GNU bug report logs - #11199
24.0.95; killing right-to-left text at eob leads to inconsistent state

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From: YAMAMOTO Mitsuharu <mituharu <at> math.s.chiba-u.ac.jp>
To: Eli Zaretskii <eliz <at> gnu.org>
Cc: Michael Welsh Duggan <md5i <at> md5i.com>, 11199 <at> debbugs.gnu.org
Subject: bug#11199: 24.0.95; killing right-to-left text at eob leads to inconsistent state
Date: Mon, 09 Apr 2012 18:48:16 +0900

>>>>> On Mon, 09 Apr 2012 12:10:09 +0300, Eli Zaretskii <eliz <at> gnu.org> said:

> I cannot figure out where these two numbers, 309 and 313, come from.
> If I repeat the recipe and look at the glyph matrix _before_ C-k,
> there are no such buffer positions anywhere in sight there.

I guess this just comes from some white space difference introduced by
copy-and-paste.

> Also, please verify that you see the same buffer positions in the
> glyph matrix as I do.  Here's a GDB session I used to this end:

I get the same results on Mac OS X 10.7.3, X11 build.

>   (gdb) pmtxrows w->current_matrix
>   0: edges=(1,78),r2l=0,cont=0,trunc=(0,0),at_zv=0
>   1: edges=(78,141),r2l=0,cont=0,trunc=(0,0),at_zv=0
>   2: edges=(141,191),r2l=0,cont=0,trunc=(0,0),at_zv=0
>   3: edges=(191,192),r2l=0,cont=0,trunc=(0,0),at_zv=0
>   4: edges=(192,199),r2l=0,cont=0,trunc=(0,0),at_zv=0
>   5: edges=(199,237),r2l=0,cont=0,trunc=(0,0),at_zv=0
>   6: edges=(237,305),r2l=0,cont=0,trunc=(0,0),at_zv=0
>   7: edges=(305,309),r2l=0,cont=0,trunc=(0,0),at_zv=1
(snip)

What is shown by 

  (gdb) p w->current_matrix->rows[6].end.pos

at this stage?  I get

  $7 = {
    charpos = 308, 
    bytepos = 311
  }

and it looks "out of sync" because edges=(237,305) for the 6th row.
I hope this is also reproducible at your side.

				     YAMAMOTO Mitsuharu
				mituharu <at> math.s.chiba-u.ac.jp

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