How can I set TextMate as default text editor on Mac OS X?
I've tried it with
ln -s /Applications/TextMate.app/Contents/Resources/mate ~/bin/mate
export EDITOR='mate -w'
but that doesn't work.
Just right (or control) click a file of the type you want to change and:
"Get Info" -> "Open with:" -> (Select TextMate) -> "Change All"
The method through Finder is not practical. If you're a developer, your files likely include .profile, .gitconfig, .bashrc, .bash_profile, .htdocs, etc.
The best way to do this is in Bash (for Sublime Text 3):
defaults write com.apple.LaunchServices LSHandlers -array-add '{LSHandlerContentType=public.plain-text;LSHandlerRoleAll=com.sublimetext.3;}'
For other text editors, I assume you can replace 'com.sublimetext.3' with the proper string. You could probably Google for your text editor's name + "LSHandlerContentType=public.plain-text" to figure out what your app's string would be.
For me, this changed the defaults for both Finder, and
$ open ~/.bashrc
Have you modified your shell PATH environment variable to include ~/bin? That directory is usually not included in PATH by default on OS X. It might be simpler to create the symlink in /usr/local/bin which is usually included in PATH. Try:
echo $PATH
To change the default text editor across the board, use the aforementioned method (i.e., "Get Info" → "Open with:" → (editor of choice) → "Change All") on .txt files. Then it will be used as the default editor for any text-based file that doesn't yet have an application preference for its extension.
For instance, if you use the terminal, the command open -t will use your preferred text editor, which is whatever application is associated with .txt files. By default this is (you guessed it) TextEdit, unless you explicitly specify otherwise.
This worked for me on OS X v10.11 (El Capitan):
defaults write com.apple.LaunchServices/com.apple.launchservices.secure LSHandlers -array-add \
'{LSHandlerContentType=public.plain-text;LSHandlerRoleAll=com.macromates.textmate.preview;}'
来源：https://stackoverflow.com/questions/9370584/set-textmate-as-the-default-text-editor-on-mac-os-x