Em dashes are indeed amazing! Go U+2014 !

has anyone used/seen em dashes in file/dir names? just wondered — I have't.

It's certainly easier to read than a hyphen/minus...but i guess it may become problematic cross-platform (on windows/linux it isn't as straight forward as on macos).

I used to have ripped music that had em dashes in the filenames. But several music players displayed a question mark for it. So I replaced them all with a hyphen.

Very interesting. The media tracks may've been em dashed during prod. Spotify seems to use this format "Artist — Album".

I ripped music from both CDs and Internet radio (not Spotify). I remember there were definitely em dashes in those from Internet radio, but I'm not sure whether they also occurred in those from CDs — those filenames probably came from an online DB. Of course the Internet radios might have ripped the music in the same way.