refactor: use slices.Clone and slices.Replace

editor/editor.go

@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"os"
 	"os/exec"
+	"slices"
 	"strings"
 	"text/template"
 
@@ -72,8 +73,7 @@ func (ed *editor) substituteArgs(result *lang.GenerateResult) ([]string, error)
 		TestCasesFile:   getPath(lang.TestCasesFile),
 	}
 
-	args := make([]string, len(ed.args))
-	copy(args, ed.args)
+	args := slices.Clone(ed.args)
 	for i, arg := range args {
 		if !strings.Contains(arg, "{{") {
 			continue
@@ -99,7 +99,7 @@ func (ed *editor) substituteArgs(result *lang.GenerateResult) ([]string, error)
 			for j, f := range result.Files {
 				allFiles[j] = f.GetPath()
 			}
-			args = append(args[:i], append(allFiles, args[i+1:]...)...)
+			args = slices.Replace(args, i, i+1, allFiles...)
 			break
 		}
 	}

scripts/update_readme.go

@@ -4,6 +4,7 @@ import (
 	"bytes"
 	"fmt"
 	"os"
+	"slices"
 	"strings"
 
 	"github.com/fatih/color"
@@ -33,10 +34,7 @@ func replace(mark string, origin []byte, new []byte) []byte {
 	endMark := fmt.Appendf(nil, "<!-- END %s -->", mark)
 	begin := bytes.Index(origin, beginMark) + len(beginMark)
 	end := bytes.Index(origin, endMark)
-	result := append([]byte(nil), origin[:begin]...)
-	result = append(result, new...)
-	result = append(result, origin[end:]...)
-	return result
+	return slices.Replace(origin, begin, end, new...)
 }
 
 func updateUsage(readme []byte) []byte {