Firefox DevTools bitmap Cozette strikethrough glyphs [Minor Bug]

[nionios]

Hello, I noticed a weird bug relating to the firefox developer tools.

As you can see in the following screenshot, the strikethrough seems to not use the correct glyph for strikethrough text, when using a bitmap version of Cozette.

However, this is not an inherent bug of the font everywhere. For example, here is a screenshot of strikethrough text in Alacritty:

Note that CozetteVector on the other hand works as intended:

Firefox Version: 88.0.1
Cozette Release (bitmap, otb files): v.1.10.1b1
CozetteVector Release: v.1.9.3-1

[slavfox]

I have a sneaking suspicion that this might be related to the STRIKEOUT_ASCENT and STRIKEOUT_DESCENT BDF properties - I'll have to play around with them to try and figure out the correct values.

[nyonson]

I am noticing the same behavior in neovim:

os: arch
cozette: 1.19.2 otb

[slavfox]

My Neovim doesn't underline anything, so I can't reproduce it on my end; Could you check if the same behavior exists between cozette.otb 1.19.2 and cozette.otb 1.19.2-hidpi (not cozette_hidpi.otb)

[nyonson]

Tested with both those versions and see the same thing. Fwiw the strikethroughs are for deprecated hints from the LSP.

[nyonson]

It appears to work with the new hidpi version (cozette_hidpi.otb v.1.19.2-hidpi2) though:

[slavfox]

Is it still broken with the normal-sized version of the font?

[nyonson]

That's right, normal sized still has the issue.

[slavfox]

That's... deeply unsettling, since the hidpi version is built from the same sources and literally just has the glyphs and their bounding boxes scaled up by a factor of two.

Could you try this version?
cozette_otb.zip

[nyonson]

Ah, that worked, maybe I grabbed the wrong version on my last test?

[slavfox]

No, this seems to be a problem in how FontForge generates the fonts. The GitHub release builds all formats directly from the .sfd source; the build I attached was compiled to .bdf first, and then converted to .otb. I'll release a new version in a minute.

I'm glad it works, finally! I don't know if I could've done anything to fix it if it hadn't worked this time :P