How to open files from Finder into existing instance of Sublime Text 2? I would like to be able to go into Finder and open files into an existing instance of Sublime Text 2, which has a side menu with all open files.  However, when I hit Open With -> Sublime Text 2.app, it opens a whole new instance of Sublime, which is not what I want.  I can certainly accomplish grouping of my documents in a single instance if I open them within the application but that requires more steps and time, i.e. is not always  as convenient as opening them from Finder.
As shown in this answer on SuperUser, you can set this behaviour by changing the open_files_in_new_window setting in Sublime Text to false. (Note that it's recommended that you override the setting in the Settings - User file rather than changing it in Settings - Default.)