- dev-luatex - NTG Mailing Lists

Notes and comments on beta 0.11.2
by Jonathan Sauer 20 Sep '07

20 Sep '07

Hello, I tried out beta 0.11.2 yesterday, and it works great. Still, I noticed a few things that do not seem right. First thing: I tried to use 'require', and the error message I got was slightly weird: >>> ! LuaTeX error [string "luas[0]"]:1: module '/Dokumente/Writing/trunk/Writing/T eX/tex/KTeX/lua/l-callback.klua' not found: no field package.p. \LU:require ...ed {require(kpse.find_file('#2'))}} <<< I look into Lua 5.1.2 and found this in loadlib.c: >>> lua_pushfstring(L, "\n\tno field package.preload['%s']", name); <<< A variation (shorter pathname, thus longer message): >>> ! LuaTeX error [string "luas[0]"]:1: module 'l-callback.klua' not found: no field package.preload['l-callback.klua'] no file './l-callback/k. <<<

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beta 0.11.1 released
by Taco Hoekwater 19 Sep '07

19 Sep '07

Hi, I have just released the files for luatex beta 0.11.1. So far, there is a source package and binaries for win32 and linux-i386, as usual. Hopefully, binaries for (some) other platforms will become available in a few days. As you can see below, most of the new stuff is related to fonts. Still to come in that area is extended support for math and opentype, but the immediate focus will shift to opening up the hyphenation subsystem and paragraph builder. A quick list of what is new and fixed since beta 0.10.2: New: * pfb+afm fonts can now be used in 'wide' (encodingbytes=2) mode * searching in PDFS using 'wide' fonts now works reasonably well (based on the tounicode feature) * related to that, tounicode information can now be passed on inside the font metrics table * font subsetting is now supported for CID-based OpenType fonts (however, there is a known bug with KpozMinProVI-Regular.otf) * fontforge's warning and error messages are now intercepted and passed on to the lua code as a second return value of the fontforge.open() function * the new primitive \suppressfontnotfounderror can suppress the TeX error for "Font not found" * The lua function font.current can now be used to set TeX's current font Fixes: * set_attribute(-1) is now the same as unset_attribute() * OpenType lookups with glyph classes would crash luatex * luazlib would not compile on debian (fix from Norbert) * CID-based fonts would crash luatex * Bare CFF should be read in binary mode (fix from Akira) * VF processing did not process packets containing zero bytes properly * the truetype collection (.ttc) handling is fixed, so that all of the fonts inside a collection can now be used reliably * application segfaults and stack overflows are intercepted so that luatex can quit a bit more gracefully * an assertion failuer on systems with signed chars (linux-powerpc) is fixed * a crash on AMD64 linux was fixed * the lua "pdf" table code was wrong * \ifcsname did not work properly for UTF-8 characters * Use of the math-related functions using make_fraction (like \atop) caused a crash * \handling of \if\noexpand was wrong * applied a patch that cleans up XForm and page calculations * "autoconf" support from zziplib is stripped As usual, I have uploaded source and binaries to http://foundry.supelec.fr/projects/luatex/ Have fun, Taco

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Cron <luatex@server> /home/luatex/luatex-svn
by root＠aanhet.net 19 Sep '07

19 Sep '07

U luatex/trunk/src/texk/web2c/luatexdir/luatex.web U luatex/trunk/manual/luatexref-t.tex Checked out revision 739.

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\pardir and \textdir etc
by weg＠indiscrete.org 19 Sep '07

19 Sep '07

Hi, Running this file under luatex 11.2 on amd64 fails, with "segmentation fault, probably due to infinite macro recursion". ---------------------- \pardir TLT \textdir TLT This is some text \textdir TRT and this is too. \halign{% \textdir TLT #&\textdir TRT#\cr This and&that\cr} --------------------- Grouping the first paragraph fixes it. Also, it seems to me that eTeX treats alignment with directional instructions more sensibly: --------------------- \TeXXeTstate=1 \halign{% \beginL#\endL&\beginR#\endR\cr This and&that\cr } --------------------- Thanks, eythan

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Cron <luatex@server> /home/luatex/luatex-svn
by root＠aanhet.net 19 Sep '07

19 Sep '07

U luatex/trunk/manual/luatexref-t.tex Checked out revision 737.

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Hyphenation
by Jonathan Sauer 19 Sep '07

19 Sep '07

Hello, I have a question about hyphenation in LuaTeX. Situation: I have UTF-8 input which is mapped (using active characters) onto a T1-encoded font (using \char<foo>). I am using the german UTF-8 Context hyphenation patterns (but not Context itself). Now words which contain german umlauts are hyphenated correctly, since the T1 font slot of umlauts is identical to their Unicode position. Unfortunately, this is not the case for sharp s, which is at hex FD in Unicode, but hex FF in T1 fonts. So words containing sharp s are not hyphenated correctly. Since Unicode hex FF is y dieresis, I have modified the hyphenation patterns to include the patterns containing a sharp s twice: Once with the sharp s, and once with a y dieresis instead of the sharp s. Now hyphenation works as expected, but I cannot help to think that this is quite an ugly workaround. Still: Am I on the right track (at least until I have written and included code to read OpenType fonts, so the whole font encoding concept vanishes)? Jonathan

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Cron <luatex@server> /home/luatex/luatex-svn
by root＠aanhet.net 19 Sep '07

19 Sep '07

U luatex/trunk/src/texk/web2c/luatexdir/luatex.web Checked out revision 736.

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beta 0.11.2 released
by Taco Hoekwater 18 Sep '07

18 Sep '07

Hi, As promised, 0.11.2 is now released. There is exactly one bugfix: * Pdf inclusion and subsetting of CID-based opentype fonts now works as it should. As usual, I have uploaded source and binaries to http://foundry.supelec.fr/projects/luatex/ Have fun (once more), Taco

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Cron <luatex@server> /home/luatex/luatex-svn
by root＠aanhet.net 18 Sep '07

18 Sep '07

U luatex/trunk/src/texk/web2c/luatexdir/font/luafont.c Checked out revision 731.

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Some questions
by Jonathan Sauer 18 Sep '07

18 Sep '07

Hello, trying out the LuaTeX snapshot 20070820, I have a couple of questions: - Is it safe to add to the LuaTeX library tables (tex, callback), i.e. a callback.push function? Or should these support functions have their own table? ("callback_utils") - How do I generate an error when inside Lua code? I could use tex.write("\\errmessage{...}"), but then the error would only be generated after the Lua code has finished executing, and after any TeX code created previously using tex.write et.al. has been executed. - How do I access control sequences from Lua code? If I have a macro \test, how would I get the tokens of this macro when inside Lua? (without passing them from TeX) Is there a table tex.macro, just like the tex.count, tex.toks etc. tables? Thanks in advance, Jonathan

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