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C-u M-C-x and pushnew

From: Maks Romih
Subject: C-u M-C-x and pushnew
Date: 16 Feb 2006 12:52:52 +0100

This bug report will be sent to the Free Software Foundation,
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Please write in English, because the Emacs maintainers do not have
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In GNU Emacs 21.4.1 (i386-msvc-nt5.0.2195)
 of 2005-09-19 on MAKSR2
configured using `configure --with-msvc (12.00)'
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: SLV
  locale-coding-system: iso-8859-2
  default-enable-multibyte-characters: t

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

It's not a heavy bug, but it's simple to ilustrate and maybe indicates
some other instabilities.

1. Open a new temporary buffer with C-x b tmp
2. Set it to emacs-lisp-mode with M-x emacs-lisp-mode
3. Exactly from the left side enter the following lines

(let (x)
  (pushnew 'a x))

(let (x)
  (push 'a x))

4. Now press the key combination C-u M-C-x anywhere inside the first
   let that spans the first two lines. It protests with
   "edebug-match-symbol: edebug-keywordp is not a form-spec or
   function "

5. If you try the same function inside the second let, it works
   fine. It instruments the code and steps to firs line.

Recent input:
e t SPC ( m ) <return> <tab> <help-echo> ( a i f SPC 
1 SPC ' b r a v o ) ) <return> C-p C-u C-M-x q C-n 
C-n C-n C-n C-f C-f C-f C-f C-f C-h f <return> C-x 
o C-e C-b C-b C-b <return> C-x k M-f <backspace> <backspace> 
<backspace> C-h f <return> C-a C-u C-M-x q C-n C-p 
C-x o C-h f M-p M-p M-n M-n p u s h n e w <return> 
C-e C-b C-b C-b <return> C-x k <help-echo> <down-mouse-1> 
<mouse-1> q M-x r e p r <backspace> o r <tab> <ret

Recent messages:
Edebug: edebug-anon13

Back to top level.
Type C-x 1 to remove help window.  C-M-v to scroll the help.
Edebug: edebug-anon14

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