I have two shell scripts I use regularly as git CLI shortcuts:

push

#! /bin/bash

git push "$@"

commit

#! /bin/bash

git add --all && git commit "$@"

I use them like this:

$ touch foo
$ commit # type in a message in the editor
$ push --force-with-lease

I’d like to make pushtab and committab autocomplete as though I typed git pushtab and git committab, respectively.

Here’s what I’ve learned/tried:

1. This post shows how to give a shell script the same auto completion as another command, but it doesn’t work for git subcommands. For example, I could make committab behave like git but not git <subcommand>.
2. This post shows how to make a git command autocomplete with custom behavior. For example, I could make git ptab autocomplete like git pushtab, but it wouldn’t work for commit: I’m not using a git command, merely a regular command, and I prefer to keep it that way.

Is there a way to make a shell script autocomplete like a specific git subcommand?

I am using bash and git-completion.bash is sourced in my shell’s startup script. I’m using cygwin on Windows 10, if that makes a difference.