vimgrep: Searching through multiple file extensions
Here's a neat trick you can do with vimgrep to search through multiple file extensions (for example, finding a reference in all .js and .coffee files).
To find Users in just .js files recursively you would do:
:vimgrep /Users/ **/*.js
To find Users in .js and .coffee files recursively you would do:
:vimgrep /Users/ **/*.js **/*.coffee
This is super useful when you are refactoring code.
I am unsure if Ack.vim can do something similar. If you know, please leave it as a comment!
You can check out some of my other Vim tips here.