January 2022 - ntg-context - NTG Mailing Lists

Fuzzy lines
by Henning Hraban Ramm 21 Jan '22

21 Jan '22

Hi MetaFans, is it possible to get lines with Metapost that look like they were drawn with a pencil or brush? Some vector graphics apps (in my case: Affinity Designer) can use such naturally looking brushes for vector graphics (and I don’t know how they do it), but I’d like to automate/parametrize some designs, and that would finally be a reason to learn Metapost... Hraban

6 20

Reset environment between MetaPost graphics?
by Vincent Hennebert 21 Jan '22

21 Jan '22

Hi, Say I’m writing a document containing many independent MetaPost figures. I don’t want to bother with enclosing each and every graphics in a ‘begingroup...endgroup’ with the appropriate ‘save’ statement. But I don’t want variables from previous graphics to leak into following ones either. Like this: % SOF \starttext Text about some topic. \startMPcode u=1cm; draw (-u, u)--origin--(u ,u); \stopMPcode Now on to another topic. \startMPcode u=2cm; % Triggers an error: Inconsistent equation (off by 28.34645) draw (-u, u)..origin..(u ,u); \stopMPcode \stoptext % EOF Is that achievable? Thanks, Vincent

3 5

placelist created by defineenumeration fails in numbered headings
by Youssef Cherem 20 Jan '22

20 Jan '22

That pretty much sums it up: if I change \title to \chapter, for example, the list is generated only if I set the option criterium=chapter, for example. Is criterium really necessary in this case? ``` \defineenumeration [Exercício] [alternative=top, before=\blank, after=\blank, between=\blank] \defineenumeration [Título] [alternative=left, headcolor=darkcyan, width=2cm, text={Título}, before=\blank, after=\blank, between=\blank] \setuplabeltext[Exercise=Exercício~,Título=Título~] \setuplist[Exercício][width=6em] \starttext \title{defineenumeration} \subject{Lista de exercícios} \placelist[Exercício][label=Exercise] \subject{Lista de títulos} \placelist[Título][label=Título] \Exercício[title=Título do exercício] Um exercício O mesmo exercício. \Exercício Outro exercício com {\tt start ... stop} \subExercício Um subexercício. \startExercício Um exercício. \stopExercício \startsubExercício Um subexercício. \stopsubExercício \Título Título 1 \Título Título 2 \subTítulo sub-Título 1 \subTítulo sub-Título 2 \startTítulo Agora vai. \stopTítulo \stoptext ```

1 0

Counter names
by Joaquín Ataz López 20 Jan '22

20 Jan '22

Good morning to all. I would like to ask where I can find information about the name of the different counters that are handled in ConTeXt, in order to manipulate them manually. I guess the number of internal ConTeXt counters will be tremendous. But I would like to know what the "most common" counters are called, for example the ones that control the different structural units (chapter, section...) or the elements of a structured list, etc. I have tried to apply \incrementcounter or \decrementcounter to some counters that also exist in TeX as, for example, chapter, section... but I don't get any result. Thanks in advance for your answers Joaquín

2 1

Custom Table of Contents
by andrei＠borisov.dev 20 Jan '22

20 Jan '22

Hi! I’m new to ConTeXt. I need to make a custom table of contents that looks like this: https://imgur.com/a/Ca3By6X Each row in the table corresponds to an item that has following data to print in the table of contents: page, total number of pages which the item spans, name of the item and a custom text metadata field which is defined by the item. Each item will have its own regular table of content and own structure. So we can think of this TOC as kind of a mega table of content one level above. It needs to be fully automatic. The actual table is going to be an xtable (which I was blown away by after using LaTeX godawful tables for years, it’s soo good). After digging into the documentation (again, wow, it’s soo detailed and approachable after LaTeX😂), I found out that \completecontent doesn't provide such extreme level of customization. Therefore I need reimplement at least some parts of the default content forming mechanism. After digging in the source a bit, I found something relevant: https://source.contextgarden.net/tex/context/base/mkxl/strc-lst.mklx <https://source.contextgarden.net/tex/context/base/mkxl/strc-lst.mklx>. What I need is some guidance on what would be the best course of action, in particular, which API should I use and roughly how should I approach it🙏 Should I create my own counters for each item and somehow reference those manually in the TOC? How would I save additional text metadata field and the item name to show it in the TOC? The source code mentions a concept of list renderers. This sounds like the correct API to plug in, but it’s hard for me to grasp how exactly it works. Any help will be appreciated! Thank you in advance! Stay safe, Andrei Borisov.

2 1

new upload
by Hans Hagen 19 Jan '22

19 Jan '22

Hi, I uploaded a new version but best first read this because some is experimental and i need to sycn with those involved, so thereofre the uplaod (too many files involved): Indic: - We added indic language patterns ad well as defined the languages but labels are on the todo as are conversions; kauśika is working on this - We also added a tweak to deal with a certain class of indic fonts; there will be a more detailed report about the why and how by kauśika - So, Indic should work as before but with more dedicated support coming. Math: - Mikael and I are stepwise going over the math machinery: constructs, spacing etc in the perspective of what luametatex provided. - We think we can improve spacing (more consistent) but it needs some work and testing. Some gets shifted from engine heuristics to predictable control. - There will be a 'traditional swedish' spacing variant, also as an exaple of how users can finetune and adapt to the math culture they like. (I will likely make one for educational purpose). - All this is done by some fundamental extensions to the math engine (on top of all the already present configurability) but hopefully without side effects. Rest: - I added a few features discussed on the list (itemize and such) which I let others explain (omn the wiki). 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 -----------------------------------------------------------------

6 12

How to create an index that refers to multiple other books?
by Joel 19 Jan '22

19 Jan '22

I am writing a secondary textbook to be used in public schools. In my state, the textbooks must adhere to standards, such as the Common Core State Standards (CCSS). It is typical for a textbook to contain an index for teachers to check where in the textbook which standards are used. I've used the following code to create such an index, if I simply place `\learned{}` somewhere containing the standard's ID, it creates a custom index entry, and `\placelearned` displays that index. \defineregister[learned][compress=yes] \setupregister[learned][style=sansbold, textstyle=slanted, n=1, pagenumber=yes] \starttext \learned{CCSS+W.7.3} \input knuth \learned{CCSS+W.7.3} \input knuth \learned{CCSS+W.7.1} \startchapter[title=Standards] \placelearned \stopchapter \stoptext This prints an index like this: Standards c CSS W.7.1 1 W.7.3 1 My problem is my textbook also includes four separate workbooks. I need the index to show my publisher that I've covered all 300+ standards, so I need the index at the back of the textbook to also contain details of which pages in each workbook the standards are found. How can I combine the index so it refers to all books? Something like this: Standards c CSS W.7.1 T 1, Wk.1 3-8, 12, Wk.2 8-9, 60-61 W.7.3 T 1, Wk.1 3-8, 12, Wk.2 8-9, 60-61, Wk.3 1-2, 54, 70, 90, Wk.4 99, 102, 104 ...or possibly like this... Standards c CSS W.7.1 Textbook: 1 Workbook 1: 3-8, 12 Workbook 2: 8-9, 60-61 W.7.3 Textbook: 1 Workbook 1: 3-8, 12 Workbook 2: 8-9, 60-61 Workbook 3: 1-2, 54, 70, 90 Workbook 4: 99, 102, 104 Is there any way to print an index that covers pages across multiple books? --Joel

3 4

Defining new float types fails in LMTX
by Marco Patzer 18 Jan '22

18 Jan '22

Hi! Apologies for spamming this list with my all the floaty stuff. There's an issue with defining new floats in LMTX in combination with bottom placement. The following works in MkIV, but throws an error in LMTX: I'm ignoring this; it doesn't match any \if. mtx-context | fatal error: return code: 256 \setupfloat [figure] [default=bottom] %% fails %% [default=top] %% works \definefloat [foo] [foos] [figure] \starttext \startplacefigure [title=Foo] \framed{Foo} \stopplacefigure \startplacefoo [title=Bar] \framed{Bar} \stopplacefoo \stoptext Marco LMTX 2021.11.26 11:38

2 6

definemathcommand and Lucida OT
by Otared Kavian 18 Jan '22

18 Jan '22

Hi Hans, Some time ago I reported about an issue with \definemathcommand, and the issue is still present, as one can see with following example. Best regards: Otared % begin liminf-Argmin.tex \setupbodyfont[lucidaot] %\setupbodyfont[termes] \definemathcommand [Argmin] [limop] {\mfunctionlabeltext{ArgMin}} \definemathcommand [liminfbar] [limop] {\underline{\mfunctionlabeltext{lim}}} \definemathcommand [limsupbar] [limop] {\overline{\mfunctionlabeltext{lim}}} \starttext The built-in commands \type{\liminf}, yielding $\liminf$, and \type{\limsup}, yielding $\limsup$ do not work properly with LucidaOT: \startformula x_{n} := (-1)^n, \quad\mbox{then} \quad \liminf_{n \geq 0}x_{n} = -1, \quad \limsup_{n\geq 0} x_{n}= +1. \stopformula The user defined commands \type{\liminfbar} and \type{\limsupbar} behave correctly: \startformula x_{n} := (-1)^n, \quad\mbox{then} \quad \liminfbar_{n \geq 0}x_{n} = -1, \quad \limsupbar_{n\geq 0}x_{n} = +1, \stopformula but not the command \type{\Argmin} \startformula \Argmin_{x\in {\Bbb R}} (x^2 - x + 1) = {1 \over 2}. \stopformula \stoptext % end liminf-Argmin.tex

1 0

new uplaod
by Hans Hagen 18 Jan '22

18 Jan '22

Hi, a new lmtx upload - crash with bottom floats probably solved: had to do with tricky interaction between engine insert handling and callback interference (as well as some assumptions in the engine dating that relate to the fact that tex was never written to be opened up this way) - crash due to math initialization: this related to a new mechanism wrt math parameters that Mikael and I are playing with .. think of this: \newmuskip \mymuskipA \mugluespecdef\mymuskipB 0mu \inherited\Umathfracfracspacing\textstyle\mymuskipA \inherited\Umathradradspacing \textstyle\mymuskipB \startTEXpage[offset=3bp] \mymuskipA 10mu \mugluespecdef\mymuskipB 10mu $\mathfrac{x}\mathfrac{x}$\par $\mathrad {x}\mathrad {x}$\par \mymuskipA 20mu \mugluespecdef\mymuskipB 20mu $\mathfrac{x}\mathfrac{x}$\par $\mathrad {x}\mathrad {x}$\par \mymuskipA 30mu \mugluespecdef\mymuskipB 30mu $\mathfrac{x}\mathfrac{x}$\par $\mathrad {x}\mathrad {x}$\par \mymuskipA 30mu plus 10mu minus 10mu \mugluespecdef\mymuskipB 30mu plus 10mu minus 10mu $\mathfrac{x}\mathfrac{x}$\par $\mathrad {x}\mathrad {x}$\par \stopTEXpage tex has a few abstractions (thinmuskip etc) than basically postpone a setting so that they can be adapted by setting these 'special - internal in luametatex speak - mu glue registers' but is is being generalized so that we can group math (integer, dimension, glue) parameters by binding them to registers and constants ... that way we can do simple and efficient switches to different spacing ... just that you know 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 -----------------------------------------------------------------

1 0