Feature request: more completions!

[jyn514]

Some commands I use often that aren't currently suggested (or need 90% of the typing to be suggested):

• git rebase -i $(git merge-base HEAD master) - this one is a stretch
• git rebase -i master - bit will not complete master, you have to type it in yourself
• git status - for some reason typing st shows pull --rebase origin master before commands starting with st?
• git show - same bug, shows commands that don't start with sh before show
• git checkout <branch> -- file - bit will complete up to <branch> but not further
• git checkout -p; git add -p - bit will not show -p in the initial list. This one is a stretch.
• git log <branch> - bit will not complete <branch>. It would also be nice to complete file names.
• git diff --cached - diff needs up to dif to complete and --cached isn't suggested at all
• git worktree add - bit will complete up to worktree but no further

[chriswalz]

bit 39d807e will now:

• searches for suggestions based on prefix except for branches where it will do a "contains" filter
• shows branches for log & rebase

Future work:
git checkout -- file - bit will complete up to but not further
git checkout -p; git add -p - bit will not show -p in the initial list. This one is a stretch.
git worktree add - bit will complete up to worktree but no further