March 2021 - ntg-context - NTG Mailing Lists

Add items to list with arbitrary page number
by denis.maier＠ub.unibe.ch 18 Mar '21

18 Mar '21

Hi, I need to add an item to a list with an arbitrary page number. (The reason is that I have a multivolume book, and I want to add information about the other books to the TOC) I know about this: \writetolist[section]{}{It's a test} But how can you add an arbitrary page number ? Best, Denis

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placenamedformula in placelist (MKII vs MKIV/LMTX)
by Adam Reviczky 17 Mar '21

17 Mar '21

Hi, I want to use placenamedformula to list a formula in the placelist with both the formula name and the formula number (alongside the pagenumber). The example in the wiki (https://wiki.contextgarden.net/Math/Display) and the test suite (cont-tst/doc/context/tests/mkiv/math/formulas-003.tex) shows what I would like to have. Using MKII I get the desired output (1 formulaname ... and 3b formulaname ...) but with MKIV and LMTX I only get the reference from the placeformula (as 1 and correctly not listed in the placelist) and none of the placenamedformula numbers. The placeformula number is then carried onto the second placenamedformula as 1 (resulting in formulaname ... and 1 formulaname ...). I have attached the test suite file output with both MKII and MKIV. Is there a way to get the MKII output with MKIV/LMTX somehow? Adam

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add more blank space when using \starteffect[hidden]
by Jeong Dal 17 Mar '21

17 Mar '21

Hi, Sometimes, I need to hide the solution of a problem. So I use \doifmode{} and \starteffect[hidden] as in the following sample file. Since I want to set more blank space if it is hidden, I add \blank[5cm] when it is in the \enablemode[hideSolution]. It works well except the figures and bars are not hidden. Only texts, even in the mp part, are hidden. It is OK for me. However, it would be much better to set the height of blank space depends on the height of hidden texts. Is there a way to set the variable height using “overlay” stuff instead of \blank[5cm]? Thank for reading. Best regards, Dalyoung \startbuffer[circles] draw fullcircle scaled 1cm; draw fullcircle scaled 1cm shifted (2cm,0); dotlabel.top(“O”,origin); \stopbuffer \def\StartHide{\doifmode{hideSolution}{\starteffect[hidden]}} \def\StopHide{\doifmode{hideSolution}{\stopeffect\blank[5cm]}} %\enablemode[hideSolution] \starttext \framed[]{This is what I want:} \framedtext[]{ \StartHide \samplefile{knuth} Overbar is not \overbar{hidden}. {\processMPbuffer[circles]} \StopHide } \stoptext

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Chemical reaction formulas
by David van Diepen 17 Mar '21

17 Mar '21

Dear list, According to the information on contextgarden (section chemistry) chemical reactions should be entered as follows: \usemodule[chemic] \startformula \chemical{CaCO_3(s),+,HCl(g),->,CaCl(HCO_3)(s)} \stopformula That produces a formula with the comma's in it, so that's not good. If I enter it as follows \usemodule[chemic] \startformula \chemical{CaCO_3(s) + HCl(g) \rightarrow CaCl(HCO_3)(s)} \stopformula Then somehow after the \rightarrow the math/chemical environment is lost and the remainder gets typeset as text. The same is true if I use any math command such as \beta or \cdot. The closest I get to the desired result is with the following: \usemodule[chemic] \startformula \chemical{CaCO_3(s) + HCl(g) --> CaCl(HCO_3)(s)} \stopformula But that is a bit of a compromise. Regards, David van Diepen

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footnote textseparator with interactions
by Mohammad Hossein Bateni 16 Mar '21

16 Mar '21

Hello, See this MWE: \setupinteraction[state=start]%,focus=standard] \setupnote[footnote][textseparator=\textcomma] \starttext Sample \footnote{First} \footnote{Second} \stoptext With textseparator, the color of the two footnotes change. Why is that? Thanks, Hossein

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\binom has fraction line
by Jacob Kauffmann 16 Mar '21

16 Mar '21

Dear list, lmtx draws a fraction line in \binom{n}{k}, ConTeXt ver: 2021.02.23 17:47 LMTX fmt: 2021.2.26 int: english/english The same happens with {n \choose k}. The other version I tested draws it correctly (without the bar): ConTeXt ver: 2019.03.21 21:39 MKII fmt: 2019.11.14 int: english/english Is this a bug, or has the user interface changed? Best, Jacob Kauffmann

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Bug in lmt_shade[...=...,...=...]
by Keith McKay 16 Mar '21

16 Mar '21

Hi All I think a bug has appeared quite recently in the command, lmt_shade. A MWE below followed by the error output. Best Wishes Keith McKay \setuppapersize[A4,landscape][A4,landscape] \starttext \startMPpage StartPage; width := PaperWidth ; height := PaperHeight ; unit := cm ; definecolor [ name = "MyColor1", r = 0.781, g = 0.5, b = 0.5 ] ; definecolor [ name = "MyColor3", r = 1, g = 1, b = 0.7983 ] ; draw lmt_shade [ path = unitsquare xscaled width yscaled height, direction = "up", alternative = "linear", colors = { "MyColor1", "MyColor3" }, ] ; StopPage; \stopMPpage \stoptext %%%Error Log%%% system > system > ConTeXt ver: 2021.03.13 11:22 LMTX fmt: 2021.3.16 int: english/english system > system > 'cont-new.mkxl' loaded <snip> metapost > initializing instance 'metafun:1' using format 'metafun' and method 'default' metapost > loading 'metafun' as 'metafun.mpxl' using method 'default' metapost > initializing number mode 'scaled' metafun > log > metafun > log > error: Not a cycle metafun > log > metapost > log > <to be read again> metapost > log > withprescript metapost > log > <argument> ...asparameter"vector":center_a:=point(getparameter"vector"1)of.mfun_shade_path;center_b:=point(getparameter"vector"2)of.mfun_shade_path;fi.fill.mfun_shade_path.withprescript metapost > log > "sh_domain="... metapost > log > image->begingroup.save.currentpicture;picture.currentpicture;currentpicture:=nullpicture;(TEXT3) metapost > log > ;currentpicture.if.str(SUFFIX2)<>"":shifted(mfun_labxf(SUFFIX2)*lrcorner.p+mfun_labyf(SUFFIX2)*ulcorn... metapost > log > lmt_do_shade->...ve="circular":draw.fullcircle.scaled(radius_a)shifted.center_a.dashed.evenly;draw.fullcircle.scaled(factor*radius_b)shifted-center_b.dashed.evenly;fi.fi.popparameters;) metapost > log > endgroup metapost > log > <scantokens> lmt_do_shade metapost > log > metapost > log > <*> ...3", r = 1, g = 1, b = 0.7983 ] ; draw lmt_shade [ path = unitsquare xscaled width yscaled height, direction = "up", alternative = "linear", colors = { "MyColor1", "MyColor3" }, ] metafun > log > metafun > log > That contour should have ended with '.. cycle' or '& cycle'. So I'll not change anything just now. metafun > log > metapost > log > ; StopPage; ; metapost > log >

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getnonfreefonts with LMTX
by Philipp A. 14 Mar '21

14 Mar '21

Hi! The LMTX distribution comes with few binaries, texlua being none of them. The getnonfreefonts <https://www.tug.org/fonts/getnonfreefonts/> script seems simple enough, but it relies on a global “kpse” which it uses to get kpse variables. Therefore luametatex --luaonly can’t execute it. Is there a way to get those fonts with the standalone LMTX distribution? Best, Phil

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missing "{ }" in metafun.
by Jeong Dal 14 Mar '21

14 Mar '21

Hi, Set notation “{}” is OK in TeX mode. But it is missing in the output of the metafun code. Here is an MWE. It is same in two different versions. ConTeXt ver: 2021.01.17 21:42 LMTX fmt: 2021.2.4 int: english/english ConTeXt ver: 2021.03.13 11:22 LMTX fmt: 2021.3.14 int: english/english \startbuffer[test] label(textext("$\{a,b\}$"),origin); \stopbuffer \starttext Let $A = \{a,b\}$. \processMPbuffer[test] \stoptext Thanks. Best regards, Dalyoung

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tlig feature sometimes does not work
by Mohammad Hossein Bateni 13 Mar '21

13 Mar '21

Hi, Since most fonts do not have the standard tex ligatures built in, I tend to add them when I load the fonts. Once in a while, I run into fonts where this does not work. See the attached tex/pdf files. I basically load the font as follows: \definefontfeature[tf][arabic][tlig=yes] \definedfont[dejavusansmono*tf] This works fine for DejaVuSansMono and for one Farsi font I use ( https://github.com/rastikerdar/vazir-font/blob/master/dist/Vazir-Regular.ttf) but not for this other Farsi font ( https://github.com/aminabedi68/Mikhak/blob/master/Font/ttf/Mikhak-Medium.ttf) Perhaps this is because the last font is not standard, but TrueType/OpenType standard is sometimes up for interpretation. I see two strange symptoms here: \showotfcomposition displays the tlig feature differently for the last font. It appears in the "extra" list, not in "basic". Why is that? What does this mean anyway? In the pdf, you see two unicode characters U+647 and U+654 following the numbers and dashes. This usually has a ligature turning the two characters into U+6C0. It happens for VazirRegular but not for Mikhak-Medium. Why is that? I have looked in the font: the ligature exists. I have seen that working in this demo page (https://aminabedi68.github.io/Mikhak/) though it may be hard to spot. Why is that? Is there something about the ordering of OpenType features which causes this behavior, or is there a bug in the font processing code? Best, MHB

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