dev-luatex September 2009

dev-luatex@ntg.nl

8 participants
11 discussions

Snapshot 20070307
by Taco Hoekwater 10 May '12

10 May '12

Hi all, I decided to do a snapshot now instead of waiting for friday, because I want to start concentrating on something else besides font support issues. What's new: * Non-CID PostScript-based Opentype fonts are now combined over the entire document, and properly subsetted. The code is borrowed from xdvipdfmx with some minor adjustments Adding support for CID-keyed OpenType fonts would not be hard but at the moment I lack example input (and incentive). * A small extension to the virtual fonts structure: you can use f.fonts[1] = { 'id' = 38} to do a backreference to a previously defined font. This saves quite a few computations * There was a bug in the handling of \leaders in the output whereby it's width was taken to be twice what it should be while writing to the PDF, fixed now. * The font inclusion code is cleaned up a bit by Hartmut. * Some compilation problems were fixed. * There is (quite a bit of) debugging information printed out when OTPs are in use, because I am tracking down a bug reported by Idris. The input of each and every OTP step is shown on the terminal in a line line this: [57902][1568][58423][1568][58408][1568][58921] those are the decimal values of ocp i/o characters. If you don't need them, don't worry about it. Happy TeXing, Taco ----- Downloading and installation details: If you go to https://foundry.supelec.fr/frs/?group_id=10 you will see that there are three new released files: * luatex-snapshot-20070307.tar.bz2 This is the source tree. * luatex-snapshot-20070307-win32.zip A cross-compiled (mingw) windows binary. This is a web2c based binary, so it needs a texmf.cnf file (It will NOT work if you have only miktex installed). * luatex-snapshot-20070307-linux-i386.tar.bz2 An intel 32 linux binary (2.6.17)

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XML abilities in LuaTeX
by TeXWorld 19 Nov '09

19 Nov '09

Hello, I'm new to LuaTeX and Lua in general and I try to find tools to process datas stored in XML files. I want to do this with LaTeX (pdfLuaLaTeX in TeXLive 2008) but there's no tool. Contrary to LaTeX, ConTeXt does have abilities to work with XML files. Do you think it could be possible to have LuaTeX equipped with such abilities one day ? I read in the LuaTeX reference that LuaTeX comes with modules such as LuaZIP that is really a good thing. Do you think it would be possible to have something like the LuaXML module added to luatex too ? Jack

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Cron <luatex@vz3> /var/www/luatex.org/www/bin/luatex-svn
by root＠www.metatex.org 21 Sep '09

21 Sep '09

------------------------------------------------------------------------ r3051 | oneiros | 2009-09-20 22:14:53 +0200 (Sun, 20 Sep 2009) | 2 lines Changed paths: M /trunk/.doxygen trim documentation ------------------------------------------------------------------------

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LuaTeX Bug
by Vafa Khalighi 20 Sep '09

20 Sep '09

having $$1+2=3\eqno(1)$$ $$1+2=3\eqno(1)$$ $$1+2=3\eqno(1)$$ $$1+2=3\eqno(1)$$ $$1+2=3\eqno(1)$$ $$1+2=3\eqno(1)$$ $$1+2=3\eqno(1)$$ $$1+2=3\eqno(1)$$ $$1+2=3\eqno(1)$$ \end as the example document and running pdftex and luatex on it, it makes clear that with space between equations is too much when compiled with luatex. both PDFTeX and LuaTeX outputs are attached. -- Vafa

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Bad font scaling
by Barry Schwartz 20 Sep '09

20 Sep '09

I do not know whether this is a luatex bug or a ConTeXt bug. Mark IV seems to be incorrectly scaling and spacing PostScript fonts that have unconventional em-unit-size settings, such as my Sorts Mill Goudy fonts available here: http://www.theleagueofmoveabletype.com/ I presume that in one or more places the conventional value 1000 is hard-coded in, where the setting specified in the font is what should be used.

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problems with the mediabox
by Peter Rolf 18 Sep '09

18 Sep '09

Hi, I still have preflighting problems with the mediabox of luatex. It's accuracy is sufficient for printing, but using the values for a preflight is troublesome. An example: if I define a A4+ paper (303mm x 216mm) I get a mediabox of 303.0mm x 215.999mm. Hans has already restricted the trailing numbers of the trimbox/cropbox values in ConTeXt to adapt the accuracy (else rounding of the mediabox can lead to a bigger trim|cropbox, which is against definition). Anyhow, this is not enough for this example: MediaBox (mm): 303.0x215.999 (0.0/0.0/303.0/215.999) CropBox (mm): 303.0x216.0 (0.0/0.0/303.0/216.0 ) TrimBox (mm): 303.0x216.0 (0.0/0.0/303.0/216.0 ) MediaBox < CropBox|TrimBox So using the same number of digits after the point (%.3f) does not solve the problem. Setting the width to 216.001mm in this example helps, but this is unsatisfying. MediaBox (mm): 303.0x216.0023 (0.0/0.0/303.0/216.0023 ) CropBox (mm): 303.0x216.00101 (0.0/0.0/303.0/216.00101) TrimBox (mm): 303.0x216.00101 (0.0/0.0/303.0/216.00101) If you use some bleeding offset (in the A4+ example normally 3mm on each side) the problem vanishes. But for PDF/X you have to set the crop-|trimbox anyway, regardless if you use a bleeding offset or not. Possible solutions: - read access to the mediabox values, so that rounding errors can be handled - use the same calculation routine for all pdf boxes (e.g. a luatex library function) - ?? Any comments are welcome. Best wishes, Peter

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It seems that harfbuzz people care luatex and xetex a lot...
by Yue Wang 17 Sep '09

17 Sep '09

QUOTE: TeX engines are batch document processors but worth looking into separately. Historically TeX had no shaping engines and basic shaping was done using macro packages and a variety of hacks. More recently though, XeTeX was invented. XeTeX simply outsources the shaping to an external library, ICU or Apple's ATSUI currently. XeTeX is a separate branch of the TeX evolutionary hierarchy than the mainstream pdfTeX though. The XeTeX creator is working on HarfBuzz on behalf of Mozilla now, and plans to port XeTeX to HarfBuzz eventually. In the long term though, pdfTeX's successor luaTeX should be made to do the same thing. There is more to Unicode support than just shaping, and in those areas the TeX engines can gain a lot by building on top of existing libraries. http://behdad.org/text/

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Cron <luatex@vz3> /var/www/luatex.org/www/bin/luatex-svn
by root＠www.metatex.org 17 Sep '09

17 Sep '09

------------------------------------------------------------------------ r3049 | oneiros | 2009-09-16 23:25:55 +0200 (Wed, 16 Sep 2009) | 2 lines Changed paths: M /trunk/source/libs/libpng/ChangeLog M /trunk/source/libs/libpng/configure M /trunk/source/libs/libpng/configure.ac D /trunk/source/libs/libpng/libpng-1.2.39 D /trunk/source/libs/libpng/libpng-1.2.39-PATCHES A /trunk/source/libs/libpng/libpng-1.2.40 (from /trunk/source/libs/libpng/libpng-1.2.39:3046) M /trunk/source/libs/libpng/libpng-1.2.40/ANNOUNCE M /trunk/source/libs/libpng/libpng-1.2.40/CHANGES M /trunk/source/libs/libpng/libpng-1.2.40/INSTALL M /trunk/source/libs/libpng/libpng-1.2.40/KNOWNBUG M /trunk/source/libs/libpng/libpng-1.2.40/LICENSE M /trunk/source/libs/libpng/libpng-1.2.40/Makefile.am M /trunk/source/libs/libpng/libpng-1.2.40/Makefile.in M /trunk/source/libs/libpng/libpng-1.2.40/README M /trunk/source/libs/libpng/libpng-1.2.40/Y2KINFO M /trunk/source/libs/libpng/libpng-1.2.40/configure M /trunk/source/libs/libpng/libpng-1.2.40/configure.ac D /trunk/source/libs/libpng/libpng-1.2.40/libpng-1.2.39.txt A /trunk/source/libs/libpng/libpng-1.2.40/libpng-1.2.40.txt (from /trunk/source/libs/libpng/libpng-1.2.39/libpng-1.2.39.txt:3046) M /trunk/source/libs/libpng/libpng-1.2.40/libpng.3 M /trunk/source/libs/libpng/libpng-1.2.40/libpngpf.3 M /trunk/source/libs/libpng/libpng-1.2.40/png.5 M /trunk/source/libs/libpng/libpng-1.2.40/png.c M /trunk/source/libs/libpng/libpng-1.2.40/png.h M /trunk/source/libs/libpng/libpng-1.2.40/pngconf.h M /trunk/source/libs/libpng/libpng-1.2.40/pngset.c M /trunk/source/libs/libpng/libpng-1.2.40/pngtest.c M /trunk/source/libs/libpng/libpng-1.2.40/pngwutil.c M /trunk/source/libs/libpng/libpng-1.2.40/scripts/CMakeLists.txt M /trunk/source/libs/libpng/libpng-1.2.40/scripts/libpng-config-head.in M /trunk/source/libs/libpng/libpng-1.2.40/scripts/libpng.pc.in M /trunk/source/libs/libpng/libpng-1.2.40/scripts/makefile.32sunu M /trunk/source/libs/libpng/libpng-1.2.40/scripts/makefile.64sunu M /trunk/source/libs/libpng/libpng-1.2.40/scripts/makefile.aix M /trunk/source/libs/libpng/libpng-1.2.40/scripts/makefile.beos M /trunk/source/libs/libpng/libpng-1.2.40/scripts/makefile.cygwin M /trunk/source/libs/libpng/libpng-1.2.40/scripts/makefile.darwin M /trunk/source/libs/libpng/libpng-1.2.40/scripts/makefile.dec M /trunk/source/libs/libpng/libpng-1.2.40/scripts/makefile.elf M /trunk/source/libs/libpng/libpng-1.2.40/scripts/makefile.gcmmx M /trunk/source/libs/libpng/libpng-1.2.40/scripts/makefile.hp64 M /trunk/source/libs/libpng/libpng-1.2.40/scripts/makefile.hpgcc M /trunk/source/libs/libpng/libpng-1.2.40/scripts/makefile.hpux M /trunk/source/libs/libpng/libpng-1.2.40/scripts/makefile.linux M /trunk/source/libs/libpng/libpng-1.2.40/scripts/makefile.mingw M /trunk/source/libs/libpng/libpng-1.2.40/scripts/makefile.ne12bsd M /trunk/source/libs/libpng/libpng-1.2.40/scripts/makefile.netbsd M /trunk/source/libs/libpng/libpng-1.2.40/scripts/makefile.nommx M /trunk/source/libs/libpng/libpng-1.2.40/scripts/makefile.openbsd M /trunk/source/libs/libpng/libpng-1.2.40/scripts/makefile.sco M /trunk/source/libs/libpng/libpng-1.2.40/scripts/makefile.sggcc M /trunk/source/libs/libpng/libpng-1.2.40/scripts/makefile.sgi M /trunk/source/libs/libpng/libpng-1.2.40/scripts/makefile.so9 M /trunk/source/libs/libpng/libpng-1.2.40/scripts/makefile.solaris M /trunk/source/libs/libpng/libpng-1.2.40/scripts/makefile.solaris-x86 M /trunk/source/libs/libpng/libpng-1.2.40/scripts/pngos2.def M /trunk/source/libs/libpng/libpng-1.2.40/scripts/pngw32.def A /trunk/source/libs/libpng/libpng-1.2.40-PATCHES (from /trunk/source/libs/libpng/libpng-1.2.39-PATCHES:3046) libpng 1.2.40 ------------------------------------------------------------------------ r3050 | oneiros | 2009-09-17 00:04:00 +0200 (Thu, 17 Sep 2009) | 2 lines Changed paths: A /trunk/.doxygen (from /trunk/source/texk/web2c/luatexdir/.doxygen:3048) D /trunk/source/texk/web2c/luatexdir/.doxygen doxygen of the whole project ------------------------------------------------------------------------

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Cron <luatex@vz3> /var/www/luatex.org/www/bin/luatex-svn
by root＠www.metatex.org 15 Sep '09

15 Sep '09

------------------------------------------------------------------------ r3048 | oneiros | 2009-09-14 23:46:10 +0200 (Mon, 14 Sep 2009) | 2 lines Changed paths: A /trunk/source/texk/web2c/luatexdir/.doxygen play with doxygen ------------------------------------------------------------------------

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Cron <luatex@vz3> /var/www/luatex.org/www/bin/luatex-svn
by root＠www.metatex.org 14 Sep '09

14 Sep '09

------------------------------------------------------------------------ r3047 | oneiros | 2009-09-14 18:16:03 +0200 (Mon, 14 Sep 2009) | 2 lines Changed paths: M /trunk/source/texk/web2c/luatexdir/font/writefont.c indent ------------------------------------------------------------------------

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dev-luatex September 2009