- ntg-context - Mailing Lists

update
by Hans Hagen 25 Jun '20

25 Jun '20

Hi, I uploaded a new version (both mkiv and lmtx). We removed some low level no longer used code (older engines), normalized some in the process, fixed a few things, etc. === lmtx only === While updating the cld manual I decided to also add an other table mechanism (in addition to the one already reported in an earlier mail). I have no clue how useful it is, but as usual with tex, users find ways to (ab)use it. This one behaves a bit more like registers. A hashed one is defined as: \newhashedtable\somehashtable \somehashtable{ foo = 123, bar = "foo" } [123 = \the\somehashtable{foo}] [123 = \the\somehashtable foo ] [foo = \the\somehashtable{bar}] [foo = \the\somehashtable bar ] \bgroup \somehashtable{ foo = 456, bar = "oof" } [456 = \the\somehashtable{foo}] [oof = \the\somehashtable{bar}] \egroup [123 = \the\somehashtable{foo}] [foo = \the\somehashtable{bar}] \bgroup \global\somehashtable{ foo = 456 } \somehashtable{ bar = "oof" } [456 = \the\somehashtable{foo}] [oof = \the\somehashtable{bar}] \egroup [456 = \the\somehashtable{foo}] [foo = \the\somehashtable{bar}] or an indexed one: \newindexedtable\someindextable \someindextable{ 123, "foo" } [123 = \the\someindextable 1] [123 = \the\someindextable \numexpr 2 - 1\relax] [foo = \the\someindextable 2] [foo = \the\someindextable \numexpr 1 + 1\relax] \bgroup \someindextable{ 456, "oof" } [456 = \the\someindextable 1] [oof = \the\someindextable 2] \egroup [123 = \the\someindextable 1] [foo = \the\someindextable 2] \bgroup \global\someindextable{ [1] = 456 } \someindextable{ [2] = "oof" } [456 = \the\someindextable 1] [oof = \the\someindextable 2] \egroup [456 = \the\someindextable 1] [foo = \the\someindextable 2] In both cases, local and global assignments are supported. At the Lua end you can access these tables too: context.hashedtables.somehashtable.bar context.indexedtables.someindextable[2] There is some overhead involved but performance and memory usage is quiite okay. Hans ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl -----------------------------------------------------------------

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.jpeg not recognised in LMTX
by Sytse Knypstra 25 Jun '20

25 Jun '20

Today I discovered that my LMTX version (2020.06.20) does not render an \externalfigure with .jpeg extension. After renaming to .jpg the picture is correctly shown. I would suggest to add the .jpeg extension to the list of allowed graphic types in LMTX. With greetings, Sytse Knypstra

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latest silly question - insert unicode character?
by Mike Cooper 25 Jun '20

25 Jun '20

Hi. Me again. How does one insert/use a special character? At this particular time, I want Double Prime: Unicode 02BA. How?? THANKS! Mike Cooper Technical Trainer Murchison Drilling Schools, Inc. 2501 Juan Tabo NE Albuquerque, NM 87112 Tel: (505) 293-6271 Fax: (505) 298-5294 Email: mike(a)murchisondrillingschools.com<mailto:mike@murchisondrillingschools.com> Website: www.murchisondrillingschools.com<http://www.murchisondrillingschools.com/> [cid:image007.jpg@01D03ADC.BD6E6850]<https://www.facebook.com/pages/Murchison-Drilling-Schools/158018484232622> [cid:image008.jpg@01D03ADC.BD6E6850] <http://www.linkedin.com/company/murchison-drilling-schools-inc-> [cid:image009.jpg@01D03ADC.BD6E6850] <https://twitter.com/trainingmds> Murchison Drilling Schools is now part of [cid:image001.png@01D63515.857FD120]

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Checking for singlesided/doublesided at run-time
by Lukas/ConTeXt 24 Jun '20

24 Jun '20

Hello, is there a way to detect whether the document is intended as single- or double- sided, IOW, whether \setuppagenumbering[alternative=singlesided] or \setuppagenumbering[alternative=doublesided] has been specified? If so, is it possible by Lua, too? Regards, Lukas

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explain please
by Hans van der Meer 24 Jun '20

24 Jun '20

How can the crash in the minimal example here be explained? And is there a solution to avoid this and make the crash going away "without having to jump through special hoops"? dr. Hans van der Meer

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Automatic userdata storage between runs
by Lukas/ConTeXt 24 Jun '20

24 Jun '20

Hello, first - thanks for the perfectly synoptical https://wiki.contextgarden.net/Programming_in_LuaTeX#Namespaces ! My question (and the answer sould appear on wiki, too): Is any of the namespaces (userdata, thirddata, moduledata, documentdata, parametersets) automatically serialized between Ctx first(-second(-third)) runs? I'm asking because user may call some (longer) code and put the result into a namespace (be it e.g. "userdata"). And if that namespace was automatically serialized for next run(s), that code could be called conditionally - typically just in first run (= mode "*first" enabled) - as in next runs results of the additional code would be available in a namespace (instead of repetitive call of that (longer) code). Of course, user can perform such evaluation, storage and conditional extra-code-call individually, but maybe there is some support for similar situations in Ctx. Best regards, Lukas

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CMYK workflow. How to set and should I worry about
by Keith McKay 24 Jun '20

24 Jun '20

Colleagues I'm getting ready to send a book to the printers and in their blurb they state "/Ensure that you are using a CMYK workflow and export to PDF/X-1a:2001" . /I can set the pdf format using \setupbackend but I'm unsure as to what to do about CMYK workflow. The book has no colour pages so I'm not sure if I really need to worry about CMYK workflow. Could someone advise? Thanks and Best Wishes Keith McKay //

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METAPOST's uniformdeviate is not truly random (seed)
by Gerben Wierda 23 Jun '20

23 Jun '20

I’m trying to get a real random number in METAPOST MWE: \startMPpage[instance=doublefun] show uniformdeviate 60; \stopMPpage Every time I run this, it shows the same result. I tried playing around with the randomseed, but for instance when I do two runs shortly after each other they still are very predictable. E.g. this in METAPOST: whatever = lua( "math.randomseed( tonumber(tostring(os.time()):reverse():sub(1,6)) )"); randomseed := lua.math.random(); minutespast := uniformdeviate 60; Called shortly after each other (two LMTX runs) gets me the same result. What is a good way to get better random numbers in METAPOST (LMTX)? Thanks, G

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loading xml error
by Hans van der Meer 23 Jun '20

23 Jun '20

Please can someone explain the following error and why the one specific XML input fails? It turns out that a single node <node/> is not accepted by the core whereas others are ok. This is the error message in the log, first line from my debug statement: HVDM-VOC > load vocabulary from buffer "german" xml > core > load error in [buffer: german]: invalid xml file - parsed text Minimal code to explain what is done: % Loading from buffer. \def\loadvocabularyfrombuffer#1{% \writestatus{HVDM-VOC}{load vocabulary from buffer "#1"}% \XMLProcessBuffer{#1}% % simply does an \xmlprocessbuffer{}{}{} } The following buffer gives the error: \startbuffer[german] <vocabulary use="de"/> \stopbuffer \loadvocabularyfrombuffer{german} But the others below are ok and load as expected. \startbuffer[german] <vocabulary use="de"></vocabulary> \stopbuffer and \startbuffer[german] <root><vocabulary use="de"/></root> \stopbuffer dr. Hans van der Meer

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Undefined control sequence: \pdfpxdimen
by Aditya Mahajan 23 Jun '20

23 Jun '20

The drops module uses the primitive \pdfpxdimen in a couple of places, but that is no longer defined in the current beta. What is the equivalent command now? Examples of usage: \pdfpxdimen1in\relax\divide\pdfpxdimen\numexpr\dropsparameter\c! resolution\relax % set actual pixel dimension Aditya

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