February 2020 - ntg-context - NTG Mailing Lists

Harfbuzz
by Denis Maier 05 Feb '20

05 Feb '20

Hi, I have just read that TeX Live 2020 will use the LuaHBTeX engine for LuaLaTeX. What is the status of HarfBuzz with ConTeXt? I've searched the wiki, but couldn't find anything. Best, Denis

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Unicode 13 – save the \dodo!
by Henning Hraban Ramm 05 Feb '20

05 Feb '20

Hi, I’m a bit late: Last week the Unicode consortium released the latest version of their nowadays mostly-emoji standard. Besides several entries for transgender representation, there are also new animals, and most important: “my” ConTeXt mascot, the Dodo! ;D see https://unicode.org/emoji/charts-13.0/emoji-released.html I still miss e.g. - adaptible colors for everything-else-than-skintone (e.g. vehicles) - political symbols (red flag, hammer-and-sickle – of course the selection would be a political decision and would cause problems with prohibited, e.g. nazi, symbols, but maybe we can just get simple flags in several colors? adaptible would make sense...) - lots of local and/or vegetarian food (Kässpätzle, Leberkäswecken, Schupfnudeln, veg. pizza, tofu…) - some sense… While I agree that we need some standardization in symbols, I still don’t think it was a good idea to mix them with text glyphs and bloat font technology with colors. Greetlings, Hraban

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Official file ending?
by Philipp A. 05 Feb '20

05 Feb '20

Hi! Most text editors have LaTeX specific syntax highlighting, so it makes sense to give your ConTeXt file a ending it can be distinguished with. Is there a blessed one? - .ctx: Would mirror the semi-common .ltx, but is used for XML files inside of ConTeXt itself - .mkiv: Is that just for ConTeXt or all LuaTeX stuff? Would it make sense to give text documents that extension? - Something else? (.tex doesn’t count, it’s shared with LaTeX files and plain TeX files) Best, Philipp

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How to approach a ConTeXt language server?
by Philipp A. 05 Feb '20

05 Feb '20

Language servers are the new big deal in editor and IDE development: https://langserver.org/ It would be cool to have a ConTeXt one for autocompletion (for ConTeXt: command names, \cite IDs, labels, named parameters, …), go-to-definition, hover information (docs about a command) and so on. The way it works is that you have a server process that is the source of truth for all this information, and the editor passes requests to it. The editor tells the server when it opens/closes files and when the user requests something of the above. The way I’d implement it in ConTeXt is to keep a list of open ConTeXt projects in the server (obtained by following \include, \component, \product, \environment, \project). Now my questions begin: 1. Then I’d make context load the project without compiling it to a PDF but make it execute some Lua (how do I do this?) 2. I’d need a way to get all available commands with their signatures into Lua. I assume this is done here, but how? http://www.pragma-ade.nl/general/qrcs/setup-en.pdf 3. Optimally, for hover information and completion, I’d want some help/doc text for each command that has some. Is there a way to get it? 4. Optimally, for label autocompletion, I’d also like a list of defined labels. Since I played around with bibliographies I already know how to query the bibliography DB from Lua. 5. Optimally I’d also want some parse tree of each document, but I assume the way macros work, this doesn’t exist? This would make things easier that I’d otherwise have to (imperfectly) parse out of the document (due to things like catcode changes, but I guess I can pretend they don’t exist and \unprotect is always on) 6. Optimally, for go-to-definition, I’d also want a list of files ConTeXt loaded so I can find definitions in it. Can anyone help me, especially with 1-2? To get me started, it would be great to have an example script and a command line to invoke it, which makes ConTeXt load a main tex file, execute some Lua, and exit without creating a document or writing anything else to the channel Lua writes to (stdout?). Best, Philipp

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New to metapost, could use some help with first steps
by Gerben Wierda 02 Feb '20

02 Feb '20

Hans was so kind to help me with a setup for some generated output. I am trying to understand every line of his example so I can expand on his exmaple to make it fully functional. In his example there is: context('draw textext("\\framed[frame=off,offset=5bp,align={middle,lohi,verytolerant,broad},width=%sbp]{%s}") shifted center AllNodes[%i] ;',w,name,i) as command to draw a node and the node type is defined like this: context("save ApplicationComponent ; path ApplicationComponent ; ApplicationComponent := unitsquare ; ") For a quick example this works, but ‘unitsquare’ is a simple thing. How do I create a more complex shape that is reusable? What if I would like the path to be like this: With this as the complex behaviour of the shape The font size scaled so the label fits inside the image (choice yes/no) The small boxes sized according to the font size or sized according to the box size (choice text/box) The bounding box following the actual complex outline The upper of the two small boxes in line with the upper text line (in case the size is coupled to the text size) The colour of the background a default colour or given as parameter This is one of the more complex shapes, if I can do this one it might give me enough information to define all the other ones. Sorry to bother all of you but the learning curve is steep and I always have not enough time. Gerben Wierda Chess and the Art of Enterprise Architecture <https://ea.rna.nl/the-book/> Mastering ArchiMate <https://ea.rna.nl/the-book-edition-iii/> Architecture for Real Enterprises <https://www.infoworld.com/blog/architecture-for-real-enterprises/> at InfoWorld On Slippery Ice <https://eapj.org/on-slippery-ice/> at EAPJ

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