Another problem is we people doing oh, say monthly updates from git, and hoping to get a summary of what to be aware of. The best I can do currently is
git fetch origin git diff master..origin/master \ RELEASE-NOTES-*| tee /tmp/gitdiff$$|wdiff -d -3 > /tmp/mediawikiDiff$$ ${PAGER-less} /tmp/mediawikiDiff$$