show short help with -h (#76)

cfg/config.go

@@ -28,7 +28,7 @@ import (
 )
 
 const DefaultSeparator string = `(\s\s+|\t)`
-const Version string = "v1.5.6"
+const Version string = "v1.5.7"
 const MAXPARTS = 2
 
 var DefaultConfigfile = os.Getenv("HOME") + "/.config/tablizer/config"

cmd/root.go

@@ -20,6 +20,7 @@ import (
 	"errors"
 	"fmt"
 	"os"
+	"slices"
 	"strings"
 
 	"github.com/spf13/cobra"
@@ -187,6 +188,11 @@ func Execute() {
 
 	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)

cmd/shortusage.go

@@ -0,0 +1,16 @@
+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
+                                                   -d  debug
+-O org -C CSV -M md -X ext -S shell -Y yaml        -D  sort descending order
+-m  show manual       --help  show detailed help   -v  show version
+-a  sort by age       -i      sort numerically     -t  sort by time`

t/test-basics.txtar

@@ -1,7 +1,10 @@
 # usage
-exec tablizer -h
+exec tablizer --help
 stdout Usage
 
+exec tablizer -h
+stdout show
+
 # version
 exec tablizer -V
 stdout version