I have an imported otf of an Arabic font and I added anchors to letters and marks. However I can’t see the mark cloud when I select an anchor, and neither the Mark Preview plugin shows anything. At the same time, another open file (designed in Glyphs) displays the mark cloud properly.
OK. I figured out that if I rename to Glyphs names then the mark cloud works. Shouldn’t this be using the unicodes instead of the names to decide what to display?
No, because not every mark has a Unicode assigned (think .case variants, etc.). The mark cloud is therefore defined by the glyph names. See the tutorial Roll Your Own Glyph Data:https://glyphsapp.com/tutorials/roll-your-own-glyph-data