@ia I can no longer use Writer because my system thinks .md files are "Genesis Games". I have no clue what app could have caused this registration (I have not recently installed any emulators) and it happens even selecting a document from within the app's library view. How can I kick Sequoia into understanding .md = text/markdown?
@hans This just appeared in my news feed but it's dated February 5 and it's not showing up as a boost. It's currently February 15, so that seems odd. (It's also 2:33 AM and I should go back to bed instead of checking the internet.) I'm not sure if you posted it 10 days ago and it only now showed up or if something funky happened with the timestamp but I thought it was worth mentioning.
If you haven't already solved the problem you're asking about:
go to a .md file in the finder
right click on it
choose "get info"
look for the "Open With" section
select the app you want the file to open with
click "Change All"