Codespaces: Terminal: MesloLGS NF's (Nerd Font patched) glyphs and symbols not rendered properly

[benz0li]

Does this issue occur when all extensions are disabled?: Not relevant

• VS Code Version: 1.94.2, 384ff7382de624fb94dbaf6da11977bba1ecd427, x64
• OS Version: Debian 12 (bookworm)

Steps to Reproduce:

1. Open https://github.com/b-data/data-science-devcontainers
2. Codespaces > New with options...
   • Dev container configuration: Python base

3. Install font Meslo LGS NF

   mkdir -p ${HOME}/.local/share/fonts/truetype/meslo
   curl -sSL https://github.com/romkatv/powerlevel10k-media/raw/master/MesloLGS%20NF%20Regular.ttf -o "${HOME}/.local/share/fonts/truetype/meslo/MesloLGS NF Regular.ttf"
   curl -sSL https://github.com/romkatv/powerlevel10k-media/raw/master/MesloLGS%20NF%20Bold.ttf -o "${HOME}/.local/share/fonts/truetype/meslo/MesloLGS NF Bold.ttf"
   curl -sSL https://github.com/romkatv/powerlevel10k-media/raw/master/MesloLGS%20NF%20Italic.ttf -o "${HOME}/.local/share/fonts/truetype/meslo/MesloLGS NF Italic.ttf"
   curl -sSL https://github.com/romkatv/powerlevel10k-media/raw/master/MesloLGS%20NF%20Bold%20Italic.ttf -o "${HOME}/.local/share/fonts/truetype/meslo/MesloLGS NF Bold Italic.ttf"
   fc-cache -fv

4. Install Zsh theme Powerlevel10k

   git clone --depth=1 https://github.com/romkatv/powerlevel10k.git ${HOME}/.oh-my-zsh/custom/themes/powerlevel10k

5. Change Zsh theme to Powerlevel10k

   sed -i 's/ZSH_THEME="devcontainer"/ZSH_THEME="powerlevel10k\/powerlevel10k"/g' ${HOME}/.zshrc

6. Open a new Terminal

---

Safari v18.0.1 (20619.1.26.31.7); Terminal › Integrated: Gpu Acceleration: auto

Does this look like a diamond (rotated square)? Yes

Does this look like a lock? No

Cross reference:

• https://github.com/coder/code-server/pull/7026#issuecomment-2423630849

[benz0li]

Safari v18.0.1 (20619.1.26.31.7); Terminal › Integrated: Gpu Acceleration: off

Does this look like a diamond (rotated square)? No

[benz0li]

Firefox 131.0.3; Terminal › Integrated: Gpu Acceleration: auto

Does this look like a diamond (rotated square)? Yes

Does this look like a lock? No

[benz0li]

Firefox 131.0.3; Terminal › Integrated: Gpu Acceleration: off

Does this look like a diamond (rotated square)? No

Ping @Tyriar

[benz0li]

Interestingly, Firefox displays the Terminal with MesloLGS NF correctly at https://coder.jupyter.b-data.ch (code-server 4.94.2-rc.1 – aka Code 1.94.2).

[benz0li]

The Terminal with MesloLGS NF worked fine for both Safari and Firefox up to code-server version 4.93.1 – aka Code 1.93.1.

This version is currently deployed at https://demo.jupyter.b-data.ch.