> From: Kenichi Handa <ha...@m17n.org>
> Date: Thu, 26 Aug 2010 10:10:05 +0900
>
> I've just committed changes to trunk for Arabic shaping. If
> there're any Arabic users in this list, please check the
> displaying of Arabic text. On GNU/Linux system, you must
> compile Emacs with libotf and m17n-lib (configure script
> should detect them automatically).
Thanks. However, today's build behaves very strangely in a GUI
session on MS-Windows. For starters, cursor motion seems to jump
across many characters in the "Arabic" line of etc/HELLO. For
example, typing C-f in that line, I first move one character at a time
across "Arabic", as expected, then the cursor jumps to the right paren
of the leftmost parenthesized part, again as expected, and then I see
the following strange behavior:
. C-f moves one character to the left, to buffer position 758, as
expected.
. the next C-f jumps across many characters on the screen and lands
on position 764.
. another C-f jumps to what is reported as position 765, but on the
screen those are several characters, maybe 5 or 6.
. another C-f moves to the left paren at position 766, as expected.
. yet another C-f moves to position 767, but on the screen the
cursor jumps back into one of the characters it jumped across when
it landed on position 765 two C-f keypresses earlier.
. if I type C-b 4 times from this point, I enter a "trap", whereby
typing C-b jumps between two characters, whose buffer positions
are 764 and 765. The only way to get out of the trap is with C-a
or C-e or C-f.
I don't read Arabic, so I cannot really say whether any of this is
expected behavior. (The "trap" with C-b is certainly not the expected
behavior.) Do you see anything similar on X?
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