- ntg-context - Mailing Lists

color check
by Floris van Manen 06 Dec '18

06 Dec '18

while experimenting with the sample transparency color code \definecolor [transparentred] [r=1,t=.5,a=1] \definecolor [transparentblue] [b=1,t=.5,a=1] \definecolor [solidyellow] [y=1,t=1,a=1] \starttext \startTEXpage ~This is some sample text that goes behind the rectangles\hskip-80mm \blackrule[width=18mm,height=10mm,depth=10mm,color=solidyellow]\hskip-6mm \blackrule[width=18mm,height=20mm,depth=1mm,color=transparentred]\hskip-6mm \blackrule[width=18mm,height=10mm,depth=10mm,color=transparentblue]\hskip-6mm \blackrule[width=18mm,height=20mm,depth=1mm,color=solidyellow]\hskip27mm \stopTEXpage \stoptext i get the intended result. if i change the yellow t value to .99 \definecolor [solidyellow] [y=1,t=0.99,a=1] some green layer pops up. as this is all about software, there is a reason to this. it cold be the OSX preview program too, of course. can someone explain to me ? :-) .F

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'figures.getinfo()' not to exit ConTeXt
by Procházka Lukáš Ing. 06 Dec '18

06 Dec '18

Hello, I'm using the following code, mentioned here some time ago, to get some info about PDF: ---- \startluacode figures.getinfo = function(name, page) if type(name) == "string" then name = { name = name, page = page } end if name.name then local data = figures.push(name) --figures.identify() local ok, res = pcall(figures.identify) print(">>1", ok, res) --figures.check() local ok, res = pcall(figures.check) print(">>2", ok, res) figures.pop() return data end end local data = figures.getinfo("NonExisting.pdf") \stopluacode ---- The problem is that once the PDF file doesn't exist, the function causes ConTeXt to exit, even when I enclose 'figure.check()' into the 'pcall' (to be handled like try/catch mechanism). Is there a way so that the function 'figures.getinfo()' does't exit ConTeXt, it just returns 'nil', or even gives info which directories (or even which file types) were searched? TIA. Best regards, Lukas -- Ing. Lukáš Procházka | mailto:LPr@pontex.cz Pontex s. r. o. | mailto:pontex@pontex.cz | http://www.pontex.cz | IDDS: nrpt3sn | IČO: 40763439 Bezová 1658 147 14 Praha 4 Mob.: +420 702 033 396

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align in setuphead
by Jan U. Hasecke 06 Dec '18

06 Dec '18

Hi all, why aligns left to right and right to left in this example? \setuphead [title] [align=left] \starttext \starttitle[title=Test] \stoptitle \stoptext TIA juh

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Ending strings with non-break space in lang-txt.lua
by Marco Patzer 06 Dec '18

06 Dec '18

Hi! I've got a few unfortunate line breaks in my documents. In particular, breaks are introduced in between the string “page” and the number: See figure 1 at page 2. The reason is that many strings in lang-txt.lua end in a space, rather than a non-break space: ["atpage"]={ ["labels"]={ … ["en"]="at page ", … I fixed this by defining \setuplabeltext [en] [atpage=at page\nbsp] So I wonder: Does it ever make sense to have a regular space at the end of those commands? I just skimmed through the file and most, if not all, strings ending in a space would actually benefit from having it replaced by a non-break space IMO. Example: \def\pageref#1%% {\in{figure}[#1] \labeltext{atpage}\at[#1]} \starttext \hsize 3cm See \pageref{foo}. \page \startplacefigure [reference=foo] \stopplacefigure \stoptext Marco

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commands manual (setup-en.pdf) organized by topic
by mf 06 Dec '18

06 Dec '18

Hello list, i always use the "Commands" manual a lot to retrieve information about the parameters and options of ConTeXt commands. The manual is built from the .xml files in the tex/texmf-context/tex/context/interface directory. Since those files are organized by topic, is it possible to generate a manual with the same contents of setup-en.pdf, but sorted by topic, and then alphabetically? I've seen there's a module for the manual creation (tex/texmf-context/tex/context/modules/mkiv/x-setups-basics.mkiv), but i can't see options for a different sorting of commands. TIA, Massimiliano PS: (something about the question originating this request) I know only a little portion of the available ConTeXt commands, and sometimes i realize that there are commands i was not aware of, that fit better than my solutions, which were built with the few commands i knew (i.e. think of the many variants of delimited text).

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regression in bib system
by Thomas A. Schmitz 06 Dec '18

06 Dec '18

Hans, Alan, I'm experiencing a regression with bibliographies in the latest beta (2018.12.01 13:20). I haven't been able to reduce it to a MWE yet, but here's what I get from my bibliographic files: compilation hangs with this message: close source > level 2, order 8, name '/mnt/shared/Documents/excerpts.tex' close source > level 1, order 8, name '/mnt/shared/context/tex/texmf-context/tex/context/base/mkiv/cont-yes.mkiv' backend > info > no date/time but fake id information will be added ? ^\/mnt/shared/context/tex/texmf-linux-64/bin/context: line 2: 18125 When I hit enter, I get mtx-context | fatal error: return code: 1 but the produced pdf appears to be correct. The same file compiles fine with version 2018.10.02 23:17. I don't have any version in between. I'll see if I can produce a MWE, but I wanted to give you a heads up in advance. All best Thomas

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upcoming betas
by Hans Hagen 05 Dec '18

05 Dec '18

Hi We currently have mkii : which uses pdftex/xetex mkiv : which uses lua(jit)tex 1.10 and next year we will also have lmtx : which runs luatex functionally there is no difference between mkiv and lmtx but there are some diferences under the hood. It might also turn out to be a bit more efficient (at least this is what experiments here indicate). The lmtx version is part of a "long term stability" approach and it will probably take some time (and esp testing) to reach that goal. When experiments work out well, the next context meeting will be showtime. One of these days I will ask context dev to test this version because decisions have to be made on how to roll this out. The reason that I mention this development is that in upcoming beta releases one can run into (not that dramatic, easy to fix) issues related to reshuffing some code. I might also involve users who (I know) runs massive amounts of complex documents. Because there is no functional change there are no consequences for daily use of context. However, there can be additional functionality at some point. So, from the users perspective lmtx is just mkiv, but in some places it will identify itself as lmtx (which is handy for checking). 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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Text running of the page with default=top float paremeter
by Marco Patzer 05 Dec '18

05 Dec '18

Hi! I've got a problem with text running off the page. The culprit is the "default=top" float parameter. Is this expected behaviour? Slightly OT bonus question: What does the “default=auto” parameter do? I added that years ago and have not found documentation what it actually does. I actually have set "default=auto, top, bottom". MWE: \definefloat [smallfigure] [smallfigures] [figure] \setupfloat [smallfigure] [default=outer] \setupfloat [figure] [default=top] %% commenting this fixes the issue \showframe \starttext \startplacefigure \externalfigure \stopplacefigure \startplacesmallfigure \externalfigure \stopplacesmallfigure \dorecurse{4}{\samplefile{knuth}} \stoptext Marco

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Macro to write a vector with Metafun (again)
by Fabrice Couvreur 04 Dec '18

04 Dec '18

Hello Hans,The macro to draw a vector does not work even with the latest version of context standalone. Thank you Fabrice \useMPlibrary[mat] % will be in meta-imp-mat.mkiv \startMPextensions vardef math_stacker_arrow_shape = image ( drawarrow (OverlayWidth,OverlayOffset) -- (0,OverlayOffset) withcolor OverlayLineColor ; setbounds currentpicture to boundingbox currentpicture bottomenlarged (OverlayOffset/2) topenlarged (OverlayOffset/2) ; ) enddef ; vardef math_stacker_leftarrow_shape = math_stacker_arrow_shape enddef ; vardef math_stacker_rightarrow_shape = math_stacker_arrow_shape rotated 180 enddef ; \stopMPextensions \startuniqueMPgraphic{math:stacker:\number"2190} math_stacker_draw(math_stacker_leftarrow_shape) ; \stopuniqueMPgraphic \startuniqueMPgraphic{math:stacker:\number"2192} math_stacker_draw(math_stacker_rightarrow_shape) ; \stopuniqueMPgraphic % so far \setupmathstackers [both] % vfenced] [color=darkred, alternative=mp] \setupmathstackers [top] [color=darkred, alternative=mp] \setupmathstackers [bottom] [color=darkred, alternative=mp] \starttext $\overbracket {a+b+c+d} \quad \underbracket {a+b+c+d} \quad \doublebracket{a+b+c+d}$ \blank $\overparent {a+b+c+d} \quad \underparent {a+b+c+d} \quad \doubleparent {a+b+c+d}$ \blank $\overbrace {a+b+c+d} \quad \underbrace {a+b+c+d} \quad \doublebrace {a+b+c+d}$ \blank $\overbar {a+b+c+d} \quad \underbar {a+b+c+d} \quad \doublebar {a+b+c+d}$ \blank $\overleftarrow {a+b+c+d} \quad \overrightarrow {a+b+c+d} $ \blank $\underleftarrow {a+b+c+d} \quad \underrightarrow {a+b+c+d} $ \blank \stoptext

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directlua question
by Hans van der Meer 04 Dec '18

04 Dec '18

I am trying to extract something from a string with a \directlua call, the last word of a string in case: \directlua{tex.print(string.match(“This is a string","%s%a$"))} However, the %s%a are not working with the TeX-error “unfinished string near eof”. Obviously caused by the %’s. How to get this working? \textpercent will not do, off course within Luacode. dr. Hans van der Meer

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