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

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

[Thomas Lynch]

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Evaluate the following

   (global-set-key (kbd "C-x g neg") "¬")

Now use it, and instead of getting neg, you get the error:

   After 0 kbd macro iterations: user-error: No M-x tags-search or M-x
tags-query-replace in progress








In GNU Emacs 24.5.1 (x86_64-pc-linux-gnu, GTK+ Version 3.18.2)
 of 2015-10-24 on trouble, modified by Debian
Windowing system distributor `The X.Org Foundation', version 11.0.11703000
System Description: Debian GNU/Linux testing (stretch)

Configured using:
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Major mode: Shell

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

[Alexis]

Thomas Lynch <thomas.lynch@reasoningtechnology.com> writes:

> Evaluate the following
>
>    (global-set-key (kbd "C-x g neg") "¬")
>
> Now use it, and instead of getting neg, you get the error:
>
>    After 0 kbd macro iterations: user-error: No M-x tags-search 
>    or M-x 
> tags-query-replace in progress

Are you wanting to use 'C-x g neg' to insert the symbol "¬" into 
the buffer? If so, you'll need to create a command for 
`global-set-key` to call, which does the insertion, e.g.

    (global-set-key (kbd "C-x g neg")
                    (lambda () 
                      (interactive) (insert "¬")))

If this is not what you're after, could you please explain further 
what you're trying to do?


Alexis.

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

[Andreas Schwab]

Thomas Lynch <thomas.lynch@reasoningtechnology.com> writes:

> Evaluate the following
>
>    (global-set-key (kbd "C-x g neg") "¬")

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") [?¬])

Andreas.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."

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

[Alexis]

Andreas Schwab <schwab@suse.de> writes:

> Thomas Lynch <thomas.lynch@reasoningtechnology.com> writes:
>
>> Evaluate the following
>>
>>    (global-set-key (kbd "C-x g neg") "¬")
>
> 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") [?¬])

Neat!

The documentation for the `global-set-key` function, at least in 
24.5.3 and in the emacs-25 branch as at d9ea7950, doesn't mention 
this possibility:

    (global-set-key KEY COMMAND) 
 
    Give KEY a global binding as COMMAND.  COMMAND is the command 
    definition to use; usually it is a symbol naming an 
    interactively-callable function.

Perhaps it should be modified to refer to COMMAND-OR-VECTOR?


Alexis.

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

[Andreas Schwab]

Alexis <flexibeast@gmail.com> writes:

> The documentation for the `global-set-key` function, at least in 24.5.3
> and in the emacs-25 branch as at d9ea7950, doesn't mention this
> possibility:
>
>    (global-set-key KEY COMMAND) 
>
>    Give KEY a global binding as COMMAND.  COMMAND is the command
> definition to use; usually it is a symbol naming an
> interactively-callable function.
>
> Perhaps it should be modified to refer to COMMAND-OR-VECTOR?

A vector is a kind of command.  It's a keyboard macro.

ELISP> (commandp [?¬])
t

For non-interactive use, define-key is preferred, which has all details.

Andreas.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."

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

[Thomas Lynch]

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Note that every other character appears to work with this same syntax that
neg doesn't,  take for example:

(global-set-key (kbd "C-x g > =") "≥")

That and every other character in quotes that I have tried, works fine.
Only neg is different.

On Mon, Feb 15, 2016 at 1:03 PM, Andreas Schwab <schwab@suse.de> wrote:

> Alexis <flexibeast@gmail.com> writes:
>
> > The documentation for the `global-set-key` function, at least in 24.5.3
> > and in the emacs-25 branch as at d9ea7950, doesn't mention this
> > possibility:
> >
> >    (global-set-key KEY COMMAND)
> >
> >    Give KEY a global binding as COMMAND.  COMMAND is the command
> > definition to use; usually it is a symbol naming an
> > interactively-callable function.
> >
> > Perhaps it should be modified to refer to COMMAND-OR-VECTOR?
>
> A vector is a kind of command.  It's a keyboard macro.
>
> ELISP> (commandp [?¬])
> t
>
> For non-interactive use, define-key is preferred, which has all details.
>
> Andreas.
>
> --
> Andreas Schwab, SUSE Labs, schwab@suse.de
> GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
> "And now for something completely different."
>

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

[Noam Postavsky]

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

Andreas Schwab <schwab@suse.de> writes:

> Thomas Lynch <thomas.lynch@reasoningtechnology.com> 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 ?,))

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

[Andreas Schwab]

On Jun 05 2018, Noam Postavsky <npostavs@gmail.com> wrote:

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

Strings as key sequence are legacy and can only contain ASCII and
Meta-ASCII characters.

Andreas.

-- 
Andreas Schwab, SUSE Labs, schwab@suse.de
GPG Key fingerprint = 0196 BAD8 1CE9 1970 F4BE  1748 E4D4 88E3 0EEA B9D7
"And now for something completely different."

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

[Lars Ingebrigtsen]

Andreas Schwab <schwab@suse.de> writes:

>> (execute-kbd-macro [?¬]) works, but shouldn't the string version work
>> too?  I see that it fails because of this statement in keyboard.c:
>
> Strings as key sequence are legacy and can only contain ASCII and
> Meta-ASCII characters.

So I guess there's nothing to fix here, and I'm closing this bug report.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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

[Thomas Walker Lynch via Bug reports for GNU Emacs, the Swiss army knife of text editors]

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It has been so long that I only vaguely remember it in the first place.
That is one way to make a bug report moot.  LOL

On Sat, Jan 29, 2022 at 5:59 PM Lars Ingebrigtsen <larsi@gnus.org> wrote:

> Andreas Schwab <schwab@suse.de> writes:
>
> >> (execute-kbd-macro [?¬]) works, but shouldn't the string version work
> >> too?  I see that it fails because of this statement in keyboard.c:
> >
> > Strings as key sequence are legacy and can only contain ASCII and
> > Meta-ASCII characters.
>
> So I guess there's nothing to fix here, and I'm closing this bug report.
>
> --
> (domestic pets only, the antidote for overdose, milk.)
>    bloggy blog: http://lars.ingebrigtsen.no
>

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