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Re: Strange display behavior after filling

From: YAMAMOTO Mitsuharu
Subject: Re: Strange display behavior after filling
Date: Wed, 19 Apr 2006 10:37:17 +0900
User-agent: Wanderlust/2.14.0 (Africa) SEMI/1.14.6 (Maruoka) FLIM/1.14.6 (Marutamachi) APEL/10.6 Emacs/22.0.50 (sparc-sun-solaris2.8) MULE/5.0 (SAKAKI)

>>>>> On Tue, 18 Apr 2006 13:57:46 +0200, address@hidden (Kim F. Storm) said:

> Please test if this gives good results, or if it has some bad
> effects on existing features....

I tried the patch, and I found another case that shows a similar

  1. emacs -D -q  (not -Q to show the message in *scratch*)
  2. M-q
  3. M-< C-e C-d C-e C-d
     Then the message ";; This buffer ... own buffer." is shown in one line.
  4. M-< C-u 1 C-v
  5. M-q
  6. C-p C-n C-n

The examples I've shown may look artificial, but I sometimes
experience some redisplay glitches such as violation of the assertion
"IT_BYTEPOS (*it) == CHAR_TO_BYTE (IT_CHARPOS (*it))" in
set_iterator_to_next, or partial octal representation of a multibyte
character after fill operations.  (The buffer contents seems to be
correct because C-l fixes redisplay in these cases.)  So I was trying
to find reliably reproducible cases.

                                     YAMAMOTO Mitsuharu

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