Use SIMD to replace C0 control codes in Go code

tools/highlight/api.go

@@ -3,9 +3,9 @@ package highlight
 import (
 	"errors"
 	"fmt"
-	"strings"
 
 	"github.com/alecthomas/chroma/v2"
+	"github.com/kovidgoyal/kitty/tools/utils"
 )
 
 var _ = fmt.Print
@@ -19,29 +19,6 @@ type StyleResolveData interface {
 	TextForPath(string) (string, error)
 }
 
-type SanitizeControlCodes struct {
-	r *strings.Replacer
-}
-
-func (s SanitizeControlCodes) Sanitize(x string) string { return s.r.Replace(x) }
-
-func NewSanitizeControlCodes(replace_tab_by string) *SanitizeControlCodes {
-	repls := make([]string, 0, 2*(0x1f+2+(0x9f-0x80+1)))
-	for i := range 0x1f + 1 {
-		var repl string
-		switch i {
-		case '\n', ' ':
-			repl = string(rune(i))
-		case '\t':
-			repl = replace_tab_by
-		default:
-			repl = string(rune(0x2400 + i))
-		}
-		repls = append(repls, string(rune(i)), repl)
-	}
-	return &SanitizeControlCodes{r: strings.NewReplacer(repls...)}
-}
-
 type Highlighter interface {
 	HighlightFile(path string, srd StyleResolveData) (highlighted_string string, err error)
 	Sanitize(string) string
@@ -49,8 +26,7 @@ type Highlighter interface {
 
 func NewHighlighter(sanitize func(string) string) Highlighter {
 	if sanitize == nil {
-		s := NewSanitizeControlCodes("    ")
-		sanitize = s.Sanitize
+		sanitize = func(text string) string { return utils.ReplaceControlCodes(text, "    ", "\n") }
 	}
 	return &highlighter{sanitize: sanitize, tokens_map: make(map[string][]chroma.Token)}
 }