GNU bug report logs - #42590
27.0.91; Advice error for interactive commands

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Yuan Fu <casouri <at> gmail.com>
To: Bug Report Emacs <bug-gnu-emacs <at> gnu.org>
Subject: 27.0.91; Advice error for interactive commands
Date: Tue, 28 Jul 2020 21:58:25 -0400

To reproduce the issue, evaluate

(advice-add 'backward-delete-char-untabify :after 'ignore)

and hit backspace (which should call backward-delete-char-untabify), and
an error occurs: apply: Wrong number of arguments: (1 . 2), 0

Backtrace:

Debugger entered--Lisp error: (wrong-number-of-arguments (1 . 2) 0)
  #f(compiled-function (arg &optional killp) "Delete characters backward, changing tabs into spaces.\nThe exact behavior depends on `backward-delete-char-untabify-method'.\nDelete ARG chars, and kill (save in kill ring) if KILLP is non-nil.\nInteractively, ARG is the prefix arg (default 1)\nand KILLP is t if a prefix arg was specified." (interactive "*p\nP") #<bytecode 0x1ffc4145c759>)()
  apply(#f(compiled-function (arg &optional killp) "Delete characters backward, changing tabs into spaces.\nThe exact behavior depends on `backward-delete-char-untabify-method'.\nDelete ARG chars, and kill (save in kill ring) if KILLP is non-nil.\nInteractively, ARG is the prefix arg (default 1)\nand KILLP is t if a prefix arg was specified." (interactive "*p\nP") #<bytecode 0x1ffc4145c759>) nil)
  backward-delete-char-untabify()
  funcall-interactively(backward-delete-char-untabify)
  call-interactively(backward-delete-char-untabify nil nil)
  command-execute(backward-delete-char-untabify)



In GNU Emacs 27.0.91 (build 1, x86_64-apple-darwin19.5.0, NS appkit-1894.50 Version 10.15.5 (Build 19F101))
of 2020-07-28 built on Brown
Windowing system distributor 'Apple', version 10.3.1894
System Description:  Mac OS X 10.15.5

Recent messages:
Loading uniquify...done
Loading electric...done
Loading emacs-lisp/eldoc...done
Loading cus-start...done
Loading tooltip...done
Loading /Applications/Emacs.app/Contents/Resources/lisp/leim/leim-list.el (source)...done
Finding pointers to doc strings...done
For information about GNU Emacs and the GNU system, type C-h C-a.
Loading loadup.el (source)...done
Mark set [2 times]
apply: Wrong number of arguments: (1 . 2), 0
Configured using:
'configure --with-modules --with-pdumper=yes
--oldincludedir=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/libxml2/
--with-ns
PKG_CONFIG_PATH=/usr/local/Cellar/zlib/1.2.8/lib/pkgconfig:/usr/local/lib/pkgconfig:/opt/X11/lib/pkgconfig'

Configured features:
RSVG DBUS GLIB NOTIFY KQUEUE ACL GNUTLS LIBXML2 ZLIB TOOLKIT_SCROLL_BARS
XIM NS MODULES THREADS JSON PDUMPER LCMS2

Important settings:
  value of $LC_CTYPE: UTF-8
  value of $LANG: en_CN.UTF-8
  locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

Minor modes in effect:
  tooltip-mode: t
  global-eldoc-mode: t
  eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
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  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Load-path shadows:
/Applications/Emacs.app/Contents/Resources/lisp/mail/metamail hides /Applications/Emacs.app/Contents/Resources/lisp/obsolete/metamail
/Applications/Emacs.app/Contents/Resources/lisp/sb-image hides /Applications/Emacs.app/Contents/Resources/lisp/obsolete/sb-image

Features:
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Memory information:
((conses 16 269358 17394)
(symbols 48 20582 1)
(strings 32 55830 2233)
(string-bytes 1 2366984)
(vectors 16 51368)
(vector-slots 8 1408784 68426)
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(intervals 56 234 0)
(buffers 1000 11))

Message #8 received at 42590 <at> debbugs.gnu.org (full text, mbox):

From: Michael Heerdegen <michael_heerdegen <at> web.de>
To: Yuan Fu <casouri <at> gmail.com>
Cc: 42590 <at> debbugs.gnu.org
Subject: Re: bug#42590: 27.0.91; Advice error for interactive commands
Date: Wed, 29 Jul 2020 19:41:35 +0200

Yuan Fu <casouri <at> gmail.com> writes:

> To reproduce the issue, evaluate
>
> (advice-add 'backward-delete-char-untabify :after 'ignore)
>
> and hit backspace (which should call backward-delete-char-untabify), and
> an error occurs: apply: Wrong number of arguments: (1 . 2), 0

Had to think about it.  But it's expected I think: `ignore' is
interactive, and as documented, its interactive spec overwrites the
interactive spec of the original function.  And it doesn't fit.

So everything behaves as documented, it's your specified after advice
that causes the problem.  Right?

Michael.

Message #11 received at 42590 <at> debbugs.gnu.org (full text, mbox):

From: Yuan Fu <casouri <at> gmail.com>
To: Michael Heerdegen <michael_heerdegen <at> web.de>
Cc: 42590 <at> debbugs.gnu.org
Subject: Re: bug#42590: 27.0.91; Advice error for interactive commands
Date: Wed, 29 Jul 2020 15:21:52 -0400

> On Jul 29, 2020, at 1:41 PM, Michael Heerdegen <michael_heerdegen <at> web.de> wrote:
> 
> Yuan Fu <casouri <at> gmail.com> writes:
> 
>> To reproduce the issue, evaluate
>> 
>> (advice-add 'backward-delete-char-untabify :after 'ignore)
>> 
>> and hit backspace (which should call backward-delete-char-untabify), and
>> an error occurs: apply: Wrong number of arguments: (1 . 2), 0
> 
> Had to think about it.  But it's expected I think: `ignore' is
> interactive, and as documented, its interactive spec overwrites the
> interactive spec of the original function.  And it doesn't fit.
> 
> So everything behaves as documented, it's your specified after advice
> that causes the problem.  Right?
> 
> Michael.

Thanks. I first advised with another interactive function and found this problem. Ignore is just an example. Once I remove the advice the problem went away. I’ll close this report now. 

Yuan

Message #16 received at 42590-done <at> debbugs.gnu.org (full text, mbox):

From: Yuan Fu <casouri <at> gmail.com>
To: 42590-done <at> debbugs.gnu.org
Subject: Fwd: bug#42590: 27.0.91; Advice error for interactive commands
Date: Wed, 29 Jul 2020 15:22:36 -0400

[Message part 1 (text/plain, inline)]

> Begin forwarded message:
> 
> From: Yuan Fu <casouri <at> gmail.com>
> Subject: Re: bug#42590: 27.0.91; Advice error for interactive commands
> Date: July 29, 2020 at 3:21:52 PM GMT-4
> To: Michael Heerdegen <michael_heerdegen <at> web.de>
> Cc: 42590 <at> debbugs.gnu.org
> 
> 
> 
>> On Jul 29, 2020, at 1:41 PM, Michael Heerdegen <michael_heerdegen <at> web.de> wrote:
>> 
>> Yuan Fu <casouri <at> gmail.com> writes:
>> 
>>> To reproduce the issue, evaluate
>>> 
>>> (advice-add 'backward-delete-char-untabify :after 'ignore)
>>> 
>>> and hit backspace (which should call backward-delete-char-untabify), and
>>> an error occurs: apply: Wrong number of arguments: (1 . 2), 0
>> 
>> Had to think about it.  But it's expected I think: `ignore' is
>> interactive, and as documented, its interactive spec overwrites the
>> interactive spec of the original function.  And it doesn't fit.
>> 
>> So everything behaves as documented, it's your specified after advice
>> that causes the problem.  Right?
>> 
>> Michael.
> 
> Thanks. I first advised with another interactive function and found this problem. Ignore is just an example. Once I remove the advice the problem went away. I’ll close this report now. 
> 
> Yuan

[Message part 2 (text/html, inline)]

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