get rid of utils.Cut since we can now rely on strings.Cut instead

tools/cli/completion-main.go

@@ -7,9 +7,9 @@ import (
 	"fmt"
 	"io"
 	"os"
+	"strings"
 
 	"kitty/tools/tty"
-	"kitty/tools/utils"
 )
 
 func debug(args ...any) {
@@ -81,7 +81,7 @@ func GenerateCompletions(args []string) error {
 	}
 	shell_state := make(map[string]string, n)
 	for _, arg := range args {
-		k, v, found := utils.Cut(arg, "=")
+		k, v, found := strings.Cut(arg, "=")
 		if !found {
 			return fmt.Errorf("Invalid shell state specification: %s", arg)
 		}

tools/cli/completion.go

@@ -36,7 +36,7 @@ func (self *MatchGroup) remove_common_prefix() string {
 			}
 		}
 	} else if len(self.Matches) > 1 && strings.HasPrefix(self.Matches[0].Word, "--") && strings.Contains(self.Matches[0].Word, "=") {
-		lcp, _, _ := utils.Cut(self.longest_common_prefix(), "=")
+		lcp, _, _ := strings.Cut(self.longest_common_prefix(), "=")
 		lcp += "="
 		if len(lcp) > 3 {
 			self.remove_prefix_from_all_matches(lcp)

tools/cli/zsh.go

@@ -76,7 +76,7 @@ func (self *Match) FormatForCompletionList(max_word_len int, f *markup.Context,
 		return word
 	}
 	word_len := wcswidth.Stringwidth(word)
-	line, _, _ := utils.Cut(strings.TrimSpace(desc), "\n")
+	line, _, _ := strings.Cut(strings.TrimSpace(desc), "\n")
 	desc = f.Prettify(line)
 
 	multiline := false