Ubuntuで VSCodeの Quick Fixが使えなかった問題の調査と修正

VScodeには Quick Fixという機能があって, Rustとか Goの traitとか interfaceを実装する際の雛形の生成に使えるのですが, そのショートカットである Ctrl + . が Ubuntuで効かなかったのでその原因の調査と修正を行った.

バインドされているキーを探す

gsettings list-recursively を使ってショートカット一覧を出力し, Ctrlがバインドされているキーを探す.

% gsettings list-recursively | grep "<Control>" 
org.freedesktop.ibus.panel.emoji hotkey ['<Control>period', '<Control>semicolon']
org.freedesktop.ibus.panel.emoji unicode-hotkey ['<Control><Shift>u']
org.gnome.Terminal.Legacy.Keybindings close-tab '<Control><Shift>w'
org.gnome.Terminal.Legacy.Keybindings close-window '<Control><Shift>q'
org.gnome.Terminal.Legacy.Keybindings copy '<Control><Shift>c'
org.gnome.Terminal.Legacy.Keybindings find '<Control><Shift>F'
org.gnome.Terminal.Legacy.Keybindings find-clear '<Control><Shift>J'
org.gnome.Terminal.Legacy.Keybindings find-next '<Control><Shift>G'
org.gnome.Terminal.Legacy.Keybindings find-previous '<Control><Shift>H'
org.gnome.Terminal.Legacy.Keybindings move-tab-left '<Control><Shift>Page_Up'
org.gnome.Terminal.Legacy.Keybindings move-tab-right '<Control><Shift>Page_Down'
org.gnome.Terminal.Legacy.Keybindings new-tab '<Control><Shift>t'
org.gnome.Terminal.Legacy.Keybindings new-window '<Control><Shift>n'
org.gnome.Terminal.Legacy.Keybindings next-tab '<Control>Page_Down'
org.gnome.Terminal.Legacy.Keybindings paste '<Control><Shift>v'
org.gnome.Terminal.Legacy.Keybindings prev-tab '<Control>Page_Up'
org.gnome.Terminal.Legacy.Keybindings zoom-in '<Control>plus'
org.gnome.Terminal.Legacy.Keybindings zoom-normal '<Control>0'
org.gnome.Terminal.Legacy.Keybindings zoom-out '<Control>minus'
org.gnome.desktop.wm.keybindings cycle-panels ['<Control><Alt>Escape']
org.gnome.desktop.wm.keybindings cycle-panels-backward ['<Shift><Control><Alt>Escape']
org.gnome.desktop.wm.keybindings switch-panels ['<Control><Alt>Tab']
org.gnome.desktop.wm.keybindings switch-panels-backward ['<Shift><Control><Alt>Tab']
org.gnome.shell.extensions.screenshot-window-sizer cycle-screenshot-sizes ['<Alt><Control>s']
org.gnome.shell.extensions.screenshot-window-sizer cycle-screenshot-sizes-backward ['<Shift><Alt><Control>s']

org.freedesktop.ibus.panel.emoji に '<Control>period' がアサインされており, こちらにキーが取られ VScodeの方が効いていないと予想される