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bug#30758: 25.3; Cannot exit minibuffer with C-g when opening file or sw


From: Tim Fischbach
Subject: bug#30758: 25.3; Cannot exit minibuffer with C-g when opening file or switching buffers
Date: Mon, 12 Mar 2018 12:48:54 +0000

1) emacs -Q
2) M-x
3) C-g
reproduces the error every time on my machine. Holding C-g for a couple of seconds fixes the problem. Also Esc Esc Esc still works. Even C-S-g works, even though describe-key translates it to C-g. I really think this might be a problem with Ubuntu Unity somehow rebinding or blocking C-g.

Using toogle-debug-on-quit with my normal config, I was able to trigger

  Debugger entered--Lisp error: (quit)
without any further info or

  Debugger entered--Lisp error: (quit)
  read-event(nil t 2)
  sit-for(2)
  execute-extended-command(nil "toggle-debug-on-quit" nil)
  funcall-interactively(execute-extended-command nil "toggle-debug-on-quit" nil)
  call-interactively(execute-extended-command nil nil)
  command-execute(execute-extended-command)
This was NOT reproducible with `emacs -Q`, though.

On Sat, 10 Mar 2018 at 04:05 Noam Postavsky <address@hidden> wrote:
unarchive 26289
reopen 26289
merge 30758 29063 26289
quit

Tim Fischbach <address@hidden> writes:

> I am facing the exact problem described in 
>
>   https://debbugs.gnu.org/cgi/bugreport.cgi?bug=26289
>
> on both Emacs 25.3.2 and 24.5.1 also via `emacs -Q`. 
> When running emacs inside the terminal via `emacs -nw` the problem
> does not occur.

Do you see the same symptoms described in
https://debbugs.gnu.org/cgi/bugreport.cgi?bug=29063#17

    I have also noticed that, with toggle-debug-on-quit on, just typing C-g
    while in the normal writing buffer will always send me to the debugger on
    only one line:

    Debugger entered--Lisp error: (quit)
      internal-timer-start-idle()

    This happens in the broken emacs only, and C-g here does nothing in the
    working emacs. Likewise, in the broken emacs, while I am highlighting text
    with C-space, C-g will 50% of the time cancel the highlight and 50% of the
    time open the above debugger on the timer start function.

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