Bobby de Vos
I am appreciating a Font Bakery check that uses a variable font to find issues with glyph interpolation, this has flagged issues in a number of our projects. https://github.com/fonttools/fontbakery/issues/3930
New check: Interpolation issues · Issue #3930 · fonttools/fontbakery

Short (one line) sentence describing what needs to be checked: We can (and therefore should) detect interpolation errors in variable fonts. Detailed description of the problem. It would likely be r...

GitHub
Apr 15, 2025 at 4:38pmWeb
Show threadSimon CozensApr 15, 2025
@devosb Several hundred times faster in fontspector!
Show threadBobby de VosApr 22, 2025
@simoncozens Indeed, I like the speed increase. Would you suggest using fontspector for production use, even though the README.md file says /early alpha stage/?
Show threadSimon CozensApr 22, 2025
@devosb I need to update the README! It now has feature parity with fontbakery.
Show threadBobby de VosAug 22, 2025
@simoncozens Maybe feature parity if the optional plugins are loaded, but I and others https://github.com/fonttools/fontspector/issues/163 are having problems with the plugins.
Readme maybe with typo in code snippet · Issue #163 · fonttools/fontspector

Observed behaviour In https://github.com/fonttools/fontspector?tab=readme-ov-file#building-plugin-profiles There is: npm install rpm run build-microsoft # build-adobe, build-test... Is rpm correct ...

GitHub
Show threadSimon CozensAug 22, 2025
@devosb Yes, I'm already aware.