WezTerm doesn't use the Nerd Font Symbols fallback when using certain non-default fonts

[rowanlovejoy]

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

Windows

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

No response

WezTerm version

20240509-223025-91a16e52

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

If I change the default font used by WezTerm from JetBrains Mono to Fira Code, Consolas, or Cascadia Code (these are fonts I've tried; used the latest versions of all three), WezTerm no longer uses the Nerd Font Symbols fallback. However, I also tried Geist and Geist Mono, and with them WezTerm does appear to use the Nerd Font Symbols fallback. Based on the font fallback section of the docs, I would have expected the fallback to be used in all these cases. Tried using both the font() and font_with_fallback() functions; result is the same with both.

To Reproduce

Edit .wezterm.lua and specify either Fira Code, Consolas, or Cascadia Code as the font and then save the file.

Configuration

local wezterm = require("wezterm")

-- This will hold the configuration.
local config = wezterm.config_builder()

config.font = wezterm.font_with_fallback("Fira Code")

return config

Expected Behavior

The Nerd Font Symbols fallback is used with whatever font I specify.

Logs

No response

Anything else?

No response