Macdown as external editor on CLI?

Ok - scratch that. It doesn’t work reliably - there seems to be some state set when I run it from the mac desktop app. I can get repro steps together if it’s helpful, but I’m unsure what the success case should be - which of the following paths should I set in :config editor:

  1. /usr/local/bin/macdown
  2. ‘open -a /Applications/MacDown.app/Contents/MacOS/MacDown’
  3. /Applications/MacDown.app

re: #3 - I read in another forum post on Typora (External editor opened in background) that “Normally Joplin supports .app packages directly.”

Also: I ran the CLI in debug mode but didn’t see anything in log.txt related to opening macdown - just track UI interaction.

Thanks in advance - b