title: How do I check which merge tool I use?
body: <p>I want to check which merge tool my git is set to - I just don't remember the name. I know I can wait till the next merge opportunity to run it via <code>git merge tool</code> and see what was it, but I'd like to type something like <code>git mergetool status</code> to see what is the tool (and what is the version, for instance).</p>