fix: print error output from git

cmd/root.go

@@ -90,6 +90,6 @@ func RootCmd(command *cobra.Command, args []string) {
 			log.Printf("run git commit failed, err=%v\n", err)
 			log.Printf("commit message is: \n\n%s\n\n", string(message))
 		}
-		fmt.Print(result)
+		fmt.Print(string(result))
 	}
 }

git/git.go

@@ -30,66 +30,49 @@ func IsCurrentDirectoryGitRepo() (bool, error) {
 	// run git remote command
 	cmd := exec.Command("git", "remote")
 
-	if stderr, err := cmd.StderrPipe(); err != nil {
+	var err error
+	var stderr io.ReadCloser
+	if stderr, err = cmd.StderrPipe(); err != nil {
 		return false, err
-	} else {
-		defer stderr.Close()
-
-		if err := cmd.Start(); err != nil {
-			return false, err
-		}
+	}
 
-		if result, err := ioutil.ReadAll(stderr); err != nil {
-			return false, err
-		} else {
+	if err := cmd.Start(); err != nil {
+		return false, err
+	}
 
-			if err := cmd.Wait(); err != nil {
-				return false, fmt.Errorf("%s", string(result))
-			}
+	var result []byte
+	if result, err = ioutil.ReadAll(stderr); err != nil {
+		return false, err
+	}
 
-			return true, nil
-		}
+	if err := cmd.Wait(); err != nil {
+		return false, fmt.Errorf("%s", string(result))
 	}
+
+	return true, nil
 }
 
-func CommitMessage(message []byte, all bool) (string, error) {
+func CommitMessage(message []byte, all bool) ([]byte, error) {
 	// save the commit message to temp file
-	if file, err := ioutil.TempFile("", "COMMIT_MESSAGE_"); err != nil {
-		return "", err
-	} else {
-		defer os.Remove(file.Name())
-
-		if _, err := file.Write(message); err != nil {
-			return "", err
-		}
-
-		// run git commit command
-		cmd := exec.Command("git", "commit", "-F")
-		cmd.Args = append(cmd.Args, file.Name())
-		if all {
-			cmd.Args = append(cmd.Args, "-a")
-		}
-
-		if stdout, err := cmd.StdoutPipe(); err != nil {
-			return "", err
-		} else {
-			defer stdout.Close()
-
-			if err := cmd.Start(); err != nil {
-				return "", err
-			}
-
-			if result, err := ioutil.ReadAll(stdout); err != nil {
-				return string(result), err
-			} else {
-				if err := cmd.Wait(); err != nil {
-					return string(result), err
-				} else {
-					return string(result), nil
-				}
-			}
-		}
+	var err error
+	var file *os.File
+	if file, err = ioutil.TempFile("", "COMMIT_MESSAGE_"); err != nil {
+		return nil, err
+	}
+	defer os.Remove(file.Name())
+
+	if _, err := file.Write(message); err != nil {
+		return nil, err
 	}
+
+	// run git commit command
+	cmd := exec.Command("git", "commit", "-F")
+	cmd.Args = append(cmd.Args, file.Name())
+	if all {
+		cmd.Args = append(cmd.Args, "-a")
+	}
+
+	return cmd.CombinedOutput()
 }
 
 func copyFile(dstName, srcName string) (written int64, err error) {
@@ -112,7 +95,6 @@ func execPath() (string, error) {
 	if err != nil {
 		return "", err
 	}
-	defer stdout.Close()
 
 	if err := cmd.Start(); err != nil {
 		return "", err