Bing wins this one. It seems like their crawler is too stupid. I might
just remove the raw markdown output anyways as it doesn't really serve
much purpose. You can go to GitHub and see the raw files if you really
want.
I believe I originally added it because I thought it was somewhat hard
to get from the "View history" commit list to the actual page but I feel
like people who care enough to go looking for the source code will be
willing to use GitHub to find the actual source file.
According to Semrush, 741b3bc01b added a
block for /blog/*.md for User-Agent: *, even though everything I can
read says that it shouldn't apply since the blocks are separated.
I tried reordering the rules and explicitly adding an `Allow: /` rule,
both to match what's shown on Google Search documentation[1].
[1]: https://developers.google.com/search/docs/crawling-indexing/robots/create-robots-txt,
and
