June 2021 - ntg-context - NTG Mailing Lists

issue with link (MkIV & LMTX)
by Pablo Rodriguez 05 Jun '21

05 Jun '21

Dear list, I have the following sample: \setuppapersize[A10] \setupinteraction[state=start] \enabledirectives[references.border] \unexpanded\def\MyURL#1% {\bgroup\goto{{\tt\hyphenatedurl{#1}}}[url(#1)]\egroup} \starttext \startTEXpage[offset=1ex] \startitemize \item \MyURL{a.b\\/c.d\letterhash e} \stopitemize \stopTEXpage \stoptext I’m using current latest from 2021.06.04 17:28. LuaTeX generates the link rectangle right. LuaMetaTeX generates a wrong link rectangle. In the attached image, you can see the output I get (MkIV and LMTX). Could anyone confirm the issue? Many thanks for your help, Pablo -- http://www.ousia.tk

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quotes potruding out in the left margin
by Sandra Snan 05 Jun '21

05 Jun '21

Hi♥ How do I get the quotes to potrude out in the left margin? For example in the following text, I want the "y" in "you are so" to be aligned with the "oh" in "oh hi there" and the "here" in "here here". \definefontfeature [default] [default] [protrusion=quality,expansion=quality] \setupalign[hz,hanging] \starttext oh hi there "you are so" here here \stoptext Also in the real text I'll also be using \definefontfamily [praise][serif][junicode] but, the above min via behavior I couldn't get to work at live.contextgarden

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yscale not working
by Hans van der Meer 05 Jun '21

05 Jun '21

Why is there no effect of the yscale parameter in \externalfigure when the width-parameter is given? In the MWE it is the intention to stretch the height of the figure by a factor of two. But nothing happens. Leaving out the width does stretch the height, but then it becomes too wide. \starttext Test \tex{externalfigure} scaling - \ConTeXt\ \contextversion \blank \type{\externalfigure[test][width=0.50\textwidth]}\crlf \externalfigure[test][width=0.50\textwidth] \blank \type{\externalfigure[test][width=0.50\textwidth,yscale=2000]}\crlf \externalfigure[test][width=0.50\textwidth,yscale=2000] \stoptext dr. Hans van der Meer

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Struggling with SQL!
by Gerard Verhaag 05 Jun '21

05 Jun '21

Hi, I'm trying to get MySQL data access working but can't solve the issues I'm encountering. Part of my code looks like: \startluacode productsheet = productsheet or {} function productsheet.sqldatabase(database,user,password) productsheet:sql(database,user,password) end function productsheet:sql(db,us,pw) print("SQLDATABASE: database: " .. db) print("SQLDATABASE: username: " .. us) print("SQLDATABASE: password: " .. pw) local sql = require("util-sql") local presets = {database = db,username = us,password = pw,host= "localhost",port= 3306} local template = [[SELECT `nom`, `name_alias` FROM `llx_societe` WHERE `nom` = '%nom%' ;]] presets.id = "mysql" local data, keys = utilities.sql.execute {presets=presets,template=template,variables={nom = "Life"}} ... This generates the following issues: sql > start loading method 'library' lua error > lua error on line 153 in file /home/gverhaag/Stock/ProductSheet/productsheet_KG594.tex: /usr/share/texmf/tex/context/base/mkiv/l-sandbox.lua:180: module 'luasql.mysql' not found: no field package.preload['luasql.mysql'] no file '/usr/local/share/lua/5.2/luasql/mysql.lua' no file '/usr/local/share/lua/5.2/luasql/mysql/init.lua' no file '/usr/local/lib/lua/5.2/luasql/mysql.lua' no file '/usr/local/lib/lua/5.2/luasql/mysql/init.lua' no file './luasql/mysql.lua' no file '/usr/local/lib/lua/5.2/luasql/mysql.so' no file '/usr/local/lib/lua/5.2/loadall.so' no file './luasql/mysql.so' no file '/usr/local/lib/lua/5.2/luasql.so' no file '/usr/local/lib/lua/5.2/loadall.so' no file './luasql.so' stack traceback: [C]: in function 'requiem' /usr/share/texmf/tex/context/base/mkiv/l-sandbox.lua:180: in function </usr/share/texmf/tex/context/base/mkiv/l-sandbox.lua:165> (...tail calls...) ...are/texmf/tex/context/base/mkiv/util-sql-imp-library.lua:74: in main chunk [C]: in function 'requiem' /usr/share/texmf/tex/context/base/mkiv/l-sandbox.lua:180: in function </usr/share/texmf/tex/context/base/mkiv/l-sandbox.lua:165> (...tail calls...) /usr/share/texmf/tex/context/base/mkiv/util-sql.lua:114: in function '__index' /usr/share/texmf/tex/context/base/mkiv/util-sql.lua:288: in function 'execute' [ctxlua]:21: in function 'sql' [ctxlua]:5: in function 'sqldatabase' [ctxlua]:1: in main chunk Must be something basic, I guess! I use the TexLive 2017 version of ConTeXt. Any idea what I'm doing wrong here?

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different prefixsegments for \in
by Pablo Rodriguez 04 Jun '21

04 Jun '21

Dear list, I have the following sample: \setupreferencestructureprefix [default] [prefixsegments=*:*] \starttext \section{One Section} \subsection[sec0]{Subsection} As told in \in[sec0] and \in[sec1]… \section{Another Section} \subsection[sec1]{Subsection} … \stoptext The output reads: As told in 1.1 and 2.1… I would like to be able to supress the section number in the reference, if the current section is the same as the referenced one. I mean, I would like that the output reads: As told in 1 and 2.1… Which would be the way to do it automatically? BTW, in my real--world document, I need to remove part and chapter numbers from the reference when in the same part and chapter (when compiling XML sources). Many thanks for your help, Pablo -- http://www.ousia.tk

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new upload
by Hans Hagen 04 Jun '21

04 Jun '21

Hi, I uploaded a new version of lmtx: a next step in this matrix and such graphic part ... (also bTABLE done). The matrix bit has a high level MP interface, also because it's a nice example of implementing one (not much code needed actually). Support in bTABLE .. eTABLE is kind of interesting as it separates the ornamental part from the text part. The sxample only shows some simple stuff. I'll probably also add this to the other table mechanisms. (Not hard but I don't want to impact performance when it's not used.) The \startoverlayMPgraphic{mp:whatever-6} is new and automatically defines the overlay so that saves some code. \startMPoverlaydata is just a collector that can be flushed in-line (which wilkl also reset it). All this is probably mostly useful in an educational setting. We'll see. Hans ------------------------------------------------------------ examples ------------------------------------------------------------ \starttext \startoverlayMPgraphic{mp:whatever-6} fill OverlayBox withcolor "darkgray" ; draw matrixbox (1, 1) (2, 1) enlarged OverlayOffset shifted paired(OverlayOffset) withpen pencircle scaled 1pt withcolor "blue" ; draw matrixbox (2, 2) (4, 4) enlarged OverlayOffset shifted paired(OverlayOffset) withpen pencircle scaled 1pt withcolor "red" ; \stopoverlayMPgraphic \framed [synchronize=background, align=normal, frame=off, background=mp:whatever-6, backgroundoffset=.5ex, foregroundcolor=white] {\setmathmatrixanchoring[yes]% left|right|both|yes \startmathmatrix \NC a_1 \NC a \NC b \NC c\NR \NC a_2 \NC a \NC b \NC c\NR \NC a_3 \NC a^2 \NC b \NC c\NR \NC a_4 \NC a \NC b_2 \NC c\NR \NC a_5 \NC a \NC b \NC c\NR \NC a_6 \NC a \NC b \NC c\NR \stopmathmatrix} % \blank % This can also be done by Alans node module. \startoverlayMPgraphic{mp:whatever-7} fill OverlayBox withcolor "darkgray" ; draw lmt_matrix [ from = (1, 1), to = (5, 4), connect = { "bottom", "left" }, color = "blue", linewidth = 1pt, arrowoffset = 2pt, label = [ text = "$\white \scriptscriptstyle x =1$", offset = ExHeight/2, anchor = "lft", fraction = .25 ], ] ; draw lmt_matrix [ from = (4, 1), to = (1, 5), connect = { "bottom", "right" } colors = { "green", "magenta" }, arrowcolor = "white", linewidth = 1pt, ] ; draw lmt_matrix [ cell = (2, 2), shape = "circle" color = "red", linewidth = 1pt, ] ; draw lmt_matrix [ cell = (4, 6), shape = "round", radius = ExHeight/2, color = "red", linewidth = 1pt, ] ; draw lmt_matrix [ cell = (2, 6), shape = "path", path = fulldiamond xscaled 3EmWidth yscaled 4ExHeight, color = "red", linewidth = 1pt, ] ; draw lmt_matrix [ cell = (2, 6), shape = "scaledpath", offset = .5ExHeight, path = fulldiamond, color = "yellow", linewidth = 1pt, ] ; \stopoverlayMPgraphic \blank \framed [synchronize=background, align=normal, frame=off, offset=overlay, background=mp:whatever-7, foregroundcolor=white] {\setmathmatrixanchoring[both]% \startmathmatrix \NC a \NC \NC \quad \NC b \NC \NR \NC \NC c \NC \quad \NC \NC \NR \NC \NC \NC \quad \NC \NC \NR \NC \NC \NC \quad \NC \NC d \NR \NC e \NC \NC \quad \NC \NC \NR \NC \NC f \NC \quad \NC g \NC \NR \stopmathmatrix} \blank \startoverlayMPgraphic{whatever-9} fill anchorspan (1, 1) (1, 3) withcolor "blue" ; fill anchorspan (2, 1) (3, 3) withcolor "yellow" ; fill anchorspan (3, 1) (3, 3) withcolor "green" ; path p ; p := anchorcell (2, 2) ; fill p withcolor "red" ; % now some weird stuff: picture q ; q := externalfigure "t:/sources/cow.pdf" ; q := q xysized (bbwidth(p), bbheight(p)) ; draw q shifted - center q shifted center p ; % and some even weirder stuff: \includeMPoverlaydata \stopoverlayMPgraphic \enabletrackers[localanchor] \bTABLE[frame=off,synchronize=background,background=whatever-9] \bTR \bTD[foregroundcolor=white] \startMPoverlaydata fill anchorcell (\xanchor,\yanchor) enlarged -.25ExHeight withcolor "darkgray" ; \stopMPoverlaydata test \eTD \bTD test test \eTD \bTD test test test \eTD \eTD \bTR \bTD[foregroundcolor=white] test test \eTD \bTD[nx=2,align=middle,foregroundstyle=bold,foregroundcolor=white] test \eTD \eTD \bTR \bTD[foregroundcolor=white] test test test \eTD \bTD test test \eTD \bTD test \eTD \eTD \eTABLE \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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metafun transformation error
by Ajith R 04 Jun '21

04 Jun '21

Hi all, I am new to context and need help in solving an error. I am trying to print some numbers in a grid onto a transparent sheet as mirror images so that the numbers are correctly displayed when I view it from the non printed side. The numbers have a particular sequence which cannot be obtained from calculations. So, they are stored in an array of strings : l[0][0] := "38"; ... I place them at the centre of the grid squares using the code below: for i= 0 upto (row - 1): for j= 0 upto (col - 1): middle := 0.5[((( i * unit) + lm), ((j * unit) + bm)), ((((i+1) * unit) + lm), (((j +1) * unit) + bm))]; p := thelabel(l[j][i], middle); draw p; % q := p reflectedabout (0.5[urcorner p, ulcorner p], 0.5[lrcorner p, llcorner p]); % draw q; endfor endfor This works as expected. But, when I try to reflect the label by means of the commented code, I get an error : tex error > mp error on line 643 in file /home/ajith/Desktop/PlayGround/numgrid.tex: >> (xpart T_,ypart T_,-0.00581xpart T_+0.00497ypart T_+0.15294,-0.00497xpart T_ -0.00581ypart T_+0.98824,-0.00497xpart T_-0.00581ypart T_+0.98825,0.00581xpart T_-0.00497ypart T_-0.15294) ! Transform components aren't all known. <to be read again> ; <for(0)> ...lcorner.p];q:=p.reflectedabout(uq,lq); draw.p; ENDFOR <for(0)> ...=p.reflectedabout(uq,lq);draw.p;endfor ENDFOR <*> ...lectedabout (uq, lq); draw p; endfor endfor StopPage ; ; I'm unable to apply a partially specified transformation except to a fully known pair or transform. Proceed, and I'll omit the transformation. I tried a mock example without the loops and that didn't throw an error. How can I make it work within the loops? Thanks, ajith

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oldstyle math
by Alan Bowen 02 Jun '21

02 Jun '21

I no longer get oldstyle numerals in the math environment (ConTeXt ver: 2021.04.29 ) with \definefontfamily[mainface][rm][STIX Two Text] [protrusion=quality, expansion=quality, mode=node, force=yes, features={default, f:oldstyle}, ] \definefallbackfamily[mainface] [mm] [STIX Two Text] [range=digitsnormal, force=yes, features=f:oldstyle, ] \definefontfamily[mainface][mm][STIX Two Math] \setupbodyfont[mainface, 10pt] \starttext 123456789 \m{123456789} \stoptext What have I missed? Alan

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new upload
by Hans Hagen 01 Jun '21

01 Jun '21

Hi, I uploaded a new lmtx version. This time a new mechanism. ----------------------------- From an upcoming details chapter: ----------------------------- The mechanism described here is still experimental. Although it could be implemented in \MKIV\ it is only available in \LMTX. Already early in \MKII\ we had a positioning mechanism available. At that time we had \DVI\ output and specials were used to track positions. A script calculated the positions that were then fed back into the second run. Later Taco wrote \DVIPOS\ which sped up the analysis between runs. When \PDFTEX\ showed, an equivalent positioning mechanism was added there. In \MKIV\ positioning support was optimized a bit as part of the upgrading process but the principles remained the same. The interface to positioning comes with a lot of commands and many of them relate to what we want to do with \METAFUN. The alternative interface discussed here is a bit simpler and has (at least now) less commands and, combined with local name spaces, can be easier to use in more local situations. It's also integrated in the frequently used \type {\framed} commands and has basic support at the \METAFUN\ end. The performance is comparable to the regular positioning mechanisms but especially at the \METAPOST\ end has less overhead. ----------------------------- Here are some examples: ----------------------------- \framed [synchronize=yes,align=normal] {% test test test 1 \sync{one}{1}test test 2 \crlf test test 1 \sync{one}{1}test test test 2 \crlf test 1 \sync{one}{1}test 2 \crlf test test test test 1 \sync{one}{1}test test 2 } \framed [synchronize=yes,align=normal] {% one one \sync{a}{1}two \sync{a}{2}three \crlf one one \sync{a}{1}two two \sync{a}{2}three \crlf one \sync{a}{1}two \sync{a}{2}three \crlf one one one \sync{a}{1}two \sync{a}{2}three } \framed [synchronize=yes,align=normal] {% \syncanchor{one}{1}{1}A \syncanchor{one}{2}{1}BBB \syncanchor{one}{3}{1}C \crlf \syncanchor{one}{1}{2}AA \syncanchor{one}{3}{2}C \crlf \syncanchor{one}{1}{3}AAA \syncanchor{one}{2}{3}BB \syncanchor{one}{3}{3}C } \framed [synchronize=yes,align=normal] {% \alignanchor{one}{1}{1}{l}A \alignanchor{one}{1}{2}{m}AA \alignanchor{one}{1}{3}{r}AAA \syncanchor {one}{1}{4}\crlf \alignanchor{one}{2}{1}{right}B \alignanchor{one}{2}{2}{middle}BB \alignanchor{one}{2}{3}{left}BBB \syncanchor {one}{2}{4} } \startuseMPgraphic{whatever-1} fill OverlayBox withcolor "lightgray" ; drawdot anchorxy("one", 0, 1) withpen pencircle scaled 1mm withcolor "red" ; drawdot anchorxy("one", 0, 2) withpen pencircle scaled 1mm withcolor "red" ; drawdot anchorxy("two", 0, 1) withpen pencircle scaled 1mm withcolor "red" ; drawdot anchorxy("two", 0, 2) withpen pencircle scaled 1mm withcolor "red" ; drawdot anchorxy("three", 0, 1) withpen pencircle scaled 1mm withcolor "red" ; setbounds currentpicture to OverlayBox ; \stopuseMPgraphic \startuseMPgraphic{whatever-2} pair a ; a := anchorxy("one", 0, 1) ; pair b ; b := anchorxy("one", 0, 2) ; drawarrow anchorxy("one", 0, 1) { right } .. anchorxy("one", 0, 2) withcolor "blue" withtransparency (1,.75) ; drawarrow anchorxy("two", 0, 1) { down } .. anchorxy("two", 0, 2) withcolor "blue" withtransparency (1,.75) ; drawarrow anchorxy("two", 0, 1) { dir 30 } .. anchorxy("three", 0, 1) withcolor "blue" withtransparency (1,.75) ; setbounds currentpicture to OverlayBox ; \stopuseMPgraphic \defineoverlay[whatever-1][\useMPgraphic{whatever-1}] \defineoverlay[whatever-2][\useMPgraphic{whatever-2}] \framed [synchronize=yes, align=normal, offset=10pt, frame=off, background={whatever-1,foreground,whatever-2}] {% \markanchor{two}{0}{1}{\red\bf foo}% \markanchor{one}{0}{1} bar rab oof\crlf foo bar rab oof\crlf oof rab bar foo\crlf oof rab \markanchor{two}{0}{2}{\red\bf bar}% \markanchor{one}{0}{2} foo% \markanchor{three}{0}{1}% } \framed [synchronize=yes, align=normal, offset=10pt, frame=off, background={whatever-1,foreground,whatever-2}] {% one one one \syncanchor{a}{1}{1}two two two \syncanchor{a}{2}{1}three three\par one \syncanchor{a}{1}{2}two \syncanchor{a}{2}{2}three\par one \syncanchor{a}{1}{3}two \syncanchor{a}{2}{3}three\par \blank \markanchor{two}{0}{1}{\red\bf foo}% \markanchor{one}{0}{1} bar rab oof\crlf foo bar rab oof\crlf oof rab bar foo\crlf oof rab \markanchor{two}{0}{2}{\red\bf bar}% \markanchor{one}{0}{2} foo% \markanchor{three}{0}{1}% \blank one one \syncanchor{a}{1}{4}two two \syncanchor{a}{2}{4}three\par one one \syncanchor{a}{1}{5}two two \syncanchor{a}{2}{5}three three% \markanchor{three}{0}{1}% } \framed[synchronize=yes,align=normal]{% one one \sync{a}{1}two \sync{a}{2}three\par one one \sync{a}{1}two two \sync{a}{2}three\par \blank tst tst \sync{b}{1}tst \sync{b}{2}tst\par tst \sync{b}{1}tst tst \sync{b}{2}tst\par \blank one \sync{a}{1}two \sync{a}{2}three } \page \startpacked $a = b + c $\par $b = c + d $\par $c = e + f $\par \stoppacked \startpacked \startsynchronizing $a \syncanchor{one}{1}{1}= b \syncanchor{one}{2}{1}+ c$\par $b \syncanchor{one}{1}{2}= c \syncanchor{one}{2}{2}+ d$\par $c \syncanchor{one}{1}{3}= e \syncanchor{one}{2}{3}+ f$\par \stopsynchronizing \stoppacked \startpacked \startsynchronizing $a \sync{one}{1}= b \sync{one}{2}+ c$\par $b \sync{one}{1}= c \sync{one}{2}+ d$\par $c \sync{one}{1}= e \sync{one}{2}+ f$\par \stopsynchronizing \stoppacked \startpacked \startsynchronizing $a \mathsync{1}= b \mathsync{2}+ c$\par $b \mathsync{1}= c \mathsync{2}+ d$\par $ \mordsync{1}= e \mathsync{2}+ f$\par \stopsynchronizing \stoppacked ----------------------------- remark ----------------------------- So, it's a varaant on the positioning mechanism. It also works in framed when the synchronization option is enabled. Don't enable that when not used (as there is some overhead involved). I have no clue how useful it is but users always find a way to use mechanisms. One can do really freaky things with it. Who knows what gets added over time. Also, it doesn't replace the existing positioning mechanism which served us well for decades; it's just a lightweight variant with different pros and cons. 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 -----------------------------------------------------------------

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Understanding penalties for orphans and widows
by denis.maier＠ub.unibe.ch 01 Jun '21

01 Jun '21

Hi, I've read in the wiki (https://wiki.contextgarden.net/Widows_and_orphans_control) that this setting can be used to keep at least two lines together: \startsetups[grid][mypenalties] \setdefaultpenalties \setpenalties\widowpenalties{2}{10000} \setpenalties\clubpenalties {2}{10000} \stopsetups After experimenting with the first argument (see below) it looks to me as if the wording on the wiki should be changed a bit, from <Example how to keep at least 2 lines together> to <Example how to keep at least 2 full lines together> (penalties1 gives me one full line and a second line that is almost full ; penalties2 results in two full lines with a third line that is almost full.). Is my interpretation correct? Denis \setuppapersize[A6] \setuplayout[lines=20] \setupalign[line] \showframe \startsetups[penalties1] \setdefaultpenalties \setpenalties\widowpenalties{1}{10000} \stopsetups \startsetups[penalties2] \setdefaultpenalties \setpenalties\widowpenalties{2}{10000} \stopsetups \starttext \setuplayout[setups=penalties1] \samplefile{tufte}\par Here we are writing some more words to see the effect. Here we are writing some more words to see the effect. Here we are writing some more words to see the effect. \page \setuplayout[setups=penalties2] \samplefile{tufte}\par Here we are writing some more words to see the effect. Here we are writing some more words to see the effect. Here we are writing some more words to see the effect. \stoptext

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