Re: [NTG-context] Include chapter number in figure numbering
On 2012-09-04 Sietse Brouwer sbbrou...@gmail.com wrote: Hi Sietse, how do I include the chapter number in the figure numbering? Untested: \setupcaptions[prefixsegment=chapter] This works with beta 2011-11-29, but unfortunately not in a current one. Does it work for you? Marco ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Include chapter number in figure numbering
how do I include the chapter number in the figure numbering? Untested: \setupcaptions[prefixsegment=chapter] This works with beta 2011-11-29, but unfortunately not in a current one. Does it work for you? You're right: it doesn't work for me, either. A bug, then, or possibly an unannounced interface change. --Sietse ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
[NTG-context] \startchapter[title=Test] is not working inside \startcomponent
Dear Listers, \startchapter[title=Test] is working inside \starttext and \stoptext. But it is not working inside \startcomponent and \stopcomponent. Is it a natural behavior? I am using iMac, OSX Mountain Lion. And the ConTeXt version is ConTeXt ver: 2012.08.28 20:00 MKIV fmt: 2012.9.4 int: english/english A short test file is: %\startcomponent \starttext \startchapter[title=Test] \input knuth \stopchapter \stoptext %\stopcomponent Thank you for reading. Best regards, Dalyoung ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] \startchapter[title=Test] is not working inside \startcomponent
On 2012-09-04 Jeong Dalyoung hak...@me.com wrote: Hi Jeong, \startchapter[title=Test] is working inside \starttext and \stoptext. But it is not working inside \startcomponent and \stopcomponent. Is it a natural behavior? Yes. \startcomponent expects an argument. \startcomponent somecomponent or \startcomponent * http://wiki.contextgarden.net/Command/startcomponent Marco ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
[NTG-context] Component: \product, \project
Hello, when looking at http://wiki.contextgarden.net/Project_structure - - why \product and/or \project specification is used in the COMPONENT in the example, or why is it supposed or even required to use in components? I imagined that component doesn't need to know in which project/product is used, even when in may be intended to more projects/products. So does it mean I would have to enumerate all projects/products in which the component is to be used? Or can be \product and/or \project specification omitted in the component? Best regards, Lukas -- Ing. Lukáš Procházka [mailto:l...@pontex.cz] Pontex s. r. o. [mailto:pon...@pontex.cz] [http://www.pontex.cz] Bezová 1658 147 14 Praha 4 Tel: +420 244 062 238 Fax: +420 244 461 038 ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] \startchapter[title=Test] is not working inside \startcomponent
Dear Marco, Aha, I missed to put the name of the component. With the component name, it works fine. I am sorry for the noise. Thank you. Best regards, Dalyoung ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] ConTeXt color to text
Am 03.09.2012 20:36, schrieb Hans Hagen:
On 3-9-2012 18:59, Peter Rolf wrote:
Hi,
for a batch command (ImageMagick) I need to convert ConTeXt colors to a
text representation (e.g. rgb 'red' - 'rgb(255,0,0)'; same for color
models cmyk and gray).
What is the best way to get (read only) access to the color channels of
a defined color?
\colorcomponents{red}
\colorvalue{red}
in next beta:
\startluacode
-- inspect(attributes.colors.spec(red))
Thanks Hans, very nice. Looking out for the next beta. I'll use the time
to check some other problems :-)
-- table={
-- [b]=0,
-- [c]=0,
-- [model]=cmyk,
-- [g]=0,
-- [k]=0,
-- [m]=1,
-- [r]=1,
-- [s]=0.3,
-- [y]=1,
-- }
\stopluacode
-
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| www.pragma-pod.nl
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Re: [NTG-context] Stretching width in natural TABLEs
Hello, On Tue, 04 Sep 2012 05:02:01 +0200, Rogers, Michael K mrog...@emory.edu wrote: That's what I was afraid. It's just I had the same problem last week, and a deadline made me settle for the ad hoc approach. I was trying to solve the same situation several week ago. Finally, I measured what the fit option of the first column mean in real units (cm) and I altered widths of remaining columns to get \textwidth in total, which is ugly and non-systematic solution. So it seems that there is a task for natural TABLEs: Suppose one or more columns have fit width, so the width is computed at run-time. Suppose the total width of the table is defined, too. How to specify width of other columns to have a specified ratio? E.g.: col1.width=fit - will be a concrete value at run-time, 'col1.width.real' col2.width=fit - will be a concrete value at run-time, 'col2.width.real' TABLE.tot.width=\textwidth col3.width.weight=1 col4.width.weight=2 should give col3.width = (TABLE.tot.width - col1.width.real - col2.width.real) / (col3.width.weight + col4.width.weight) * col3.width.weight col4.width = (TABLE.tot.width - col1.width.real - col2.width.real) / (col3.width.weight + col4.width.weight) * col4.width.weight Best regards, Lukas -- Ing. Lukáš Procházka [mailto:l...@pontex.cz] Pontex s. r. o. [mailto:pon...@pontex.cz] [http://www.pontex.cz] Bezová 1658 147 14 Praha 4 Tel: +420 244 062 238 Fax: +420 244 461 038 ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Include chapter number in figure numbering
On Sep 4, 2012, at 4:00 AM, Sietse Brouwer wrote:
how do I include the chapter number in the figure numbering?
Untested:
\setupcaptions[prefixsegment=chapter]
This works with beta 2011-11-29, but unfortunately not in a current
one. Does it work for you?
You're right: it doesn't work for me, either. A bug, then, or possibly
an unannounced interface change.
--Sietse
I think the key name is plural, and you need to turn on prefixes. Try
\setupcaptions[prefix=yes,prefixsegments=chapter]
\starttext
\chapter{One}
\section{Cow}
\placefigure{Caption}{\externalfigure[cow][width=2cm]}
Text.
\section{Cow revisited}
\placefigure{Caption}{\externalfigure[cow][width=2cm]}
Text.
\chapter{Two}
\placefigure{Caption}{\externalfigure[cow][width=2cm]}
Text.
\stoptext
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Re: [NTG-context] Component: \product, \project
Hello Lukáš, I imagined that component doesn't need to know in which project/product is used, even when in may be intended to more projects/products. Usually, projects (collections of environment files) are applied at the product level. Sometimes, however, you want to apply one at the component level, so you put a \project in the \startcomponent. You never need to put \product anywhere. Clearer descriptions of what the commands \project and \product do can be found on the command pages; same for all the other structure commands. The [[Project structure]] page is indeed confusing, it needs a better structure itself. Description from http://wiki.contextgarden.net/Command/project: When used inside a \startproduct or \startcomponent environment, \project is an instruction to source any \environment files linked in the project file. Description from http://wiki.contextgarden.net/Command/product: The command \product does not do anything: to link a product to a project file, one should use \project inside the product. Nonetheless, the \product command is often used inside project files as a reminder of what products the project involves. Hope this helps. Kind regards, Sietse ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Include chapter number in figure numbering
On 2012-09-04 Rogers, Michael K mrog...@emory.edu wrote: Hi Rogers, I think the key name is plural, and you need to turn on prefixes. \setupcaptions[prefix=yes,prefixsegments=chapter] Thanks, that works. I updated the wiki. Marco ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Include chapter number in figure numbering
On 4 Sep 2012, at 10:46 , 08:55:10 +0200 Marco Patzer home...@lavabit.com wrot Hi Sietse, how do I include the chapter number in the figure numbering? Untested: \setupcaptions[prefixsegment=chapter] This works with beta 2011-11-29, but unfortunately not in a current one. Does it work for you? Hi, This works (for me) in mkiv of 25-08-2012: \setupcaption[figure][number=yes,way=bychapter,prefix=yes,prefixsegments=chapter] Best regards, Robert Blackstone ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Component: \product, \project
... Thanks for explanation, it's much clearer now. Best regards, Lukas On Tue, 04 Sep 2012 13:57:50 +0200, Sietse Brouwer sbbrou...@gmail.com wrote: Hello Lukáš, Usually, projects (collections of environment files) are applied at the product level. Sometimes, however, you want to apply one at the component level, so you put a \project in the \startcomponent. You never need to put \product anywhere. Clearer descriptions of what the commands \project and \product do can be found on the command pages; same for all the other structure commands. The [[Project structure]] page is indeed confusing, it needs a better structure itself. Description from http://wiki.contextgarden.net/Command/project: When used inside a \startproduct or \startcomponent environment, \project is an instruction to source any \environment files linked in the project file. Description from http://wiki.contextgarden.net/Command/product: The command \product does not do anything: to link a product to a project file, one should use \project inside the product. Nonetheless, the \product command is often used inside project files as a reminder of what products the project involves. Hope this helps. Kind regards, Sietse -- Ing. Lukáš Procházka [mailto:l...@pontex.cz] Pontex s. r. o. [mailto:pon...@pontex.cz] [http://www.pontex.cz] Bezová 1658 147 14 Praha 4 Tel: +420 244 062 238 Fax: +420 244 461 038 ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
[NTG-context] Lua conditionals fail inside \starttexdefinition
Hi,
I discovered strange behaviour concerning Lua conditionals within
texdefinitions.
ConTeXt complains: 'then' expected near 'thenelseend'.
I guess it has something to do with how the content of a
texdefinitions is grabbed. Seems like a bug or is this by design?
% This works fine
\def\mycmd{%
\startluacode
if true then
else
end
\stopluacode}
% This one fails
% \starttexdefinition mycmd
% \startluacode
% if true then
% else
% end
% \stopluacode
% \stoptexdefinition
\startluacode
userdata = userdata or { }
function userdata.myfun()
if true then
else
end
end
\stopluacode
% This also works fine
\starttexdefinition mycmd
\luacode{userdata.myfun()}
\stoptexdefinition
\mycmd
Marco
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[NTG-context] External Figure inside MPpage
I was wondering if there is a way to place an external figure (JPG/PDF) inside a MPpage. The following does not work. \startMPpage \externalfigure[spiral/andrew/andrew.jpg][height=4.75in] \stopMPpage Troy Henderson ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Lua conditionals fail inside \starttexdefinition
Am 04.09.2012 um 14:21 schrieb Marco Patzer home...@lavabit.com: Hi, I discovered strange behaviour concerning Lua conditionals within texdefinitions. ConTeXt complains: 'then' expected near 'thenelseend'. I guess it has something to do with how the content of a texdefinitions is grabbed. Seems like a bug or is this by design? When you use the texdefinition environment to create a command the end of line character which results normally in a space is ignored sees “thenelseend” as a single string, in such a case you can add a space and put a comment sign at the end of the line. % This one fails % \starttexdefinition mycmd % \startluacode % if true then % else % end % \stopluacode % \stoptexdefinition \starttexdefintion mycmd \startluacode if true then % else % end \stopluacode \stoptexdefinition Wolfgang ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] External Figure inside MPpage
Am 04.09.2012 um 14:23 schrieb Troy Henderson thend...@gmail.com: I was wondering if there is a way to place an external figure (JPG/PDF) inside a MPpage. The following does not work. \startMPpage \externalfigure[spiral/andrew/andrew.jpg][height=4.75in] \stopMPpage \startMPpage draw externalfigure mill scaled 4.75in ; \stopMPpage Wolfgang ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] External Figure inside MPpage
\startMPpage draw externalfigure mill scaled 4.75in ; \stopMPpage Excellent. Thank you! Troy ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
[NTG-context] \startluacode and macro names with underscores
Hi,
the luacode environment chokes on macro names with underscores.
Example:
\starttext
\unprotect
\def\number_two{two}
\startluacode
userdata = userdata or { }
function userdata.number_one() context(one) end
-- works
userdata.number_one()
-- fails
-- context.number_two()
-- workaround
tex.print(\\number_two)
\stopluacode
\protect
\stoptext
Why is that and what can be done to access underscored macros in the
usual way? I guess it's some catcode change from the function that
prints into the TeX stream.
Marco
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Re: [NTG-context] \startluacode and macro names with underscores
Am 04.09.2012 um 15:40 schrieb Marco Patzer home...@lavabit.com:
Hi,
the luacode environment chokes on macro names with underscores.
Example:
\starttext
\unprotect
\def\number_two{two}
\startluacode
userdata = userdata or { }
function userdata.number_one() context(one) end
-- works
userdata.number_one()
-- fails
-- context.number_two()
-- workaround
tex.print(\\number_two)
\stopluacode
\protect
\stoptext
Why is that and what can be done to access underscored macros in the
usual way? I guess it's some catcode change from the function that
prints into the TeX stream.
Use this in your Lua code:
context.unprotect()
context.number_two()
context.protect()
Wolfgang
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Re: [NTG-context] \startluacode and macro names with underscores
On 4-9-2012 15:40, Marco Patzer wrote:
Hi,
the luacode environment chokes on macro names with underscores.
Example:
\starttext
\unprotect
\def\number_two{two}
\startluacode
userdata = userdata or { }
function userdata.number_one() context(one) end
-- works
userdata.number_one()
-- fails
-- context.number_two()
-- workaround
tex.print(\\number_two)
\stopluacode
\protect
\stoptext
Why is that and what can be done to access underscored macros in the
usual way? I guess it's some catcode change from the function that
prints into the TeX stream.
\starttext
\unprotect
\def\number_two{two}
\protect
\startluacode
userdata = userdata or { }
function userdata.number_one() context(one) end
userdata.number_one()
context.unprotect()
context.number_two()
context.protect()
context.pushcatcodes(prt)
context.number_two()
context.popcatcodes()
\stopluacode
\stoptext
-
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Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| www.pragma-pod.nl
-
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Re: [NTG-context] Setting options for every n-th row in natural TABLEs
On 2-9-2012 20:58, Wolfgang Schuster wrote: Am 02.09.2012 um 17:59 schrieb Aditya Mahajan adit...@umich.edu: Hi, On Edward Tufte's website, there is a discussion on zebra coloring in tables[1]. One of the suggestion is to add a horizontal rule after every third line or shade three lines with one background color and the remaining three with another background color. Is there an easy way to do this with natural TABLEs? I can do something like: \setupTABLE[row][1,2,3][background=color, backgroundcolor=gray] \setupTABLE[row][7,8,9][background=color, backgroundcolor=gray] but it requires knowing the number of lines in advance. Aditya [1]: http://www.edwardtufte.com/bboard/q-and-a-fetch-msg?msg_id=0001IV Natural tables have “odd” and “even” keywords for \setupTABLE but none in the way you like it. What I would do is to use a overlay in combination with metapost to create the background but there is no global register to access the current column/row of a cell, e.g. \currenttablecolumn (this name is already used by tables) and \currenttablerow. I've added 4 status macros: \starttext \bTABLE \bTR \bTD (\currentTABLErow,\currentTABLEcolumn,\nofTABLErows,\nofTABLEcolumns) \eTD \bTD (\currentTABLErow,\currentTABLEcolumn,\nofTABLErows,\nofTABLEcolumns) \eTD \bTD (\currentTABLErow,\currentTABLEcolumn,\nofTABLErows,\nofTABLEcolumns) \eTD \bTD (\currentTABLErow,\currentTABLEcolumn,\nofTABLErows,\nofTABLEcolumns) \eTD \eTR \bTR \bTD (\currentTABLErow,\currentTABLEcolumn,\nofTABLErows,\nofTABLEcolumns) \eTD \bTD (\currentTABLErow,\currentTABLEcolumn,\nofTABLErows,\nofTABLEcolumns) \eTD \bTD (\currentTABLErow,\currentTABLEcolumn,\nofTABLErows,\nofTABLEcolumns) \eTD \bTD (\currentTABLErow,\currentTABLEcolumn,\nofTABLErows,\nofTABLEcolumns) \eTD \eTR \eTABLE \stoptext - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com | www.pragma-pod.nl - ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
[NTG-context] TeX expansion within lua
Hi,
please have a look at the following example:
\starttext
\def\cmd{%
\def\mymacro{Foobar}
\newtoks\mytoks
\mytoks={mytoks}}
\startluacode
context.cmd()
context.mymacro()
-- this fails
-- context(tex.toks.mytoks)
\stopluacode
-- this works
\startluacode
context(tex.toks.mytoks)
\stopluacode
\stoptext
Why does the first call to tex.toks.mytoks fail?
Apparently the luacode environment has to be closed for cmd to be
expanded. I guess that the call to mymacro() succeeds is a quirk due
to the face that the macro is expanded later, in contrast to tokens,
dimens and counters.
Is there a command I can use within Lua to expand a macro
immediately or to expand the pending macros to be able to access the
values like the token register in the example?
Another question which is related:
Is there a way to access the contents of the macro from within Lua
like counters and token registers?
\starttext
\newtoks\mytoks
\mytoks={Foobar}
\startluacode
local tok = tex.toks.mytoks
-- something like this is what I have in mind
-- local mac = tex.macros.somemacro
\stopluacode
\stoptext
I am just interested in a text string, not a box with typeset
material. I guess that's more difficult, since macros are expanded
and not just simply read.
Marco
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___
Re: [NTG-context] Setting options for every n-th row in natural TABLEs
On Tue, 4 Sep 2012, Hans Hagen wrote: I've added 4 status macros: \starttext \bTABLE \bTR \bTD (\currentTABLErow,\currentTABLEcolumn,\nofTABLErows,\nofTABLEcolumns) \eTD \bTD (\currentTABLErow,\currentTABLEcolumn,\nofTABLErows,\nofTABLEcolumns) \eTD \bTD (\currentTABLErow,\currentTABLEcolumn,\nofTABLErows,\nofTABLEcolumns) \eTD \bTD (\currentTABLErow,\currentTABLEcolumn,\nofTABLErows,\nofTABLEcolumns) \eTD \eTR \bTR \bTD (\currentTABLErow,\currentTABLEcolumn,\nofTABLErows,\nofTABLEcolumns) \eTD \bTD (\currentTABLErow,\currentTABLEcolumn,\nofTABLErows,\nofTABLEcolumns) \eTD \bTD (\currentTABLErow,\currentTABLEcolumn,\nofTABLErows,\nofTABLEcolumns) \eTD \bTD (\currentTABLErow,\currentTABLEcolumn,\nofTABLErows,\nofTABLEcolumns) \eTD \eTR \eTABLE \stoptext Thanks! Aditya ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] TeX expansion within lua
On Tue, 4 Sep 2012, Marco Patzer wrote:
Hi,
please have a look at the following example:
\starttext
\def\cmd{%
\def\mymacro{Foobar}
\newtoks\mytoks
\mytoks={mytoks}}
\startluacode
context.cmd()
context.mymacro()
-- this fails
-- context(tex.toks.mytoks)
\stopluacode
-- this works
\startluacode
context(tex.toks.mytoks)
\stopluacode
\stoptext
Why does the first call to tex.toks.mytoks fail?
Apparently the luacode environment has to be closed for cmd to be
expanded. I guess that the call to mymacro() succeeds is a quirk due
to the face that the macro is expanded later, in contrast to tokens,
dimens and counters.
Is there a command I can use within Lua to expand a macro
immediately or to expand the pending macros to be able to access the
values like the token register in the example?
Instead of
context(tex.toks.mytoks)
use
context(function () context(tex.toks.mytoks) end)
See the ConTeXt Lua Document manual for explanation.
Another question which is related:
Is there a way to access the contents of the macro from within Lua
like counters and token registers?
\starttext
\newtoks\mytoks
\mytoks={Foobar}
\startluacode
local tok = tex.toks.mytoks
-- something like this is what I have in mind
-- local mac = tex.macros.somemacro
\stopluacode
\stoptext
I am just interested in a text string, not a box with typeset
material. I guess that's more difficult, since macros are expanded
and not just simply read.
AFAIK, this is not possible.
Aditya
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Re: [NTG-context] TeX expansion within lua
On 2012-09-04 Aditya Mahajan adit...@umich.edu wrote:
Hi Aditya,
Instead of
context(tex.toks.mytoks)
use
context(function () context(tex.toks.mytoks) end)
See the ConTeXt Lua Document manual for explanation.
Thanks. This works indeed. But what to do in the following
case? It's hard to find a proper wording for this problem which
makes searching on the net or in the documentation difficult.
\starttext
\def\cmd
{\newdimen\mydimen
\mydimen=50pt}
\startluacode
context.cmd()
if tex.dimen.mydimen tex.dimen.textwidth then
context(is smaller)
else
context(is not smaller)
end
\stopluacode
\stoptext
Is there a way to access the contents of the macro from within Lua
like counters and token registers?
[…]
AFAIK, this is not possible.
Thanks.
Marco
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Re: [NTG-context] TeX expansion within lua
2012/9/4 Marco Patzer home...@lavabit.com: I am just interested in a text string, not a box with typeset material. I guess that's more difficult, since macros are expanded and not just simply read. http://tracker.luatex.org/view.php?id=682 Best Martin ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Setting options for every n-th row in natural TABLEs
http://wiki.contextgarden.net/Command/currentTABLErow http://wiki.contextgarden.net/Command/currentTABLEcolumn http://wiki.contextgarden.net/Command/nofTABLErows http://wiki.contextgarden.net/Command/nofTABLEcolumns A bit of cutting, a bit of pasting ... the six-year-old in me is happy. :-) --Sietse ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] TeX expansion within lua
On 2012-09-04 Martin Schröder mar...@oneiros.de wrote:
Hi Martin,
http://tracker.luatex.org/view.php?id=682
It seems that I just hit a very hard to solve issue which needs
not yet available support from the luatex side.
Patricks solution seems not very practical and error prone, so I
settled with this ugly but still readable workaround:
\def\cmd
{\newdimen\mydimen
\mydimen=50pt}
\starttexdefinition action
\cmd
\startluacode
if tex.dimen.mydimen tex.dimen.textwidth then %
context(is smaller)
else %
context(is not smaller)
end %
\stopluacode
\stoptexdefinition
\action
Marco
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Re: [NTG-context] TeX expansion within lua
Am 04.09.2012 um 19:40 schrieb Marco Patzer home...@lavabit.com:
On 2012-09-04 Martin Schröder mar...@oneiros.de wrote:
Hi Martin,
http://tracker.luatex.org/view.php?id=682
It seems that I just hit a very hard to solve issue which needs
not yet available support from the luatex side.
Patricks solution seems not very practical and error prone, so I
settled with this ugly but still readable workaround:
\def\cmd
{\newdimen\mydimen
\mydimen=50pt}
\starttexdefinition action
\cmd
\startluacode
if tex.dimen.mydimen tex.dimen.textwidth then %
context(is smaller)
else %
context(is not smaller)
end %
\stopluacode
\stoptexdefinition
\action
Is there a good reason why you put \newdimen because dimen/count etc. registers
should always be defined once.
Wolfgang
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Re: [NTG-context] TeX expansion within lua
On 2012-09-04 Wolfgang Schuster wolfgang.schus...@gmail.com wrote: Is there a good reason why you put \newdimen because dimen/count etc. registers should always be defined once. The definitions are not in a macro, they are defined at the top of the file. I messed around while creating a minimal example. However, the problem remains the same since the assignment does not happen within Lua. But, thanks for the hint. I am always happy for improvements and feedback about my code. Marco ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Lua conditionals fail inside \starttexdefinition
On Tue, 4 Sep 2012, Wolfgang Schuster wrote: Am 04.09.2012 um 14:21 schrieb Marco Patzer home...@lavabit.com: Hi, I discovered strange behaviour concerning Lua conditionals within texdefinitions. ConTeXt complains: 'then' expected near 'thenelseend'. I guess it has something to do with how the content of a texdefinitions is grabbed. Seems like a bug or is this by design? When you use the texdefinition environment to create a command the end of line character which results normally in a space is ignored sees “thenelseend” as a single string, in such a case you can add a space and put a comment sign at the end of the line. % This one fails % \starttexdefinition mycmd % \startluacode % if true then % else % end % \stopluacode % \stoptexdefinition \starttexdefintion mycmd \startluacode if true then % else % end \stopluacode \stoptexdefinition Why does adding semicolon not work? Aditya___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] TeX expansion within lua
Am 04.09.2012 um 20:11 schrieb Marco Patzer home...@lavabit.com:
On 2012-09-04 Wolfgang Schuster wolfgang.schus...@gmail.com wrote:
Is there a good reason why you put \newdimen because dimen/count
etc. registers should always be defined once.
The definitions are not in a macro, they are defined at the top of
the file. I messed around while creating a minimal example. However,
the problem remains the same since the assignment does not happen
within Lua.
But, thanks for the hint. I am always happy for improvements and
feedback about my code.
What prevents you from setting the dimen value in Lua?
\starttext
\scratchdimen = 20pt
\the\scratchdimen
\ctxlua{tex.dimen.scratchdimen = 10pt}
\the\scratchdimen
\stoptext
Wolfgang
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Re: [NTG-context] Lua conditionals fail inside \starttexdefinition
Am 04.09.2012 um 20:24 schrieb Aditya Mahajan adit...@umich.edu: Why does adding semicolon not work? Do you have a example? Wolfgang ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Lua conditionals fail inside \starttexdefinition
On 2012-09-04 Wolfgang Schuster wolfgang.schus...@gmail.com wrote: Why does adding semicolon not work? Do you have a example? \starttext \startluacode if true then; context(true) else; context(false) end \stopluacode \stoptext Marco ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Lua conditionals fail inside \starttexdefinition
Am 04.09.2012 20:44, schrieb Marco Patzer: On 2012-09-04 Wolfgang Schuster wolfgang.schus...@gmail.com wrote: Why does adding semicolon not work? Do you have a example? \starttext \startluacode if true then; context(true) else; context(false) end \stopluacode \stoptext that is no Lua syntax Herbert ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] TeX expansion within lua
On 2012-09-04 Wolfgang Schuster wolfgang.schus...@gmail.com wrote: What prevents you from setting the dimen value in Lua? Some background: The code is part of a smarter float placement. It takes the size of the float into account and decides for a location. For example, it positions the float in the margin if it fits or it prints the caption underneath the float if the float spans the margin as well (captions are in the margin by default in this layout). Most of the code is written in TeX and I don't feel it's necessary to rewrite it in Lua. I am more fluent in TeX than in Lua. In this case a TeX helper function computes the size and saves the results in dimen registers. I use Lua for calculations especially when it comes to dimensions. It's a nightmare in TeX and hard to find errors easily creep in. Marco ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Lua conditionals fail inside \starttexdefinition
On 2012-09-04 Herbert Voss herbert.v...@fu-berlin.de wrote: Hi Herbert, \starttext \startluacode if true then; context(true) else; context(false) end \stopluacode \stoptext that is no Lua syntax if true then; print(true) else; print(false) end This snippet fed into a standalone Lua interpreter prints “true” on the terminal. I admit, I did not look up the syntax in the manual, but I have in mind that semicolons can be used to separate statements that are on one line. Marco ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Lua conditionals fail inside \starttexdefinition
On Tue, 4 Sep 2012, Herbert Voss wrote: Am 04.09.2012 20:44, schrieb Marco Patzer: On 2012-09-04 Wolfgang Schuster wolfgang.schus...@gmail.com wrote: Why does adding semicolon not work? Do you have a example? \starttext \startluacode if true then; context(true) else; context(false) end \stopluacode \stoptext that is no Lua syntax I thought that semicolons were optional in lua are equal to end of lines. Aditya ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Lua conditionals fail inside \starttexdefinition
On Tue, Sep 4, 2012 at 9:05 PM, Marco Patzer home...@lavabit.com wrote: On 2012-09-04 Herbert Voss herbert.v...@fu-berlin.de wrote: Hi Herbert, \starttext \startluacode if true then; context(true) else; context(false) end \stopluacode \stoptext that is no Lua syntax if true then; print(true) else; print(false) end This snippet fed into a standalone Lua interpreter prints “true” on the terminal. Not in my lua interpreter: saving the snippet into test.lua $lua test.lua gives lua: test.lua:1: unexpected symbol near ';' -- luigi ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Lua conditionals fail inside \starttexdefinition
Am 04.09.2012 21:05, schrieb Marco Patzer: if true then; print(true) else; print(false) end This snippet fed into a standalone Lua interpreter prints “true” on the terminal. I admit, I did not look up the syntax in the manual, but I have in mind that semicolons can be used to separate statements that are on one line. voss@shania:~/ConTeXt lua zzz.lua lua: zzz.lua:1: unexpected symbol near ';' voss@shania:~/ConTeXt lua -v Lua 5.1.4 Copyright (C) 1994-2008 Lua.org, PUC-Rio Herbert ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Lua conditionals fail inside \starttexdefinition
On Tue, Sep 4, 2012 at 9:05 PM, Aditya Mahajan adit...@umich.edu wrote:
On Tue, 4 Sep 2012, Herbert Voss wrote:
Am 04.09.2012 20:44, schrieb Marco Patzer:
On 2012-09-04 Wolfgang Schuster wolfgang.schus...@gmail.com wrote:
Why does adding semicolon not work?
Do you have a example?
\starttext
\startluacode
if true then;
context(true)
else;
context(false)
end
\stopluacode
\stoptext
that is no Lua syntax
I thought that semicolons were optional in lua are equal to end of lines.
Aditya
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http://www.lua.org/manual/5.1/manual.html#2.4.4
The unit of execution of Lua is called a chunk. A chunk is simply a
sequence of statements, which are executed sequentially. Each statement can
be optionally followed by a semicolon:
:
:
2.4.4 - Control Structures
The control structures if, while, and repeat have the usual meaning and
familiar syntax:
stat ::= while exp do block end
stat ::= repeat block until exp
stat ::= if exp then block {elseif exp then block} [else block] end
(as conseguence
if exp then; block else; block end
is not valid
)
--
luigi
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Re: [NTG-context] Lua conditionals fail inside \starttexdefinition
Am 04.09.2012 21:22, schrieb luigi scarso:
http://www.lua.org/manual/5.1/manual.html#2.4.4
The unit of execution of Lua is called a chunk. A chunk is simply a
sequence of statements, which are executed sequentially. Each statement
can be optionally followed by a semicolon:
:
:
2.4.4 - Control Structures
The control structures if, while, and repeat have the usual meaning and
familiar syntax:
stat ::= while exp do block end
stat ::= repeat block until exp
stat ::= if exp then block {elseif exp then block} [else block] end
(as conseguence
if exp then; block else; block end
is not valid
)
yes, see also: http://www.lua.org/manual/5.1/manual.html#8
Herbert
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Re: [NTG-context] Lua conditionals fail inside \starttexdefinition
On 2012-09-04 Herbert Voss herbert.v...@fu-berlin.de wrote: voss@shania:~/ConTeXt lua zzz.lua lua: zzz.lua:1: unexpected symbol near ';' marco@homerow:/tmp$ lua t.lua true voss@shania:~/ConTeXt lua -v Lua 5.1.4 Copyright (C) 1994-2008 Lua.org, PUC-Rio marco@homerow:/tmp$ lua -v Lua 5.2.1 Copyright (C) 1994-2012 Lua.org, PUC-Rio Marco ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Lua conditionals fail inside \starttexdefinition
Am 04.09.2012 21:35, schrieb Marco Patzer: On 2012-09-04 Herbert Voss herbert.v...@fu-berlin.de wrote: voss@shania:~/ConTeXt lua zzz.lua lua: zzz.lua:1: unexpected symbol near ';' marco@homerow:/tmp$ lua t.lua true voss@shania:~/ConTeXt lua -v Lua 5.1.4 Copyright (C) 1994-2008 Lua.org, PUC-Rio marco@homerow:/tmp$ lua -v Lua 5.2.1 Copyright (C) 1994-2012 Lua.org, PUC-Rio the syntax changes, see http://www.lua.org/manual/5.2/manual.html#9 Herbert ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
Re: [NTG-context] Lua conditionals fail inside \starttexdefinition
On Tue, Sep 4, 2012 at 9:35 PM, Marco Patzer home...@lavabit.com wrote:
On 2012-09-04 Herbert Voss herbert.v...@fu-berlin.de wrote:
voss@shania:~/ConTeXt lua zzz.lua
lua: zzz.lua:1: unexpected symbol near ';'
marco@homerow:/tmp$ lua t.lua
true
voss@shania:~/ConTeXt lua -v
Lua 5.1.4 Copyright (C) 1994-2008 Lua.org, PUC-Rio
marco@homerow:/tmp$ lua -v
Lua 5.2.1 Copyright (C) 1994-2012 Lua.org, PUC-Rio
Because in Lua 5.2 there is the empty statements
http://www.lua.org/manual/5.2/manual.html#3
3.3.1 – Blocks
A block is a list of statements, which are executed sequentially:
block ::= {stat}
Lua has empty statements that allow you to separate statements with
semicolons, start a block with a semicolon or write two semicolons in
sequence:
stat ::= ‘;’
So
stat ::= if exp then block {elseif exp then block} [else block] end
means that
if exp then
;
else
;
end
is valid.
Luatex still uses lua 5.1.4
--
luigi
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Re: [NTG-context] Lua conditionals fail inside \starttexdefinition
On 2012-09-04 Herbert Voss herbert.v...@fu-berlin.de wrote: voss@shania:~/ConTeXt lua -v Lua 5.1.4 Copyright (C) 1994-2008 Lua.org, PUC-Rio marco@homerow:/tmp$ lua -v Lua 5.2.1 Copyright (C) 1994-2012 Lua.org, PUC-Rio the syntax changes, see http://www.lua.org/manual/5.2/manual.html#9 You're totally right. LuaTeX uses does not use lua 5.2 and therefore the semicolon syntax is wrong. I also get an “unexpected symbol” with lua5.1 Thanks for the clarification Marco ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://tex.aanhet.net archive : http://foundry.supelec.fr/projects/contextrev/ wiki : http://contextgarden.net ___
