[XeTeX] Flipping parentheses/brackets in RTL context
Dear All,
I am preparing a book with small fragments of Hebrew and Arabic embedded
into a Russian text. In the process of this work I have upgraded from
XeTeX, Version 3.1415926-2.2-0.9997.4 I used previously to XeTeX,
Version 3.1415926-2.5-0..3 from TeXLive 2013 which goes with
openSUSE 11.3. Everything seems OK, except that parentheses in RTL
context are no longer mirrorred, as they used to. I am attaching a
minimal example which demonstrates the problem.
I also have attempted to compile the same file with LuaLaTeX (defining
\beginR as \luatexpardir TRT\luatextextdir TRT), but it produces
essentially the same result (which is natural, since luaTeX, unlike
XeTeX, seems to know absolutely nothing about the difference between
LTR, RTL and neutral characters).
Googling and searching the archives of this list gave me no clues. So
does anybody know if it is possible to resolve the problem and get the
same output as with older XeTeX?
--
Regards,
Alexey Kryukov
Moscow State University
Faculty of History
\documentclass{book}
\TeXXeTstate=1
\usepackage{fontspec}
\newfontfamily{\hebrewfont}[
Script=Hebrew
]{Ezra SIL}
%\def\beginR{\luatexpardir TRT\luatextextdir TRT}
\begin{document}
\hebrewfont
\beginR â«×Ö¼Ö·×ֲשֶׁר ×ַּתַ×Ö°× ï¬µ ()×ְּשֶׁ×ָּתַ×Ö°× ï¬µ() ××× ×ï¬ª× ×שׁתק.
\end{document}
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Re: [XeTeX] xetex and the unicode bidirectional algorithm.
I'm sensing, I think, that you don't like that font, Khaled? Dominik :-) 2013/12/5 Khaled Hosny : > > >> > Please, please, please, never ever use GNU free font for Arabic; it is > >> > the most hideous, crappy and useless un-Arabic font ever created, my > >> > blood boils every time I see it in use. > >> > > >> Could you summarize what is wrong and report it? > > > > All of it, the Arabic range is utter crap. > > > >> Steve White will > >> certainly fix it (unless it is better toreplace the whole Arabic > >> block). > > > > I did, and even offered to work on replacement, but the offer was turned > > down. > > > >> I see problems with dochachmee he, Urdu words as بھآرت and ؔٹھیک are > >> not displayed properly. > > > > There is no point in looking at the microlevel, the whole thing is > > worthless garbage and should be tossed in the nearest trash bin. Whoever > > designed it has absolutely no idea about Arabic and its design, I take > > it personally and find this garbage an insult to the Arabic script. Show > > a text typeset with it to an Urdu speaker and he is likely to vomit in > > disgust. > > > > -- Subscriptions, Archive, and List information, etc.: http://tug.org/mailman/listinfo/xetex
Re: [XeTeX] Seeking short examples of complex renderings
On 06/12/2013 20:18, Khaled Hosny wrote: Both Pango and XeTeX use HarfBuzz which in turn can use Graphite, so I think HarfBuzz and Graphite are the proper places for these tests (and both already have test suites in place) This is true, but there *are* higher level applications, like XeTeX and SILE and Gtk and Firefox and so on... Instead of comparing images, which can be affected by things unrelated to layout like hinting, it would be better to compare glyph IDs with or without glyph positioning, check HarfBuzz and Graphite test suites for examples. ...and so I don't think that having low-level tests obviates the need for high-level ones. "My script is meant to look like *this* but your application renders it like *that*" is as much a meaningful test as f499fbc23865022234775c43503bba2e63978fe1.ttf:U+09B0,U+09CD,U+09A5,U+09CD,U+09AF,U+09C0:[gid1=0+1320|gid13=0+523|gid18=0+545] - and possibly more accessible too. And in fact it's precisely because, say, SILE uses Pango which uses Harfbuzz which uses Graphite, it's useful to have an easy way to see who's getting it wrong. If SILE messes up a rendering, I want to have some text I can throw at pango-view to see if that gets it right. Sorting out the layers is important. For instance, I see that Harfbuzz already has some tests for Hebrew vowel pointings, [*] but running pango-view on these tests produces erroneous output. So how should I describe the problem to Pango developers, other than by having a picture of what Pango *is* generating and what I think it *should* be generating... ...which is basically what I am putting together. [*] or at least it has some files with some pointed Hebrew in it - but I don't see the test suite doing anything with it, nor do I see any expected shapings for any of the texts/ directory. -- Subscriptions, Archive, and List information, etc.: http://tug.org/mailman/listinfo/xetex
Re: [XeTeX] Seeking short examples of complex renderings
On Fri, Dec 06, 2013 at 07:55:07PM +0900, Simon Cozens wrote: > Hello XeTeXers, > > Sorry for a not-entirely-XeTeX-related request but I think there may be some > merit in it for XeTeX in the future. > > I have recently been toying around implementing my own layout engine, and > have started to check that it works nicely with non-Roman scripts. This has > already thrown up a few bugs in pango (which I'm using to do the shaping), > and that's just with scripts that I can read. I am sure there are other > problems in scripts I can't read. > > So I thought it would be a useful thing for people like > pango/xetex/graphite/harfbuzz/other layout and rendering tool developers to > have a visual test suite, a collection of short strings which stress-test > their engines in interesting ways: placement of composing characters, > mandatory ligatures, mixed LTR/RTL, that sort of thing. Both Pango and XeTeX use HarfBuzz which in turn can use Graphite, so I think HarfBuzz and Graphite are the proper places for these tests (and both already have test suites in place), so I’d forward this to the respective developers. > I have started putting a collection together but my own knowledge and > experience is pretty limited. If you can contribute some short Unicode > strings from a language you know which show an interesting rendering > feature, I hope this will be something that can be beneficial to the text > layout community as a whole. > > The test suite at the moment is at > http://simoncozens.github.io/visual-testsuite/testsuite.html > > and you can contribute via github at > http://github.com/simoncozens/visual-testsuite Instead of comparing images, which can be affected by things unrelated to layout like hinting, it would be better to compare glyph IDs with or without glyph positioning, check HarfBuzz and Graphite test suites for examples. Regards, Khaled -- Subscriptions, Archive, and List information, etc.: http://tug.org/mailman/listinfo/xetex
Re: [XeTeX] Seeking short examples of complex renderings
Hi, I have an extensive test of Devanagari at http://hroch486.icpf.cas.cz/xetex-test/, the same test was repeated with the different revisions of the GNU FreeFont and a few more fonts for comparison. The page contains both the results of the tests that failed as well as the tests that past (now all bugs are fixed). Notice that Indic rendering is really complex and a short test using a single word will not help. There are quite complex words. I can also send you a few Urdu words containing characters not present in Arabic. And Urdu is typeset with Nastaleeq style which causes a lot of difficulties for the engine. 2013/12/6 Simon Cozens : > Hello XeTeXers, > > Sorry for a not-entirely-XeTeX-related request but I think there may be some > merit in it for XeTeX in the future. > > I have recently been toying around implementing my own layout engine, and > have started to check that it works nicely with non-Roman scripts. This has > already thrown up a few bugs in pango (which I'm using to do the shaping), > and that's just with scripts that I can read. I am sure there are other > problems in scripts I can't read. > > So I thought it would be a useful thing for people like > pango/xetex/graphite/harfbuzz/other layout and rendering tool developers to > have a visual test suite, a collection of short strings which stress-test > their engines in interesting ways: placement of composing characters, > mandatory ligatures, mixed LTR/RTL, that sort of thing. > > I have started putting a collection together but my own knowledge and > experience is pretty limited. If you can contribute some short Unicode > strings from a language you know which show an interesting rendering > feature, I hope this will be something that can be beneficial to the text > layout community as a whole. > > The test suite at the moment is at > http://simoncozens.github.io/visual-testsuite/testsuite.html > > and you can contribute via github at > http://github.com/simoncozens/visual-testsuite > > (or just send me an email) > > Thanks! > Simon > > > -- > Subscriptions, Archive, and List information, etc.: > http://tug.org/mailman/listinfo/xetex -- Zdeněk Wagner http://hroch486.icpf.cas.cz/wagner/ http://icebearsoft.euweb.cz -- Subscriptions, Archive, and List information, etc.: http://tug.org/mailman/listinfo/xetex
[XeTeX] Seeking short examples of complex renderings
Hello XeTeXers, Sorry for a not-entirely-XeTeX-related request but I think there may be some merit in it for XeTeX in the future. I have recently been toying around implementing my own layout engine, and have started to check that it works nicely with non-Roman scripts. This has already thrown up a few bugs in pango (which I'm using to do the shaping), and that's just with scripts that I can read. I am sure there are other problems in scripts I can't read. So I thought it would be a useful thing for people like pango/xetex/graphite/harfbuzz/other layout and rendering tool developers to have a visual test suite, a collection of short strings which stress-test their engines in interesting ways: placement of composing characters, mandatory ligatures, mixed LTR/RTL, that sort of thing. I have started putting a collection together but my own knowledge and experience is pretty limited. If you can contribute some short Unicode strings from a language you know which show an interesting rendering feature, I hope this will be something that can be beneficial to the text layout community as a whole. The test suite at the moment is at http://simoncozens.github.io/visual-testsuite/testsuite.html and you can contribute via github at http://github.com/simoncozens/visual-testsuite (or just send me an email) Thanks! Simon -- Subscriptions, Archive, and List information, etc.: http://tug.org/mailman/listinfo/xetex
