add OpenInEditor

goutil.go

@@ -149,6 +149,26 @@ func OpenInDefaultApp(filename string, wait bool) error {
 	}
 }
 
+func OpenInEditor(filename string, wait bool) error {
+	var err error
+	goos := runtime.GOOS
+	if ed := os.Getenv("EDITOR"); ed != "" {
+		cmd := exec.Command(ed, filename)
+		cmd.Env = os.Environ()
+		if wait {
+			err = cmd.Run()
+			if goos == "windows" {
+				AskFor("Press Enter when you're done")
+			}
+		} else {
+			err = cmd.Start()
+		}
+	} else {
+		err = errors.New("EDITOR not set in environment")
+	}
+	return err
+}
+
 type CommandFunc func(args []string) error
 
 type CommandFlagsInit func(s *flag.FlagSet)