title: What are `git diff --word-diff' default regexps?
body: <p><code>git diff</code> has option <code>--word-diff-regex=&lt;...&gt;</code> that matches words. There are special default values for some languages (as said in <code>man 5 gitattributes</code>). But what are these? No description in docs, I looked up sources of <code>git</code>, haven't found them too.</p>
  
  <p>Any ideas?</p>
  
  <p>EDIT: I'm on <code>git 1.9.1</code>, but I'll accept answers for any version.</p>