Godot's script editor is quite good, but if you're coming from Vim or Emacs, moving around can feel sluggish. It's already possible to write scripts in an external editor, but there's no way to quickly switch back to the built-in editor (for, say, debugging) without opening the editor settings and disabling the external editor.

This plugin gives you the best of both worlds by adding a button to the top-right of the built-in script editor that opens the current script in your defined external editor. When you save the script, Godot will detect the change and automatically reload it.

This plugin was written and tested in 3.0 stable. I can't guarantee that it will work in 2.1 or any unstable versions.

This plugin is available on the Asset Library.

Alternatively, create a folder named addons in your project's base folder and clone this repository into it. The result should look like .../my-project/addons/open-external-editor/

In the editor settings (Editor->Editor Settings), find the section for defining an external editor (Text Editor->External). Make sure Use External Editor is unchecked, or the plugin won't do anything. Exec Path and Exec Flags should be set based on what editor you want to use (see below for common examples).

You can optionally change the keyboard shortcut (Ctrl+ E by default) by editing the two constants defined at the top of open_external_editor.gd in the plugin folder. (Eventually I'll come up with an easier way of doing this)

Exec Path:  gvim
Exec Flags: "+normal {line}G{col}|" {file}

Exec Path: [terminal]
Exec Flags: -e vim "+normal {line}G{col}|" {file}

Exec Path: emacs
Exec Flags: +{line}:{col} {file}

Exec Path: C:\Program Files\Sublime Text 3\sublime_text
Exec Flags: {file}:{line}:{col}

MIT