- ntg-context - NTG Mailing Lists

sacling isue in lmt_followtext
by Pablo Rodriguez 05 Dec '20

05 Dec '20

Hi Hans, I have this sample: \starttext \startMPcode{doublefun} draw lmt_followtext [ text = " ·\input{zapf} ", path = ((12,0)--(32,15)--(50,0)--(45,26)--(64,42) --(40,42)--(32,65)--(24,42)--(0,42)--(0,42) ..(20,26)--(12,0)), autoscaleup = "max", reverse=true, ] xsized TextWidth ; \stopMPcode \stoptext Text doesn’t scale properly (I would say starting with latest from 2020.12.03 19:02). It gets worse with \dorecurse{2}. With current latest (2020.12.04 20:22), each glyph seems to have a different scaling. I even wonder whether all glpyhs are embedded (using \setupbodyfont[dejavu] and \input{aristotle-grc}). But this may be my impression, since random scaling in each glyph might be distorting the glyphs With latest from 2020.12.01 17:52, I get perfect scaling in lmt_followtext. Am I missing something or have I hit a bug? Many thanks for your help, Pablo -- http://www.ousia.tk

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Getting the filename which is being typeset
by Otared Kavian 05 Dec '20

05 Dec '20

Hi everyone, I have to typeset a few files which get each an input file named in a certain way. For instance, a file named « myfile.tex » in which another file named « myfile-buffer.tex » is used as an \input file, as in % content of myfile.tex %%%%% \starttext This is a test. \input myfile-buffer.tex \stoptext %%%%% When typesetting « myfile.tex » I wonder whether it is possible to get the name of the file without its suffix, that is to get « myfile », with a command such as \getNameOfCurrentFile and then be able to replace the above snippet by: % desired content of myfile.tex %%%%% \starttext This is a test. \input \getNameOfCurrentFile-buffer.tex \stoptext %%%%% Best regards and thanks for any hint: Otared K.

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repeated chapter in LMTX Reference Manual?
by Pablo Rodriguez 04 Dec '20

04 Dec '20

Hi Hans, many thanks for your new upload that fixes the issue with scaled external figures. I have just accidentally realized: \startbodymatter \component luametatex-preamble \component luametatex-differences [...] \stopbodymatter \startbackmatter [...] \component luametatex-differences \component luametatex-statistics \stopbackmatter I mean, “Differences with LuaTeX” is the second chapter and the second appendix (sort of) in the “LuaMetaTEX Reference Manual”. I wonder whether this is intended. Just in case it might help, Pablo -- http://www.ousia.tk

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\XeTeX\ misbehaving
by Pablo Rodriguez 04 Dec '20

04 Dec '20

Hans, just accidentally, I discovered that \XeTeX\ misbehaves: \starttext \input{zapf} \XETEX\ \input{knuth} \stoptext BTW, this is the MWE after I saw http://www.pragma-ade.com/general/manuals/luametatex.pdf#page=15. I hope it helps, Pablo -- http://www.ousia.tk

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LMTX ignores figure size
by Henning Hraban Ramm 04 Dec '20

04 Dec '20

Hi, with latest LMTX, the size (width) of external figures is ignored in floats, while it works outside of floats and with MkIV. It also works with metapost figures (e.g. dum library). \setupexternalfigure[location=default] \starttext \startplacefigure[location=here] \externalfigure[cow][width=2cm] \stopplacefigure \stoptext Hraban

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Is anyone having issues with magazines in LMTX?
by Jairo A. del Rio 04 Dec '20

04 Dec '20

Hi, list! When I want to compile magazines from source (such as mag-1102,mkiv), LMTX gives weird output (grayish background and misaligned titles). Compilation with MkIV gives normal results. My ConTeXt version is 2020.12.03 19:02. Thank you in advance. Cordially, Jairo :)

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Re: [NTG-context] basic issues with formulas
by Andres Conrado Montoya 03 Dec '20

03 Dec '20

Hi pablo, regaring 1) TeX assumes that each character is a variable on math mode. You need to tell it that each "word" is, well, a "word": \starttext \startitemize[packed] \item Valor actual neto: $\text{\em beneficios} - \text{\em costes}$. % you can use typographical variations inside \text: \em, \bf, etc \item Beneficio por euro: $\frac{\text{\em beneficios}}{\text{\em costes}}$. \item Beneficio obtenido el primer año. \stopitemize \stoptext 2) will solve itself ather this. 3, I don't know. -- Andrés Conrado Montoya Andi Kú andresconrado(a)gmail.com http://sesentaycuatro.com http://messier87.com http://chiquitico.org ---------------------------------------- Los fines no justifican los medios, porque la medida verdadera de nuestro carácter está dada por los medios que estamos dispuestos a utilizar, no por los fines que proclamamos. ---------------------------------------- “You develop an instant global consciousness, a people orientation, an intense dissatisfaction with the state of the world, and a compulsion to do something about it. From out there on the moon, international politics look so petty. You want to grab a politician by the scruff of the neck and drag him a quarter of a million miles out and say, ‘Look at that, you son of a bitch.’” — Apollo 14 astronaut Edgar Mitchell

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basic issues with formulas
by Pablo Rodriguez 03 Dec '20

03 Dec '20

Dear list, math is all Greek to me and I’m experiencing issues when typesetting the most basic inline formulas. \starttext \startitemize[packed] \item Valor actual neto: $beneficios - costes$. \item Beneficio por euro: $\frac{beneficios}{costes}$. \item Beneficio obtenido el primer año. \stopitemize \startitemize[packed] \item Valor actual neto: $beneficios - costes$. \item Beneficio por euro: $beneficios - costes$. \item Beneficio obtenido el primer año. \stopitemize \startitemize[packed, columns, two] \item Valor actual neto: $beneficios - costes$. \item Beneficio por euro: $\frac{beneficios}{costes}$. \item Beneficio obtenido el primer año. \stopitemize \startitemize[packed, columns, two] \item Valor actual neto: $beneficios - costes$. \item Beneficio por euro: $beneficios - costes$. \item Beneficio obtenido el primer año. \stopitemize \stoptext The issues I’m experiencing are: 1. Kernings around ligatures (fi) are wrong. 2. Is there a way to enable ligatures? 3. Packed works fine with fractions, but packed columns is wrong with them. It adds too much space. Again, formulas are totally foreign to my work with ConTeXt. I don’t know whether they are bugs in latest (2020.01.30 14:13) or there is a way to avoid the issues. Many thanks for your help, Pablo -- http://www.ousia.tk

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Bug (?) using \externalfigure with layers and backgrounds
by Jairo A. del Rio 03 Dec '20

03 Dec '20

Hi everyone. The following \setuppagenumbering[state=stop] \definelayer[mybg] [ repeat=yes, x=0mm, y=0mm, width=\paperwidth, height=\paperheight, ] \setlayer[mybg]{\externalfigure[cow][width=\paperwidth,height=\paperheight]} \setupbackgrounds[page][background=mybg,state=repeat] \setupindenting[yes,small] \startsetups background:default \setupbackgrounds[page][background=mybg,state=repeat] \stopsetups \startsetups background:void \setupbackgrounds[page][background=] \stopsetups \starttext \dorecurse{7}{\input knuth} \page \setups[background:void] \dorecurse{8}{\input tufte} \page \setups[background:default] \dorecurse{7}{\input knuth} \page \stoptext works with a local image (say, if "cow" is in the same folder as the main file), but it doesn't find sample images (cow, hacker, etc.). Is that a bug or an intended result? Thank you in advance. Best regards, Jairo

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Using ConTeXt-LMTX for modern Mathematically-Literate-Programming 1/2
by Stephen Gaito 03 Dec '20

03 Dec '20

Hello, I am slowly working on a Mathematical problem requiring underlying computation. As Mathematicians (myself included) are rather "conservative", I need to discuss each "chunk" of code with the full set of Mathematical notation. A couple of years ago I started using ConTeXt-MKIV as a Mathematically-Literate-Programming tool by using its excellent Lua interface to capture the code and dump it to disk for external compilation. I am now revisiting my original design and want to redo my tools using ConTeXt-LMTX. I would *like* to be able to "stop" the ConTeXt typesetting at various points for differing purposes: 1. After all macro expansions (and hence after *my* calls into Lua) but before line/paragraph/page layout begins. 2. After line/paragraph/page layout but before PDF generation. 3. After all PDF generated (ie. a "normal" "full" ConTeXt run). Stopping after all macro expansions would allow my code generation builds to proceed without the un-needed page setting or PDF generation. Stopping after the line/paragraph/page layout would allow multiple "faster(?)" ConTeXt runs while the "*.tuc" file converges to a complete set of page numbers and cross references (etc). Then, once the "*.tuc" file has converged, a full ConTeXt run with PDF output could be done. I am very aware that *internally* ConTeXt is probably structured as a tight pipeline with each of the "traditional" TeX stages "Mouth", "Stomach", "page setting", PDF generation.... tightly "chained"... This means that there is no "one" place in the code where all macro expansions have completed but before the page setting "starts", or similarly, after the page setting has finished but before the PDF generation "starts". ---- QUESTION: Is it possible to use the new LuaMetaTeX callbacks (found in chapter 10 of the "LuaMetaTEX Reference Manual") to "suppress" any further computation at various points in the ConTeXt pipeline? ---- For example, could I use one of the "*_linebreak_filter"s (or the "append_to_vlist_filter") to "return" an empty value and hence reduce further computation downstream in the pipeline? Could I use the "pre_output_filter" to "return" an empty value and hence "stop" PDF generation? (I realize that these callbacks *are* a currently fast moving target. I am happy to follow their changes, equally I would be testing their usefulness and/or impact) ---- ALTERNATIVE QUESTION: Would it be possible to provide official ConTeXt-LMTX "modes" which suppress further computation at these points? ---- This alternative, while some more work for the writing of ConTeXt-LMTX, would ensure less direct external dependence on the LuaMetaTeX callbacks, but would almost certainly be welcomed by the ConTeXt community. ---- QUESTION: Are the "stages" I have identified major, computationally expensive, "steps" in the overall ConTeXt "computation"? ---- Many thanks for an excellent tool! Regards, Stephen Gaito

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