpLine{"q", "commit and quit"},
+			HelpLine{"c-c", "discard and quit"},
+		},
+	}
+
+	// rendered from Help above
+	Help = ""
+
+	// number of lines taken by help below, adjust accordingly!
+	HelpRows = 0
+)
+
+// generate  a  lipgloss  styled  help buffer  consisting  of  various
+// columns
+func generateHelp() {
+	help := strings.Builder{}
+	helpcols := []string{}
+	maxrows := 0
+
+	for _, col := range HelpData {
+		help.Reset()
+
+		// determine max key width to avoid excess spaces between keys and help
+		keylen := 0
+		for _, line := range col {
+			if len(line[0]) > keylen {
+				keylen = len(line[0])
+			}
+		}
+
+		keylenstr := fmt.Sprintf("%d", keylen)
+
+		for _, line := range col {
+			// 0: key, 1: help text
+			help.WriteString(StyleKey.Render(fmt.Sprintf("%-"+keylenstr+"s", line[0])))
+			help.WriteString("  " + StyleHelp.Render(line[1]) + "   \n")
+		}
+
+		helpcols = append(helpcols, help.String())
+
+		if len(col) > maxrows {
+			maxrows = len(col)
+		}
+	}
+
+	HelpRows = maxrows + 1
+	Help = "\n" + lipgloss.JoinHorizontal(lipgloss.Top, helpcols...)
+}
+
+// initializes the table model
+func NewModel(data *Tabdata, ctx *Context) FilterTable {
+	columns := make([]table.Column, len(data.headers))
+	lengths := make([]int, len(data.headers))
+	hidx := make(map[string]int, len(data.headers))
+
+	// give columns at least the header width
+	for idx, header := range data.headers {
+		lengths[idx] = len(header)
+		hidx[strings.ToLower(header)] = idx
+	}
+
+	// determine max width per column
+	for _, entry := range data.entries {
+		for i, cell := range entry {
+			if len(cell) > lengths[i] {
+				lengths[i] = len(cell)
+			}
+		}
+	}
+
+	// determine flexFactor with base 10, used by flexColumns
+	for i, len := range lengths {
+		if len <= 10 {
+			lengths[i] = 1
+		} else {
+			lengths[i] = len / 10
+		}
+	}
+
+	// setup column data with flexColumns
+	for idx, header := range data.headers {
+		columns[idx] = table.NewFlexColumn(
+			strings.ToLower(header),
+			StyleHeader.Render(header),
+			lengths[idx]).WithFiltered(true).WithStyle(NoStyle)
+	}
+
+	// separate variable so we can share the row filling code
+	filtertbl := FilterTable{
+		maxColumns: len(data.headers),
+		Rows:       len(data.entries),
+		headerIdx:  hidx,
+		ctx:        ctx,
+		columns:    columns,
+	}
+
+	filtertbl.Table = table.New(columns)
+	filtertbl.fillRows()
+
+	// finally construct help buffer
+	generateHelp()
+
+	return filtertbl
+}
+
+// Applied to every cell on every change (TAB,up,down key, resize
+// event etc)
+func CellController(input table.StyledCellFuncInput, m FilterTable) lipgloss.Style {
+	if m.headerIdx[input.Column.Key()] == m.ctx.selectedColumn {
+		return StyleSelected
+	}
+
+	return NoStyle
+}
+
+// Selects or deselects ALL rows
+func (m *FilterTable) ToggleAllSelected() {
+	rows := m.Table.GetVisibleRows()
+	selected := m.Table.SelectedRows()
+
+	if len(selected) > 0 {
+		for i, row := range selected {
+			rows[i] = row.Selected(false)
+		}
+	} else {
+		for i, row := range rows {
+			rows[i] = row.Selected(true)
+		}
+	}
+
+	m.Table.WithRows(rows)
+}
+
+// ? pressed, display help message
+func (m FilterTable) ToggleHelp() {
+	m.ctx.showHelp = !m.ctx.showHelp
+}
+
+func (m FilterTable) Init() tea.Cmd {
+	return nil
+}
+
+// Forward call to context sort
+func (m *FilterTable) Sort(mode string) {
+	m.ctx.Sort(mode)
+	m.fillRows()
+}
+
+// Fills the table rows with our data. Called once on startup and
+// repeatedly if the user changes the sort order in some way
+func (m *FilterTable) fillRows() {
+	// required to be able to feed the model to the controller
+	controllerWrapper := func(input table.StyledCellFuncInput) lipgloss.Style {
+		return CellController(input, *m)
+	}
+
+	// fill the rows with style
+	rows := make([]table.Row, len(m.ctx.data.entries))
+	for idx, entry := range m.ctx.data.entries {
+		rowdata := make(table.RowData, len(entry))
+
+		for i, cell := range entry {
+			rowdata[strings.ToLower(m.ctx.data.headers[i])] =
+				table.NewStyledCellWithStyleFunc(cell+" ", controllerWrapper)
+		}
+
+		rows[idx] = table.NewRow(rowdata)
+	}
+
+	m.Table = m.Table.
+		WithRows(rows).
+		Filtered(true).
+		WithFuzzyFilter().
+		Focused(true).
+		SelectableRows(true).
+		WithSelectedText(" ", "✓").
+		WithFooterVisibility(true).
+		WithHeaderVisibility(true).
+		HighlightStyle(StyleSelected).
+		Border(customBorder)
+}
+
+// Part of the bubbletea event loop, called every tick
+func (m FilterTable) Update(msg tea.Msg) (tea.Model, tea.Cmd) {
+	var (
+		cmd  tea.Cmd
+		cmds []tea.Cmd
+	)
+
+	m.Table, cmd = m.Table.Update(msg)
+	cmds = append(cmds, cmd)
+
+	// If the user is about to enter filter text, do NOT respond to
+	// key bindings, as they might be part of the filter!
+	if !m.Table.GetIsFilterInputFocused() {
+		switch msg := msg.(type) {
+		case tea.KeyMsg:
+			switch msg.String() {
+			case "q":
+				m.quitting = true
+				m.unchanged = false
+				cmds = append(cmds, tea.Quit)
+
+			case "ctrl+c":
+				m.quitting = true
+				m.unchanged = true
+				cmds = append(cmds, tea.Quit)
+
+			case "a":
+				m.ToggleAllSelected()
+
+			case "tab":
+				m.SelectNextColumn()
+
+			case "?":
+				m.ToggleHelp()
+				m.recalculateTable()
+
+			case "s":
+				m.Sort("alphanumeric")
+
+			case "n":
+				m.Sort("numeric")
+
+			case "d":
+				m.Sort("duration")
+
+			case "t":
+				m.Sort("time")
+			}
+		}
+	}
+
+	// Happens when the terminal window has been resized
+	switch msg := msg.(type) {
+	case tea.WindowSizeMsg:
+		m.ctx.totalWidth = msg.Width
+		m.ctx.totalHeight = msg.Height
+
+		m.recalculateTable()
+	}
+
+	m.updateFooter()
+
+	return m, tea.Batch(cmds...)
+}
+
+// Add some info to the footer
+func (m *FilterTable) updateFooter() {
+	selected := m.Table.SelectedRows()
+	footer := fmt.Sprintf("selected: %d ", len(selected))
+
+	if m.Table.GetIsFilterInputFocused() {
+		footer = fmt.Sprintf("/%s %s", m.Table.GetCurrentFilter(), footer)
+	} else if m.Table.GetIsFilterActive() {
+		footer = fmt.Sprintf("Filter: %s %s", m.Table.GetCurrentFilter(), footer)
+	}
+
+	m.Table = m.Table.WithStaticFooter(HelpFooter + footer)
+}
+
+// Called on resize event (or if help has been toggled)
+func (m *FilterTable) recalculateTable() {
+	m.Table = m.Table.
+		WithTargetWidth(m.calculateWidth()).
+		WithMinimumHeight(m.calculateHeight()).
+		WithPageSize(m.calculateHeight() - ExtraRows)
+}
+
+func (m *FilterTable) calculateWidth() int {
+	return m.ctx.totalWidth - m.ctx.horizontalMargin
+}
+
+// Take help height into account, if enabled
+func (m *FilterTable) calculateHeight() int {
+	height := m.Rows + ExtraRows
+
+	if height >= m.ctx.totalHeight {
+		height = m.ctx.totalHeight - m.ctx.verticalMargin
+	} else {
+		height = m.ctx.totalHeight
+	}
+
+	if m.ctx.showHelp {
+		height = height - HelpRows
+	}
+
+	return height
+}
+
+// Part of the bubbletable event view, called every tick
+func (m FilterTable) View() string {
+	body := strings.Builder{}
+
+	if !m.quitting {
+		body.WriteString(m.Table.View())
+
+		if m.ctx.showHelp {
+			body.WriteString(Help)
+		}
+	}
+
+	return body.String()
+}
+
+// User hit the TAB key
+func (m *FilterTable) SelectNextColumn() {
+	if m.ctx.selectedColumn == m.maxColumns-1 {
+		m.ctx.selectedColumn = 0
+	} else {
+		m.ctx.selectedColumn++
+	}
+}
+
+// entry point from outside tablizer into table editor
+func tableEditor(conf *cfg.Config, data *Tabdata) (*Tabdata, error) {
+	// we render to STDERR to avoid dead lock when the user redirects STDOUT
+	// see https://github.com/charmbracelet/bubbletea/issues/860
+	//
+	// TODO: doesn't work with libgloss v2 anymore!
+
+	out := os.Stderr
+
+	if isatty.IsTerminal(os.Stdout.Fd()) {
+		out = os.Stdout
+	}
+
+	lipgloss.SetDefaultRenderer(lipgloss.NewRenderer(out))
+
+	ctx := &Context{data: data}
+
+	// Output to  STDERR because  there's a  known bubbletea/lipgloss
+	// issue: if  a program with a tui is  expected to write something
+	// to STDOUT when the tui is finished, then the styles do not
+	// work. So we write to STDERR (which works) and tablizer can
+	// still be used inside pipes.
+	program := tea.NewProgram(
+		NewModel(data, ctx),
+		tea.WithOutput(out),
+		tea.WithAltScreen())
+
+	m, err := program.Run()
+
+	if err != nil {
+		return nil, err
+	}
+
+	if m.(FilterTable).unchanged {
+		return data, err
+	}
+
+	// Data has been modified. Extract it, put it back into our own
+	// structure and give control back to cmdline tablizer.
+	filteredtable := m.(FilterTable)
+
+	data.entries = make([][]string, len(filteredtable.Table.SelectedRows()))
+	for pos, row := range m.(FilterTable).Table.SelectedRows() {
+		entry := make([]string, len(data.headers))
+		for idx, field := range data.headers {
+			cell := row.Data[strings.ToLower(field)]
+			switch value := cell.(type) {
+			case string:
+				entry[idx] = value
+			case table.StyledCell:
+				entry[idx] = value.Data.(string)
+			}
+		}
+
+		data.entries[pos] = entry
+	}
+
+	return data, err
+}
--- a/lib/yank.go
+++ b/lib/yank.go
@@ -0,0 +1,51 @@
+/*
+Copyright © 2022-2025 Thomas von Dein
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package lib
+
+import (
+	"log"
+	"strings"
+
+	"github.com/tiagomelo/go-clipboard/clipboard"
+	"codeberg.org/scip/tablizer/cfg"
+)
+
+func yankColumns(conf cfg.Config, data *Tabdata) {
+	var yank []string
+
+	if len(data.entries) == 0 || len(conf.UseYankColumns) == 0 {
+		return
+	}
+
+	for _, row := range data.entries {
+		for i, field := range row {
+			for _, idx := range conf.UseYankColumns {
+				if i == idx-1 {
+					yank = append(yank, field)
+				}
+			}
+		}
+	}
+
+	if len(yank) > 0 {
+		cb := clipboard.New(clipboard.ClipboardOptions{Primary: true})
+		if err := cb.CopyText(strings.Join(yank, " ")); err != nil {
+			log.Fatalln("error writing string to clipboard:", err)
+		}
+	}
+}
--- a/lib/yank_test.go
+++ b/lib/yank_test.go
@@ -0,0 +1,68 @@
+/*
+Copyright © 2025 Thomas von Dein
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package lib
+
+import (
+	"bytes"
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/tiagomelo/go-clipboard/clipboard"
+	"codeberg.org/scip/tablizer/cfg"
+)
+
+var yanktests = []struct {
+	name   string
+	yank   []int // -y$colum,$column... after processing
+	filter string
+	expect string
+}{
+	{
+		name:   "one",
+		yank:   []int{1},
+		filter: "beta",
+	},
+}
+
+func DISABLED_TestYankColumns(t *testing.T) {
+	cb := clipboard.New()
+
+	for _, testdata := range yanktests {
+		testname := fmt.Sprintf("yank-%s-filter-%s",
+			testdata.name, testdata.filter)
+		t.Run(testname, func(t *testing.T) {
+			conf := cfg.Config{
+				OutputMode:     cfg.ASCII,
+				UseYankColumns: testdata.yank,
+				NoColor:        true,
+			}
+
+			conf.ApplyDefaults()
+			data := newData() // defined in printer_test.go, reused here
+
+			var writer bytes.Buffer
+			printData(&writer, conf, &data)
+
+			got, err := cb.PasteText()
+
+			assert.NoError(t, err)
+			assert.EqualValues(t, testdata.expect, got)
+		})
+	}
+}
--- a/main.go
+++ b/main.go
@@ -18,9 +18,17 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
 package main

 import (
-	"github.com/tlinden/tablizer/cmd"
+	"os"
+
+	"codeberg.org/scip/tablizer/cmd"
 )

 func main() {
-	cmd.Execute()
+	os.Exit(Main())
+}
+
+func Main() int {
+	cmd.Execute()
+
+	return 0 // cmd takes care of exit 1 itself
 }
--- a/main_test.go
+++ b/main_test.go
@@ -0,0 +1,19 @@
+package main
+
+import (
+	"testing"
+
+	"github.com/rogpeppe/go-internal/testscript"
+)
+
+func TestMain(m *testing.M) {
+	testscript.Main(m, map[string]func(){
+		"tablizer": main,
+	})
+}
+
+func TestTablizer(t *testing.T) {
+	testscript.Run(t, testscript.Params{
+		Dir: "t",
+	})
+}
--- a/mkrel.sh
+++ b/mkrel.sh
@@ -42,8 +42,15 @@ for D in $DIST; do
    binfile="releases/${tool}-${os}-${arch}-${version}"
    tardir="${tool}-${os}-${arch}-${version}"
    tarfile="releases/${tool}-${os}-${arch}-${version}.tar.gz"
+    pie=""
+
+    if test "$D" = "linux/amd64"; then
+        pie="-buildmode=pie"
+    fi
+    
    set -x
-    GOOS=${os} GOARCH=${arch} go build -o ${binfile} -ldflags "-X 'github.com/tlinden/tablizer/lib.VERSION=${version}'"
+    GOOS=${os} GOARCH=${arch} go build -tags osusergo,netgo -ldflags "-extldflags=-static -w -X 'codeberg.org/scip/tablizer/cfg.VERSION=${version}'" --trimpath $pie -o ${binfile}
+    strip --strip-all ${binfile}
    mkdir -p ${tardir}
    cp ${binfile} README.md LICENSE ${tardir}/
    echo 'tool = tablizer
--- a/t/plugintest.zy
+++ b/t/plugintest.zy
@@ -0,0 +1,10 @@
+/*
+Simple filter hook function. Splits the argument by whitespace,
+fetches the 2nd element, converts it to an int and returns true
+if it s larger than 5, false otherwise.
+*/
+(defn uselarge [line]
+  (cond (> (atoi (second (resplit line `\s+`))) 5) true false))
+
+/* Register the filter hook */
+(addhook %filter %uselarge)
--- a/t/test-basics.txtar
+++ b/t/test-basics.txtar
@@ -0,0 +1,42 @@
+# usage
+exec tablizer --help
+stdout Usage
+
+exec tablizer -h
+stdout show
+
+# version
+exec tablizer -V
+stdout version
+
+# completion
+exec tablizer --completion bash
+stdout __tablizer_init_completion
+
+# use config (configures  colors, but these are not  being used, since
+# this  env doesn't  support it,  but at  least it  should succeed.
+exec tablizer -f config.hcl -r testtable.txt Runn
+stdout Runn
+
+
+
+# will be automatically created in work dir
+-- testtable.txt --
+NAME                                                 READY   STATUS    RESTARTS       AGE
+alertmanager-kube-prometheus-alertmanager-0          2/2     Running   35 (45m ago)   11d
+grafana-fcc54cbc9-bk7s8                              1/1     Running   17 (45m ago)   1d
+kube-prometheus-blackbox-exporter-5d85b5d8f4-tskh7   1/1     Running   17 (45m ago)   1h44m
+kube-prometheus-kube-state-metrics-b4cd9487-75p7f    1/1     Running   20 (45m ago)   45m
+kube-prometheus-node-exporter-bfzpl                  1/1     Running   17 (45m ago)   54s
+
+
+-- config.hcl --
+BG             = "lightGreen"
+FG             = "white"
+HighlightBG    = "lightGreen"
+HighlightFG    = "white"
+NoHighlightBG  = "white"
+NoHighlightFG  = "lightGreen"
+HighlightHdrBG = "red"
+HighlightHdrFG = "white"
+
--- a/t/test-csv.txtar
+++ b/t/test-csv.txtar
@@ -0,0 +1,26 @@
+# reading from file and matching with lowercase words
+exec tablizer -c name,status -r testtable.csv -s,
+stdout grafana.*Runn
+
+# matching mixed case
+exec tablizer -c NAME,staTUS -r testtable.csv -s,
+stdout grafana.*Runn
+
+# matching using numbers
+exec tablizer -c 1,3 -r testtable.csv -s,
+stdout grafana.*Runn
+
+# matching using regex
+exec tablizer -c 'na.*,stat.' -r testtable.csv -s,
+stdout grafana.*Runn
+
+
+# will be automatically created in work dir
+-- testtable.csv --
+NAME,READY,STATUS,RESTARTS,AGE
+alertmanager-kube-prometheus-alertmanager-0,2/2,Running,35 (45m ago),11d
+grafana-fcc54cbc9-bk7s8,1/1,Running,17 (45m ago),1d
+kube-prometheus-blackbox-exporter-5d85b5d8f4-tskh7,1/1,Running,17 (45m ago),1h44m
+kube-prometheus-kube-state-metrics-b4cd9487-75p7f,1/1,Running,20 (45m ago),45m
+kube-prometheus-node-exporter-bfzpl,1/1,Running,17 (45m ago),54s
+
--- a/t/test-filtering.txtar
+++ b/t/test-filtering.txtar
@@ -0,0 +1,21 @@
+# filtering
+exec tablizer -r testtable.txt -F name=grafana
+stdout grafana.*Runn
+
+# filtering two columns
+exec tablizer -r testtable.txt -F name=prometh -F age=1h
+stdout blackbox.*Runn
+
+# filtering two same columns
+exec tablizer -r testtable.txt -F name=prometh -F name=alert
+stdout prometheus-alertmanager.*Runn
+
+
+# will be automatically created in work dir
+-- testtable.txt --
+NAME                                                 READY   STATUS    RESTARTS       AGE
+alertmanager-kube-prometheus-alertmanager-0          2/2     Running   35 (45m ago)   11d
+grafana-fcc54cbc9-bk7s8                              1/1     Running   17 (45m ago)   1d
+kube-prometheus-blackbox-exporter-5d85b5d8f4-tskh7   1/1     Running   17 (45m ago)   1h44m
+kube-prometheus-kube-state-metrics-b4cd9487-75p7f    1/1     Running   20 (45m ago)   45m
+kube-prometheus-node-exporter-bfzpl                  1/1     Running   17 (45m ago)   54s
--- a/t/test-headermatching.txtar
+++ b/t/test-headermatching.txtar
@@ -0,0 +1,25 @@
+# reading from file and matching with lowercase words
+exec tablizer -c name,status -r testtable.txt
+stdout grafana.*Runn
+
+# matching mixed case
+exec tablizer -c NAME,staTUS -r testtable.txt
+stdout grafana.*Runn
+
+# matching using numbers
+exec tablizer -c 1,3 -r testtable.txt
+stdout grafana.*Runn
+
+# matching using regex
+exec tablizer -c 'na.*,stat.' -r testtable.txt
+stdout grafana.*Runn
+
+
+# will be automatically created in work dir
+-- testtable.txt --
+NAME                                                 READY   STATUS    RESTARTS       AGE
+alertmanager-kube-prometheus-alertmanager-0          2/2     Running   35 (45m ago)   11d
+grafana-fcc54cbc9-bk7s8                              1/1     Running   17 (45m ago)   1d
+kube-prometheus-blackbox-exporter-5d85b5d8f4-tskh7   1/1     Running   17 (45m ago)   1h44m
+kube-prometheus-kube-state-metrics-b4cd9487-75p7f    1/1     Running   20 (45m ago)   45m
+kube-prometheus-node-exporter-bfzpl                  1/1     Running   17 (45m ago)   54s
--- a/t/test-multipatterns.txtar
+++ b/t/test-multipatterns.txtar
@@ -0,0 +1,46 @@
+# filtering
+
+# a AND b
+exec tablizer -r testtable.txt -H -cspecies invasive imperium
+stdout 'namak'
+! stdout human
+
+# a AND !b
+exec tablizer -r testtable.txt -H -cspecies invasive '/imperium/!'
+stdout 'human'
+! stdout namak
+
+# a AND !b AND c
+exec tablizer -r testtable.txt -H -cspecies peaceful '/imperium/!' planetary
+stdout 'kenaha'
+! stdout 'namak|heduu|riedl'
+
+# case insensitive
+exec tablizer -r testtable.txt -H -cspecies '/REGIONAL/i'
+stdout namak
+! stdout 'human|riedl|heduu|kenaa'
+
+# case insensitive negated
+exec tablizer -r testtable.txt -H -cspecies '/REGIONAL/!i'
+stdout 'human|riedl|heduu|kenaa'
+! stdout namak
+
+# !a AND !b
+exec tablizer -r testtable.txt -H -cspecies '/galactic/!' '/planetary/!'
+stdout namak
+! stdout 'human|riedl|heduu|kenaa'
+
+# same case insensitive
+exec tablizer -r testtable.txt -H -cspecies '/GALACTIC/i!' '/PLANETARY/!i'
+stdout namak
+! stdout 'human|riedl|heduu|kenaa'
+
+# will be automatically created in work dir
+-- testtable.txt --
+SPECIES   TYPE         HOME     STAGE             SPREAD
+human     invasive     earth    brink             planetary
+riedl     peaceful     keauna   civilized         pangalactic
+namak     invasive     namak    imperium          regional
+heduu     peaceful     iu       imperium          galactic
+kenaha    peaceful     kohi     hunter-gatherer   planetary
+
--- a/t/test-sort.txtar
+++ b/t/test-sort.txtar
@@ -0,0 +1,49 @@
+# sort by name
+exec tablizer -r testtable.txt -k 1
+stdout '^alert.*\n^grafana.*\n^kube'
+
+# sort by name reversed
+exec tablizer -r testtable.txt -k 1 -D
+stdout 'kube.*\n^grafana.*\n^alert'
+
+# sort by starts numerically
+exec tablizer -r testtable.txt -k 4 -i -c4
+stdout '17\s*\n^20\s*\n^35'
+
+# sort by starts numerically reversed
+exec tablizer -r testtable.txt -k 4 -i -c4 -D
+stdout '35\s*\n^20\s*\n^17'
+
+# sort by age
+exec tablizer -r testtable.txt -k 5 -a
+stdout '45m\s*\n.*1h44m'
+
+# sort by age reverse
+exec tablizer -r testtable.txt -k 5 -a -D
+stdout '1h44m\s*\n.*45m'
+
+# sort by time
+exec tablizer -r timetable.txt -k 2 -t
+stdout '^sel.*\n^foo.*\nbar'
+
+# sort by time reverse
+exec tablizer -r timetable.txt -k 2 -t -D
+stdout '^bar.*\n^foo.*\nsel'
+
+
+# will be automatically created in work dir
+-- testtable.txt --
+NAME                                                 READY   STATUS    STARTS      AGE
+alertmanager-kube-prometheus-alertmanager-0          2/2     Running   35          11d
+kube-prometheus-blackbox-exporter-5d85b5d8f4-tskh7   1/1     Running   17          1h44m
+grafana-fcc54cbc9-bk7s8                              1/1     Running   17          1d
+kube-prometheus-kube-state-metrics-b4cd9487-75p7f    1/1     Running   20          45m
+kube-prometheus-node-exporter-bfzpl                  1/1     Running   17          54s
+
+
+
+-- timetable.txt --
+NAME  TIME
+foo   2024-11-18T12:00:00+01:00
+bar   2024-11-18T12:45:00+01:00
+sel   2024-07-18T12:00:00+01:00
--- a/t/test-stdin.txtar
+++ b/t/test-stdin.txtar
@@ -0,0 +1,18 @@
+# reading from stdin and matching with lowercase words
+stdin testtable.txt
+exec tablizer -c name,status
+stdout grafana.*Runn
+
+# reading from -r stdin and matching with lowercase words
+stdin testtable.txt
+exec tablizer -c name,status -r -
+stdout grafana.*Runn
+
+# will be automatically created in work dir
+-- testtable.txt --
+NAME                                                 READY   STATUS    RESTARTS       AGE
+alertmanager-kube-prometheus-alertmanager-0          2/2     Running   35 (45m ago)   11d
+grafana-fcc54cbc9-bk7s8                              1/1     Running   17 (45m ago)   1d
+kube-prometheus-blackbox-exporter-5d85b5d8f4-tskh7   1/1     Running   17 (45m ago)   1h44m
+kube-prometheus-kube-state-metrics-b4cd9487-75p7f    1/1     Running   20 (45m ago)   45m
+kube-prometheus-node-exporter-bfzpl                  1/1     Running   17 (45m ago)   54s
--- a/t/test-template.txtar
+++ b/t/test-template.txtar
@@ -0,0 +1,16 @@
+exec tablizer -r testtable.txt -P '{{.species | title}}s are {{.type }}'
+stdout 'Humans are invasive'
+
+exec tablizer -r testtable.txt -P '{{.species | sha256sum}}'
+stdout '79a5478768d2447431a90f7f4549df735f50ad541371464c248abc7522dc3a01'
+
+exec tablizer -r testtable.txt -P '{{add 100 .count}}'
+stdout 104
+
+-- testtable.txt --
+SPECIES   TYPE         HOME     COUNT  STAGE
+human     invasive     earth    4      brink
+riedl     peaceful     keauna   33     civilized
+namak     invasive     namak    123    imperium
+heduu     peaceful     iu       66     imperium
+kenaha    peaceful     kohi     3333   hunter-gatherer
--- a/t/test-transpose.txtar
+++ b/t/test-transpose.txtar
@@ -0,0 +1,21 @@
+# transpose one field
+exec tablizer -r testtable.txt -T status -R '/Running/OK/'
+stdout grafana.*OK
+
+# transpose two fields
+exec tablizer -r testtable.txt -T name,status -R '/alertmanager-//' -R '/Running/OK/' 
+stdout prometheus-0.*OK
+
+# transpose one field and show one column
+exec tablizer -r testtable.txt -T status -R '/Running/OK/' -c name
+! stdout grafana.*OK
+
+
+# will be automatically created in work dir
+-- testtable.txt --
+NAME                                                 READY   STATUS    RESTARTS       AGE
+alertmanager-kube-prometheus-alertmanager-0          2/2     Running   35 (45m ago)   11d
+grafana-fcc54cbc9-bk7s8                              1/1     Running   17 (45m ago)   1d
+kube-prometheus-blackbox-exporter-5d85b5d8f4-tskh7   1/1     Running   17 (45m ago)   1h44m
+kube-prometheus-kube-state-metrics-b4cd9487-75p7f    1/1     Running   20 (45m ago)   45m
+kube-prometheus-node-exporter-bfzpl                  1/1     Running   17 (45m ago)   54s
--- a/t/test.sh
+++ b/t/test.sh
@@ -1,45 +0,0 @@
-#!/bin/sh
-
-# simple commandline unit test script
-
-t="../tablizer"
-fail=0
-
-ex() {
-    # execute a test, report+exit on error, stay silent otherwise
-    log="/tmp/test-tablizer.$$.log"
-    name=$1
-    shift
-
-    echo -n "TEST $name "
-
-    $* > $log 2>&1
-
-    if test $? -ne 0; then
-        echo "failed, see $log"
-        fail=1
-    else
-        echo "ok"
-        rm -f $log
-    fi
-}
-
-# only use files in test dir
-cd $(dirname $0)
-
-echo "Executing commandline tests ..."
-
-# io pattern tests
-ex io-pattern-and-file $t bk7 testtable.kube
-cat testtable.kube | ex io-pattern-and-stdin $t bk7
-cat testtable.kube | ex io-pattern-and-stdin-dash $t bk7 -
-
-# same w/o pattern
-ex io-just-file $t testtable.kube
-cat testtable.kube | ex io-just-stdin $t
-cat testtable.kube | ex io-just-stdin-dash $t -
-
-if test $fail -ne 0; then
-    echo "!!! Some tests failed !!!"
-    exit 1
-fi
--- a/t/testtable.csv
+++ b/t/testtable.csv
@@ -0,0 +1,6 @@
+NAME,DURATION
+x,10
+a,100
+z,0
+u,4
+k,6
--- a/t/testtable2
+++ b/t/testtable2
@@ -0,0 +1,6 @@
+NAME  DURATION
+x     10
+a     100
+z     0
+u     4
+k     6
--- a/t/testtable3
+++ b/t/testtable3
@@ -0,0 +1,6 @@
+NAME                                                 READY   STATUS    STARTS      AGE
+alertmanager-kube-prometheus-alertmanager-0          2/2     Running   35          11d
+kube-prometheus-blackbox-exporter-5d85b5d8f4-tskh7   1/1     Running   17          1h44m
+grafana-fcc54cbc9-bk7s8                              1/1     Running   17          1d
+kube-prometheus-kube-state-metrics-b4cd9487-75p7f    1/1     Running   20          45m
+kube-prometheus-node-exporter-bfzpl                  1/1     Running   17          54s
--- a/t/testtable4
+++ b/t/testtable4
@@ -0,0 +1,4 @@
+ONE  TWO
+1    4
+3    1
+5    2
--- a/t/testtable5
+++ b/t/testtable5
@@ -0,0 +1,6 @@
+SPECIES   TYPE         HOME     STAGE
+human     invasive     earth    brink
+riedl     peaceful     keauna   civilized
+namak     invasive     namak    imperium
+heduu     peaceful     iu       imperium
+kenaha    peaceful     kohi     hunter-gatherer
--- a/tablizer.1
+++ b/tablizer.1
@@ -133,7 +133,7 @@
 .\" ========================================================================
 .\"
 .IX Title "TABLIZER 1"
-.TH TABLIZER 1 "2023-01-23" "1" "User Commands"
+.TH TABLIZER 1 "2025-12-08" "1" "User Commands"
 .\" For nroff, turn off justification.  Always turn off hyphenation; it makes
 .\" way too many mistakes in technical documents.
 .if n .ad l
@@ -144,37 +144,54 @@ tablizer \- Manipulate tabular output of other programs
 .IX Header "SYNOPSIS"
 .Vb 2
 \&    Usage:
-\&      tablizer [regex] [file, ...] [flags]
+\&      tablizer [regex,...] [\-r file] [flags]
 \&    
 \&    Operational Flags:
-\&      \-c, \-\-columns string     Only show the speficied columns (separated by ,)
-\&      \-v, \-\-invert\-match       select non\-matching rows
-\&      \-n, \-\-no\-numbering       Disable header numbering
-\&      \-N, \-\-no\-color           Disable pattern highlighting
-\&      \-s, \-\-separator string   Custom field separator
-\&      \-k, \-\-sort\-by int        Sort by column (default: 1)
+\&      \-c, \-\-columns string               Only show the speficied columns (separated by ,)
+\&      \-v, \-\-invert\-match                 select non\-matching rows
+\&      \-n, \-\-numbering                    Enable header numbering
+\&      \-N, \-\-no\-color                     Disable pattern highlighting
+\&      \-H, \-\-no\-headers                   Disable headers display
+\&      \-s, \-\-separator <string>           Custom field separator (maybe char, string or :class:)
+\&      \-k, \-\-sort\-by <int|name>           Sort by column (default: 1)
+\&      \-z, \-\-fuzzy                        Use fuzzy search [experimental]
+\&      \-F, \-\-filter <field[!]=reg>        Filter given field with regex, can be used multiple times
+\&      \-T, \-\-transpose\-columns string     Transpose the speficied columns (separated by ,)
+\&      \-R, \-\-regex\-transposer </from/to/> Apply /search/replace/ regexp to fields given in \-T
+\&      \-j, \-\-json                         Read JSON input (must be array of hashes)
+\&      \-I, \-\-interactive                  Interactively filter and select rows
+\&      \-g, \-\-auto\-headers                 Generate headers if there are none present in input
+\&      \-x, \-\-custom\-headers a,b,...       Use custom headers, separated by comma
 \&
 \&    Output Flags (mutually exclusive):
-\&      \-X, \-\-extended           Enable extended output
-\&      \-M, \-\-markdown           Enable markdown table output
-\&      \-O, \-\-orgtbl             Enable org\-mode table output
-\&      \-S, \-\-shell              Enable shell evaluable ouput
-\&      \-Y, \-\-yaml               Enable yaml output
-\&      \-C, \-\-csv                Enable CSV output
-\&      \-A, \-\-ascii              Default output mode, ascii tabular
+\&      \-X, \-\-extended                     Enable extended output
+\&      \-M, \-\-markdown                     Enable markdown table output
+\&      \-O, \-\-orgtbl                       Enable org\-mode table output
+\&      \-S, \-\-shell                        Enable shell evaluable output
+\&      \-Y, \-\-yaml                         Enable yaml output
+\&      \-J, \-\-jsonout                      Enable JSON output
+\&      \-C, \-\-csv                          Enable CSV output
+\&      \-A, \-\-ascii                        Default output mode, ascii tabular
+\&      \-P, \-\-template <tpl>               Enable template mode with template <tpl>
+\&      \-L, \-\-hightlight\-lines             Use alternating background colors for tables
+\&      \-o, \-\-ofs <char>                   Output field separator, used by \-A and \-C. 
+\&      \-y, \-\-yank\-columns                 Yank specified columns (separated by ,) to clipboard,
+\&                                         space separated
 \&
 \&    Sort Mode Flags (mutually exclusive):
-\&      \-a, \-\-sort\-age           sort according to age (duration) string
-\&      \-D, \-\-sort\-desc          Sort in descending order (default: ascending)
-\&      \-i, \-\-sort\-numeric       sort according to string numerical value
-\&      \-t, \-\-sort\-time          sort according to time string
+\&      \-a, \-\-sort\-age                     sort according to age (duration) string
+\&      \-D, \-\-sort\-desc                    Sort in descending order (default: ascending)
+\&      \-i, \-\-sort\-numeric                 sort according to string numerical value
+\&      \-t, \-\-sort\-time                    sort according to time string
 \&
 \&    Other Flags:
-\&          \-\-completion <shell> Generate the autocompletion script for <shell>
-\&      \-d, \-\-debug              Enable debugging
-\&      \-h, \-\-help               help for tablizer
-\&      \-m, \-\-man                Display manual page
-\&      \-v, \-\-version            Print program version
+\&      \-r  \-\-read\-file <file>             Use <file> as input instead of STDIN
+\&          \-\-completion <shell>           Generate the autocompletion script for <shell>
+\&      \-f, \-\-config <file>                Configuration file (default: ~/.config/tablizer/config)
+\&      \-d, \-\-debug                        Enable debugging
+\&      \-h, \-\-help                         help for tablizer
+\&      \-m, \-\-man                          Display manual page
+\&      \-V, \-\-version                      Print program version
 .Ve
 .SH "DESCRIPTION"
 .IX Header "DESCRIPTION"
@@ -203,20 +220,20 @@ pattern. Hence:
 .PP
 .Vb 2
 \&   # read from STDIN
-\&   kubectl get pods | tablizer
+\&   > kubectl get pods | tablizer
 \&
 \&   # read a file
-\&   tablizer filename
+\&   > tablizer \-r filename
 \&
 \&   # search for pattern in a file (works like grep)
-\&   tablizer regex filename
+\&   > tablizer regex \-r filename
 \&
 \&   # search for pattern in STDIN
-\&   kubectl get pods | tablizer regex
+\&   > kubectl get pods | tablizer regex
 .Ve
 .PP
-The output  looks like the  original one  but every header  field will
-have a numer associated with it, e.g.:
+The output looks like the original  one. You can add the option \fB\-n\fR,
+then every header field will have a numer associated with it, e.g.:
 .PP
 .Vb 1
 \&   NAME(1) READY(2) STATUS(3) RESTARTS(4) AGE(5)
@@ -226,23 +243,48 @@ These numbers denote the column and  you can use them to specify which
 columns you want to have in your output (see \s-1COLUMNS\s0:
 .PP
 .Vb 1
-\&   kubectl get pods | tablizer \-c1,3
+\&   > kubectl get pods | tablizer \-c1,3
 .Ve
 .PP
 You can specify the numbers in any order but output will always follow
 the original order.
 .PP
-The numbering can be suppressed by using the \fB\-n\fR option.
+However, you may also just use the header names instead of numbers,
+eg:
+.PP
+.Vb 1
+\&   > kubectl get pods | tablizer \-cname,status
+.Ve
+.PP
+You can also use regular expressions with \fB\-c\fR, eg:
+.PP
+.Vb 1
+\&   > kubectl get pods | tablizer \-c \*(Aq[ae]\*(Aq
+.Ve
+.PP
+By  default tablizer  shows  a  header containing  the  names of  each
+column.  This can  be disabled using the \fB\-H\fR option.   Be aware that
+this only affects tabular output modes.  Shell, Extended, Yaml and \s-1CSV\s0
+output modes always use the column names.
 .PP
 By  default, if  a  \fBpattern\fR  has been  speficied,  matches will  be
 highlighted. You can disable this behavior with the \fB\-N\fR option.
 .PP
 Use the  \fB\-k\fR option to specify  by which column to  sort the tabular
-data (as in \s-1GNU\s0 \fBsort\fR\|(1)). The default sort column is the first one. To
-disable sorting at all, supply 0  (Zero) to \-k. The default sort order
-is ascending. You can change this to descending order using the option
-\&\fB\-D\fR. The default  sort order is by string, but  there are other sort
-modes:
+data  (as in  \s-1GNU\s0  \fBsort\fR\|(1)).  The default  sort  column  is the  first
+one. You can specify column numbers or names. Column numbers start
+with 1, names are case insensitive. You can specify multiple columns
+separated by comma to sort, but the type must be the same. For example
+if you want to sort numerically, all columns must be numbers. If you
+use column numbers, then be aware, that these are the numbers before
+column extraction. For example if you have a table with 4 columns and
+specify \f(CW\*(C`\-c4\*(C'\fR, then only 1 column (the fourth) will be printed,
+however if you want to sort by this column, you'll have to specify
+\&\f(CW\*(C`\-k4\*(C'\fR.
+.PP
+The default  sort order  is ascending.  You can  change this  to
+descending order using the option \fB\-D\fR.  The default sort order is by
+alphanumeric string, but there are other sort modes:
 .IP "\fB\-a \-\-sort\-age\fR" 4
 .IX Item "-a --sort-age"
 Sorts duration strings like \*(L"1d4h32m51s\*(R".
@@ -255,38 +297,147 @@ Sorts timestamps.
 .PP
 Finally the  \fB\-d\fR option  enables debugging  output which  is mostly
 useful for the developer.
-.SS "\s-1PATTERNS\s0"
-.IX Subsection "PATTERNS"
-You can reduce the rows being  displayed by using a regular expression
-pattern.  The  regexp is  \s-1PCRE\s0 compatible, refer  to the  syntax cheat
-sheet here: <https://github.com/google/re2/wiki/Syntax>.  If you want
-to read  a more comprehensive  documentation about the topic  and have
-perl installed you can read it with:
+.SS "\s-1SEPARATOR\s0"
+.IX Subsection "SEPARATOR"
+The option \fB\-s\fR can be a single character, in which case the \s-1CSV\s0
+parser will be invoked. You can also specify a string as
+separator. The string will be interpreted as literal string unless it
+is a valid go regular expression. For example:
+.PP
+.Vb 1
+\&    \-s \*(Aq\et{2,}\e\*(Aq
+.Ve
+.PP
+is being used as a regexp and will match two or more consecutive tabs.
+.PP
+.Vb 1
+\&    \-s \*(Aqfoo\*(Aq
+.Ve
+.PP
+on the other hand is no regular expression and will be used literally.
+.PP
+To make live easier, there are a couple of predefined regular
+expressions, which you can specify as classes:
+.Sp
+.RS 4
+* 		:tab:
+.Sp
+Matches a tab and eats spaces around it.
+.Sp
+*		:spaces:
+.Sp
+Matches 2 or more spaces.
+.Sp
+*		:pipe:
+.Sp
+Matches a pipe character and eats spaces around it.
+.Sp
+*		:default:
+.Sp
+Matches 2 or more spaces or tab. This is the default separator if none
+is specified.
+.Sp
+*		:nonword:
+.Sp
+Matches a non-word character.
+.Sp
+*		:nondigit:
+.Sp
+Matches a non-digit character.
+.Sp
+*		:special:
+.Sp
+Matches one or more special chars like brackets, dollar sign, slashes etc.
+.Sp
+*		:nonprint:
+.Sp
+Matches one or more non-printable characters.
+.RE
+.SS "\s-1PATTERNS AND FILTERING\s0"
+.IX Subsection "PATTERNS AND FILTERING"
+You can reduce  the rows being displayed by using  one or more regular
+expression patterns.   The regexp  language being used  is the  one of
+\&\s-1GOLANG,\s0     refer    to     the    syntax     cheat    sheet     here:
+<https://pkg.go.dev/regexp/syntax>.
+.PP
+If you  want to  read a more  comprehensive documentation  about the
+topic and have perl installed you can read it with:
 .PP
 .Vb 1
 \&    perldoc perlre
 .Ve
 .PP
-Or read it online: <https://perldoc.perl.org/perlre>.
+Or read it online: <https://perldoc.perl.org/perlre>. But please note
+that the \s-1GO\s0 regexp engine does \s-1NOT\s0 support all perl regex terms,
+especially look-ahead and look-behind.
 .PP
-A note on  modifiers: the regexp engine used in  tablizer uses another
-modifier syntax:
+If you want to supply flags to a regex, then surround it with slashes
+and append the flag. The following flags are supported:
 .PP
-.Vb 1
-\&    (?MODIFIER)
+.Vb 2
+\&    i => case insensitive
+\&    ! => negative match
 .Ve
 .PP
-The most important modifiers are:
-.PP
-\&\f(CW\*(C`i\*(C'\fR ignore case
-\&\f(CW\*(C`m\*(C'\fR multiline mode
-\&\f(CW\*(C`s\*(C'\fR single line mode
-.PP
 Example for a case insensitive search:
 .PP
 .Vb 1
-\&    kubectl get pods \-A | tablizer "(?i)account"
+\&    > kubectl get pods \-A | tablizer "/account/i"
 .Ve
+.PP
+If you use the \f(CW\*(C`!\*(C'\fR flag, then the regex match will be negated, that
+is, if a line in the input matches the given regex, but \f(CW\*(C`!\*(C'\fR is
+supplied, tablizer will \s-1NOT\s0 include it in the output.
+.PP
+For example, here we want to get all lines matching \*(L"foo\*(R" but not
+\&\*(L"bar\*(R":
+.PP
+.Vb 1
+\&    cat table | tablizer foo \*(Aq/bar/!\*(Aq
+.Ve
+.PP
+This would match a line \*(L"foo zorro\*(R" but not \*(L"foo bar\*(R".
+.PP
+The flags can also be combined.
+.PP
+You  can also use  the experimental  fuzzy search  feature by  providing the
+option \fB\-z\fR, in which case the  pattern is regarded as a fuzzy search
+term, not a regexp.
+.PP
+Sometimes you want to  filter by one or more columns.  You can do that
+using the \fB\-F\fR option. The option can be specified multiple times and
+has the following format:
+.PP
+.Vb 1
+\&    fieldname=regexp
+.Ve
+.PP
+Fieldnames (== columns headers) are case insensitive.
+.PP
+If you specify more than one filter, both filters have to match (\s-1AND\s0
+operation).
+.PP
+These field filters can also be negated:
+.PP
+.Vb 1
+\&    fieldname!=regexp
+.Ve
+.PP
+If the option \fB\-v\fR is specified, the filtering is inverted.
+.SS "\s-1INTERACTIVE FILTERING\s0"
+.IX Subsection "INTERACTIVE FILTERING"
+You can also use the interactive mode, enabled with \f(CW\*(C`\-I\*(C'\fR to filter
+and select rows. This mode is complementary, that is, other filter
+options are still being respected.
+.PP
+To enter e filter, hit \f(CW\*(C`/\*(C'\fR, enter a filter string and finish with
+\&\f(CW\*(C`ENTER\*(C'\fR. Use \f(CW\*(C`SPACE\*(C'\fR to select/deselect rows, use \f(CW\*(C`a\*(C'\fR to select all
+(visible) rows.
+.PP
+Commit your selection with \f(CW\*(C`q\*(C'\fR. The selected rows are being fed to
+the requested output mode as usual. Abort with \f(CW\*(C`CTRL\-c\*(C'\fR, in which
+case the results of the interactive mode are being ignored and all
+rows are being fed to output.
 .SS "\s-1COLUMNS\s0"
 .IX Subsection "COLUMNS"
 The  parameter  \fB\-c\fR  can  be  used  to  specify,  which  columns  to
@@ -310,7 +461,7 @@ Lets take this table:
 We want to see only the \s-1CMD\s0 column and use a regex for this:
 .PP
 .Vb 6
-\&    ps | tablizer \-s \*(Aq\es+\*(Aq \-c C
+\&    > ps | tablizer \-s \*(Aq\es+\*(Aq \-c C
 \&    CMD(4)
 \&    bash
 \&    ps
@@ -319,6 +470,50 @@ We want to see only the \s-1CMD\s0 column and use a regex for this:
 .Ve
 .PP
 where \*(L"C\*(R" is our regexp which matches \s-1CMD.\s0
+.PP
+If a column specifier doesn't look like a regular expression, matching
+against header  fields will  be case  insensitive. So,  if you  have a
+field with  the name \f(CW\*(C`ID\*(C'\fR then  these will all match:  \f(CW\*(C`\-c id\*(C'\fR, \f(CW\*(C`\-c
+Id\*(C'\fR. The same rule applies to the options \f(CW\*(C`\-T\*(C'\fR and \f(CW\*(C`\-F\*(C'\fR.
+.SS "\s-1TRANSPOSE FIELDS USING REGEXPS\s0"
+.IX Subsection "TRANSPOSE FIELDS USING REGEXPS"
+You can manipulate field contents using regular expressions. You have
+to tell tablizer which field[s] to operate on using the option \f(CW\*(C`\-T\*(C'\fR
+and the search/replace pattern using \f(CW\*(C`\-R\*(C'\fR. The number of columns and
+patterns must match.
+.PP
+A search/replace pattern consists of the following elements:
+.PP
+.Vb 1
+\&    /search\-regexp/replace\-string/
+.Ve
+.PP
+The separator can be any valid character. Especially if you want to
+use a regexp containing the \f(CW\*(C`/\*(C'\fR character, eg:
+.PP
+.Vb 1
+\&    |search\-regexp|replace\-string|
+.Ve
+.PP
+Example:
+.PP
+.Vb 7
+\&    > cat t/testtable2
+\&    NAME  DURATION
+\&    x     10
+\&    a     100
+\&    z     0
+\&    u     4
+\&    k     6
+\&    
+\&    > cat t/testtable2 | tablizer \-T2 \-R \*(Aq/^\ed/4/\*(Aq \-n
+\&    NAME    DURATION 
+\&    x       40      
+\&    a       400     
+\&    z       4       
+\&    u       4       
+\&    k       4
+.Ve
 .SS "\s-1OUTPUT MODES\s0"
 .IX Subsection "OUTPUT MODES"
 There might be cases  when the tabular output of a  program is way too
@@ -329,7 +524,7 @@ printed vertically,  header left,  value right,  aligned by  the field
 widths. Here's an example:
 .PP
 .Vb 6
-\&    kubectl get pods | ./tablizer \-o extended
+\&    > kubectl get pods | ./tablizer \-o extended
 \&        NAME: repldepl\-7bcd8d5b64\-7zq4l  
 \&       READY: 1/1    
 \&      STATUS: Running  
@@ -345,7 +540,7 @@ by the shell,  it prints variable assignments for each  cell, one line
 per row:
 .PP
 .Vb 4
-\&    kubectl get pods | ./tablizer \-o extended ./tablizer \-o shell
+\&    > kubectl get pods | ./tablizer \-o extended ./tablizer \-o shell
 \&    NAME="repldepl\-7bcd8d5b64\-7zq4l" READY="1/1" STATUS="Running" RESTARTS="9 (47m ago)" AGE="4d23h" 
 \&    NAME="repldepl\-7bcd8d5b64\-m48n8" READY="1/1" STATUS="Running" RESTARTS="9 (47m ago)" AGE="4d23h" 
 \&    NAME="repldepl\-7bcd8d5b64\-q2bf4" READY="1/1" STATUS="Running" RESTARTS="9 (47m ago)" AGE="4d23h"
@@ -356,15 +551,43 @@ You can use this in an eval loop.
 Beside normal  ascii mode  (the default) and  extended mode  there are
 more output modes available: \fBorgtbl\fR  which prints an Emacs org-mode
 table and  \fBmarkdown\fR which prints  a Markdown table,  \fByaml\fR, which
-prints  yaml encoding  and \s-1CSV\s0  mode, which  prints a  comma separated
+prints  yaml encoding  and \fB\s-1CSV\s0\fR  mode, which  prints a  comma separated
 value file.
+.PP
+A special output mode ist the \fBTemplate\fR mode, activated with the
+option \f(CW\*(C`\-\-template\*(C'\fR. Template language is the Golang template
+language: <https://pkg.go.dev/text/template>. You can also use lot's
+of additional functions from:
+<https://masterminds.github.io/sprig/>. Here's an example:
+.PP
+.Vb 3
+\&    > kubectl get pods | tablizer \-\-template "{{.name}} is {{.status}}"
+\&    alertmanager\-kube\-prometheus\-alertmanager\-0 is Running
+\&    grafana\-fcc54cbc9\-bk7s8 is Running
+.Ve
+.PP
+You can use header names as variables.
+.SS "\s-1PUT FIELDS TO CLIPBOARD\s0"
+.IX Subsection "PUT FIELDS TO CLIPBOARD"
+You can let tablizer put fields to the clipboard using the option
+\&\f(CW\*(C`\-y\*(C'\fR. This best fits the use-case when the result of your filtering
+yields just one row. For example:
+.PP
+.Vb 1
+\&    cloudctl cluster ls | tablizer \-yid matchbox
+.Ve
+.PP
+If \*(L"matchbox\*(R" matches one cluster, you can immediately use the id of
+that cluster somewhere else and paste it. Of course, if there are
+multiple matches, then all id's will be put into the clipboard
+separated by one space.
 .SS "\s-1ENVIRONMENT VARIABLES\s0"
 .IX Subsection "ENVIRONMENT VARIABLES"
 \&\fBtablizer\fR supports  certain environment variables which  use can use
 to  influence   program  behavior.   Commandline  flags   have  always
 precedence over environment variables.
-.IP "<T_NO_HEADER_NUMBERING> \- disable numbering of header fields, like \fB\-n\fR." 4
-.IX Item "<T_NO_HEADER_NUMBERING> - disable numbering of header fields, like -n."
+.IP "<T_HEADER_NUMBERING> \- enable numbering of header fields, like \fB\-n\fR." 4
+.IX Item "<T_HEADER_NUMBERING> - enable numbering of header fields, like -n."
 .PD 0
 .IP "<T_COLUMNS> \- comma separated list of columns to output, like \fB\-c\fR" 4
 .IX Item "<T_COLUMNS> - comma separated list of columns to output, like -c"
@@ -433,16 +656,48 @@ To load completions for every new session, run:
 .Ve
 .Sp
 and source this file from your PowerShell profile.
+.SH "CONFIGURATION AND COLORS"
+.IX Header "CONFIGURATION AND COLORS"
+YOu can put certain configuration values into a configuration file in
+\&\s-1HCL\s0 format. By default tablizer looks for
+\&\f(CW\*(C`$HOME/.config/tablizer/config\*(C'\fR, but you can provide one using the
+parameter \f(CW\*(C`\-f\*(C'\fR.
+.PP
+In the configuration the following variables can be defined:
+.PP
+.Vb 8
+\&    BG             = "lightGreen"
+\&    FG             = "white"
+\&    HighlightBG    = "lightGreen"
+\&    HighlightFG    = "white"
+\&    NoHighlightBG  = "white"
+\&    NoHighlightFG  = "lightGreen"
+\&    HighlightHdrBG = "red"
+\&    HighlightHdrFG = "white"
+.Ve
+.PP
+The following color definitions are available:
+.PP
+black, blue,  cyan, darkGray, default, green,  lightBlue, lightCyan,
+lightGreen,   lightMagenta,   lightRed,   lightWhite,   lightYellow,
+magenta, red, white, yellow
+.PP
+The Variables \fB\s-1FG\s0\fR and \fB\s-1BG\s0\fR are being used to highlight matches. The
+other *FG and *BG variables are for colored table output (enabled with
+the \f(CW\*(C`\-L\*(C'\fR parameter).
+.PP
+Colorization can be turned off completely either by setting the
+parameter \f(CW\*(C`\-N\*(C'\fR or the environment variable \fB\s-1NO_COLOR\s0\fR to a true value.
 .SH "BUGS"
 .IX Header "BUGS"
 In order to report a bug, unexpected behavior, feature requests
 or to submit a patch, please open an issue on github:
-<https://github.com/TLINDEN/tablizer/issues>.
+<https://codeberg.org/scip/tablizer/issues>.
 .SH "LICENSE"
 .IX Header "LICENSE"
 This software is licensed under the \s-1GNU GENERAL PUBLIC LICENSE\s0 version 3.
 .PP
-Copyright (c) 2023 by Thomas von Dein
+Copyright (c) 2022\-2024 by Thomas von Dein
 .PP
 This software uses the following \s-1GO\s0 modules:
 .IP "repr (https://github.com/alecthomas/repr)" 4
@@ -463,6 +718,9 @@ Released under the \s-1MIT\s0 License, Copyright (c) 201 by Oleku Konko
 .IP "yaml (gopkg.in/yaml.v3)" 4
 .IX Item "yaml (gopkg.in/yaml.v3)"
 Released under the \s-1MIT\s0 License, Copyright (c) 2006\-2011 Kirill Simonov
+.IP "bubble-table (https://github.com/Evertras/bubble\-table)" 4
+.IX Item "bubble-table (https://github.com/Evertras/bubble-table)"
+Released under the \s-1MIT\s0 License, Copyright (c) 2022 Brandon Fulljames
 .SH "AUTHORS"
 .IX Header "AUTHORS"
 Thomas von Dein \fBtom \s-1AT\s0 vondein \s-1DOT\s0 org\fR
--- a/tablizer.pod
+++ b/tablizer.pod
@@ -5,37 +5,54 @@ tablizer - Manipulate tabular output of other programs
 =head1 SYNOPSIS

    Usage:
-      tablizer [regex] [file, ...] [flags]
+      tablizer [regex,...] [-r file] [flags]
    
    Operational Flags:
-      -c, --columns string     Only show the speficied columns (separated by ,)
-      -v, --invert-match       select non-matching rows
-      -n, --no-numbering       Disable header numbering
-      -N, --no-color           Disable pattern highlighting
-      -s, --separator string   Custom field separator
-      -k, --sort-by int        Sort by column (default: 1)
+      -c, --columns string               Only show the speficied columns (separated by ,)
+      -v, --invert-match                 select non-matching rows
+      -n, --numbering                    Enable header numbering
+      -N, --no-color                     Disable pattern highlighting
+      -H, --no-headers                   Disable headers display
+      -s, --separator <string>           Custom field separator (maybe char, string or :class:)
+      -k, --sort-by <int|name>           Sort by column (default: 1)
+      -z, --fuzzy                        Use fuzzy search [experimental]
+      -F, --filter <field[!]=reg>        Filter given field with regex, can be used multiple times
+      -T, --transpose-columns string     Transpose the speficied columns (separated by ,)
+      -R, --regex-transposer </from/to/> Apply /search/replace/ regexp to fields given in -T
+      -j, --json                         Read JSON input (must be array of hashes)
+      -I, --interactive                  Interactively filter and select rows
+      -g, --auto-headers                 Generate headers if there are none present in input
+      -x, --custom-headers a,b,...       Use custom headers, separated by comma

    Output Flags (mutually exclusive):
-      -X, --extended           Enable extended output
-      -M, --markdown           Enable markdown table output
-      -O, --orgtbl             Enable org-mode table output
-      -S, --shell              Enable shell evaluable ouput
-      -Y, --yaml               Enable yaml output
-      -C, --csv                Enable CSV output
-      -A, --ascii              Default output mode, ascii tabular
+      -X, --extended                     Enable extended output
+      -M, --markdown                     Enable markdown table output
+      -O, --orgtbl                       Enable org-mode table output
+      -S, --shell                        Enable shell evaluable output
+      -Y, --yaml                         Enable yaml output
+      -J, --jsonout                      Enable JSON output
+      -C, --csv                          Enable CSV output
+      -A, --ascii                        Default output mode, ascii tabular
+      -P, --template <tpl>               Enable template mode with template <tpl>
+      -L, --hightlight-lines             Use alternating background colors for tables
+      -o, --ofs <char>                   Output field separator, used by -A and -C. 
+      -y, --yank-columns                 Yank specified columns (separated by ,) to clipboard,
+                                         space separated

    Sort Mode Flags (mutually exclusive):
-      -a, --sort-age           sort according to age (duration) string
-      -D, --sort-desc          Sort in descending order (default: ascending)
-      -i, --sort-numeric       sort according to string numerical value
-      -t, --sort-time          sort according to time string
+      -a, --sort-age                     sort according to age (duration) string
+      -D, --sort-desc                    Sort in descending order (default: ascending)
+      -i, --sort-numeric                 sort according to string numerical value
+      -t, --sort-time                    sort according to time string

    Other Flags:
-          --completion <shell> Generate the autocompletion script for <shell>
-      -d, --debug              Enable debugging
-      -h, --help               help for tablizer
-      -m, --man                Display manual page
-      -v, --version            Print program version
+      -r  --read-file <file>             Use <file> as input instead of STDIN
+          --completion <shell>           Generate the autocompletion script for <shell>
+      -f, --config <file>                Configuration file (default: ~/.config/tablizer/config)
+      -d, --debug                        Enable debugging
+      -h, --help                         help for tablizer
+      -m, --man                          Display manual page
+      -V, --version                      Print program version


 =head1 DESCRIPTION
@@ -64,41 +81,62 @@ may also  use the  B<-v> option  to exclude all  rows which  match the
 pattern. Hence:

   # read from STDIN
-   kubectl get pods | tablizer
+   > kubectl get pods | tablizer

   # read a file
-   tablizer filename
+   > tablizer -r filename

   # search for pattern in a file (works like grep)
-   tablizer regex filename
+   > tablizer regex -r filename

   # search for pattern in STDIN
-   kubectl get pods | tablizer regex
+   > kubectl get pods | tablizer regex

-The output  looks like the  original one  but every header  field will
-have a numer associated with it, e.g.:
+The output looks like the original  one. You can add the option B<-n>,
+then every header field will have a numer associated with it, e.g.:

   NAME(1) READY(2) STATUS(3) RESTARTS(4) AGE(5)

 These numbers denote the column and  you can use them to specify which
 columns you want to have in your output (see L<COLUMNS>:

-   kubectl get pods | tablizer -c1,3
+   > kubectl get pods | tablizer -c1,3

 You can specify the numbers in any order but output will always follow
 the original order.

-The numbering can be suppressed by using the B<-n> option.
+However, you may also just use the header names instead of numbers,
+eg:
+
+   > kubectl get pods | tablizer -cname,status
+
+You can also use regular expressions with B<-c>, eg:
+
+   > kubectl get pods | tablizer -c '[ae]'  
+
+By  default tablizer  shows  a  header containing  the  names of  each
+column.  This can  be disabled using the B<-H> option.   Be aware that
+this only affects tabular output modes.  Shell, Extended, Yaml and CSV
+output modes always use the column names.

 By  default, if  a  B<pattern>  has been  speficied,  matches will  be
 highlighted. You can disable this behavior with the B<-N> option.

 Use the  B<-k> option to specify  by which column to  sort the tabular
-data (as in GNU sort(1)). The default sort column is the first one. To
-disable sorting at all, supply 0  (Zero) to -k. The default sort order
-is ascending. You can change this to descending order using the option
-B<-D>. The default  sort order is by string, but  there are other sort
-modes:
+data  (as in  GNU  sort(1)).  The default  sort  column  is the  first
+one. You can specify column numbers or names. Column numbers start
+with 1, names are case insensitive. You can specify multiple columns
+separated by comma to sort, but the type must be the same. For example
+if you want to sort numerically, all columns must be numbers. If you
+use column numbers, then be aware, that these are the numbers before
+column extraction. For example if you have a table with 4 columns and
+specify C<-c4>, then only 1 column (the fourth) will be printed,
+however if you want to sort by this column, you'll have to specify
+C<-k4>.
+
+The default  sort order  is ascending.  You can  change this  to
+descending order using the option B<-D>.  The default sort order is by
+alphanumeric string, but there are other sort modes:

 =over

@@ -119,33 +157,136 @@ Sorts timestamps.
 Finally the  B<-d> option  enables debugging  output which  is mostly
 useful for the developer.

-=head2 PATTERNS
+=head2 SEPARATOR

-You can reduce the rows being  displayed by using a regular expression
-pattern.  The  regexp is  PCRE compatible, refer  to the  syntax cheat
-sheet here: L<https://github.com/google/re2/wiki/Syntax>.  If you want
-to read  a more comprehensive  documentation about the topic  and have
-perl installed you can read it with:
+The option B<-s> can be a single character, in which case the CSV
+parser will be invoked. You can also specify a string as
+separator. The string will be interpreted as literal string unless it
+is a valid go regular expression. For example:
+
+    -s '\t{2,}\'
+
+is being used as a regexp and will match two or more consecutive tabs.
+
+    -s 'foo'
+
+on the other hand is no regular expression and will be used literally.
+
+To make live easier, there are a couple of predefined regular
+expressions, which you can specify as classes:
+
+=over
+
+* 		:tab:      
+
+Matches a tab and eats spaces around it.
+
+*		:spaces:
+
+Matches 2 or more spaces.
+
+*		:pipe:
+
+Matches a pipe character and eats spaces around it.
+
+*		:default:
+
+Matches 2 or more spaces or tab. This is the default separator if none
+is specified.
+
+*		:nonword:
+
+Matches a non-word character.
+
+*		:nondigit:
+
+Matches a non-digit character.
+
+*		:special:
+
+Matches one or more special chars like brackets, dollar sign, slashes etc.
+
+*		:nonprint:
+
+Matches one or more non-printable characters.
+
+
+=back
+
+=head2 PATTERNS AND FILTERING
+
+You can reduce  the rows being displayed by using  one or more regular
+expression patterns.   The regexp  language being used  is the  one of
+GOLANG,     refer    to     the    syntax     cheat    sheet     here:
+L<https://pkg.go.dev/regexp/syntax>.
+
+If you  want to  read a more  comprehensive documentation  about the
+topic and have perl installed you can read it with:

    perldoc perlre

-Or read it online: L<https://perldoc.perl.org/perlre>.
+Or read it online: L<https://perldoc.perl.org/perlre>. But please note
+that the GO regexp engine does NOT support all perl regex terms,
+especially look-ahead and look-behind.

-A note on  modifiers: the regexp engine used in  tablizer uses another
-modifier syntax:
+If you want to supply flags to a regex, then surround it with slashes
+and append the flag. The following flags are supported:

-    (?MODIFIER)
-
-The most important modifiers are:
-
-C<i> ignore case
-C<m> multiline mode
-C<s> single line mode
+    i => case insensitive
+    ! => negative match

 Example for a case insensitive search:

-    kubectl get pods -A | tablizer "(?i)account"
+    > kubectl get pods -A | tablizer "/account/i"

+If you use the C<!> flag, then the regex match will be negated, that
+is, if a line in the input matches the given regex, but C<!> is
+supplied, tablizer will NOT include it in the output.
+
+For example, here we want to get all lines matching "foo" but not
+"bar":
+
+    cat table | tablizer foo '/bar/!'
+
+This would match a line "foo zorro" but not "foo bar".
+
+The flags can also be combined.
+
+You  can also use  the experimental  fuzzy search  feature by  providing the
+option B<-z>, in which case the  pattern is regarded as a fuzzy search
+term, not a regexp.
+
+Sometimes you want to  filter by one or more columns.  You can do that
+using the B<-F> option. The option can be specified multiple times and
+has the following format:
+
+    fieldname=regexp
+
+Fieldnames (== columns headers) are case insensitive.
+
+If you specify more than one filter, both filters have to match (AND
+operation).
+
+These field filters can also be negated:
+
+    fieldname!=regexp
+
+If the option B<-v> is specified, the filtering is inverted.
+
+=head2 INTERACTIVE FILTERING
+
+You can also use the interactive mode, enabled with C<-I> to filter
+and select rows. This mode is complementary, that is, other filter
+options are still being respected.
+
+To enter e filter, hit C</>, enter a filter string and finish with
+C<ENTER>. Use C<SPACE> to select/deselect rows, use C<a> to select all
+(visible) rows.
+
+Commit your selection with C<q>. The selected rows are being fed to
+the requested output mode as usual. Abort with C<CTRL-c>, in which
+case the results of the interactive mode are being ignored and all
+rows are being fed to output.

 =head2 COLUMNS

@@ -167,7 +308,7 @@ Lets take this table:

 We want to see only the CMD column and use a regex for this:

-    ps | tablizer -s '\s+' -c C
+    > ps | tablizer -s '\s+' -c C
    CMD(4)
    bash
    ps
@@ -176,6 +317,46 @@ We want to see only the CMD column and use a regex for this:

 where "C" is our regexp which matches CMD.

+If a column specifier doesn't look like a regular expression, matching
+against header  fields will  be case  insensitive. So,  if you  have a
+field with  the name C<ID> then  these will all match:  C<-c id>, C<-c
+Id>. The same rule applies to the options C<-T> and C<-F>.
+
+
+=head2 TRANSPOSE FIELDS USING REGEXPS
+
+You can manipulate field contents using regular expressions. You have
+to tell tablizer which field[s] to operate on using the option C<-T>
+and the search/replace pattern using C<-R>. The number of columns and
+patterns must match.
+
+A search/replace pattern consists of the following elements:
+
+    /search-regexp/replace-string/
+
+The separator can be any valid character. Especially if you want to
+use a regexp containing the C</> character, eg:
+
+    |search-regexp|replace-string|
+
+Example:
+    
+    > cat t/testtable2
+    NAME  DURATION
+    x     10
+    a     100
+    z     0
+    u     4
+    k     6
+    
+    > cat t/testtable2 | tablizer -T2 -R '/^\d/4/' -n
+    NAME    DURATION 
+    x       40      
+    a       400     
+    z       4       
+    u       4       
+    k       4  
+
 =head2 OUTPUT MODES

 There might be cases  when the tabular output of a  program is way too
@@ -185,7 +366,7 @@ useful which enables I<extended mode>. In  this mode, each row will be
 printed vertically,  header left,  value right,  aligned by  the field
 widths. Here's an example:

-    kubectl get pods | ./tablizer -o extended
+    > kubectl get pods | ./tablizer -o extended
        NAME: repldepl-7bcd8d5b64-7zq4l  
       READY: 1/1    
      STATUS: Running  
@@ -199,7 +380,7 @@ The option B<-o shell>  can be used if the output  has to be processed
 by the shell,  it prints variable assignments for each  cell, one line
 per row:

-    kubectl get pods | ./tablizer -o extended ./tablizer -o shell
+    > kubectl get pods | ./tablizer -o extended ./tablizer -o shell
    NAME="repldepl-7bcd8d5b64-7zq4l" READY="1/1" STATUS="Running" RESTARTS="9 (47m ago)" AGE="4d23h" 
    NAME="repldepl-7bcd8d5b64-m48n8" READY="1/1" STATUS="Running" RESTARTS="9 (47m ago)" AGE="4d23h" 
    NAME="repldepl-7bcd8d5b64-q2bf4" READY="1/1" STATUS="Running" RESTARTS="9 (47m ago)" AGE="4d23h" 
@@ -209,9 +390,35 @@ You can use this in an eval loop.
 Beside normal  ascii mode  (the default) and  extended mode  there are
 more output modes available: B<orgtbl>  which prints an Emacs org-mode
 table and  B<markdown> which prints  a Markdown table,  B<yaml>, which
-prints  yaml encoding  and CSV  mode, which  prints a  comma separated
+prints  yaml encoding  and B<CSV>  mode, which  prints a  comma separated
 value file.

+A special output mode ist the B<Template> mode, activated with the
+option C<--template>. Template language is the Golang template
+language: L<https://pkg.go.dev/text/template>. You can also use lot's
+of additional functions from:
+L<https://masterminds.github.io/sprig/>. Here's an example:
+
+    > kubectl get pods | tablizer --template "{{.name}} is {{.status}}"
+    alertmanager-kube-prometheus-alertmanager-0 is Running
+    grafana-fcc54cbc9-bk7s8 is Running
+
+
+You can use header names as variables.
+
+=head2 PUT FIELDS TO CLIPBOARD
+
+You can let tablizer put fields to the clipboard using the option
+C<-y>. This best fits the use-case when the result of your filtering
+yields just one row. For example:
+
+    cloudctl cluster ls | tablizer -yid matchbox
+
+If "matchbox" matches one cluster, you can immediately use the id of
+that cluster somewhere else and paste it. Of course, if there are
+multiple matches, then all id's will be put into the clipboard
+separated by one space.
+
 =head2 ENVIRONMENT VARIABLES

 B<tablizer> supports  certain environment variables which  use can use
@@ -220,7 +427,7 @@ precedence over environment variables.

 =over

-=item <T_NO_HEADER_NUMBERING> - disable numbering of header fields, like B<-n>.
+=item <T_HEADER_NUMBERING> - enable numbering of header fields, like B<-n>.

 =item <T_COLUMNS> - comma separated list of columns to output, like B<-c>

@@ -283,17 +490,50 @@ and source this file from your PowerShell profile.

 =back

+=head1 CONFIGURATION AND COLORS
+
+YOu can put certain configuration values into a configuration file in
+HCL format. By default tablizer looks for
+C<$HOME/.config/tablizer/config>, but you can provide one using the
+parameter C<-f>.
+
+In the configuration the following variables can be defined:
+
+    BG             = "lightGreen"
+    FG             = "white"
+    HighlightBG    = "lightGreen"
+    HighlightFG    = "white"
+    NoHighlightBG  = "white"
+    NoHighlightFG  = "lightGreen"
+    HighlightHdrBG = "red"
+    HighlightHdrFG = "white"
+
+The following color definitions are available:
+
+black, blue,  cyan, darkGray, default, green,  lightBlue, lightCyan,
+lightGreen,   lightMagenta,   lightRed,   lightWhite,   lightYellow,
+magenta, red, white, yellow
+
+The Variables B<FG> and B<BG> are being used to highlight matches. The
+other *FG and *BG variables are for colored table output (enabled with
+the C<-L> parameter).
+
+Colorization can be turned off completely either by setting the
+parameter C<-N> or the environment variable B<NO_COLOR> to a true value.
+
+
+
 =head1 BUGS

 In order to report a bug, unexpected behavior, feature requests
 or to submit a patch, please open an issue on github:
-L<https://github.com/TLINDEN/tablizer/issues>.
+L<https://codeberg.org/scip/tablizer/issues>.

 =head1 LICENSE

 This software is licensed under the GNU GENERAL PUBLIC LICENSE version 3.

-Copyright (c) 2023 by Thomas von Dein
+Copyright (c) 2022-2024 by Thomas von Dein

 This software uses the following GO modules:

@@ -323,6 +563,10 @@ Released under the MIT License, Copyright (c) 201 by Oleku Konko

 Released under the MIT License, Copyright (c) 2006-2011 Kirill Simonov

+=item bubble-table (https://github.com/Evertras/bubble-table)
+
+Released under the MIT License, Copyright (c) 2022 Brandon Fulljames
+
 =back

 =head1 AUTHORS
--- a/vhsdemo/Makefile
+++ b/vhsdemo/Makefile
@@ -0,0 +1,15 @@
+.PHONY: demo check clean-demo
+
+VHS  = vhs
+
+clean-demo:
+
+%.gif: %.tape
+	@echo "vhs $<"
+	env PATH=..:$(PATH) vhs $<
+
+check:
+	ls -l ../tablizer
+
+demo: check clean-demo demo.gif
+
--- a/vhsdemo/demo.gif
+++ b/vhsdemo/demo.gif
--- a/vhsdemo/demo.tape
+++ b/vhsdemo/demo.tape
@@ -0,0 +1,157 @@
+# -*-sh-*-
+
+Output demo.gif
+Set FontSize 20
+Set Width 1200
+Set Height 1000
+Set Theme { "name": "Whimsy", "black": "#535178", "red": "#ef6487", "green": "#5eca89", "yellow": "#fdd877", "blue": "#65aef7", "magenta": "#aa7ff0", "cyan": "#43c1be", "white": "#ffffff", "brightBlack": "#535178", "brightRed": "#ef6487", "brightGreen": "#5eca89", "brightYellow": "#fdd877", "brightBlue": "#65aef7", "brightMagenta": "#aa7ff0", "brightCyan": "#43c1be", "brightWhite": "#ffffff", "background": "#29283b", "foreground": "#b3b0d6", "selection": "#3d3c58", "cursor": "#b3b0d6" }
+Set WindowBar Colorful
+Set BorderRadius 10
+Set Shell zsh
+Set FontFamily "IBM Plex Mono"
+Set CursorBlink false
+Set PlaybackSpeed 1
+Set TypingSpeed .05
+
+# initialize
+Hide
+Type `PROMPT=''`
+Enter
+Type "setopt interactivecomments"
+Enter
+Type "autoload -U colors && colors"
+Enter
+Type `PS1="%{$fg[magenta]%}demo> %{$reset_color%}"`
+Enter
+Type "clear"
+Enter
+Show
+
+Type "# Our input data"
+Enter
+Sleep 1s
+Type "cat input | head -10"
+Enter
+Sleep 2s
+
+Enter
+Type "# Filter over all rows"
+Enter
+Sleep 1s
+Type "tablizer Central < input"
+Enter
+Sleep 2s
+
+Enter
+Type "# Filter over all rows case insensitive"
+Enter
+Sleep 1s
+Type "tablizer '/penc/i' < input"
+Enter
+Sleep 2s
+
+Enter
+Type "# Filter over specific column"
+Enter
+Sleep 1s
+Type "tablizer -Fcost=4.99 < input"
+Enter
+Sleep 2s
+
+Enter
+Type "# Filter by regex on specific column"
+Enter
+Sleep 1s
+Type "tablizer -Funits=Pen. < input"
+Enter
+Sleep 2s
+
+Enter
+Type "# Output as markdown"
+Enter
+Sleep 1s
+Type "tablizer -Funits=Pen. -M < input"
+Enter
+Sleep 2s
+
+Enter
+Type "# Output as CSV"
+Enter
+Sleep 1s
+Type "tablizer -Funits=Pen. -C < input"
+Enter
+Sleep 2s
+
+Enter
+Type "# Output as shell evaluable"
+Enter
+Sleep 1s
+Type "tablizer -Funits=Pen. -S < input"
+Enter
+Sleep 2s
+Type "bat eval.sh"
+Enter
+Sleep 2s
+Type "tablizer -Funits=Pen. -S < input | ./eval.sh"
+Enter
+Sleep 2s
+
+Enter
+Type "# Reduce columns"
+Enter
+Sleep 1s
+Type "tablizer -Funits=Pen. -c region,customer,units,count < input"
+Enter
+Sleep 2s
+
+Enter
+Type "# Sort by COUNT column numerically "
+Enter
+Sleep 1s
+Type "tablizer -Funits=Pen. -c region,customer,units,count -kcount -i < input"
+Enter
+Sleep 2s
+
+Enter
+Type "# Do further filtering interactively"
+Enter
+Sleep 1s
+Type "tablizer -Funits=Pen. -c region,customer,units,count -I -O < input"
+Enter
+Sleep 2s
+Type "?"
+Sleep 2s
+Type "/"
+Sleep 2s
+Type "J"
+Sleep 1s
+Type "o"
+Sleep 1s
+Type "n"
+Sleep 1s
+Type "e"
+Sleep 1s
+Type "s"
+Sleep 1s
+Enter
+Sleep 2s
+Tab
+Sleep 1s
+Tab
+Sleep 1s
+Tab
+Sleep 1s
+Tab
+Type "n"
+Sleep 2s
+Space
+Sleep 1s
+Down
+Sleep 1s
+Down
+Sleep 1s
+Space
+Sleep 2s
+Type "q"
+
+Sleep 10s
--- a/vhsdemo/eval.sh
+++ b/vhsdemo/eval.sh
@@ -0,0 +1,5 @@
+#!/bin/sh
+
+while read LINE; do
+    eval "$LINE"; echo "$Customer ordered $Count ${Units}s"
+done
--- a/vhsdemo/input
+++ b/vhsdemo/input
@@ -0,0 +1,44 @@
+Date        Region	Customer	Units	Count   Cost	Total
+2016-01-06	East	Jones	Pencil	95	1.99	189.05
+2016-01-23	Central	Kivell	Binder	50	19.99	999.50
+2016-02-09	Central	Jardine	Pencil	36	4.99	179.64
+2016-02-26	Central	Gill	Pen	27	19.99	539.73
+2016-03-15	West	Sorvino	Pencil	56	2.99	167.44
+2016-04-01	East	Jones	Binder	60	4.99	299.40
+2016-04-18	Central	Andrews	Pencil	75	1.99	149.25
+2016-05-05	Central	Jardine	Pencil	90	4.99	449.10
+2016-05-22	West	Thompson	Pencil	32	1.99	63.68
+2016-06-08	East	Jones	Binder	60	8.99	539.40
+2016-06-25	Central	Morgan	Pencil	90	4.99	449.10
+2016-07-12	East	Howard	Binder	29	1.99	57.71
+2016-07-29	East	Parent	Binder	81	19.99	1619.19
+2016-08-15	East	Jones	Pencil	35	4.99	174.65
+2016-09-01	Central	Smith	Desk	2	125.00	250.00
+2016-09-18	East	Jones	Pen Set	16	15.99	255.84
+2016-10-05	Central	Morgan	Binder	28	8.99	251.72
+2016-10-22	East	Jones	Pen	64	8.99	575.36
+2016-11-08	East	Parent	Pen	15	19.99	299.85
+2016-11-25	Central	Kivell	Pen Set	96	4.99	479.04
+2016-12-12	Central	Smith	Pencil	67	1.29	86.43
+2016-12-29	East	Parent	Pen Set	74	15.99	1183.26
+2017-01-15	Central	Gill	Binder	46	8.99	413.54
+2017-02-01	Central	Smith	Binder	87	15.00	1305.00
+2017-02-18	East	Jones	Binder	4	4.99	19.96
+2017-03-07	West	Sorvino	Binder	7	19.99	139.93
+2017-03-24	Central	Jardine	Pen Set	50	4.99	249.50
+2017-04-10	Central	Andrews	Pencil	66	1.99	131.34
+2017-04-27	East	Howard	Pen	96	4.99	479.04
+2017-05-14	Central	Gill	Pencil	53	1.29	68.37
+2017-05-31	Central	Gill	Binder	80	8.99	719.20
+2017-06-17	Central	Kivell	Desk	5	125.00	625.00
+2017-07-04	East	Jones	Pen Set	62	4.99	309.38
+2017-07-21	Central	Morgan	Pen Set	55	12.49	686.95
+2017-08-07	Central	Kivell	Pen Set	42	23.95	1005.90
+2017-08-24	West	Sorvino	Desk	3	275.00	825.00
+2017-09-10	Central	Gill	Pencil	7	1.29	9.03
+2017-09-27	West	Sorvino	Pen	76	1.99	151.24
+2017-10-14	West	Thompson	Binder	57	19.99	1139.43
+2017-10-31	Central	Andrews	Pencil	14	1.29	18.06
+2017-11-17	Central	Jardine	Binder	11	4.99	54.89
+2017-12-04	Central	Jardine	Binder	94	19.99	1879.06
+2017-12-21	Central	Andrews	Binder	28	4.99	139.72
Author	SHA1	Message	Date
Thomas von Dein	fe351116d6	fix linter error	2025-12-08 21:57:30 +01:00
Thomas von Dein	db35d08385	add template output mode	2025-12-08 21:53:44 +01:00
Thomas von Dein	2bb0cdb0af	fix link	2025-11-05 09:00:28 +01:00
Thomas von Dein	fad8a59023	fix changelog link	2025-11-05 08:46:56 +01:00
T. von Dein	bd5ee90324	move to codeberg (#45 )	2025-11-03 22:06:11 +01:00
Thomas von Dein	bc717baa3f	fix typo	2025-10-25 21:51:56 +02:00
Thomas von Dein	c34f030914	add stew	2025-10-25 21:50:31 +02:00
T.v.Dein	f1aa9d0000	add json output mode (-J) (#87 )	2025-10-14 07:18:30 +02:00
Thomas von Dein	736dd37f16	fixed feature entry	2025-10-13 07:24:35 +02:00
Thomas von Dein	e0dc6bb845	updated and added feature list	2025-10-13 07:23:54 +02:00
T.v.Dein	8bdb3db105	fix #85 : add --auto-headers and --custom-headers (#86 )	2025-10-10 13:08:16 +02:00
Thomas von Dein	4ce6c30f54	fix short usage formatting	2025-10-09 23:16:07 +02:00
T.v.Dein	ec0b210167	add some handy builtin character classes as split separators (#84 )	2025-10-09 23:03:57 +02:00
Thomas von Dein	253ef8262e	fix builder go version	2025-10-08 10:36:09 +02:00
Thomas von Dein	da48994744	fix comment	2025-10-06 23:27:48 +02:00
Thomas von Dein	39f06fddc8	md fix	2025-10-06 23:02:28 +02:00
T.v.Dein	50a9378d92	use column order of -c when specified (#81 )	2025-10-06 22:55:04 +02:00
T.v.Dein	35b726fee4	Fix json parser (#80 ) * fix #77: parse floats and nils as well and convert them to string	2025-10-06 22:54:31 +02:00
T.v.Dein	8c87da34f2	show short help with -h (#76 )	2025-10-02 21:34:38 +02:00
dependabot[bot]	6f0f5afb27	Bump actions/setup-go from 5 to 6 (#68 )	2025-10-01 21:16:48 +02:00
T.v.Dein	62b606e7da	use 1.24 for CI (#75 )	2025-10-01 21:14:18 +02:00
dependabot[bot]	567d23b175	Bump github.com/alecthomas/repr from 0.5.1 to 0.5.2 (#69 )	2025-10-01 21:08:36 +02:00
dependabot[bot]	14f24533f0	Bump github.com/spf13/cobra from 1.9.1 to 1.10.1 (#70 )	2025-10-01 21:04:25 +02:00
dependabot[bot]	4e413c02b5	Bump github.com/charmbracelet/bubbletea from 1.3.6 to 1.3.10 (#71 )	2025-10-01 21:01:04 +02:00
dependabot[bot]	6d8c0c0936	Bump github.com/evertras/bubble-table from 0.19.0 to 0.19.2 (#72 )	2025-10-01 20:57:58 +02:00
dependabot[bot]	21b607af7c	Bump github.com/olekukonko/tablewriter from 1.0.9 to 1.1.0 (#73 )	2025-10-01 20:54:31 +02:00
T.v.Dein	06a5d74fb6	Add JSON input support (#74 ) * added basic json input support * add coverage to make test * enhanced unit tests, switch to testify/assert * reduce ci runs	2025-10-01 20:48:49 +02:00
T.v.Dein	5f3f7c417c	Improve ascii table, add --ofs flag, enhance documentation (#67 ) * enhanced documentation * added --ofs parameter use 2 spaces for ascii output but it is customizable with --ofs, which is also being used by CSV mode (whose defaults remains unchanged) * improve ascii table output, use 2 spaces as OFS by default	2025-09-30 11:21:49 +02:00
T.v.Dein	687f4b7bb2	Fix excess spaces on normal ascii table output (#66 )	2025-09-29 20:46:33 +02:00
Thomas von Dein	24b66b8a6b	mv demo to top	2025-09-11 19:12:49 +02:00
Thomas von Dein	d87c6878a4	bump version	2025-09-11 19:04:38 +02:00
Thomas von Dein	4cdc4c8e18	switched to vhs demo creator	2025-09-11 19:04:02 +02:00
Thomas von Dein	9cb9a66332	fix #64 : documented -r parameter	2025-09-11 19:01:11 +02:00
Thomas von Dein	24277cd716	use stdout if it is a tty	2025-09-11 19:00:37 +02:00
Thomas von Dein	e51b141032	bump version	2025-09-10 12:17:09 +02:00
Thomas von Dein	7af7304529	header cosmetics	2025-09-10 12:16:53 +02:00
Thomas von Dein	b4c833a0ba	also style selected row	2025-09-10 12:13:34 +02:00
Thomas von Dein	1c36d93d65	add gh-dash config	2025-09-09 22:06:07 +02:00
T.v.Dein	ec864f42d6	added styled help buffer (#63 )	2025-09-09 22:01:45 +02:00
dependabot[bot]	4eaa676510	Bump github.com/gookit/color from 1.5.4 to 1.6.0 (#60 )	2025-09-09 20:36:44 +02:00
dependabot[bot]	c600fb1136	Bump actions/checkout from 4 to 5 (#59 )	2025-09-09 20:10:03 +02:00
dependabot[bot]	abf9fac5c7	Bump github.com/charmbracelet/bubbletea from 1.3.4 to 1.3.6 (#61 )	2025-09-09 20:09:35 +02:00
T.v.Dein	80dd6849ae	Add interactive filter table (#62 )	2025-09-09 20:09:08 +02:00
Thomas von Dein	e2b82515f5	bump version	2025-08-28 21:09:32 +02:00
T.v.Dein	1976b4046e	Add interactive filter/selection tool (#58 )	2025-08-28 21:08:28 +02:00
dependabot[bot]	b1a2b3059e	Bump github.com/alecthomas/repr from 0.4.0 to 0.5.1 (#55 )	2025-08-26 10:44:10 +02:00
dependabot[bot]	e3d6ef130c	Bump github.com/hashicorp/hcl/v2 from 2.23.0 to 2.24.0 (#56 )	2025-08-26 10:34:24 +02:00
dependabot[bot]	92fffaae9a	Bump github.com/olekukonko/tablewriter from 1.0.6 to 1.0.9 (#54 )	2025-08-26 10:28:54 +02:00
T.v.Dein	f1c5ee5797	replace pipe to less with bubbletea internal pager (#57 )	2025-08-26 10:22:03 +02:00
T.v.Dein	5168b04339	optimize ascii tables, use custom style instead of tab inserters (#53 ) * optimize ascii tables, use custom style instead of tab inserters	2025-06-10 16:12:03 +02:00
T.v.Dein	787178b17e	Update to tableWriter 1.0.6 (#50 )	2025-05-27 13:09:18 +02:00
T.v.Dein	eae39bbff1	Merge pull request #48 from TLINDEN/updatego update to go1.23, update dependencies	2025-03-06 17:28:42 +01:00
Thomas von Dein	40fbf17779	also update ci to go 1.23	2025-03-06 17:25:54 +01:00
Thomas von Dein	832841c1ff	deprecate testscript.RunMain()	2025-03-06 17:24:16 +01:00
Thomas von Dein	5726ed3f7f	update to go1.23, update dependencies	2025-03-06 17:16:20 +01:00
T.v.Dein	5e52cd9ce0	Merge pull request #45 from TLINDEN/dependabot/go_modules/github.com/spf13/cobra-1.9.1 Bump github.com/spf13/cobra from 1.8.1 to 1.9.1	2025-03-06 17:11:24 +01:00
T.v.Dein	8c7c89c9ea	Merge pull request #47 from TLINDEN/headernumbers reverse the meaning of -n	2025-03-06 17:11:00 +01:00
Thomas von Dein	25aa172c41	reverse the meaning of -n, setting it enables numbered headers	2025-03-06 17:02:34 +01:00
dependabot[bot]	c436a92bcb	Bump github.com/spf13/cobra from 1.8.1 to 1.9.1 Bumps [github.com/spf13/cobra](https://github.com/spf13/cobra) from 1.8.1 to 1.9.1. - [Release notes](https://github.com/spf13/cobra/releases) - [Commits](https://github.com/spf13/cobra/compare/v1.8.1...v1.9.1) --- updated-dependencies: - dependency-name: github.com/spf13/cobra dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com>	2025-03-01 10:40:32 +00:00
T.v.Dein	65732a58d0	Merge pull request #38 from TLINDEN/feature/yank add yank support	2025-02-23 18:21:15 +01:00
T.v.Dein	ace7f76210	Merge branch 'main' into feature/yank	2025-02-23 18:09:04 +01:00
Thomas von Dein	fda365bd8b	bump version	2025-02-23 18:06:42 +01:00
Thomas von Dein	c1cfc08c23	fix windows test, add clean to test target	2025-02-23 18:02:52 +01:00
Thomas von Dein	150fdddd2a	use latest go-clipboard	2025-02-23 18:00:29 +01:00
Thomas von Dein	6b659773f1	build release bins w/o symbols and debug, +static	2025-02-19 18:09:05 +01:00
Thomas von Dein	74d82fa356	fix ci tests on windows: make clean before running test	2025-02-12 14:08:04 +01:00
Thomas von Dein	3949411c57	add change log generator, update release builder	2025-02-05 17:51:14 +01:00
Thomas von Dein	a455f6b79a	bump version	2025-01-30 17:31:56 +01:00
Thomas von Dein	2c08687c29	add support for negative filters (-F field!=regex)	2025-01-30 17:31:26 +01:00
Thomas von Dein	200f1f32f8	using patched tiagomeol/go-clipboard/clipboard, fixes #37	2025-01-28 14:40:17 +01:00
Thomas von Dein	768a19b4d6	fine tuning, added test, which hangs, but yanking works anyway	2025-01-23 13:59:02 +01:00
Thomas von Dein	dc718392b6	fix-import	2025-01-22 23:15:12 +01:00
Thomas von Dein	e8f4fef41c	fix #37 : make yank portable	2025-01-22 23:12:42 +01:00
Thomas von Dein	6566dd66f0	fixed pattern regex, fixed pattern AND operation	2025-01-22 17:53:10 +01:00
Thomas von Dein	1593799c03	added multi pattern tests	2025-01-22 17:53:10 +01:00
Thomas von Dein	ea3dd75fec	fix linting error	2025-01-22 17:53:10 +01:00
Thomas von Dein	a306f2c601	implement multiple regex support and icase and negate flags	2025-01-22 17:53:10 +01:00
Thomas von Dein	82f54c120d	catch err	2025-01-21 18:42:04 +01:00
T.v.Dein	2d5799e2f2	Use primary clipboard on unix	2025-01-20 21:27:26 +01:00
Thomas von Dein	8e33cadcaa	add -y	2025-01-20 19:28:19 +01:00
Thomas von Dein	03f3225f24	build release binaries using ci workflow	2025-01-18 10:51:28 +01:00
Thomas von Dein	63c7ef26b6	add -k<name> and sort by multiple columns support, fixes #34	2025-01-15 18:53:34 +01:00
dependabot[bot]	c2e7d8037a	Bump github.com/hashicorp/hcl/v2 from 2.22.0 to 2.23.0 Bumps [github.com/hashicorp/hcl/v2](https://github.com/hashicorp/hcl) from 2.22.0 to 2.23.0. - [Release notes](https://github.com/hashicorp/hcl/releases) - [Changelog](https://github.com/hashicorp/hcl/blob/main/CHANGELOG.md) - [Commits](https://github.com/hashicorp/hcl/compare/v2.22.0...v2.23.0) --- updated-dependencies: - dependency-name: github.com/hashicorp/hcl/v2 dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com>	2025-01-14 13:12:06 +01:00
Thomas von Dein	323c070caa	tests don't work on windows	2025-01-14 13:10:09 +01:00
Thomas von Dein	53cf1e2ebe	fix for windows	2025-01-14 13:10:09 +01:00
Thomas von Dein	16c5053752	satisfy linter	2025-01-14 13:10:09 +01:00
Thomas von Dein	7d2d9a55d3	added prior art, fixes #30 as well	2025-01-14 13:10:09 +01:00
Thomas von Dein	14c50b4e63	get rid of lisp interpreter, -R and -F are enough, fixes #30	2025-01-14 13:10:09 +01:00
Thomas von Dein	0e68dc585d	added testscript test to test the combination of all tasks	2025-01-14 13:10:09 +01:00
Thomas von Dein	6ca835add1	changed file handling, use -r <file> or nothing to use stdin	2025-01-14 13:10:09 +01:00
Thomas von Dein	306f583522	fixed transpose error message if count is incorrect	2025-01-14 13:10:09 +01:00
Thomas von Dein	9f971ed3b9	fix #32 : treat header filters case insensitively	2025-01-14 13:10:09 +01:00
Thomas von Dein	2ae2d2b33d	add transpose stuff to README, bump version	2025-01-14 13:10:09 +01:00
Thomas von Dein	cf1a555b9b	added tests, reorganized Parse() by dismantling parsing and processing	2025-01-14 13:10:09 +01:00
Thomas von Dein	4d894a728b	added transpose function (-T + -R)	2025-01-14 13:10:09 +01:00
Thomas von Dein	8792c5a40f	fix regex in example	2025-01-10 18:33:55 +01:00
Thomas von Dein	7ab1a1178a	add zygo reference	2025-01-10 18:27:41 +01:00
Thomas von Dein	1e44da4f6e	added documentation about current state of lisp support	2025-01-10 18:26:33 +01:00
Thomas von Dein	59171f0fab	bump versions	2024-12-13 10:37:44 +01:00
Thomas von Dein	8098ccf000	fix #29 : fix stat() error checking	2024-12-13 10:35:56 +01:00
Thomas von Dein	4dc87ac22e	fix #27 : check if parsed headers and columns match	2024-11-04 11:13:53 +01:00
Thomas von Dein	ef5211e45f	only works on 1.22	2024-09-27 11:15:23 +02:00
Thomas von Dein	1a80e72737	fix version quoting	2024-09-27 11:04:32 +02:00
Thomas von Dein	8e765b167f	ok, only test with 1.22.1	2024-09-25 18:55:04 +02:00
Thomas von Dein	30f4b67538	bump version and add current go versions for testing	2024-09-25 18:52:47 +02:00
Thomas von Dein	383b5db47e	try 1.22.1	2024-09-25 18:40:13 +02:00
Thomas von Dein	f7d812b372	try to quote go version	2024-09-25 18:38:06 +02:00
Thomas von Dein	480f5f617d	only try 1.20	2024-09-25 18:33:46 +02:00
Thomas von Dein	586e36c181	update to go 1.22	2024-09-25 18:24:35 +02:00
dependabot[bot]	13c789b800	Bump github.com/alecthomas/repr from 0.1.1 to 0.4.0 Bumps [github.com/alecthomas/repr](https://github.com/alecthomas/repr) from 0.1.1 to 0.4.0. - [Commits](https://github.com/alecthomas/repr/compare/v0.1.1...v0.4.0) --- updated-dependencies: - dependency-name: github.com/alecthomas/repr dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com>	2024-09-25 18:22:10 +02:00
dependabot[bot]	81e1394fd2	Bump github.com/gookit/color from 1.5.2 to 1.5.4 Bumps [github.com/gookit/color](https://github.com/gookit/color) from 1.5.2 to 1.5.4. - [Release notes](https://github.com/gookit/color/releases) - [Commits](https://github.com/gookit/color/compare/v1.5.2...v1.5.4) --- updated-dependencies: - dependency-name: github.com/gookit/color dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com>	2024-09-25 18:22:00 +02:00
dependabot[bot]	b8099fe389	Bump github.com/spf13/cobra from 1.6.1 to 1.8.1 Bumps [github.com/spf13/cobra](https://github.com/spf13/cobra) from 1.6.1 to 1.8.1. - [Release notes](https://github.com/spf13/cobra/releases) - [Commits](https://github.com/spf13/cobra/compare/v1.6.1...v1.8.1) --- updated-dependencies: - dependency-name: github.com/spf13/cobra dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com>	2024-09-25 18:21:46 +02:00
dependabot[bot]	1dc072aa67	Bump github.com/lithammer/fuzzysearch from 1.1.7 to 1.1.8 Bumps [github.com/lithammer/fuzzysearch](https://github.com/lithammer/fuzzysearch) from 1.1.7 to 1.1.8. - [Release notes](https://github.com/lithammer/fuzzysearch/releases) - [Commits](https://github.com/lithammer/fuzzysearch/compare/v1.1.7...v1.1.8) --- updated-dependencies: - dependency-name: github.com/lithammer/fuzzysearch dependency-type: direct:production update-type: version-update:semver-patch ... Signed-off-by: dependabot[bot] <support@github.com>	2024-09-25 18:21:23 +02:00
dependabot[bot]	d92f63ca30	Bump github.com/hashicorp/hcl/v2 from 2.19.1 to 2.22.0 Bumps [github.com/hashicorp/hcl/v2](https://github.com/hashicorp/hcl) from 2.19.1 to 2.22.0. - [Release notes](https://github.com/hashicorp/hcl/releases) - [Changelog](https://github.com/hashicorp/hcl/blob/main/CHANGELOG.md) - [Commits](https://github.com/hashicorp/hcl/compare/v2.19.1...v2.22.0) --- updated-dependencies: - dependency-name: github.com/hashicorp/hcl/v2 dependency-type: direct:production update-type: version-update:semver-minor ... Signed-off-by: dependabot[bot] <support@github.com>	2024-09-25 18:13:50 +02:00
Thomas von Dein	78ccb8f54b	use non format logger	2024-09-25 18:06:00 +02:00
Thomas von Dein	a29104aeab	fix typos in issue templates	2024-09-25 18:06:00 +02:00
dependabot[bot]	45d9e219a5	Bump golangci/golangci-lint-action from 3 to 6 Bumps [golangci/golangci-lint-action](https://github.com/golangci/golangci-lint-action) from 3 to 6. - [Release notes](https://github.com/golangci/golangci-lint-action/releases) - [Commits](https://github.com/golangci/golangci-lint-action/compare/v3...v6) --- updated-dependencies: - dependency-name: golangci/golangci-lint-action dependency-type: direct:production update-type: version-update:semver-major ... Signed-off-by: dependabot[bot] <support@github.com>	2024-09-25 16:40:10 +02:00
dependabot[bot]	3eda59beeb	Bump actions/checkout from 3 to 4 Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4. - [Release notes](https://github.com/actions/checkout/releases) - [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md) - [Commits](https://github.com/actions/checkout/compare/v3...v4) --- updated-dependencies: - dependency-name: actions/checkout dependency-type: direct:production update-type: version-update:semver-major ... Signed-off-by: dependabot[bot] <support@github.com>	2024-09-25 16:39:58 +02:00
dependabot[bot]	7ada75c1d6	Bump actions/setup-go from 3 to 5 Bumps [actions/setup-go](https://github.com/actions/setup-go) from 3 to 5. - [Release notes](https://github.com/actions/setup-go/releases) - [Commits](https://github.com/actions/setup-go/compare/v3...v5) --- updated-dependencies: - dependency-name: actions/setup-go dependency-type: direct:production update-type: version-update:semver-major ... Signed-off-by: dependabot[bot] <support@github.com>	2024-09-25 16:39:36 +02:00
Thomas von Dein	83d5628430	add dependabot config	2024-09-25 16:33:54 +02:00
Thomas von Dein	a9bb79b01c	merge corrections	2024-05-07 18:39:38 +02:00
Thomas von Dein	a718fa388d	Merge remote-tracking branch 'origin/development'	2024-05-07 18:29:01 +02:00
Thomas von Dein	473feff451	refactored and un-go-criticed	2024-05-07 18:01:12 +02:00
Thomas von Dein	9e2e45715e	added -F docs	2024-05-07 18:00:57 +02:00
Thomas von Dein	39609425e5	refactoring and gouncritic, 1st part	2024-05-07 15:19:54 +02:00
Thomas von Dein	ba2a2e8460	add -F filter by column flag (closes #13 )	2024-05-07 13:30:07 +02:00
Thomas von Dein	96f7881c16	fix #12 : only consider -v if there's a pattern, ignore it otherwise	2024-05-07 13:29:41 +02:00
T.v.Dein	6fccd1287b	Feature additions (#11 ) * add color table support (using alternating colorization of rows) using new flag `-L` * add config file support (HCL format) using `~/.config/tablizer/config` or `-f <file>` so the user can customize colors * removed golang 1.17 support	2023-11-22 14:16:43 +01:00
Thomas von Dein	0f22457961	remove go 1.17 support	2023-11-22 14:09:49 +01:00
Thomas von Dein	ddfbecaa35	+docs, try linter v1.18	2023-11-22 14:08:36 +01:00
Thomas von Dein	3632de10d7	try to fix linter	2023-11-22 13:57:57 +01:00
Thomas von Dein	76b98fb8ad	upd mods	2023-11-22 13:48:32 +01:00
Thomas von Dein	f045adf441	added config file support to set custom colors	2023-11-22 13:33:26 +01:00
Thomas von Dein	811173ddb4	fixed alternating highlighting, now looks reasonable	2023-11-22 10:30:40 +01:00
Thomas von Dein	3c910ca08f	works but is ugly :(	2023-11-21 17:41:04 +01:00
Thomas von Dein	a8c9ede77e	added -L flag to highligh lines in alternating bg color	2023-11-21 11:40:55 +01:00
T.v.Dein	9eadb941da	Release v1.0.17 (#9 ) * add shortcut -H to --no-headers, it's too cumbersome to type * added fuzzy search support * Added basic lisp plugin facilities * Lisp plugin Addidions: - added process hook facilities - added working example lisp plugin for filter hook - load-path can now be a file as well - added a couple of lisp helper functions (atoi, split), more may follow, see lisplib.go * linting fixes	2023-10-02 18:15:41 +02:00
T.v.Dein	93800f81c1	release v1.0.16 (#8 ) * add shortcut -H to --no-headers, it's too cumbersome to type * bump version * add -H to usage * re-generated --------- Co-authored-by: Thomas von Dein <tom@vondein.org>	2023-05-03 18:31:28 +02:00
T.v.Dein	a94a4fd5b0	Merge pull request #7 from TLINDEN/development added --no-headers flag to disable header display in tabular modes	2023-04-21 10:01:19 +02:00
Thomas von Dein	1acbdbc674	added --no-headers flag to disable header display in tabular modes	2023-04-21 09:52:05 +02:00
Thomas von Dein	195f685584	fix release maker	2023-01-23 13:40:50 +01:00