Bunch of bug fixes. This line in the release notes:
Various Markdown fixes.
Is an understatement, to say the least. 8.6.1’s Markdown support is terrific.
Update: More from Seth Dillingham, who wrote BBEdit’s Markdown language module:
8.6 included a new Markdown language module. This was truly the most difficult
language module ever. There may be no less parseable language in the whole world.
★ Friday, 16 February 2007