- dev-luatex - NTG Mailing Lists

Letterspacing in LuaTeX: Wants to create <font>+<spacing>ls
by Jonathan Sauer 17 Aug '07

17 Aug '07

Hello, when typesetting a document of mine using LuaTeX, I noticed that letterspacing seems not to work: LuaTeX runs mktexpk to create the letterspaced font and fails. pdfTeX simply extends the spacing of the base font. I created a small Plain-based example file which demonstrates the behaviour: ------------------------------- CUT --------------------------------- \pdfoutput1 \letterspacefont\ltenrm\tenrm10 \ltenrm This is a test. \tenrm This is a test. \bye ------------------------------- CUT --------------------------------- The log: ------------------------------- CUT --------------------------------- This is luaTeX, Version 3.141592-beta-0.10.2-2007081018 (Web2C 7.5.6) (LetterspaceFont.tex [1{/usr/local/teTeX/share/texmf.local/fonts/map/pdftex/upd map/pdftex.map}]kpathsea: Running mktexpk --mfmode / --bdpi 72 --mag 1+0/72 --dpi 72 cmr10+10ls mktexpk: don't know how to create bitmap font for cmr10+10ls. kpathsea: Appending font creation commands to missfont.log. ) luaTeX warning (file cmr10+10ls): Font cmr10+10ls at 72 not found </usr/local/teTeX/share/texmf.tetex/fonts/type1/bluesky/cm/cmr10.pfb> Output written on LetterspaceFont.pdf (1 page, 5404 bytes). Transcript written on LetterspaceFont.log. ------------------------------- CUT --------------------------------- I have attached the resulting PDF; Acrobat 7 Mac displays a warning that some fonts were not found; Acrobat 8 Win simply uses Helvetica instead of the missing letterspaced font. It seems LuaTeX handles letterspacing like early versions of pdfTeX handle font expansion: By requiring an adjusted font file. Is this a bug? A feature? A reminder not to use letterspacing? ;-) Jonathan

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test versions of context
by Norbert Preining 16 Aug '07

16 Aug '07

Hi all, (cc-ing the usual suspects) I have created test versions of ConTeXt 2007.08.09, if you can give it a try: context deb http://people.debian.org/~preining/TeX/ context/ deb-src http://people.debian.org/~preining/TeX/ context/ On sid this should be no problem, for etch you need texlive and tex-common deb http://people.debian.org/~preining/TeX/ tl2007/ deb-src http://people.debian.org/~preining/TeX/ tl2007/ lmodern deb http://people.debian.org/~preining/TeX/ lmodern/ deb-src http://people.debian.org/~preining/TeX/ lmodern/ If you want to test the new context/luatex functionality you should also get the latest luatex package: luatex deb http://people.debian.org/~preining/TeX/ luatex/ deb-src http://people.debian.org/~preining/TeX/ luatex/ (which is 0.10.2-2). It has already been uploaded to Debian but has to go through the NEW queue (which usually takes some time). Sorry NO etch version for now for luatex, I have to adapt the poppler patch first. I run several documents with the new context and it worked. Please report your success/failure to me, thanks a lot. Especially one with a bit of experience could test luatex/context combination, that would be great. Best wishes Norbert ------------------------------------------------------------------------------- Dr. Norbert Preining <preining(a)logic.at> Vienna University of Technology Debian Developer <preining(a)debian.org> Debian TeX Group gpg DSA: 0x09C5B094 fp: 14DF 2E6C 0307 BE6D AD76 A9C0 D2BF 4AA3 09C5 B094 ------------------------------------------------------------------------------- SPROSTON GREEN (n.) The violent colour of one of Nigel Rees's jackets, worn when he thinks he's being elegant. --- Douglas Adams, The Meaning of Liff

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Cron <luatex@server> /home/luatex/luatex-svn
by root＠aanhet.net 16 Aug '07

16 Aug '07

U luatex/trunk/src/libs/lua51/ldebug.c U luatex/trunk/src/texk/web2c/luatexdir/font/vfovf.c Checked out revision 672.

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LuaTeX manual cannot be searched
by Jonathan Sauer 16 Aug '07

16 Aug '07

Hello, when I search the LuaTeX manual in Acrobat Reader 8 or Apples Preview.app bundled with OS X 10.4.2, I never get any results, even if the word I am searching for definitely exists (since I can read it on the page). Copying from the manual does not work as well; only some weird vertical slashes are copied. Jonathan

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Re: [Dev-luatex] Example: Sorting in LuaTeX
by Jonathan Sauer 15 Aug '07

15 Aug '07

Hello, > > yesterday I experimented a little with \directlua, and I decided to > > code a sorting routine, since sorting in TeX (as i.e. > > implemented in the experimental LaTeX 3 code or in Bernd > > Raichle's paper "Sorting in TeX's mouth") is quite slow. > > Yes, excellent example and nicely emphasizing my comment > during Taco's talk in San Diego: "Doing [list processing] in > TeX is great for your ego, I concur. It is a great feeling when you finally found an elegant (well, relatively elegant, we're talking about TeX's macro language) way of implementing a macro. BTW: Is there a transcript of the video available? The video itself is a little bit too large for me (and possibly others) to download. Also, I find it easier to read a text than to listen to a talk. Faster, too. > but..." No buts! ;-) > > In any case: Imagine the possibilities when using Lua not only for > > manipulating the node list, but also for parsing user input! > > Using lua to parse user input is convenient, think of key=val > processing which is currently jumping through hoops to remove > spaces and the correct number of braces etc. Yes, but until LuaTeX is out of beta and widespread, it will be necessary to keep an implementation in TeX. So unless it really speeds things up, or makes better error handling possible, I do not see much use in parsing user input in Lua. Or am I forgetting something? Jonathan

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Cron <luatex@server> /home/luatex/luatex-svn
by root＠aanhet.net 15 Aug '07

15 Aug '07

U luatex/trunk/src/libs/luafontforge/fontforge/fontforge/parsettf.c Checked out revision 670.

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Cron <luatex@server> /home/luatex/luatex-svn
by root＠aanhet.net 14 Aug '07

14 Aug '07

U luatex/trunk/src/libs/luafontforge/src/luafflib.c U luatex/trunk/src/libs/luafontforge/fontforge/Unicode/gwwiconv.c U luatex/trunk/src/libs/luazlib/lzlib.c Checked out revision 669.

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compiling luatex with --with-system-zlib
by Norbert Preining 14 Aug '07

14 Aug '07

Hi Taco, I am trying to compile luatex with --with-system-zlib (in Debian we have to do this). But the latest changes (from 0.10.1 to 0.10.2) in luatexlib.mk seemed to have messed this up. I get a nice error: ... cd ../../libs/zziplib/zzip && \ make CC='gcc' CFLAGS='-g -O2 ' LDFLAGS='' libzzip.la cp: cannot stat `../../libs/zlib/*.a': No such file or directory make: *** [../../libs/zziplib/zzip/.libs/libzzip.a] Error 1 I reverted luatexlib.mk to (quasi) 0.10.1 (some make -> $(MAKE) replacements I left) and it again compiles. Interestingly, with --with-system-zlib, I also had to add another patch because zzlib or whoever is very picky about the version string: (in luazlib/lzlib.c) if (strcmp(version, ZLIB_VERSION)) then bail out but zlibVersion is (here) 1.3.3, while ZLIB_VERSION is 1.3.3.2. So I changed the code to compare only the first 5 chars: if (strncmp(version, ZLIB_VERSION, 5)) All this together let me compile 0.10.2 with the system zlib. (BTW: I have made all the other libs shared linked, too, freetype, fontconfig, jpeg, etc). If you have any other suggestion or idea, please let me know. I would prefer NOT to patch the luatexlib.mk in that way ... Thanks a lot and all the best Norbert ------------------------------------------------------------------------------- Dr. Norbert Preining <preining(a)logic.at> Vienna University of Technology Debian Developer <preining(a)debian.org> Debian TeX Group gpg DSA: 0x09C5B094 fp: 14DF 2E6C 0307 BE6D AD76 A9C0 D2BF 4AA3 09C5 B094 ------------------------------------------------------------------------------- ESHER (n.) One of those push tapes installed in public washrooms enabling the user to wash their trousers without actually getting into the basin. The most powerful esher of recent years was 'damped down' by Red Adair after an incredible sixty-eight days' fight in Manchester's Piccadilly Station. --- Douglas Adams, The Meaning of Liff

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Cron <luatex@server> /home/luatex/luatex-svn
by root＠aanhet.net 14 Aug '07

14 Aug '07

U luatex/trunk/manual/luatexref-t.tex Checked out revision 666.

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Assignments in TeX's mouth, or: "Dr. Zaius, it can talk!"
by Jonathan Sauer 14 Aug '07

14 Aug '07

Hello, normally, TeX cannot perform assignments in the mouth (except for \let-ing a previously undefined control sequence to \relax when using \csname...\endcsname). With LuaTeX, this has changed, albeit in a slightly weird way: All assignments are \global. Plain example (with some variations on a theme): ---------------------------------- CUT ------------------------------ \tracingassigns1 % Access internal control sequences: \catcode`@=11 % For easier logging: \def\log#1{\immediate\write\sixt@@n{#1}} \let~\space \count@=5 \log{Before:~~~~~~~~~~~~~~~~~~~\the\count@} % We only define \test, we do not execute it: \begingroup \edef\test{% \directlua0{% % Note that `tex.count.count@' (syntactic sugar for the code % below) cannot be used, since `@' is not a letter and thus % not part of an identifier: tex.count["count@"]=42 % We create some contents for \test: tex.print("Contents of test") }% } % Behold: We changed \count@ in the mouth! \log{After:~~~~~~~~~~~~~~~~~~~~\the\count@} % Note that \test only contains the string passed to tex.print above. % The rest of the Lua code has been executed completely: \log{\string\test~is:~~~~~~~~~~~~~~~~~\meaning\test} \endgroup % Now that is weird: Assigning registers in Lua is automatically % global: \log{After \string\endgroup:~~~~~~~~~~\the\count@} % We try again, without \edef: \begingroup \directlua0{tex.count["count@"]=23} \log{In group, 2nd try:~~~~~~~~\the\count@} \endgroup % The assignment is global again: \log{After \string\endgroup, 2nd try:~\the\count@} % We try again, using accessor functions: \begingroup \directlua0{tex.setcount("count@",17)} \log{In group, 3rd try:~~~~~~~~\the\count@} \endgroup % And global again: \log{After \string\endgroup, 3rd try:~\the\count@} % We try again, using accessor functions and \{b,e}group: \bgroup \directlua0{tex.setcount("count@",37)} \log{In group, 3rd try:~~~~~~~~\the\count@} \egroup % And still global: \log{After \string\endgroup, 3rd try:~\the\count@} \bye ---------------------------------- CUT ------------------------------ Note: According to the Lua reference manual, section 2.1, the definition of `letter' depends on the current locale. Would it be possible/sensible to define the current locale not according to the system TeX is run on (which would actually make LuaTeX code locale-dependent, since some identifiers might not work on another computer with a different locale) according to TeX's current catcode table? And while we're at it: Should string.uppercase and string.lowercase use the \lccode/\uccode tables? When tracing assignments, the ones made from Lua are flagged as being \global (BTW: What are these messages about `reassigning [no_local_whatsits]'?): ---------------------------------- CUT ------------------------------ This is luaTeX, Version 3.141592-beta-0.10.2-2007081018 (Web2C 7.5.6) (format=luatex 2007.8.10) 11 AUG 2007 08:50 **MouthSideeffect (MouthSideeffect.tex{into \tracingassigns=1} {changing \log=macro:->\mathop {\rm log}\nolimits } {into \log=macro:#1->\immediate \write \sixt@@n {\ETC.} {changing ~=macro:->\penalty \@M \ } {into ~=macro:-> } {changing \count255=92} {into \count255=5} Before: 5 {reassigning [no_local_whatsits]=0} {reassigning [no_local_dirs]=0} {globally changing \count255=5} {into \count255=42} {changing \test=undefined} {into \test=macro:->Contents of test} After: 42 \test is: macro:->Contents of test After \endgroup: 42 {reassigning [no_local_whatsits]=0} {reassigning [no_local_dirs]=0} {globally changing \count255=42} {into \count255=23} In group, 2nd try: 23 After \endgroup, 2nd try: 23 {reassigning [no_local_whatsits]=0} {reassigning [no_local_dirs]=0} {globally changing \count255=23} {into \count255=17} In group, 3rd try: 17 After \endgroup, 3rd try: 17 {reassigning [no_local_whatsits]=0} {reassigning [no_local_dirs]=0} {globally changing \count255=17} {into \count255=37} In group, 3rd try: 37 After \endgroup, 3rd try: 37 ) No pages of output. ---------------------------------- CUT ------------------------------ I do not think that assignments to TeX's registers done in Lua code should be automatically \global, as it makes writing macros without (intentioned) side-effects much harder. And those macros are the best, since they can be used anywhere without having to remember that they clobber register \foo, redefine macro \bar et cetera. So, returning to this mail's subject, I can only say: "Take your hands off my grouping, you damn dirty Lua code!" ;-) Jonathan

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