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  • Pinpoint the tool/utility which occupies a specific system shortcut key

    From hongyi.zhao@gmail.com@21:1/5 to All on Sat Jul 31 22:52:31 2021
    On Ubuntu 20.04, I start Emacs by `emacs -Q', and then hit `C-M-s' (Ctrl + Alt + s), which by default will trigger the `isearch-forward-regexp' function, but I see nothing happened.

    So, I want to pinpoint the tool/utility which occupies a specific system shortcut key, in this case, `C-M-s' (Ctrl + Alt + s). Any hints will be highly appreciated.

    Regards,
    HY

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From Ben Bacarisse@21:1/5 to hongy...@gmail.com on Sun Aug 1 10:25:59 2021
    "hongy...@gmail.com" <hongyi.zhao@gmail.com> writes:

    On Ubuntu 20.04, I start Emacs by `emacs -Q', and then hit `C-M-s'
    (Ctrl + Alt + s), which by default will trigger the
    `isearch-forward-regexp' function, but I see nothing happened.

    Quite a lot of Ctrl+Alt keys are bound by the Gnome shell. If that
    happens, you won't see emacs doing anything. And if the Gnome action is silent, the result is very puzzling at first.

    Go to your preferences and select Keyboard Shortcuts. You can search
    for "Ctrl+Alt+s" (you type that as text: C, t, r, l, + and so on, not
    the single keystroke "chord"). On my system it's bound to "mark the
    active item as being a password".

    So, I want to pinpoint the tool/utility which occupies a specific
    system shortcut key, in this case, `C-M-s' (Ctrl + Alt + s). Any hints
    will be highly appreciated.

    If the keystroke gets through to emacs, you can use describe-key which
    should be bound to C-h k.

    --
    Ben.

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From hongyi.zhao@gmail.com@21:1/5 to hongy...@gmail.com on Sun Aug 1 06:40:59 2021
    On Sunday, August 1, 2021 at 9:22:27 PM UTC+8, hongy...@gmail.com wrote:
    On Sunday, August 1, 2021 at 5:26:04 PM UTC+8, Ben Bacarisse wrote:
    "hongy...@gmail.com" <hongy...@gmail.com> writes:

    On Ubuntu 20.04, I start Emacs by `emacs -Q', and then hit `C-M-s'
    (Ctrl + Alt + s), which by default will trigger the `isearch-forward-regexp' function, but I see nothing happened.
    Quite a lot of Ctrl+Alt keys are bound by the Gnome shell. If that
    happens, you won't see emacs doing anything. And if the Gnome action is silent, the result is very puzzling at first.

    Go to your preferences and select Keyboard Shortcuts. You can search
    for "Ctrl+Alt+s" (you type that as text: C, t, r, l, + and so on, not
    the single keystroke "chord"). On my system it's bound to "mark the
    active item as being a password".
    But I can't find the search butter at all on that panel. So I try to uncheck the `Enable shortcuts' option, and find that it does the trick.

    I also tried with gsettings, but still can't find the keybinding for "Ctrl+Alt+s":

    $ gsettings list-schemas | xargs -n1 gsettings list-recursively |grep -iF '<Control><Alt>'
    org.gnome.settings-daemon.plugins.media-keys logout ['<Control><Alt>Delete'] org.gnome.desktop.wm.keybindings cycle-panels ['<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.desktop.wm.keybindings switch-to-workspace-up ['<Super>Page_Up', '<Control><Alt>Up']
    org.gnome.desktop.wm.keybindings switch-to-workspace-left ['<Control><Alt>Left']
    org.gnome.desktop.wm.keybindings switch-to-workspace-right ['<Control><Alt>Right']
    org.gnome.desktop.wm.keybindings switch-to-workspace-down ['<Super>Page_Down', '<Control><Alt>Down']
    org.gnome.desktop.wm.keybindings cycle-panels-backward ['<Shift><Control><Alt>Escape']
    org.gnome.settings-daemon.plugins.media-keys logout ['<Control><Alt>Delete']


    So, I want to pinpoint the tool/utility which occupies a specific
    system shortcut key, in this case, `C-M-s' (Ctrl + Alt + s). Any hints will be highly appreciated.
    If the keystroke gets through to emacs, you can use describe-key which should be bound to C-h k.
    Yes. By unchecking the `Enable shortcuts' option on GNOME Terminal's shortcuts panel, I can confirm `C-h k C-M-s RET' says the following:

    C-M-s runs the command isearch-forward-regexp

    Regards,
    HY

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)
  • From hongyi.zhao@gmail.com@21:1/5 to Ben Bacarisse on Sun Aug 1 06:22:24 2021
    On Sunday, August 1, 2021 at 5:26:04 PM UTC+8, Ben Bacarisse wrote:
    "hongy...@gmail.com" <hongy...@gmail.com> writes:

    On Ubuntu 20.04, I start Emacs by `emacs -Q', and then hit `C-M-s'
    (Ctrl + Alt + s), which by default will trigger the `isearch-forward-regexp' function, but I see nothing happened.
    Quite a lot of Ctrl+Alt keys are bound by the Gnome shell. If that
    happens, you won't see emacs doing anything. And if the Gnome action is silent, the result is very puzzling at first.

    Go to your preferences and select Keyboard Shortcuts. You can search
    for "Ctrl+Alt+s" (you type that as text: C, t, r, l, + and so on, not
    the single keystroke "chord"). On my system it's bound to "mark the
    active item as being a password".

    But I can't find the search butter at all on that panel. So I try to uncheck the `Enable shortcuts' option, and find that it does the trick.

    So, I want to pinpoint the tool/utility which occupies a specific
    system shortcut key, in this case, `C-M-s' (Ctrl + Alt + s). Any hints
    will be highly appreciated.
    If the keystroke gets through to emacs, you can use describe-key which
    should be bound to C-h k.

    Yes. By unchecking the `Enable shortcuts' option on GNOME Terminal's shortcuts panel, I can confirm `C-h k C-M-s RET' says the following:

    C-M-s runs the command isearch-forward-regexp

    Regards,
    HY

    --- SoupGate-Win32 v1.05
    * Origin: fsxNet Usenet Gateway (21:1/5)