Ah, so the equivalent of emacs's #foo or sometimes #foo#.

Rather than ignoring it, you can use ```git status -uno```, which will only show the index and ```git add -u``` which will only add files which are already in the repo. The latter is especially useful, as one usually wants to add new files explicitly one at a time except when starting a new project.

But go ahead and add it to .gitignore if you like. It's certainly harmless.