- ntg-context - Mailing Lists

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 23 Sep '14

23 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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Main or Overall Index of a series of volumes
by Rudolf Bahr 20 Sep '14

20 Sep '14

Hello All, just to plan in advance: I'd like to construct a main or overall index out of the indices of a series of rather big volumes with their own page numbering from 1 to (say) 1000. Of course the intended main or overall index should point not only to a page number, but to the corresponding volume number or title too. Is that fundamentally possible and if yes how? Greetings, Rudolf

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perfect centering of layers in a text area
by Bernd Donner 20 Sep '14

20 Sep '14

Hello, I'm converting some context from mkii to mkiv. Since the definelogo is depreciated I try to use layers to get the same result. The problem in the example below is, the text in the header - which is a table - is not perfectly centered with respect to the bottomframe. What is the reason that the table is not perfectly centered with respect to the line and what is the correct solution? Thank you, Bernd \setuppapersize[A4] \language[de] \enableregime[utf] \setuplayout[backspace=2.0cm, height=fit, width=fit, rightmarginwidth=0.0cm, leftmargin=1.8cm, footerdistance=0.0cm, rightmargindistance=0.2cm, rightmargin=1.8cm, bottom=0.5cm, leftmargindistance=0.2cm, header=0.4cm, headerdistance=0.5cm, footer=0.5cm, top=0.0cm, topspace=0.0cm, bottomspace=0.0cm] \definelayer[sabel] [x=0mm, y=0mm, width=\paperwidth, height=\paperheight, preset=lefttop] \startsetups layer \setlayer[sabel] [hoffset=0mm, voffset=0mm] {\tfx{\vbox {\bTABLE[option=stretch] \setupTABLE[rulethickness=0pt] \setupTABLE[column][1][align={right}, width=.4\textwidth] \setupTABLE[column][2][align={center}] \setupTABLE[column][3][align={left}, width=.4\textwidth] \bTR \bTD I want to be \eTD \bTD \eTD \bTD perfectly centered \eTD \eTR \eTABLE}}} \stopsetups \setupbackgrounds[header][text][bottomframe=on, setups=layer, background=sabel] \setuppagenumbering[location=] \starttext thx \stoptext

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How to get parameters in lua
by Christoph Reller 19 Sep '14

19 Sep '14

Hi, \installcommandhandler nicely provides (among others) \define<name> and \setup<name> commands. Thus it is easy to provide a key with \setup...[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, Christoph Reller

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