Why hello there!
It’s a wacky question, but I’ve searched - extensively - to no avail, and so posting in this forum is very much a last resort.
For an .ft file when viewed in Finder in Icons view, the icon displays a thumbnail of the contents of the file - with an ‘FT’ displayed at the bottom of the thumbnail. (Much like ‘HTML’ document thumbnails, and various other file extensions.)
How did you get the ‘FT’ there! Is it the result of a property in Info.plist? I see that FoldingText (which is a great app, by the way), doesn’t include it’s own qlGenerator - and so I’m guessing it’s a property somewhere.
It’s rare that googling a thousand paraphrased terms doesn’t produce the right result, but this is definitely one of those times - and so I here am in desperation
I would greatly appreciate any hints - or answers, even!