Tab completion when `patch` asks for filename

Question

When the patch command doesn't find the file to patch, it asks for a filename.

Is there any way to get this to use tab complete?

Answer 1

Try

rlwrap -c patch -i patch.diff

rlwrap tries do add readline functionality to commands that lack it. There exists a couple of alternatives to rlwrap. If you're a zsh user, you may also have a look at Using zsh's line editor to wrap around subprocesses and at /usr/share/zsh/functions/Misc/nslookup for an example of how to add the zsh line editor to a command.