From the Too Useful Not to Blog Department:
open_gem from Adam Sanderson is a new RubyGems Plugin to automatically open a gem's source in your favorite $EDITOR.
gem update --system
sudo gem install open_gem
export EDITOR=mate
gem open rails
NOTE: If you have RubyGems 1.1 or 1.2, 'gem update --system' may not work. See the RubyGems Release Notes for more info.
After I saw the gem graph plugin, I wondered what else gem plugins might be used for. I didn't think of anything at the time. Now that I read about this plugin it sounds so blindingly obvious I'm a little ashamed I hadn't thought of it. Thanks for posting about this, Chad! I'm sure I'll find this command useful.
remove
Yay! lol, I always got frustrated copying / pasting the path given by gem which
remove