For the all the geeks out there who read a lot of README, config, and MAKE files (and other text\* files without extensions) but hate having to either browse the file in TextEdit or if they want to look at it in their favorite text-editor; second-click, and then select Open With MacVim (or other) rather than simply double-clicking. Thankfully there is a way to fix it and here’s how:
- Get RCDefaultApp
- In RCDefaultApp go to the MIME Types tab
- In “text/*”, “text/plain”, and “text/rtf” settings set the Default Application to your text-editor

And you’re done; now you just have to double-click on the file and it will open in your editor automatically.
Here’s how to use RCDefaultApp for assigning default applications to files with extensions easily.