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

For simplicity, I'd suggest using GUI: gitk - The Git repository browser. It's pretty flexible

1. To search code:
   
   
2. To search files:
   
   
3. Of course, it also supports regular expressions:
   
   

And you can navigate through the results using the up/down arrows.