August 2021 - ntg-context - NTG Mailing Lists

new upload
by Hans Hagen 24 Aug '21

24 Aug '21

On 8/24/2021 6:12 PM, Bruce Horrocks wrote: > Thanks. I'll wait for your upload and try again. i uploaded new bins just for fun (yesterday i needed a distraction) i also added some basic mechanism for repeatable random numbers (i can add more if needed) (the usual tex / lua / mp interfaces) \starttext % \enabletrackers[system.randomizer.details] % empty == default \newrepeatablerandom\MyRandom {Welcome 2 America} \newrepeatablerandom\MyRandomN{\randomnumber{0}{1000}} \newrepeatablerandom\MyRandomM{\randomnumber{0}{1000}} \cldcontext{utilities.randomizer.getrepeatableseed()}\par \cldcontext{utilities.randomizer.getrepeatableseed("default")}\par \cldcontext{utilities.randomizer.getrepeatableseed("MyRandom")}\par \cldcontext{utilities.randomizer.getrepeatableseed("MyRandomN")}\par \cldcontext{utilities.randomizer.getrepeatableseed("MyRandomM")}\par \dorecurse{10}{\MyRandom\par} \startlinecorrection \startMPcode randomseed := repeatablerandom("MyRandom") ; draw image ( for i=1 upto 1000 : draw origin randomized 100 ; endfor ; ) withpen pencircle scaled 1 withcolor white withstacking 2 ; fill boundingbox currentpicture withcolor darkred withstacking 1 ; \stopMPcode \stoplinecorrection \startluacode context(utilities.randomizer.getrepeatableseed("MyRandom")) context.par() local rep = utilities.randomizer.getrepeatable("MyRandom") for i=1,5 do context(rep()) context.par() end \stopluacode \stoptext ----------------------------------------------------------------- Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl -----------------------------------------------------------------

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Place a logo at the bottom of the page with a layer
by Fabrice Couvreur 24 Aug '21

24 Aug '21

Hi, I want to insert a logo at the bottom of the page on the right on the first page, on the left on the second, on the right on the third ... With the key repeat=yes, the logo is always at the bottom right Thanks Fabrice \useMPlibrary[dum] \definelayer [MyLogo] [x=0mm, y=0mm, width=\paperwidth, height=\paperheight, repeat=yes] \setupbackgrounds[page][background=MyLogo] \setlayer [MyLogo] [hoffset=\dimexpr\textwidth+\backspace+\rightmargindistance\relax, voffset=\dimexpr\topspace+\textheight+\footerheight\relax] {\externalfigure[dum][width=\rightmarginwidth,height=\headerheight]} \showframe \starttext \dorecurse{20}{\samplefile{lorem}} \stoptext

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Something broke between 2021.07.23 and 2021.08.19
by Bruce Horrocks 24 Aug '21

24 Aug '21

I re-processed a previous issue of a journal and found that it no longer compiled. It worked fine in versions up to and including 2021.07.23 but fails by version 2021.08.19 19:48. It may have failed a little earlier than this - I don't always refresh every release. The error in the console log is: [...] open source > level 2, order 9, name 'covers/inside-front-cover.tex' tex error > tex error on line 24 in file covers/inside-front-cover.tex: lua error: registered function call [396]: ...-64/tex/texmf-context/tex/context/base/mkxl/anch-pos.lmt:1286: attempt to call a nil value (upvalue 'texgetparstate') stack traceback: ...-64/tex/texmf-context/tex/context/base/mkxl/anch-pos.lmt:1286: in function <...-64/tex/texmf-context/tex/context/base/mkxl/anch-pos.lmt:1262> (...tail calls...) [...] Unfortunately I can't create an MWE any smaller than a project with about 3 sub-directories and half a dozen files. I don't really want to post it all here but happy to send a zip to Hans. (When it works it only creates a two page PDF so 'minimal' in that sense.) Secondly, something a bit specific to Macos also broke for the latest version. Previously I had: \definefont [RPN] [Menlo*bold at 12pt] but had to change that to \definefont [RPN][file:Menlo.ttc at 12pt] to get it compile. I thought it was something odd about Menlo (which is a Macos system font) at first which is why I changed to using the name: syntax but when this other problem came up I realised it too had worked previously. — Bruce Horrocks Hampshire, UK

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Re: [NTG-context] Curiosity about math.random in LuaTeX
by Thierry Horsin 23 Aug '21

23 Aug '21

Hi everybody. I wonder how does math.random() work in context. I found that this subject was discussed more than ten years ago by Otared and Taco and Thomas. It is clear to me how to obtain new results upon typesetting the same file by changing the value of math.randomseed (with os.time()). If you don't change the seed, you get the same result upon each typesetting, and a seed is given in the .tuc file. For example I have this: ["randomseed"]=0x1.0741c18b8a4ep-6 How do I use (and is it possible to) this value to have the same result of math.random() upon typesetting another file (with a different name) ? I could provide a same fixed seed in both files, but for some reasons I would like to re-use some previous results of math.random() for which no seed was initially given in another .tex file. Thank you Thierry

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Bug with mathalignment and columns
by Jack Hill 23 Aug '21

23 Aug '21

Hi, When a mathalignment is started at the end of a multi-column page ConTeXt places it at the start of the previous second column instead of placing it on a new page. Here's my code to test: \starttext \startcolumns[n=4] \startluacode lorum = "Lorum ipsum dolor sit amet. " for i = 1, 98, 1 do context(lorum) end \stopluacode \startformula \startmathalignment[n=1] \NC y = ax \NR \NC a^2 + b^2 = c^2 \NR \NC x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} \NR \stopmathalignment \stopformula \stopcolumns \stoptext Adding text after the formula seems to fix the issue, but that means I can't finish the page with a formula. It seems that it always places the formula at the top of the second column, regardless of how many columns there are. It also does this even if there are still empty columns (try changing 98 to 100 in the for loop). Jack

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lmtx update
by Benjamin Buchmuller 23 Aug '21

23 Aug '21

Hi, Here is another thing which worked previously for me: ConTeXt ver: 2021.07.30 00:57 LMTX fmt: 2021.8.8 int: english/english Now: ConTeXt ver: 2021.08.22 11:54 LMTX fmt: 2021.8.22 int: english/english Error: lua error: registered function call [396]: ...eXt/tex/texmf-context/tex/context/base/mkxl/anch-pos.lmt:1286: attempt to call a nil value (upvalue 'texgetparstate') stack traceback: ...eXt/tex/texmf-context/tex/context/base/mkxl/anch-pos.lmt:1286: in function <...eXt/tex/texmf-context/tex/context/base/mkxl/anch-pos.lmt:1262> (...tail calls...) 129 \NC \unit{0.88 angstrom} 130 \NC \unit{2.02 angstrom} 131 \NC \unit{2.03 angstrom} 132 \NC \unit{1.90 angstrom} 133 \NC \unit{4.99 angstrom} % rmsd #1/a:14-61 & backbone to #5/a:103-150 & backbone 134 \NC \unit{1.88 angstrom} 135 \NC \unit{5.20 angstrom} % rmsd #1/a:46-55 & backbone to #5/a:135-144 & backbone 136 \NC \NR 137 \HL 138 \stoptabulate The difficulty here is that when I copy the "faulty" part (my table) to another document (including all relevant defs etc.) it just works fine. So, I think it must have to do something with the placement of the float on the page. Any hints what has changed? Thanks! Benjamin > On Aug 20, 2021, at 12:00, ntg-context-request(a)ntg.nl wrote: > > lmtx update

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pgfplots module needs update from December
by Gavin 22 Aug '21

22 Aug '21

Hello list, The module pgfplots has a bug that produces an error for polar plots, and perhaps in other situations. tex error > tex error on line 20 in file ./chapter02-t-b-728d71c9823ff6bed735c6d6e1758718.tmp: Undefined control sequence <macro> \pgfplots@environment@polaraxis@ [#1]->\begin {axis}[#1,data cs=polar,axis type=polar] <line 3.20> ] This bug was described and fixed on the pgfplots GitHub repository in December (https://github.com/pgf-tikz/pgfplots/pull/382) I fixed the bug on my personal installation, but when I update the modules using the wiki instructions, the bug returns. In the LMTX installation, the file requiring the fix is: context-osx-64/tex/texmf-modules/generic/pgfplots/pgfplots.code.tex The fix is: Line 7928: change “\begin{axis}" to “\axis” Line 7934: change “\end{axis}" to “\endaxis” Is there anything I can do to aid in getting this fixed in the distribution? Thanks, Gavin

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Adjustment for header and footer
by Fabrice Couvreur 22 Aug '21

22 Aug '21

Hi, In the file below (not minimal, sorry!) I am using commands from Wolfgang in different threads. We can see that the top frame overflows into the text: how to correct this ? I would also like the top and bottom stroke to be adjusted to the width of the paper. Thanks Fabrice \useMPlibrary[dum] \setuplayout [topspace=1cm, backspace=3cm, cutspace=3cm, leftmargin=.75cm, leftmargindistance=.5cm, rightmargin=1.25cm, rightmargindistance=1cm, header=20mm, headerdistance=1cm, footer=20mm, footerdistance=1cm, width=middle, height=middle, location=middle] \setupbodyfont [newcomputermodern-book,11pt] \definefont [TextStyle] [SansBold*default sa 1.2] \defineframed [headerframed] [frame=off, height=fit, width=fit, ] \setupbackgrounds [header] [text] [frame=off,bottomframe=on,width=\widthpaper, framecolor=darkred,rulethickness=1pt] \setupbackgrounds [footer] [text] [frame=off,bottomframe=on,width=max, framecolor=darkred,rulethickness=1pt] \setupfootertexts [margin] [] [{\offset[y=\strutdp]{\externalfigure[dum][factor=max]}}] [] [{\offset[y=\strutdp]{\externalfigure[dum][factor=max]}}] \startsetups [headertext] \setupheadertexts [{ \startframed [headerframed] [foregroundstyle=TextStyle,align=middle] \getvariable{headertext}{location}\\ Spécialité mathématiques\\ \getvariable{headertext}{title} n\high{\tfxx \bf o}\,\getvariable{headertext}{number} \stopframed }] \setupheadertexts [{ \startframed [headerframed] [align=flushleft,foregroundstyle=\ssx] Lycée LA SALLE\\ Durée : \getvariable{headertext}{time}\\ \date[d=\getvariable{headertext}{day},m=\getvariable{headertext}{month},y=\getvariable{headertext}{year}] \stopframed }] [{ \startframed [headerframed] [align=flushright,foregroundstyle=\ssx] \externalfigure[dum] [factor=max] \stopframed }] \stopsetups \setvariable{headertext}{set}{\directsetup{headertext}} \setvariables [headertext] [title={Devoir maison}, number={2}, day={22}, month={08}, year={2021}, location={Terminale}, time={2 heures}] \starttext \samplefile{lorem} \stoptext

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Size of root symbol
by Bruce Horrocks 22 Aug '21

22 Aug '21

Is there a simple way to get both root signs in this MWE to be the same size? \starttext \startformula \sqrt[3]{4n} \ne \sqrt[3] {n} \stopformula \stoptext Thanks. — Bruce Horrocks Hampshire, UK

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Losing a character during line break at a hyphen
by Bruce Horrocks 22 Aug '21

22 Aug '21

Not sure whether this is a ligature problem or a hyphenation problem or both! In the following MWE, the line breaks at the hyphen following "Diffe", but one of the f's is lost so the PDF shows "Dife-". Latest LMTX, version 2021.08.19 19:48 \starttext Twenty years after receiving it as a Christmas present, I have finally got around to reading The Code Book by Simon Singh. Written in 1999, when E-commerce was still relatively new, the book provides accessible explanations of the workings of Diffe-Hellman-Merkle key exchange, and Rivest, Shamir and Adleman (RSA) public-key cryptography. \stoptext Output PDF attached. — Bruce Horrocks Hampshire, UK

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