GNU bug report logs - #8432
24.0.50; Eldoc highlighting is confused by dolist and dotimes

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

From: Stephen Berman <stephen.berman <at> gmx.net>
To: bug-gnu-emacs <at> gnu.org
Subject: 24.0.50; Eldoc highlighting is confused by dolist and dotimes
Date: Wed, 06 Apr 2011 10:51:13 +0200

1. emacs -Q
2. In *scratch* insert the following sexp:
   (dolist (e '(a b c))
     (message "Done")
     (message "Done")
     (message "Done"))
3. M-x turn-on-eldoc-mode
4. Putting point on (really, right after) the space after "dolist" makes
   the echo area display this:  
   dolist: ((VAR LIST [RESULT]) BODY...)
5. Move point one character to the right, onto (really, right after) the
   left parenthesis before "e".
   => Now "VAR" is highlighted in the echo area.  Move point one more
   character to the right and "VAR" is no longer highlighted (though
   point is now really on/after the argument VAR of dolist).  There is
   no highlighting as point moves further rightwards, until it is at the
   end of the line, right after the closing parenthesis of the argument
   list: now "VAR" is highlighted again.
6. Move point to column 0 of the first "message" sexp.
   => Now "LIST" is highlighted in the echo area.
7. Move point to column 0 of the second "message" sexp.
   => Now "[RESULT]" is highlighted in the echo area.
8. Move point to column 0 of the third "message" sexp.
   => Now "BODY" is highlighted in the echo area.

The same (mis)highlighting pattern arises with dotimes.


In GNU Emacs 24.0.50.1 (i686-suse-linux-gnu, GTK+ Version 2.20.1)
 of 2011-04-03 on escher
Windowing system distributor `The X.Org Foundation', version 11.0.10800000
configured using `configure  '--without-toolkit-scroll-bars' 'CFLAGS=-g -O2 -fno-optimize-sibling-calls''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: en_US.UTF-8
  value of $XMODIFIERS: @im=local
  locale-coding-system: utf-8-unix
  default enable-multibyte-characters: t

Message #8 received at 8432 <at> debbugs.gnu.org (full text, mbox):

From: Alex <agrambot <at> gmail.com>
To: Stephen Berman <stephen.berman <at> gmx.net>
Cc: 8432 <at> debbugs.gnu.org
Subject: Re: bug#8432: 24.0.50;
 Eldoc highlighting is confused by dolist and dotimes
Date: Thu, 08 Sep 2016 18:15:50 -0600

found 8432 25.1
quit

Stephen Berman <stephen.berman <at> gmx.net> writes:

> 1. emacs -Q
> 2. In *scratch* insert the following sexp:
>    (dolist (e '(a b c))
>      (message "Done")
>      (message "Done")
>      (message "Done"))
> 3. M-x turn-on-eldoc-mode
> 4. Putting point on (really, right after) the space after "dolist" makes
>    the echo area display this:  
>    dolist: ((VAR LIST [RESULT]) BODY...)
> 5. Move point one character to the right, onto (really, right after) the
>    left parenthesis before "e".
>    => Now "VAR" is highlighted in the echo area.  Move point one more
>    character to the right and "VAR" is no longer highlighted (though
>    point is now really on/after the argument VAR of dolist).  There is
>    no highlighting as point moves further rightwards, until it is at the
>    end of the line, right after the closing parenthesis of the argument
>    list: now "VAR" is highlighted again.
> 6. Move point to column 0 of the first "message" sexp.
>    => Now "LIST" is highlighted in the echo area.
> 7. Move point to column 0 of the second "message" sexp.
>    => Now "[RESULT]" is highlighted in the echo area.
> 8. Move point to column 0 of the third "message" sexp.
>    => Now "BODY" is highlighted in the echo area.
>
> The same (mis)highlighting pattern arises with dotimes.

I can reproduce this in Emacs 25.1.

Message #15 received at 8432 <at> debbugs.gnu.org (full text, mbox):

From: Stefan Kangas <stefan <at> marxist.se>
To: Alex <agrambot <at> gmail.com>
Cc: 8432 <at> debbugs.gnu.org, Stephen Berman <stephen.berman <at> gmx.net>
Subject: Re: bug#8432: 24.0.50;
 Eldoc highlighting is confused by dolist and dotimes
Date: Sun, 16 Aug 2020 03:26:29 -0700

found 8432 28.0.50
thanks

Alex <agrambot <at> gmail.com> writes:

> found 8432 25.1
> quit
>
> Stephen Berman <stephen.berman <at> gmx.net> writes:
>
>> 1. emacs -Q
>> 2. In *scratch* insert the following sexp:
>>    (dolist (e '(a b c))
>>      (message "Done")
>>      (message "Done")
>>      (message "Done"))
>> 3. M-x turn-on-eldoc-mode
>> 4. Putting point on (really, right after) the space after "dolist" makes
>>    the echo area display this:
>>    dolist: ((VAR LIST [RESULT]) BODY...)
>> 5. Move point one character to the right, onto (really, right after) the
>>    left parenthesis before "e".
>>    => Now "VAR" is highlighted in the echo area.  Move point one more
>>    character to the right and "VAR" is no longer highlighted (though
>>    point is now really on/after the argument VAR of dolist).  There is
>>    no highlighting as point moves further rightwards, until it is at the
>>    end of the line, right after the closing parenthesis of the argument
>>    list: now "VAR" is highlighted again.
>> 6. Move point to column 0 of the first "message" sexp.
>>    => Now "LIST" is highlighted in the echo area.
>> 7. Move point to column 0 of the second "message" sexp.
>>    => Now "[RESULT]" is highlighted in the echo area.
>> 8. Move point to column 0 of the third "message" sexp.
>>    => Now "BODY" is highlighted in the echo area.
>>
>> The same (mis)highlighting pattern arises with dotimes.
>
> I can reproduce this in Emacs 25.1.

Still reproducible on current master.

Best regards,
Stefan Kangas

Message #20 received at 8432 <at> debbugs.gnu.org (full text, mbox):

From: Michael Heerdegen <michael_heerdegen <at> web.de>
To: Stefan Kangas <stefan <at> marxist.se>
Cc: 8432 <at> debbugs.gnu.org, Stephen Berman <stephen.berman <at> gmx.net>,
 Alex <agrambot <at> gmail.com>
Subject: Re: bug#8432: 24.0.50; Eldoc highlighting is confused by dolist and
 dotimes
Date: Sun, 04 Oct 2020 01:52:17 +0200

Stefan Kangas <stefan <at> marxist.se> writes:

> Still reproducible on current master.

I guess the culprit is the same piece of code as in 27229 - the handling
of "..." args in `elisp--highlight-function-argument'.  It always cycles
the highlighted arg as it is correct for some cases, e.g. `setq'.

Michael.

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