bugzilla-tool/commit-queue should have comment-length limit When error messages are really long, like https://bugs.webkit.org/show_bug.cgi?id=25880#c29 bugzilla-tool should truncate them instead of adding the whole thing to the comment.
I added a 500 char limit: http://trac.webkit.org/browser/trunk/WebKitTools/Scripts/modules/scm.py#L95