de-capitalize errors to make staticcheck happy

cmd_get.go

@@ -153,7 +153,7 @@ func look(name string) error {
 
 	switch len(reposFound) {
 	case 0:
-		return fmt.Errorf("No repository found")
+		return fmt.Errorf("no repository found")
 	case 1:
 		repo := reposFound[0]
 		cmd := exec.Command(detectShell())

cmd_get_test.go

@@ -264,7 +264,7 @@ func TestLook(t *testing.T) {
 		}
 
 		err = look("github.com/motemen/_unknown")
-		expect := "No repository found"
+		expect := "no repository found"
 		if !strings.HasPrefix(fmt.Sprintf("%s", err), expect) {
 			t.Errorf("error should has prefix %q, but: %s", expect, err)
 		}

commands.go

@@ -90,7 +90,7 @@ var commandDocs = map[string]commandDoc{
 // Makes template conditionals to generate per-command documents.
 func mkCommandsTemplate(genTemplate func(commandDoc) string) string {
 	template := "{{if false}}"
-	for _, command := range append(commands) {
+	for _, command := range commands {
 		template = template + fmt.Sprintf("{{else if (eq .Name %q)}}%s", command.Name, genTemplate(commandDocs[command.Name]))
 	}
 	return template + "{{end}}"

getter.go

@@ -27,7 +27,7 @@ type getter struct {
 func (g *getter) get(argURL string) error {
 	u, err := newURL(argURL, g.ssh, false)
 	if err != nil {
-		return fmt.Errorf("Could not parse URL %q: %w", argURL, err)
+		return fmt.Errorf("could not parse URL %q: %w", argURL, err)
 	}
 	branch := g.branch
 	if pos := strings.LastIndexByte(u.Path, '@'); pos >= 0 {

helpers_test.go

@@ -21,13 +21,12 @@ func captureReader(block func()) (*os.File, *os.File, error) {
 	if err != nil {
 		return nil, nil, err
 	}
+	defer wOut.Close()
 
 	rErr, wErr, err := os.Pipe()
 	if err != nil {
 		return nil, nil, err
 	}
-
-	defer wOut.Close()
 	defer wErr.Close()
 
 	var stdout, stderr *os.File
@@ -74,9 +73,12 @@ func captureWithInput(in []string, block func()) (string, string, error) {
 		return "", "", err
 	}
 	defer rIn.Close()
+
 	var stdin *os.File
 	os.Stdin, stdin = rIn, os.Stdin
+
 	defer func() { os.Stdin = stdin }()
+	
 	for _, line := range in {
 		fmt.Fprintln(wIn, line)
 	}

remote_repository_test.go

@@ -50,7 +50,7 @@ func TestNewRemoteRepository(t *testing.T) {
 			if repo.IsValid() != tc.valid {
 				t.Errorf("repo.IsValid() should be %v, but %v", tc.valid, repo.IsValid())
 			}
-			vcs, u, err := repo.VCS()
+			vcs, u, _ := repo.VCS()
 			if vcs != tc.vcsBackend {
 				t.Errorf("got: %+v, expect: %+v", vcs, tc.vcsBackend)
 			}

url.go

@@ -148,7 +148,7 @@ func newURL(ref string, ssh, forceMe bool) (*url.URL, error) {
 	if ssh {
 		// Assume Git repository if `-p` is given.
 		if u, err = convertGitURLHTTPToSSH(u); err != nil {
-			return nil, fmt.Errorf("Could not convert URL %q: %w", u, err)
+			return nil, fmt.Errorf("could not convert URL %q: %w", u, err)
 		}
 	}
 

vcs.go

@@ -271,7 +271,7 @@ var MercurialBackend = &VCSBackend{
 var DarcsBackend = &VCSBackend{
 	Clone: func(vg *vcsGetOption) error {
 		if vg.branch != "" {
-			return errors.New("Darcs does not support branch")
+			return errors.New("darcs does not support branch")
 		}
 
 		dir, _ := filepath.Split(vg.dir)
@@ -313,7 +313,7 @@ const fossilRepoName = ".fossil" // same as Go
 var FossilBackend = &VCSBackend{
 	Clone: func(vg *vcsGetOption) error {
 		if vg.branch != "" {
-			return errors.New("Fossil does not support cloning specific branch")
+			return errors.New("fossil does not support cloning specific branch")
 		}
 		if err := os.MkdirAll(vg.dir, 0755); err != nil {
 			return err