"Speed up htmlTagLookup" caused a regression in chromium
While rolling new libxml commits into chromium, I found that commit b25acce8 "Speed up htmlTagLookup" caused one of our tests to change/break.
I wish I had more context, but unfortunately I didn't write the test and I don't know very much about libxml. I'm going to revert it in chromium for the time being. Let me know if there's anything I can do to help figure out what's happening.