(See my previous question for additional context).

I'm migrating to zsh from bash, and using oh-my-zsh. When my zsh history looks something like the following:

git status
git add -A
git commit

I want to be able to re-run git add -A. To do that, I could use !?git add, which should:

!?str[?] Refer to the most recent command containing str. The trailing ‘?’ is necessary if this reference is to be followed by a modifier or followed by any text that is not to be considered part of str.

The link for zsh event designators is here.

Unfortunately, I can't do this - as I'm typing !?git add, as I hit the ' ', it auto-completes the command to the most recent command matching git (ie, it auto-completes with git commit). I can't use the event designator properly because of this auto-completion as I hit the space.

I assume this is an oh-my-zsh feature. I have no idea where to look, though - greping for 'complet' in the oh-my-zsh source doesn't get me anywhere.

My question: how do I turn off this feature? Or, if that's not something that's known, where should I be looking - if I was going to implement this auto-complete when whitespace is entered, where would be a logical place to do so in the oh-my-zsh framework?