get rid of lisp interpreter, -R and -F are enough, fixes #30

lib/filter.go

@@ -19,7 +19,6 @@ package lib
 
 import (
 	"bufio"
-	"fmt"
 	"io"
 	"strings"
 
@@ -144,18 +143,6 @@ func FilterByPattern(conf cfg.Config, input io.Reader) (io.Reader, error) {
 				// so we ignore all lines, which DO match.
 				continue
 			}
-
-			// apply user defined lisp filters, if any
-			accept, err := RunFilterHooks(conf, line)
-			if err != nil {
-				return input, fmt.Errorf("failed to apply filter hook: %w", err)
-			}
-
-			if !accept {
-				//  IF there  are filter  hook[s] and  IF one  of them
-				// returns false on the current line, reject it
-				continue
-			}
 		}
 
 		lines = append(lines, line)