Subject: Re: bug#10304: 24.0.92: display bug

From: Lars Magne Ingebrigtsen <[email-masked]>
Date: Sat, 05 Jan 2013 09:38:00 +0100

Ok, I got a display bug, and it was of the same time as before: After
scrolling, area after the end of the buffer wasn't cleared, leaving the
image.

I switched on trace-redisplay, paged back and forth, which was still
buggy, and then did a matrix dump.

Then the window fixed itself suddenly without me doing anything.

Here's the output from the log file.

redisplay_internal 0
0x372ff70 (*Summary nntp+news.gmane.org:gwene.org.jwz.blog*): same window start
0x372ff70 (*Summary nntp+news.gmane.org:gwene.org.jwz.blog*): 1
0x5343aa8 (*Article nntp+news.gmane.org:gwene.org.jwz.blog*): same window start
0x5343aa8 (*Article nntp+news.gmane.org:gwene.org.jwz.blog*): 1
0x5168d70 (sendmail.el): same window start
0x5168d70 (sendmail.el): 1
0x4bc23a0 (smtpmail.el): same window start
0x4bc23a0 (smtpmail.el): 1
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_internal 0
0x5343aa8 (*Article nntp+news.gmane.org:gwene.org.jwz.blog*): forced window start
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_internal 0
0x5343aa8 (*Article nntp+news.gmane.org:gwene.org.jwz.blog*): forced window start
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_internal 0
0x372ff70 (*Summary nntp+news.gmane.org:gwene.org.jwz.blog*): same window start
0x372ff70 (*Summary nntp+news.gmane.org:gwene.org.jwz.blog*): 1
0x5343aa8 (*Article nntp+news.gmane.org:gwene.org.jwz.blog*): same window start
0x5343aa8 (*Article nntp+news.gmane.org:gwene.org.jwz.blog*): 1
0x35c3880 ( *Minibuf-1*): same window start
0x35c3880 ( *Minibuf-1*): 1
0x5168d70 (sendmail.el): same window start
0x5168d70 (sendmail.el): 1
0x4bc23a0 (smtpmail.el): same window start
0x4bc23a0 (smtpmail.el): 1
redisplay_internal 0
0x35c3880 ( *Minibuf-1*): same window start
0x35c3880 ( *Minibuf-1*): 1
redisplay_preserve_echo_area (8)
redisplay_internal 0
trying display optimization 1
0x35c3880 ( *Minibuf-1*): optimization 1
redisplay_internal 0
0x35c3880 ( *Minibuf-1*): same window start
0x35c3880 ( *Minibuf-1*): 1
redisplay_preserve_echo_area (8)
redisplay_internal 0
trying display optimization 1
0x35c3880 ( *Minibuf-1*): optimization 1
PT = 171, BEGV = 1. ZV = 176
Cursor x = 0, y = 20, hpos = 0, vpos = 1
=============================================
  0: (1) ''
  0: (1) ' '
  0: (1) ''
  1: (1) ''
  1: (1) 'Link '
  1: (1) ''
  2: (1) ''
  2: (1) ' '
  2: (1) ''
  3: (1) ''
  3: (1) ' '
  3: (1) ''
  4: (1) ''
  4: (1) ' '
  4: (1) ''
  5: (1) ''
  5: (1) ' '
  5: (1) ''
  6: (1) ''
  6: (1) ' '
  6: (1) ''
  7: (1) ''
  7: (1) ' '
  7: (1) ''
  8: (1) ''
  8: (1) ' '
  8: (1) ''
  9: (1) ''
  9: (1) ' '
  9: (1) ''
 10: (1) ''
 10: (1) ' '
 10: (1) ''
 11: (1) ''
 11: (1) ' '
 11: (1) ''
 12: (1) ''
 12: (1) ' '
 12: (1) ''
 13: (1) ''
 13: (1) ' '
 13: (1) ''
 14: (1) ''
 14: (1) ' '
 14: (1) ''
 15: (1) ''
 15: (1) ' '
 15: (1) ''
 16: (1) ''
 16: (1) ' '
 16: (1) ''
 17: (1) ''
 17: (1) ' '
 17: (1) ''
 18: (1) ''
 18: (1) ' '
 18: (1) ''
 19: (1) ''
 19: (1) ' '
 19: (1) ''
 20: (1) ''
 20: (1) ' '
 20: (1) ''
 21: (1) ''
 21: (1) ' '
 21: (1) ''
 22: (1) ''
 22: (1) ' '
 22: (1) ''
 23: (1) ''
 23: (1) ' '
 23: (1) ''
 24: (1) ''
 24: (1) ' '
 24: (1) ''
 25: (1) ''
 25: (1) ' '
 25: (1) ''
 26: (1) ''
 26: (1) ' '
 26: (1) ''
 27: (1) ''
 27: (1) ' '
 27: (1) ''
 28: (1) ''
 28: (1) ' '
 28: (1) ''
 29: (1) ''
 29: (1) ' '
 29: (1) ''
 30: (1) ''
 30: (1) ' '
 30: (1) ''
 31: (1) ''
 31: (1) ' '
 31: (1) ''
 32: (1) ''
 32: (1) ' '
 32: (1) ''
 33: (1) ''
 33: (1) ' '
 33: (1) ''
 34: (1) ''
 34: (1) ' '
 34: (1) ''
 35: (1) ''
 35: (1) ' '
 35: (1) ''
 36: (1) ''
 36: (1) ' '
 36: (1) ''
 37: (1) ''
 37: (1) ' '
 37: (1) ''
 38: (1) ''
 38: (1) ' '
 38: (1) ''
 39: (1) ''
 39: (1) ' '
 39: (1) ''
 40: (1) ''
 40: (1) ' '
 40: (1) ''
 41: (1) ''
 41: (1) ' '
 41: (1) ''
 42: (1) ''
 42: (1) ' '
 42: (1) ''
 43: (0) ''
 43: (0) ''
 43: (0) ''
 44: (0) ''
 44: (0) ''
 44: (0) ''
 45: (0) ''
 45: (0) ''
 45: (0) ''
 46: (0) ''
 46: (0) ''
 46: (0) ''
 47: (0) ''
 47: (0) ''
 47: (0) ''
 48: (0) ''
 48: (0) ''
 48: (0) ''
 49: (0) ''
 49: (0) ''
 49: (0) ''
 50: (0) ''
 50: (0) ''
 50: (0) ''
 51: (0) ''
 51: (0) ''
 51: (0) ''
 52: (0) ''
 52: (0) ''
 52: (0) ''
 53: (0) ''
 53: (0) ''
 53: (0) ''
 54: (0) ''
 54: (0) ''
 54: (0) ''
 55: (0) ''
 55: (0) ''
 55: (0) ''
 56: (0) ''
 56: (0) ''
 56: (0) ''
 57: (0) ''
 57: (0) ''
 57: (0) ''
 58: (0) ''
 58: (0) ''
 58: (0) ''
 59: (0) ''
 59: (0) ''
 59: (0) ''
 60: (0) ''
 60: (0) ''
 60: (0) ''
 61: (0) ''
 61: (0) ''
 61: (0) ''
 62: (0) ''
 62: (0) ''
 62: (0) ''
 63: (0) ''
 63: (0) ''
 63: (0) ''
 64: (0) ''
 64: (0) ''
 64: (0) ''
 65: (0) ''
 65: (0) ''
 65: (0) ''
 66: (0) ''
 66: (0) ''
 66: (0) ''
 67: (0) ''
 67: (0) ''
 67: (0) ''
 68: (0) ''
 68: (0) ''
 68: (0) ''
 69: (0) ''
 69: (0) ''
 69: (0) ''
 70: (1) ''
 70: (1) ' 1:---  . news:g.o.j.blog More Tea, You Monster? (1...   Bot L8     (Article)     '
 70: (1) ''
redisplay_internal 0
0x372ff70 (*Summary nntp+news.gmane.org:gwene.org.jwz.blog*): same window start
0x372ff70 (*Summary nntp+news.gmane.org:gwene.org.jwz.blog*): 1
0x5343aa8 (*Article nntp+news.gmane.org:gwene.org.jwz.blog*): same window start
0x5343aa8 (*Article nntp+news.gmane.org:gwene.org.jwz.blog*): 1
0x5168d70 (sendmail.el): same window start
0x5168d70 (sendmail.el): 1
0x4bc23a0 (smtpmail.el): same window start
0x4bc23a0 (smtpmail.el): 1
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (13)
redisplay_internal 0
0x372ff70 (*Summary nntp+news.gmane.org:gwene.org.jwz.blog*): same window start
0x372ff70 (*Summary nntp+news.gmane.org:gwene.org.jwz.blog*): 1
0x5343aa8 (*Article nntp+news.gmane.org:gwene.org.jwz.blog*): same window start
0x5343aa8 (*Article nntp+news.gmane.org:gwene.org.jwz.blog*): 1
0x5168d70 (sendmail.el): same window start
0x5168d70 (sendmail.el): 1
0x4bc23a0 (smtpmail.el): same window start
0x4bc23a0 (smtpmail.el): 1
redisplay_preserve_echo_area (13)
redisplay_internal 0
0x372ff70 (*Summary nntp+news.gmane.org:gwene.org.jwz.blog*): same window start
0x372ff70 (*Summary nntp+news.gmane.org:gwene.org.jwz.blog*): 1
0x5343aa8 (*Article nntp+news.gmane.org:gwene.org.jwz.blog*): same window start
0x5343aa8 (*Article nntp+news.gmane.org:gwene.org.jwz.blog*): 1
0x5168d70 (sendmail.el): same window start
0x5168d70 (sendmail.el): 1
0x4bc23a0 (smtpmail.el): same window start
0x4bc23a0 (smtpmail.el): 1
redisplay_preserve_echo_area (13)
redisplay_internal 0
0x372ff70 (*Summary nntp+news.gmane.org:gwene.org.jwz.blog*): same window start
0x372ff70 (*Summary nntp+news.gmane.org:gwene.org.jwz.blog*): 1
0x5343aa8 (*Article nntp+news.gmane.org:gwene.org.jwz.blog*): same window start
0x5343aa8 (*Article nntp+news.gmane.org:gwene.org.jwz.blog*): 1
0x5168d70 (sendmail.el): same window start
0x5168d70 (sendmail.el): 1
0x4bc23a0 (smtpmail.el): same window start
0x4bc23a0 (smtpmail.el): 1
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
expose_frame (796, 696, 24, 484)
expose_window (796, 696, 24, 464)
expose_window (796, 1160, 24, 20)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_internal 0
0x372ff70 (*Summary nntp+news.gmane.org:gwene.org.jwz.blog*): forced window start
0x5343aa8 (*Article nntp+news.gmane.org:gwene.org.jwz.blog*): forced window start
0x5168d70 (sendmail.el): same window start
0x5168d70 (sendmail.el): 1
0x4bc23a0 (smtpmail.el): same window start
0x4bc23a0 (smtpmail.el): 1
redisplay_preserve_echo_area (8)
redisplay_internal 0
redisplay_internal 0
0x372ff70 (*Summary nntp+news.gmane.org:gwene.org.jwz.blog*): same window start
0x372ff70 (*Summary nntp+news.gmane.org:gwene.org.jwz.blog*): 1
0x5343aa8 (*Article nntp+news.gmane.org:gwene.org.jwz.blog*): same window start
0x5343aa8 (*Article nntp+news.gmane.org:gwene.org.jwz.blog*): 1
0x35c3880 ( *Minibuf-1*): same window start
0x35c3880 ( *Minibuf-1*): 1
0x5168d70 (sendmail.el): same window start
0x5168d70 (sendmail.el): 1
0x4bc23a0 (smtpmail.el): same window start
0x4bc23a0 (smtpmail.el): 1
redisplay_internal 0
0x35c3880 ( *Minibuf-1*): same window start
0x35c3880 ( *Minibuf-1*): 1
redisplay_preserve_echo_area (8)
redisplay_internal 0
trying display optimization 1
0x35c3880 ( *Minibuf-1*): optimization 1
redisplay_internal 0
0x35c3880 ( *Minibuf-1*): same window start
0x35c3880 ( *Minibuf-1*): 1
redisplay_preserve_echo_area (8)
redisplay_internal 0
trying display optimization 1
0x35c3880 ( *Minibuf-1*): optimization 1

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