Problem

Switching between repositories from within textmate2 was a bit annoying to me because I either had to click through the file browser or use the open dialog. Or open the directory I wanted from the console.

Solution

Textmate2 has this list of favorites and offers the same search functionality you know from the file name finder. So you can quickly open whole folders by just typing Cmd+Shift+O and selecting the one you want.

So how does this work?

Basically, you can just right-click any directory or file in the file browser on the right to add it to your favorites.

Add all projects to your favorites quickly

If you're like me, you have a projects folder of sorts where all your code repos are stored. Open that with Textmate and select all the folders you would typically open with Textmate in the file browser on the right. Then right-click those and add them as favorites.
Type Cmd+Shift+O and behold the awesome new quick access list you have.

TL;DR

• open your projects folder with textmate2
• mark all project directories
• right click and 'add to favourites'
• cmd+shift+O gives you a convenient selector for those directories