该目录~/.local/share/applications/包括三个与不同版本的 Firefox 相关的文件，即
- 火狐——
firefox.desktop
[Desktop Entry]
Encoding=UTF-8
Version=1.0
Type=Application
Name=Firefox
Icon=/opt/firefox/firefox/browser/chrome/icons/default/default128.png
Exec=/opt/firefox/firefox/firefox
StartupNotify=false
StartupWMClass=Firefox
OnlyShowIn=GNOME;Unity;
X-UnityGenerated=true
- 火狐测试版 -
firefox-beta.desktop
[Desktop Entry]
Encoding=UTF-8
Version=1.0
Type=Application
Name=Firefox Beta
Icon=/opt/firefox/firefox-beta/browser/chrome/icons/default/default128.png
Exec=/opt/firefox/firefox-beta/firefox
StartupNotify=false
StartupWMClass=Firefox Beta
OnlyShowIn=GNOME;Unity;
X-UnityGenerated=true
- Firefox 开发者版 -
firefox-dev.desktop
[Desktop Entry]
Encoding=UTF-8
Version=1.0
Type=Application
Name=Firefox Developer Edition
Icon=/opt/firefox/firefox-dev/browser/chrome/icons/default/default128.png
Exec=/opt/firefox/firefox-dev/firefox
StartupNotify=false
StartupWMClass=Firefox Developer Edition
OnlyShowIn=GNOME;Unity;
X-UnityGenerated=true
问题：
目前，所有 Firefox Beta 实例都与 Firefox Stable 启动器图标相关联。
期望：
所有 Firefox Beta 实例都必须与 Firefox Beta 启动图标相关联。