September 2014 - ntg-context - NTG Mailing Lists

Re: [NTG-context] Erratic error message
by Robert Blackstone 24 Sep '14

24 Sep '14

On 24 Sep 2014, at 12:00 , 13:42:41 +0200 Taco Hoekwater <taco(a)elvenkind.com> wrote > > On 23 Sep 2014, at 12:51, Robert Blackstone <blackstone.robert(a)gmail.com> wrote: > >> >> On 23 Sep 2014, at 11:34:45 +0600, Henning Hraban Ramm <texml(a)fiee.net> wrote >>> >>> Am 2014-09-18 um 01:37 schrieb Robert Blackstone <blackstone.robert(a)gmail.com>: >>> >>>> I would not know how to make a minimal example that will consistently give the error. >>>> I had hoped that this text in the error message: ?Attempt to double-free dir node 54467, ignored? would contain some information as to what might be wrong, but apparently it does not. >>> >>> Might that mean something like ?too many open files?? >>> Did you try to change you OS?s settings? See http://wiki.contextgarden.net/LilyPond#Too_many_open_files >>> >>> Or maybe too many files in a working directory (that containing your files or a temp dir of ConTeXt)? >> >> Thanks, Hraban, for your advice. >> I?ve no idea whether or not the error is connected with ?too many open files?. > > It is not. ?dir node? means ?direction node? in this context. Nodes are LuaTeX internal data structure objects. > Various bits of ConTeXt manipulate these objects, and sometimes the reference counting goes off and one > whose memory has already been given back to the operating system is asked to release its memory again. > > The message is harmless, but it points to a small lua programming error somewhere in the source (either > by the author or by ConTeXt). Thanks, Taco. I will stop worrying about looming disasters. Best regards, Robert

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Re: [NTG-context] Erratic error message
by Robert Blackstone 23 Sep '14

23 Sep '14

On 23 Sep 2014, at 11:34:45 +0600, Henning Hraban Ramm <texml(a)fiee.net> wrote > > Am 2014-09-18 um 01:37 schrieb Robert Blackstone <blackstone.robert(a)gmail.com>: > >> I would not know how to make a minimal example that will consistently give the error. >> I had hoped that this text in the error message: ?Attempt to double-free dir node 54467, ignored? would contain some information as to what might be wrong, but apparently it does not. > > Might that mean something like ?too many open files?? > Did you try to change you OS?s settings? See http://wiki.contextgarden.net/LilyPond#Too_many_open_files > > Or maybe too many files in a working directory (that containing your files or a temp dir of ConTeXt)? Thanks, Hraban, for your advice. I’ve no idea whether or not the error is connected with “too many open files”. The Project needs some 40 files but its working directory contains some 120 files (most of them only for testing purposes). Moreover, I usually only have the “project-file" open during processing (but I don’t know if that is important here). Surprisingly, as I wrote in my first post on this subject, the error up till now only occurs when I use interaction, and it usually does not occur anymore, at least on the same day, after I processed it once without interaction. But the next day, after sleep (of the Mac), the error may occur again. I did not change the settings but I will in case the problem gets worse. Best regards, Robert

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Span all columns in natural tables
by Christoph Reller 23 Sep '14

23 Sep '14

Hi, Is it possible to define a cell that spans all columns without knowing beforehand how many columns there are? Specifically I would like to do something like this: \starttext \bTABLE \bTR \bTD[nc=<all>] I span all the columns \eTD \eTR \bTR \bTD col 1 \eTD \bTD col 2 \eTD <...> \bTD col n \eTD \eTR \eTABLE \stoptext Is there any expression for <all> that yields the total number of columns? I tried to use \tablecellcolumns but it is undefined if used at this location. Thank you for any feedback! Christoph Reller

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Re: [NTG-context] Erratic error message
by Robert Blackstone 23 Sep '14

23 Sep '14

On 17 Sep 2014, at 19:38 , Hans Hagen <pragma(a)wxs.nl> wrote > > On 9/17/2014 12:59 PM, Robert Blackstone wrote: >> >> Hi all, >> >> When typesetting my project with interaction, sometimes the processing >> stops after a few runs with an error message that points at an empty >> line in one of the chapters that normally gives no trouble. > > a minimal example is needed HI Hans, I have tested this project down to every little snippett and I never get this error with the message as described, unless the whole project, a book of about 450 pages with around 400 graphics, is processed with interaction, and even then it does not always occur. It may or may not happen. I would not know how to make a minimal example that will consistently give the error. I had hoped that this text in the error message: “Attempt to double-free dir node 54467, ignored” would contain some information as to what might be wrong, but apparently it does not. Anyway, thanks for your attention. Best regards, Robert

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Flushed right formula numbers in cases environment
by Maggyero 22 Sep '14

22 Sep '14

I want to have the formula numbers of cases environment flushed on the right like for regular formulas (not the default numberdistance=2.5\emwidth). How can I do that? \starttext \startplaceformula \startformula \startcases \NC x = 1 \NR[+] \NC y = 1 \NR[+] \stopcases \stopformula \stopplaceformula \stoptext

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\definedescription question
by Gerben Wierda 22 Sep '14

22 Sep '14

I have this definition: \definedescription[Member][headstyle=bold, location=hanging,width=fit] What do I need to do if my description item has multiple paragraphs? A \par ends the description, so I need a definition of some sort of followup item without the heading. How do I do that? I'm using mkii. G

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How do I get indenting in multi-paragraph \endnotes?
by Gerben Wierda 22 Sep '14

22 Sep '14

I have a couple of \endnotes that are multi-paragraph, but the second and rest paragraphs are not indented, while my text is. I tried adding \indenting[yes] to them explicitly, but that is apparently not enough. How can I set this up? I'm using mkii. Thanks, G

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s-mod produces "system > error: invalid parameter ..."
by Christoph Reller 21 Sep '14

21 Sep '14

Hi, Probably this is a minor thing. When processing the following module template: %D \module[ %D file=p-Mymod, %D title=The Mymod Module, %D author=The Author, %D date=\currentdate, %D ] %M \usemodule[Mymod] %D Hello \writestatus{loading}{ConTeXt User Module / Mymod} \unprotect \protect \endinput with: context --ctx=s-mod p-Mymod.mkiv then the console output contains: system > error: invalid parent type for parametercommand, type defined too (best check it) The output module documentation is, however, produced correctly. I assume that this is harmless, but it would be nice if the log file contained no "error" message if the processing was successful. Thank you for any feedback, Christoph Reller

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Re: [NTG-context] How to get parameters in lua
by Christoph Reller 21 Sep '14

21 Sep '14

On 9/19/2014 9:30 AM, Christoph Reller wrote: > > Hi, > > > > \installcommandhandler nicely provides (among others) \define<name> and > > \setup<name> commands. Thus it is easy to provide a key with > > \setup<name>[key=value] and to read the value of such a key with > > \<name>parameter{key}. > > > > My question is: How do I read the value of a key defined with > > \setup...[key=value] on the lua side? If I use > > context.<name>parameter("key") > > then the value of key is printed directly. I want to be able to read > > that value and use it in lua with something like > > myvariable = context.?whatfunction?("key") > > > > Here is some example code: > > > > \unprotect > > > > \startluacode > > function myfun(parameters,content) > > context("From lua: Parameters: ") > > context(parameters) > > context.elemparameter("gkey") -- directly prints the parameter > > context.par() > > end > > \stopluacode > > > > \installnamespace{elem} > > \installcommandhandler \????elem {elem} \????elem > > \appendtoks > > \setuevalue{\currentelem}{\elem_cmd{\currentelem}}% > > \to \everydefineelem > > > > \unexpanded\def\elem_cmd#environment{% > > \edef\currentelem{#environment}% > > \dosingleempty\elem_cmd_parameters} > > > > \def\elem_cmd_parameters[#parameters]#content{% > > \setupcurrentelem[#parameters] > > From \TeX\: Parameters: key=\elemparameter{key}, > > gkey=\elemparameter{gkey}\par > > > > \ctxlua{myfun(\!!bs#parameters\!!es,\!!bs\normalunexpanded{#content}\!!es)} > > } > > > > \defineelem[base] > > \setupelem[gkey=gval] > > > > \protect > > > > \starttext > > > > \base[key=val]{Hello} > > > > \stoptext > > > > Thank you for any feedback, On Fri, Sep 19, 2014 at 12:00 PM, Hans Hagen wrote: > something like this ... keep in mind that there is no grouping in lua > > % macros=mkvi > > \unprotect > > \installnamespace{elem} > > \installcommandhandler \????elem {elem} \????elem > > \startluacode > userdata.elem = { data = { [""] = { } } } > > function userdata.elem.define(namespace,parent) > print("define",namespace,parent) > userdata.elem.data[namespace] = { } > if namespace ~= parent then > > table.setmetatableindex(userdata.elem.data[namespace],userdata.elem.data[parent]) > end > end > > function userdata.elem.setup(namespace,key,gkey) > print("setup",namespace,key,gkey) > userdata.elem.data[namespace].key = key > userdata.elem.data[namespace].gkey = gkey > end > > function userdata.myfun(namespace,one,two) > context.par() > context("elem: one=%s",userdata.elem.data[namespace][one]) > context.par() > context("elem: two=%s",userdata.elem.data[namespace][two]) > context.par() > end > \stopluacode > > \appendtoks > \setuevalue{\currentelem}{\elem_cmd{\currentelem}}% > \ctxlua{userdata.elem.define("\currentelem","\currentelemparent")}% > \to \everydefineelem > > \appendtoks > > \ctxlua{userdata.elem.setup("\currentelem","\elemparameter{key}","\elemparameter{gkey}")}% > \to \everysetupelem > > \unexpanded\def\elem_cmd#environment% > {\edef\currentelem{#environment}% > \dosingleempty\elem_cmd_parameters} > > \def\elem_cmd_parameters[#parameters]#content% > {\setupelem[\currentelem][#parameters] > From \TeX\: Parameters: key=\elemparameter{key}, > gkey=\elemparameter{gkey}\par > \ctxlua{userdata.myfun("\currentelem","key","gkey")}} > > \defineelem[base] > \setupelem[gkey=gval] > > \protect > > \starttext > > \base[key=val]{Hello} > > \stoptext > > A simpler alternative is: > > % macros=mkvi > > \unprotect > > \installnamespace{elem} > > \installcommandhandler \????elem {elem} \????elem > > \startluacode > userdata.elem = { data = { } } > > function userdata.elem.sync(key,gkey) > userdata.elem.data.key = key > userdata.elem.data.gkey = gkey > end > > function userdata.myfun(one,two) > context.par() > context("elem: one=%s",userdata.elem.data[one]) > context.par() > context("elem: two=%s",userdata.elem.data[two]) > context.par() > end > \stopluacode > > \appendtoks > \setuevalue{\currentelem}{\elem_cmd{\currentelem}}% > \to \everydefineelem > > \unexpanded\def\elem_cmd#environment% > {\edef\currentelem{#environment}% > \dosingleempty\elem_cmd_parameters} > > \unexpanded\def\elem_sync > > {\ctxlua{userdata.elem.sync("\elemparameter{key}","\elemparameter{gkey}")}} > > \def\elem_cmd_parameters[#parameters]#content% > {\setupcurrentelem[#parameters] > \elem_sync > From \TeX\: Parameters: key=\elemparameter{key}, > gkey=\elemparameter{gkey}\par > \ctxlua{userdata.myfun("key","gkey")}} > > \defineelem[base] > \setupelem[gkey=gval] > > \protect > > \starttext > > \base[key=val]{Hello} > > \stoptext Thank you Hans! Two general questions arise (if your permit): 1. Where are the key-value pairs stored? In your first solution you handle the key setting by explicitly calling lua on every \setup<name> call. It seems that all key-value pairs (that are set with \installcommandhandler-generated \setup<name>) are stored on the TeX side and not on the lua side. Is this correct? 2. Calling \ctxlua from lua. I was tempted to add another level of indirection to your second (the "synchronize") solution. I.e: in the lua code (in a separate lua file to avoid the do ... end introduced by \startluacode ... \stopluacode) I have: n = "" v = "" function getkey(name,value) n = name v = value end function myfun(parameters,content) context([[\ctxlua{getkey("gkey","\elemparameter{gkey}")}]]) context(" name=") context(n) context(", value=") context(v) end The above does not work because the value obtained "lags behind", i.e. initially v will be "", on the second call v will have the value of the first \setupelem[gkey=gval], and so on. I guess this lag is due to the way TeX and lua communicate to each other? A small question: What do you mean by "there is no grouping in lua"? Thank you anyway for your valuable input. Regards, Christoph

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Influencing the vertical spacing of the table of contents?
by Gerben Wierda 21 Sep '14

21 Sep '14

I'm using mkii. I've got a table of contents that just places one item on the next page, which is ugly. I'd like to tweak the spacing between lines, but which parameter do I have to adjust? It wasn't clear to me from the docs. Thanks, G

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