[Desktop Mode] Modern emojis render as blank spaces due to outdated `ttf-twemoji-default`

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评估

难度
3/5
预计耗时
1-2 天
新手友好度
48/100
Issue 类型
缺陷
描述清晰度
描述清楚
活跃度
活跃
技术栈
linux

调研方向

Start by reproducing the blank glyphs in Desktop Mode with the KDE Emoji Selector, as described in the issue. Locate where SteamOS includes ttf-twemoji-default and compare that integration with the maintained noto-fonts-emoji package. Done means Unicode 14 and newer emojis render in the emoji grid and throughout Desktop Mode rather than appearing as blank cells.

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描述

Your system information
  • Steam client version: 1793235415
  • SteamOS version: 3.9.5 (Build 20261023.100)
  • Opted into Steam client beta?: Yes
  • Opted into SteamOS beta?: Yes
  • Have you checked for updates in Settings > System?: Yes
Please describe your issue in as much detail as possible:

I expected modern emojis to render properly throughout Desktop Mode and the KDE Emoji Selector, but SteamOS is currently stuck on Unicode 13.1 because it ships with the outdated ttf-twemoji-default package, causing all newer glyphs (Unicode 14+) to appear as blank empty spaces. Upstream Twemoji was effectively abandoned and halted development after Elon Musk acquired Twitter and laid off the majority of the staff, meaning official updates will never arrive; SteamOS should instead replace it with an actively maintained package like Google's noto-fonts-emoji (Noto Color Emoji) so modern emojis display properly.

Steps for reproducing this issue:
  1. Switch to Desktop Mode on SteamOS.
  2. Open the built-in KDE Emoji Selector (press Super + . or open Emoji Selector from the Application Launcher).
  3. Look through the emoji grid.
  4. Observe numerous blank cells where newer Unicode emojis are missing.
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  3. Fork 仓库,在一个分支上完成修改。
  4. 提交 Pull Request,并在描述里引用这个 Issue 编号。

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