I would like to be able to type a filename in zsh, hit tab, and see a list of files that match that name in any subdirectories of my current directory. Then I could tab through those results and hit enter to select a certain file, just like the built-in zsh tab completion functionality works.
Example desired functionality:
$ emacs app.css [tab]
*www/css/app.css* tmp/static/app.css
[enter]
$ emacs www/css/app.css
If this is not currently a feature, I assume I could write a custom completion script to implement it.