When TextMate burst onto the scene in the mid-2000s, it didn’t take aim at Emacs and Vim as much as BBEdit, a Mac-only editor around more than a decade at that point. TextMate offered radically easy ways to create sophisticated new language modules and plugins compared to most editors of the day. Mostly, though, TextMate had Ruby on Rails: David Heinemeier Hansson developed the framework with early versions of the editor, making it almost custom-built for Rails. That gave TextMate a boost workin...