Lower-case fallback font not found by wezterm

[zhengpd]

What Operating System(s) are you seeing this problem on?

macOS

Which Wayland compositor or X11 Window manager(s) are you using?

No response

WezTerm version

20241205-083533-6f375e29

Did you try the latest nightly build to see if the issue is better (or worse!) than your current version?

Yes, and I updated the version box above to show the version of the nightly that I tried

Describe the bug

When the font "JetBrains Mono" is written as "JetBrains mono" (the m is lower case), it's found if it's the first item for font_with_fallback, otherwise it would not be found.

• This works: font_with_fallback({ "JetBrains mono", "Ubuntu Mono" })
• And this works: font_with_fallback({ "Ubuntu Mono", "JetBrains Mono" })
• But this do not work: font_with_fallback({ "Ubuntu Mono", "JetBrains mono" })

Ubuntu Mono & JetBrains Mono are both available on my system.

To Reproduce

No response

Configuration

font = wt.font_with_fallback({ "Ubuntu Mono", "JetBrains mono" })

Expected Behavior

No response

Logs

No response

Anything else?

No response