git grep -i for Better grepGit comes with its own grep that needs a -i to be case insensitive.
But beware, it only searches stuff that has been committed. I discovered
this when searching for a method I had just refactored into another file
and when to check that I got everything. The alternative grep -r would
have included all of .git as well (which can also be easily remedied
by wrapping git with your own version).