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margin of inner item group
by Sylvain Hubert 07 Sep '21

07 Sep '21

Dear List, Does anyone know how to set the margin of an inner item group? The natural way does not seem to work: \showframe \starttext \startitemize[margin=5em] \item 1 \startitemize[margin=10em] \item 1 \item 2 \item 3 \stopitemize \item 2 \item 3 \stopitemize \stoptext In the doc above, only the outer item group has a margin. Any help will be appreciated. Best, Sylvain

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itemize problems
by Sylvain Hubert 07 Sep '21

07 Sep '21

Dear List, Here's a collection of four problems about item groups that I've just encountered. 1. 'n' and 'packed' not playing well with other options. This works: \defineitemgroup[myitems][itemize][margin=2em,before=before] \setupmyitems[n,packed] \starttext text \startmyitems \item 1 \item 2 \stopmyitems \stoptext This does not: \defineitemgroup[myitems][itemize][margin=2em,before=before,n,packed] This does not either: \defineitemgroup[myitems][itemize] \setupmyitems[n,packed,margin=2em,before=before] Is there a rule for this glitch which makes it worth memorizing, or is this just a bug? 2. 'before' not working in nested item groups. \starttext \startitemize[before=before1] \item 1 \startitemize[before=before2] \item 2 \stopitemize \stopitemize \stoptext Both before1 and before2 should appear, but only before1 is shown. 3. How to wrap the line under the bulletin or number? To be more precise, the current wrapping behavior of, say, "\item 0 1 2 3 4 5 6 7 8 9" is: * 0 1 2 3 4 5 6 7 8 9 How can we remove the indentation of the second line and make it like * 0 1 2 3 4 5 6 7 8 9 4. How to put the items on the same line? That is, for "\item 0 \item 1 \item 2", I would like it to be like * 0 * 1 * 2 instead of * 0 * 1 * 2 My context version: 2021.03.05 19:11, texlive. Any help with any of the problems above would be greatly appreciated. Best, Sylvain

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error: (nodes): fuzzy token cleanup in whatsit node ...
by Sylvain Hubert 07 Sep '21

07 Sep '21

% context version: 2021.03.05 19:11 % This seems to be a bug of a very subtle layout problem. % Inserting or removing anything will likely to suppress the bug \defineitemgroup[choice][itemize] \setupchoice[packed,columns,one] \setupchoice[before={\blank[medium]}] \starttext .\blank[32*big] \startitemize \item 0 \startchoice[text] \item 0 \item 0 \item 0 \item 0 \stopchoice \item 0 \startchoice \item 0 \item 0 \item 0 \item 0 \stopchoice \item 0 \startchoice \item 0 \item 0 \item 0 \item 0 \stopchoice \item 0 \startchoice \item 0 \item 0 \item 0 \item 0 \stopchoice \item 0 \startchoice \item 0 \item 0 \item 0 \item 0 \stopchoice \item 0 \startchoice \item 0 \item 0 \item 0 \item 0 \stopchoice \item 0 \startchoice \item 0 \item 0 \item 0 \item 0 \stopchoice \blank[6*big] \item 0 \startchoice \item 0 \item 0 \item 0 \item 0 \stopchoice \item 0 \startchoice \item 0 \item 0 \item 0 \item 0 \stopchoice \item 0 \startchoice \item 0 \item 0 \item 0 \item 0 \stopchoice \blank[6*big] \item 0 \startchoice \item 0 \item 0 \item 0 \item 0 \stopchoice \item 0 \startchoice \item 0 \item 0 \item 0 \item 0 \stopchoice \item 0 \startchoice \item 0 \item 0 \item 0 \item 0 \stopchoice \item 0 \startchoice \item 0 \item 0 \item 0 \item 0 \stopchoice \item 0 \startchoice \item 0 \item 0 \item 0 \item 0 \stopchoice \stopitemize \stoptext % ! error: (nodes): fuzzy token cleanup in whatsit node with type whatsit and subtype 29mtx-context | fatal error: return code: 256

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\usemodule[chinese] not found
by Sylvain Hubert 07 Sep '21

07 Sep '21

Dear List, I'm trying to typeset an item group (itemize) with chinese numbering. It is suggested in multiple older documentations and answers that \startitemize[c] should be used, for which \usemodule[chinese] is required. But I can no longer find the 'chinese' module neither in texlive, in lmtx, nor on the website. Has this module been removed or replaced by something else? Thanks! Best, Sylvain

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cld, postponing and images
by Henning Hraban Ramm 06 Sep '21

06 Sep '21

I think I tangled myself... - I’ve a macro defined in Lua that uses fullpagemakeup and \setlayer to place an image on an empty page. - This macro is called from within a postponing environment. - I check figures.current().status.fullname if the image is found ... - and then read xsize and ysize from figures.current().status.private - I there is no image placed before the postponed ones, figures.current() is nil – If I place one, figures.current() is always the last “normal” one, never that from my macro call. – If I call context.getfiguredimensions({imagename}) within the macro where I calculate the size, and again before context.externalfigure(), then the images are found and have the right size according to figures.currents(), but... - if I didn’t place the same image before anywhere, the previous image is used, and if there was none, the place just stays empty (no dummy box). I don’t know how to resolve this, spent already the whole day to understand the problem this far. At the moment my workaround is to place all used images somewhere outside of the visible page. Hraban

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cld questions
by Henning Hraban Ramm 06 Sep '21

06 Sep '21

Hi again, I’m converting a few macros into Lua (LMTX), but couldn’t find some answers in the docs: * How translates \ifodd\realpageno ? This doesn’t work: if ((tex.getcount("realpageno") mod 2) == 1) then a = 1 end I found tex.ifodd but don’t know how to use it either. * How to access my \def’d macros? Is this supposed to work?: TeX: \def\Something{1cm} Lua: context.Something() (It doesn’t in my case, but if it should, I can investigate.) * TeX primitives Is tex.strut and tex.par supposed to work? Or how should I access these? * interface definitions: Lua: interfaces.implement { name = "MyFun", public = true, --permanent = false, -- what does this mean? arguments = { "string", "string", "string", "string" }, actions = function(reference, y, text, filename) -- a lot end, } TeX: \MyFun{ref:some}{1cm}{bla}{hacker} 0) I don’t understand what “permanent” does and why I should maybe disable it. (cld-mkiv, p.146) 1) The parameter y is actually supposed to be a dimension, but if I declare it "dimen", ConTeXt says there wasn’t a number at "1cm". Or is a measure like that not a dimension? 2) The original interface of \MyFun had two optional parameters. I couldn’t find how to do that with interfaces.implement. cld-mkiv, p.151 (12.7) shows how to do lists or key=value, but not single optional args. I’d be glad to get a few hints. Hraban

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ConTeXt syntax highlighting for Atom
by Henning Hraban Ramm 06 Sep '21

06 Sep '21

Hi, in case you use "language-context" from https://github.com/massifrg/language-context.git : I just updated the command list to LMTX and fixed backslash quoting, please update. (Don’t use the "official" language-context module, it’s very outdated, but the author didn’t react to Massi’s and my offer to take over.) Hraban

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Use MetaPost to distort images?
by Henning Hraban Ramm 06 Sep '21

06 Sep '21

Hi, is it possible to apply geometric transformations to images using MetaPost? This is again way over my head, but I’m still trying different methods to let a ConTeXt document look more “hand-made”. In my example*, I added frame and shadow to a photo and _distorted_ it slightly to have it look like a postcard was glued on the page (with a piece of tape). I’d like to automate and randomize that process. I guess I could achieve something similar with ImageMagick (not with GraphicsMagick), but if it would be possible inside LMTX that would be great. Hraban *) not small enough for the mailing list; see https://sedna.fiee.net/f/fb532dc85c784147a149/

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one quick remark about textext.dflt (vs textext.dlft)
by Garulfo 05 Sep '21

05 Sep '21

Hi all, one remark, I was expecting to be allowed to use textext.dlft but finally the appropriate command appears to be textext.dflt which require to switch F and L letters. Is it on purpose ? would it make sense to have a dlft version to match LeFT ?

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Automatically adjust number of table columns
by Sylvain Hubert 05 Sep '21

05 Sep '21

Dear List, I'm trying to make "\startchoice", "\stopchoice", and "\choice", such that: \startchoice \choice -1 \choice 0 \choice 1 \choice N/A \stopchoice results in (_ for whitespace) A. -1______B. 0______C. 1______D. N/A while \startchoice \choice not so short choice \choice must wrap here \choice another choice \choice yet another choice \stopchoice results in A. not so short choice____B. must wrap here C. another choice_______D. yet another choice In another word, it should have the same effect as the addData() function in the page below (save as whatever.html and open it) <html> <head> <style> table { width: 100%; border: 1px solid black; } #root { width: 10cm; } </style> </head> <body> <div id="root"> </div> <script> function make(tag, children) { const node = document.createElement(tag); for (const c of children) { if (typeof c === "string") { node.appendChild(document.createTextNode(c)); } else { node.appendChild(c); } } return node; } function addData(data) { const root = document.getElementById("root"); let table = make("table", [make("tr", data.map(d => make("td", [d])))]); root.appendChild(table); if (table.scrollWidth <= root.offsetWidth) { return; } root.removeChild(table); table = make("table", [ make("tr", [make("td", [data[0]]), make("td", [data[1]])]), make("tr", [make("td", [data[2]]), make("td", [data[3]])]), ]); root.appendChild(table); if (table.scrollWidth <= root.offsetWidth) { return; } root.removeChild(table); table = make("table", data.map(d => make("tr", [make("td", [d])]))); root.appendChild(table); } addData(["1".repeat(10), "2".repeat(10), "3".repeat(10), "4".repeat(10), ]); addData(["1".repeat(20), "2".repeat(20), "3".repeat(20), "4".repeat(20), ]); addData(["1".repeat(30), "2".repeat(30), "3".repeat(30), "4".repeat(30), ]); </script> </body> </html> Does anyone have an idea how it can be implemented in context? Thanks in advance! Best, Sylvain

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