How to grep (search) committed code in the Git history

Question

I have deleted a file or some code in a file sometime in the past. Can I grep in the content (not in the commit messages)?

A very poor solution is to grep the log:

Answer 1

Scenario: You did a big clean up of your code by using your IDE. Problem: The IDE cleaned up more than it should and now you code does not compile (missing resources, etc.)

Solution:

git grep --cached "text_to_find"

It will find the file where "text_to_find" was changed.

You can now undo this change and compile your code.