Make Unity open a Sublime Text 3 project

I’m trying out Sublime Text 3 (build 3065) as texteditor for Unity (4.6.0f2) on OSX (10.9.5).

I’ve chosen “Sublime Text” in the Preferences->External Tools->External Script Editor. It works fine, except for one thing: When I open a script from Unity, it opens it as a single file. I would really love if it opened it inside a Sublime Text project!

From inside a project you can have multiple tabs open, look up other scripts, and so on. I miss those features, when only opening a single file.

I know how to setup a Sublime Text project - but is it possible to make Unity open it, when opening a script from within Unity? Any hints, clues or directions are most welcome! Thanks in advance!

For anyone finding this page in search of an answer, you must add

“open_files_in_new_window”: false,

To your user settings file.