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bug#22673: 24.5; global set key neg freaks out emacs


From: Noam Postavsky
Subject: bug#22673: 24.5; global set key neg freaks out emacs
Date: Tue, 05 Jun 2018 20:02:53 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.1 (gnu/linux)

retitle 22673 execute-kbd-macro doesn't handle strings with characters in range 
(0x80..0xFF) correctly
quit

Andreas Schwab <address@hidden> writes:

> Thomas Lynch <address@hidden> writes:
>
>> Evaluate the following
>>
>>    (global-set-key (kbd "C-x g neg") "¬")

A more straightforward way is (execute-kbd-macro "¬").  Use

(setq debug-ignored-errors (remq 'user-error debug-ignored-errors)
      debug-on-error t)

to get a backtrace.

> This is the same as binding [?\C-x ?g ?n ?e ?g] to [?\M-,].  You should
> use the vector notation instead:
>
> (global-set-key (kbd "C-x g neg") [?¬])

(execute-kbd-macro [?¬]) works, but shouldn't the string version work
too?  I see that it fails because of this statement in keyboard.c:

      c = Faref (Vexecuting_kbd_macro, make_number (executing_kbd_macro_index));
      if (STRINGP (Vexecuting_kbd_macro)
          && (XFASTINT (c) & 0x80) && (XFASTINT (c) <= 0xff))
        XSETFASTINT (c, CHAR_META | (XFASTINT (c) & ~0x80));

Which transforms ?¬ (aka #xac) into #x800002c == (event-convert-list '(meta ?,))






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