sorting uses slices package

CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ## Unreleased
 
+- Add: sorting uses `slices` package.
+
 ## [v1.7.5] - 2023-09-26 Tue
 
 - Add: CSV and TSV files provide now verbatim authorship instead of normalized

ent/parser/output.go

@@ -1,7 +1,8 @@
 package parser
 
 import (
-	"sort"
+	"cmp"
+	"slices"
 	"strings"
 
 	"github.com/gnames/gnparser/ent/parsed"
@@ -88,14 +89,13 @@ func prepareWarnings(ws map[parsed.Warning]struct{}) []parsed.QualityWarning {
 		i++
 	}
 
-	sort.Slice(res, func(i, j int) bool {
-		if res[i].Quality > res[j].Quality {
-			return true
-		}
-		if res[i].Quality < res[j].Quality {
-			return false
+	slices.SortFunc(res, func(a, b parsed.QualityWarning) int {
+		res := cmp.Compare(b.Quality, a.Quality)
+		if res != 0 {
+			return res
 		}
-		return res[i].Warning.String() < res[j].Warning.String()
+		return cmp.Compare(a.Warning.String(), b.Warning.String())
 	})
+
 	return res
 }

tools/quality.go

@@ -1,3 +1,4 @@
+//go:build ignore
 // +build ignore
 
 // quality.go generates a markdown file that describes meaning of each quality
@@ -6,8 +7,9 @@ package main
 
 import (
 	"fmt"
+	"slices"
+
 	"github.com/gnames/gnparser/ent/parsed"
-	"sort"
 )
 
 var body = `# Quality categories
@@ -28,7 +30,7 @@ func main() {
 
 	for _, v := range []int{2, 3, 4} {
 		warns := warnsMap[v]
-		sort.Strings(warns)
+		slices.Sort(warns)
 		item := fmt.Sprintf("\n\n## Quality %d\n", v)
 		for i := range warns {
 			warn := fmt.Sprintf("\n- %s", warns[i])