Compiling my case feature containing pos @brackets <0 100 0 0>; doesn’t return any error, but the feature doesn’t appear in the list of features in the edit window nor in the exported font. Generating the feature automatically using the separate .case glyphs works fine.
I tried with a fresh new file and got the same issue. Hope I’m not missing something here.
I’m on Glyphs 3.1 (3133) / MacOS 12.0.1. Thank you.
Only GSUB features appear there. For previewing GPOS other than kerning, you would need to test in Window > Text Preview (but it does not yet support OT feature selections) or an external app like a browser.
I just tested with the Webfont Test HTML script in Safari, and it works as expected for me. Glyphs 3.1 (3133) on macOS 12.4.
I hope I’m not doing it wrong, but it doesn’t seem to be working in Illustrator for me. I tried typing all caps, switching Character > All Caps as well as Type > Change Case > UPPERCASE, an nothing. I tested in InDesign, Photoshop, TextEdit, and in the browser and it works everywhere.