Code Quality: Add "gofmt -w -s pkg internal cmd" to "make fmt-go"

gofmt formats Go source code, where -s stands for "simplify"

Makefile

@@ -252,6 +252,7 @@ fmt-js:
 	(cd frontend &&	npm run fmt)
 fmt-go:
 	go fmt ./pkg/... ./internal/... ./cmd/...
+	gofmt -w -s pkg internal cmd
 	goimports -w pkg internal cmd
 tidy:
 	go mod tidy

internal/commands/passwd.go

@@ -108,7 +108,7 @@ func getPassword(prompt string) string {
 	signalChannel := make(chan os.Signal, 1)
 	signal.Notify(signalChannel, os.Interrupt)
 	go func() {
-		for _ = range signalChannel {
+		for range signalChannel {
 			fmt.Println("")
 			termEcho(true)
 			os.Exit(1)

internal/query/moments.go

@@ -229,7 +229,7 @@ func MomentsStates(threshold int) (results Moments, err error) {
 func MomentsLabels(threshold int) (results Moments, err error) {
 	var cats []string
 
-	for cat, _ := range MomentLabels {
+	for cat := range MomentLabels {
 		cats = append(cats, cat)
 	}
 

pkg/clusters/clusters.go

@@ -79,7 +79,7 @@ var (
 			s, t float64
 		)
 
-		for i, _ := range a {
+		for i := range a {
 			t = a[i] - b[i]
 			s += t * t
 		}
@@ -93,7 +93,7 @@ var (
 			s, t float64
 		)
 
-		for i, _ := range a {
+		for i := range a {
 			t = a[i] - b[i]
 			s += t * t
 		}

pkg/clusters/json_importer.go

@@ -34,7 +34,7 @@ func (i *jsonImporter) Import(file string, start, end int) ([][]float64, error)
 		return [][]float64{}, err
 	}
 
-	for i, _ := range d {
+	for i := range d {
 		c = 0
 
 		for j := start; j <= end; j++ {

pkg/txt/file_title.go

@@ -57,7 +57,7 @@ func FileTitle(s string) string {
 	title = strings.ReplaceAll(title, "  ", " ")
 
 	// Remove small words from title ending.
-	for w, _ := range SmallWords {
+	for w := range SmallWords {
 		title = strings.TrimSuffix(title, " "+w)
 	}