认识
官网：https://apps.gnome.org/Characters/
文档：https://gitlab.gnome.org/GNOME/gnome-characters/-/blob/main/README.md
仓库：https://gitlab.gnome.org/GNOME/gnome-characters
Characters is a simple utility application to find and insert unusual characters. It allows you to quickly find the character you are looking for by searching for keywords. You can also browse characters by categories, such as Punctuation, Pictures, etc. 简而言之，Characters，我们能够输入“特殊的字符”，例如，Emoji，数学符号，……
构建
https://flathub.org/en/apps/org.gnome.Characters
flatpak install flathub org.gnome.Characters
flatpak run org.gnome.Characters