Branch-name autocompletion and selection

[obensource]

Let's implement branch-name autocompletion and selection!

Description

A common git shortcut is to hit <tab> after typing the checkout command and a few characters of a branch name (eg. $git checkout awe + <tab>). This returns a list of all branches that begin with those characters (eg. aweseome-branch-1, awesome-branch-2, ...).

Requirements

I'd like to see the following shortcuts implemented:

• $checkout + /^[a-zA-Z0-9_.-]*$/ + <tab>
• $checkout + /^[a-zA-Z0-9_.-]*$/ + <tab><tab>

Possible Solution

This would take any number of acceptable characters after checkout, and check to see if they're included in any names within the list of local branch names.

• If there's only one match: autocomplete the branch name upon the <tab> keystroke. When the user hits <return>, the checkout confirmation prompt runs (and checks out that branch).
• If there are multiple matches, the user should hit <tab> again to be able to see them listed in the console, and is then presented with a prompt–asking if they'd like to checkout any of the logged branches (followed by a selection list).
• This should also handle the standard git use of the bash asterisk wildcard, and be able to match branch names with any number of acceptable characters followed by *.
  • eg. $checkout awe* + <tab> logs any number of awesomely named branches (& runs a prompt), but autocompletes the branch name if there's only one match.