How to git grep only a set of file extensions

Question

How do you perform a git grep and limit the files checked to a set of files. I would like to be able to grep the contents of .cpp and .h files looking for MyFunc. eg:

Answer 1

Use:

git grep "MyFunc" -- '*.cpp' '*.h'

The quotes are necessary so that git expands the wildcards rather than the shell. If you omit them, it'll only search files in the current directory, rather than including subdirectories.