edit: Remove the need to sort []styled.

edit/navigation.go

@@ -4,6 +4,7 @@ import (
 	"errors"
 	"os"
 	"path"
+	"sort"
 	"strings"
 	"unicode/utf8"
 
@@ -307,19 +308,20 @@ func (n *navigation) loaddir(dir string) ([]styled, error) {
 	if err != nil {
 		return nil, err
 	}
-	infos, err := f.Readdir(0)
+	names, err := f.Readdirnames(-1)
 	if err != nil {
 		return nil, err
 	}
+	sort.Strings(names)
+
 	var all []styled
 	lsColor := getLsColor()
-	for _, info := range infos {
-		if n.showHidden || info.Name()[0] != '.' {
-			name := info.Name()
-			all = append(all, styled{name, stylesFromString(lsColor.getStyle(path.Join(dir, name)))})
+	for _, name := range names {
+		if n.showHidden || name[0] != '.' {
+			all = append(all, styled{name,
+				stylesFromString(lsColor.getStyle(path.Join(dir, name)))})
 		}
 	}
-	sortStyleds(all)
 
 	return all, nil
 }

edit/styled.go

@@ -1,8 +1,6 @@
 package edit
 
 import (
-	"sort"
-
 	"github.com/elves/elvish/eval"
 	"github.com/elves/elvish/parse"
 )
@@ -38,15 +36,3 @@ func styledBuiltin(ec *eval.EvalCtx, args []eval.Value, opts map[string]eval.Val
 	out := ec.OutputChan()
 	out <- &styled{text, stylesFromString(style)}
 }
-
-// Boilerplates for sorting.
-
-type styleds []styled
-
-func (s styleds) Len() int           { return len(s) }
-func (s styleds) Less(i, j int) bool { return s[i].text < s[j].text }
-func (s styleds) Swap(i, j int)      { s[i], s[j] = s[j], s[i] }
-
-func sortStyleds(s []styled) {
-	sort.Sort(styleds(s))
-}