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Re: Composing Hebrew diacriticals
From: |
Kenichi Handa |
Subject: |
Re: Composing Hebrew diacriticals |
Date: |
Fri, 14 May 2010 20:58:00 +0900 |
In article <address@hidden>, Eli Zaretskii <address@hidden> writes:
> > Eli, please check the comments of set_iterator_to_next, and
> > verify that I'm doing the right thing.
> It looks okay at a first glance, thank you!
> In the HELLO buffer, the RLM character is not composed with the
> following parenthesis, though. Is this a separate problem?
Currently Emacs' category of RLM (U+200F) is not '^'
(Combining). So it is not composed with the previous base
character.
BTW, I don't know which is better; showing RLM (and the
other control characters) to users or not. If we show it,
the display is a little bit annoying. If we hide it, it
gets very difficult for users to manually edit it.
> I will work on the issues you raised in the comments. For now, I have
> just one response: in this fragment from set_iterator_to_next:
> /* Update IT's char/byte positions to point the first
> character of the next grapheme cluster, or to the
> character visually after the current composition. */
> #if 0
> /* Is it ok to do this directly? */
> IT_CHARPOS (*it) += it->cmp_it.nchars;
> IT_BYTEPOS (*it) += it->cmp_it.nbytes;
> #else
> /* Or do we have to call bidi_get_next_char_visually
> repeatedly (perhaps not to confuse some internal
> state of bidi_it)? At least we must do this if we
> have consumed all grapheme clusters in the current
> composition because the next character will be in the
> different bidi level. */
> for (i = 0; i < it->cmp_it.nchars; i++)
> bidi_get_next_char_visually (&it->bidi_it);
> the "#else" part is doing TRT. You cannot jump to a different place
> in the buffer/string behind the back of bidi_get_next_char_visually,
> because that would violate the integrity of its internal cache, which
> must correspond to the buffer/string positions 1:1.
Ok, I see.
> > I have not yet committed proper codes for Hebrew
> > composition. I'm now testing with this simple version.
> >
> > (let ((pattern "[\u05D0-\u05F2][\u0591-\u05BF\u05C1-\u05C5\u05C7]+"))
> > (set-char-table-range
> > composition-function-table '(#x591 . #x5C7)
> > (list (vector pattern 1 'font-shape-gstring)
> > ["[\u0591-\u05C7]" 0 font-shape-gstring]))
> > (set-char-table-range
> > composition-function-table #x5C0 nil)
> > (set-char-table-range
> > composition-function-table #x5C6 nil))
> Could you please look at the message I posted in
> http://lists.gnu.org/archive/html/emacs-devel/2010-05/msg00251.html?
> I still see the infloop, with the current trunk, even when
> bidi-display-reordering is set to nil, after I type BET and DAGESH, as
> described in that message. What kind of problems in the information
> that Uniscribe returns to Emacs could cause such a loop?
I'm now investigating that problem.
But, as I don't have Emacs on Windows now, all I can do is
just guessing.
To debug C code of Emacs on Windows, which environment
(cygwin, mingw, ...) is good? It will be good that there's
an instruction simply showing just one method by saying
something like:
(1) Download this and this and this... (with actual URLs).
(2) Install this, then do this, then install this, then do this...
(3) Build Emacs under this terminal program.
---
Kenichi Handa
address@hidden
- Re: Composing Hebrew diacriticals, (continued)
- Re: Composing Hebrew diacriticals, Kenichi Handa, 2010/05/10
- Re: Composing Hebrew diacriticals, Kenichi Handa, 2010/05/11
- Re: Composing Hebrew diacriticals, Eli Zaretskii, 2010/05/11
- Re: Composing Hebrew diacriticals, Kenichi Handa, 2010/05/12
- Re: Composing Hebrew diacriticals, Eli Zaretskii, 2010/05/12
- Re: Composing Hebrew diacriticals, Juanma Barranquero, 2010/05/12
- Re: Composing Hebrew diacriticals, Eli Zaretskii, 2010/05/12
- Re: Composing Hebrew diacriticals, Kenichi Handa, 2010/05/12
- Re: Composing Hebrew diacriticals, Kenichi Handa, 2010/05/14
- Re: Composing Hebrew diacriticals, Eli Zaretskii, 2010/05/14
- Re: Composing Hebrew diacriticals,
Kenichi Handa <=
- Re: Composing Hebrew diacriticals, Eli Zaretskii, 2010/05/14
- Re: Composing Hebrew diacriticals, Eli Zaretskii, 2010/05/14
- Message not available
- Re: Composing Hebrew diacriticals, Kenichi Handa, 2010/05/14
- Re: Composing Hebrew diacriticals, Yair F, 2010/05/15
- Re: Composing Hebrew diacriticals, Kenichi Handa, 2010/05/17
- Re: Composing Hebrew diacriticals, Eli Zaretskii, 2010/05/17
- Re: Composing Hebrew diacriticals, Kenichi Handa, 2010/05/17
- Re: Composing Hebrew diacriticals, Yair F, 2010/05/17
- Re: Composing Hebrew diacriticals, Kenichi Handa, 2010/05/19
- Re: Composing Hebrew diacriticals, Kenichi Handa, 2010/05/24