- dev-context - NTG Mailing Lists

[do we need TeXtexts in MkIV]: how to rewrite \startTeXtexts?
by Mojca Miklavec 07 Oct '08

07 Oct '08

Hello, I'm a bit "out" of programming at the moment (and not following mkiv as deep as I should), but here's one of the old sins that keeps preventing my module to be used in MKIV. How can I get rid of \startTeXtexts in the following code, so that the code will be usable by both mkii and mkiv? (Metapost code is probably [almost] OK, but the TeX part needs some minor polishing. One could definitely rewrite metapost code into lua, but then I would need to take care for two paralel versions - I do not want to go there since metapost does all the work at the moment.) Any hinst most welcome, Mojca \defineconversion [hans and taco] [H,a,n,s,\ ,\&,\ ,T,a,c,o,\ ] \setupcolors [state=start] \chardef\TeXtextcolormode\zerocount \startTeXtexts \doloop{\doifelseconversionnumber{hans and taco}{\recurselevel}% % +500 is a hack (hopefully the plot doesn't contain more than 500 labels) % otherwise the points would be overwritten by labels with another \TeXtext: % it might need a fix in ConTeXt core {\TeXtext{\numexpr\recurselevel+500\relax}{\strut{\convertnumber{hans and taco}{\recurselevel}}}}% {\exitloop}}% \stopTeXtexts \edef\numberofsymbols{1}% \doloop{\doifelseconversionnumber{hans and taco}{\recurselevel}% {\edef\numberofsymbols{\recurselevel}}% {\exitloop}}% \starttext \startMPcode color c[]; for i=1 upto \numberofsymbols: c[i] = ((i-1)/(\numberofsymbols-1))[red,blue]; endfor; vardef the_number(expr n) = ((n mod \numberofsymbols) + 1) enddef; vardef the_symbol(expr n) = picture pict; pict := sometxt(the_number(n) + 500); pict shifted -.5[llcorner pict,lrcorner pict] enddef; def draw_point(expr x, y, n) = draw (the_symbol(n) shifted (x,y)) withcolor c[the_number(n)]; enddef; for i=0 upto 23: draw_point(0,-i*3mm,i); endfor; \stopMPcode \stoptext

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Luatex beta 0.30.0 released
by Taco Hoekwater 30 Sep '08

30 Sep '08

Hi all, I have just uploaded the archives for luatex 0.30.0. This release matches SVN revision #1521. New features: * Readable \tex internal params that are counts, attrs, or dimens are now returned as numbers instead of strings, and skips as node objects. Read-write access to tex's skip registers added: tex.skip[0] etc. * new callback: 'linebreak_callback' to replace the internal paragraph breaking code * the tex table now supports more readable 'convert' values: tex.fontname, tex.pdffontname, tex.pdffontobjnum, tex.pdffontsize, tex.uniformdeviate, tex.number, tex.romannumeral, tex.pdfpageref, tex.pdfxformname (each takes a number as argument) * new readable parameter: tex.fontidentifier(number) returns the \csname associated with that font id * luatex now outputs \FONT<nr> instead of \^^@ in Overfull/Underfull messages if the font's id text is zero (like for expanded fonts) (#77) * luatex --version is split into --version and --credits * There is now (again) an svn revision number in luatex --version (#91) * Add support for more read-only internal access from lua: tex.lastpenalty, tex.lastkern, tex.lastskip, tex.lastnodetype, tex.inputlineno, tex.badness, tex.pdftexversion, tex.pdflastobj, tex.pdflastxform, tex.pdflastximage, tex.pdflastximagepages, tex.pdflastannot, tex.pdflastxpos, tex.pdflastypos, tex.pdfrandomseed, tex.pdflastlink, tex.luatexversion, tex.Alephversion, tex.Omegaversion, tex.Alephminorversion, tex.Omegaminorversion, tex.eTeXminorversion, tex.eTeXversion, tex.currentgrouplevel, tex.currentgrouptype, tex.currentiflevel, tex.currentiftype, tex.currentifbranch, tex.pdflastximagecolordepth (#81) * the old --src-specials are replaced by --synctex (#63) * the \expanded primitive is backported from pdftex 1.50 (#43) * luatex now comes with libpng 1.2.32 * experimental: tex.definefont(string, number) associates a csname string with a font id number Bugs fixed compared to 0.29.0: * dashes were exported wrongly by MPlib * multi-item \discretionaries were broken in various ways (#78, mailinglist) * read_font_info was sometimes called recursively from lua-loaded virtual fonts * do_vf was sometimes called on lua-loaded fonts that where already known to be virtual * trailing junk in tfm files is now ignored (needed for ecrm fonts) * pdf_ignored_dimen was initialized too late, breaking \prevdepth handling and causing output lines to overlap eachother (#72) * pdf.immediateobj() had a printf-related bug * the fontname terminal logging is fixed for strange font file names * lua tex array assignments now listen to the globaldefs setting (tex.count[0] etc) (#92,partial) * \parshape was broken (#70) * there is no longer a ".tex" extension forced on very input file (#74) * eof() for mapfiles was true one byte too soon (#76) * out of range \lefthyphenmin and \righthyphenmin settings now actually disable hyphenation (#90) * tex.unset_attribute() looked too far ahead when a to-be-unset attribute id not only did not exist in the node, but was also higher than the highest set attribute on the node. (#65) * the parameters attr and page_name of read_image() were swapped (this broke \pdfimage with attributes) * tex filenames with spaces in them on the command line are now allowed again (#30) * sometimes pfb fonts were included multiple times without valid reason (#29) * some parts of the pdftex 1.40.9 PNG transparancy hack were still present and caused transparant png handling to fail * \localinterlinepenalty and \localbrokenpenalty were broken * special case catcode tables are now handled better (#23) * the handling of missing .notdef charstrings in old pfb fonts is fixed (#27) The archives (source and binaries) can be downloaded from supelec, as usual: http://foundry.supelec.fr/projects/luatex/ Bugs and feature requests can be added to the issue tracker at http://tracker.luatex.org Have fun, Taco

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Re: [dev-context] [Dev-luatex] Luatex beta 0.30.0 released
by Norbert Preining 30 Sep '08

30 Sep '08

On Di, 30 Sep 2008, Yue Wang wrote: > I dont know why Debian and Debian-like distributions have an old > tradition to link tex-related program to dynamic library. Ever heard about security related items? Do YOU want to wade through thousands of packages and check whether they use xpdf code, zlib code, or whatever, and fix in all of them a severe security bug? If not, then learn how big distributions have to work. That is life. I don't use the system lua because lua has been changed in luatex, same with xetex and libice (and I am surprised where you got the information that ubuntu did that, because ubuntu takes my packages from Debian, and I never did that). So thanks for the useless contribution. 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 ------------------------------------------------------------------------------- LOCHRANZA (n.) The long unaccomplished wail in the middle of a Scottish folk song where the pipes nip around the corner for a couple of drinks. --- Douglas Adams, The Meaning of Liff

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Re: [dev-context] derived colors (mkiv)
by Hans Hagen 25 Sep '08

25 Sep '08

Peter Rolf wrote: > Hans Hagen schrieb: >> so, what exactly do you need the number for > > for overprinting (text only) i have to test if the current color is > black. overprinting should be activated for all text elements, but if > the print color is non black, overprinting should be disabled. so, how about something that just works -) \setupcolors[state=start] \startluacode function ctx.isblack(ca) -- name might change local cv = ca > 0 and colors.value(ca) return (cv and cv[2] == 0) or false end \stopluacode \def\doifblackelse#1% {\ctxlua{commands.doifelse(ctx.isblack(\thecolorattribute{#1}))}} \def\doifdrawingblackelse {\ctxlua{commands.doifelse(ctx.isblack(tex.attribute[attributes.numbers['color']]))}} \starttext \definecolor[foo][black] {\red red {\foo (\doifblackelse{foo}{YES}{NO} \doifdrawingblackelse{YES}{NO}) black} red} \definecolor[foo][green] {\red red {\foo (\doifblackelse{foo}{YES}{NO} \doifdrawingblackelse{YES}{NO}) green} red} \stoptext less code and more abstract ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com | www.pragma-pod.nl -----------------------------------------------------------------

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derived colors (mkiv)
by Peter Rolf 25 Sep '08

25 Sep '08

Hi, there is currently no bookkeeping ('name-->id') for derived colors in mkiv; i.e. \definecolor[foo] [black] does not register 'foo'. \csname(ca:foo)\endcsname is the only way to access the color id. While this in no problem in TeX code, using this in lua is not very handy. I tried ugly stuff like c_id = format("\\csname(ca:%s)\\endcsname",c) but when I compare 'c_id' with the id of black, the values '1' and 1 (id of black) differ when compared. Mhhhh. I think that the best way to handle derived colors properly is to add their name to the attributes list too. It's only a small patch and it shouldn't do any harm. Best wishes, Peter

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ConTeXt MK IV possibility to run different language options
by Martin Scholz 03 Sep '08

03 Sep '08

Hi I've got an wish for an additonal command option in the context command. Up to now there is no possibility to run context in MK IV mode in different languages. Here is a way one could solve this: as far as I see it context invokes the luatools command and for a non-english source-file one could use luatools --run cont-de myfile Now why can't wan edit the context-command with a --lang option in the following way context --lang=xx myfile so that the --lang=xx option has a change-option in luatools so that the --run option is change. context myfile invokes luatools --run cont-en myfile context --lang=xx invokes luatools --run cont-xx myfile, where xx stands for the countrycode. Thanks for your patience Greetings Martin

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metafun & textext problems in mkiv
by Mojca Miklavec 01 Sep '08

01 Sep '08

Hello Hans, this fails in mkiv: \setupcolors[state=start] \starttext \startMPpage picture p; p := textext("abc"); draw p withcolor red; draw p shifted (3cm,0) withcolor blue; \stopMPpage \stoptext Mojca

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trouble with texmfstart and =
by Aditya Mahajan 31 Aug '08

31 Aug '08

texmfstart does not handle = in --argument propertly. For example texmfstart --verbose --arguments="a=b" bin:echo gives texmfstart version 2.0.3 using 'system' call: echo a a Notice that oly echo a is being called. This causes problems when I want to call echo "a=b". If I try texmfstart --verbose --arguments="\"a=b\"" bin:echo I get texmfstart version 2.0.3 using 'system' call: echo "a sh: Syntax error: Unterminated quoted string execution failed For some reason, texmfstart is truncating the argument before =. Due to this bug the vim module does not work anymore. Aditya

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Happy ConTeXt Community Day :)
by Mojca Miklavec 31 Aug '08

31 Aug '08

Hello, I would like to express my best wishes to the two very special people who did most for the ConTeXt community - who are voluntary, with all their enthusiasm, helping others and developing whatever users around the World desire. I wish them both to be able to do their dream job (as well as to spend enough time away from computer for other hobbies :), and would like to thank them both for the marvellous work they are doing. Today could be declared the "ConTeXt Community Day" :) Patrick, alles gutes zum Geburtstag! Taco, van harte gefeliciteerd met je verjaardag! M.

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bugs & features
by Taco Hoekwater 28 Aug '08

28 Aug '08

Hi, Here is the stuff I have seen/heard in the last week. There may well be more that I have not remembered yet. (with apologies for starting an email thread but I am supposedly on vacation for the rest of this week and the next and I do not want things to fall into cracks simply because I am not at the office). Bib module bugs: * forced title downcasing in the bst files (this is bad for German) * a missing \egroup in incollection * inproceedings == conference (the latter doesnt exist yet) Context feature requests: * \setuptyping[ignorefirstspace=yes] (req. by pm on ntg-context) Mplib related bugs: * \sometxt is different in mkiv <> mkiv (from ts, email to mojca and me) * a slowing down of mplib when many strings are used (from yue wang, email to hans and me) Luatex bugs: * the Italic pfbs from URW crash luatex when used in afm mode * colorisation in tables doesnt work, this seems related to \leaders, and not a macro problem MKIV bugs: * \postexhyphenchar=`\- doesn't work in mkiv. Does work in plain luatex. (from Jano) * converters.alphabetic(0,"arabic") is one off (from Khaled) * \setupexternalfigures is always using the first setup if more are given (from pm, on the mailing list) * problems with copying and pasting of oldstyle from the generated pdf (from aditya) Generic context bug: * Bug in \startitemize: embedded [joinedup] doesnt work (from Marcin) Reference manual: * \starttypescriptcollection needs documenting * the typescripts / typefaces explanation is not good enough yet Best wishes, Taco

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