- ntg-context - Mailing Lists

endnote
by Thomas Meyer 25 Jul '25

25 Jul '25

Hi folks, how can I set an endnote in color and without symbol? That should be not so difficult but what I try doesn't work. Thank you for any help! Greetings Tomás

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How to pass \MPcolor{aColour} to a lua function
by Keith McKay 25 Jul '25

25 Jul '25

Hi all, I have written a lua function, with the help of CheatGPT ChatGPT, since my lua skills are less than zero, which takes two colours and blends them together . This function is part of another function which setups a bytemap and fills each point with the blended colour. I can only do this if I use "hard wired" named colours (see the code below). I would like to be able to select colours from a Palette of colours and pass them to the lua function instead. I have tried ChatGPT again and I've looked though the wiki and some manuals but can't find a solution. I realise that function MP.MakeByteMap(i) would have to become function MP.MakeByteMap(i,aColour1,aColour2), however I'm guessing that I'll have to separate the \MPcolor{aColour} out to red part, green part, blue part and multiply by 255 and pass that to the function? Any hints or suggestions on a solution to this would be greatly appreciated. Best Wishes Keith %%%%%%%% \startluacode local namedColors = { red = { 255, 0, 0}, green = { 0, 255, 0}, blue = { 0, 0, 255}, white = { 255, 255, 255}, black = { 0, 0, 0}, yellow = { 255, 255, 0}, cyan = { 0, 255, 255}, magenta = { 255, 0, 255}, gray = { 128, 128, 128} } local function blendColors(color1, color2, t) -- Ensure color1 and color2 are in the format {r, g, b} -- Perform linear interpolation (lerp) on each color channel local newColor = { color1[1] * (1 - t) + color2[1] * t, color1[2] * (1 - t) + color2[2] * t, color1[3] * (1 - t) + color2[3] * t } return newColor end local random = math.random local setbytemap = mp.setbytemap function MP.MakeByteMap(i) mp.newbytemap(i,1000,1000,3) local c1 = namedColors["white"] local c2 = namedColors["black"] local c3 = namedColors["red"] local c4 = namedColors["yellow"] local c5 = namedColors["cyan"] local c6 = namedColors["magenta"] for x=0,1000 do for y=0,1000 do noise = math.random(1, 1000) / 1000 -- Generate a random noise value between 0 and 1 --calculates the color based on the noise value --local mixedColor = blendColors("cyan","magenta", noise) -- Should give a blended color local mixedColor = blendColors(c5, c6, noise) -- Should give a blended color setbytemap(i, x, y, (mixedColor[1]), (mixedColor[2]), (mixedColor[3]) ) end end end \stopluacode \usecolors[crayola] \definepalet[MyColors][1=SkyBlue,2=Orange,3=PigPink,4=BananaMania,5=BrilliantRose] \setuppalet[MyColors] \starttext \startMPpage%[Page 7] numeric p; p := 4; lua.MP.MakeByteMap(p); fill unitsquare xyscaled (999,999) withbytemap p; \stopMPpage \stoptext %%%%%%%%%%%%

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Layout of a table with formulae
by Willi Egger 25 Jul '25

25 Jul '25

Hi all, at the moment I am writing an article about the use of the Soroban (Japanese abacus). There are a couple of tables showing formulae. The struggle is, that the alignment of the formulae is strange. I use alignmentcharacter= and aligncharacter=yes for aligning the formulae in a bTABLE…\eTABLE construct. It appears that this causes ConTeXt to use the alignment character at the end of the headings + 1 position. I would be glad if someone could enlighten me how to improve the layout. Kind regards Willi

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Patch to use ls-R files with TeX Live
by Max Chernoff 25 Jul '25

25 Jul '25

Hi Hans, TeX Live contains ~31 times as many files as the ConTeXt distribution, so running "mtxrun --generate" is relatively slow. However, TeX Live already generates a filename index for all its files, so if we use that instead of traversing the filesystem, "mtxrun --generate" runs quite a bit quicker. My testing shows that currently "mtxrun --generate" takes 2.7 seconds to run, and with this patch it takes 1.5 seconds; real-world results will likely show an even greater difference since I tested it with repeated runs (so the OS has cached everything) and I have really fast disks. I've included a diff inline below, and I've also attached the modified files. I didn't attach mtxrun.lua since the file is so large, so you'll need to manually copy the changes from the diff. Also, can you please rename m-texlive.mkxl to m-texlive.mkiv? LuaTeX doesn't find the file with the ".mkxl" suffix, and I'd like to keep supporting MkIV in TeX Live. Thanks, -- Max diff --git a/tex/context/base/mkiv/data-fil.lua b/tex/context/base/mkiv/data-fil.lua index 8dbc8a0..1f7ff94 100644 --- a/tex/context/base/mkiv/data-fil.lua +++ b/tex/context/base/mkiv/data-fil.lua @@ -45,7 +45,13 @@ end function resolvers.generators.file(specification) local pathname = specification.filename - local content = scanfiles(pathname,false,true) -- scan once + + local content + if resolvers.target() == "texlive" then + content = resolvers.scantexlive(pathname,false,true) + else + content = scanfiles(pathname,false,true) -- scan once + end registerfilehash(pathname,content,true) end diff --git a/tex/context/base/mkiv/data-res.lua b/tex/context/base/mkiv/data-res.lua index a1b6795..114d780 100644 --- a/tex/context/base/mkiv/data-res.lua +++ b/tex/context/base/mkiv/data-res.lua @@ -489,6 +489,9 @@ local function load_configuration_files() end end end + if data and data.target and data.target ~= "" then + instance.target = data.target + end data = data and data.content if data then if trace_locating then @@ -2042,3 +2045,11 @@ function resolvers.knownvariables(pattern) return { } end end + +function resolvers.target() + if instance and instance.target then + return instance.target + else + return "context" + end +end diff --git a/tex/context/base/mkiv/data-tld.lua b/tex/context/base/mkiv/data-tld.lua index f6e3286..c1b27d3 100644 --- a/tex/context/base/mkiv/data-tld.lua +++ b/tex/context/base/mkiv/data-tld.lua @@ -6,6 +6,7 @@ if not modules then modules = { } end modules ['data-tld'] = { license = "see context related readme files", } +local report = logs.reporter("resolvers","texlive") -- This is a variant on code I found in a \TEXLIVE\ installation in \type -- {cont-sys.mkxl} in 2025 (probably written by Max). See \type {m-texlive.mkxl}. @@ -67,3 +68,99 @@ function resolvers.checktexlive(texlive) end end end + +function resolvers.scantexlive(path, ...) + local realpath = resolvers.resolve(path) + local lsrfile = file.join(realpath, "ls-R") + if lfs.isfile(lsrfile) then + return resolvers.parselsr(lsrfile, path) + else + return resolvers.scanfiles(path, ...) + end +end + +function resolvers.parselsr(lsrfile, path) + local content = io.loaddata(lsrfile) + if not content or content == "" then + report("no content in ls-R file %a", lsrfile) + return + end + + --[[ slower + local files, remap, directories = { }, { }, { } + local n_files, n_remap, n_directories = 0, 0, 0 + local sections = content:split("\n\n") + for _, section in ipairs(sections) do + if section:match("^%%") then + goto continue + end + local lines = section:split("\n") + local base = lines[1]:sub(3, -2) + + directories[base] = lines + n_directories = n_directories + 1 + + ::continue:: + end + + for directory, lines in pairs(directories) do + for _, filename in ipairs(lines) do + if filename:match(":") or + directories[file.join(directory, filename)] + then + goto continue + end + + files[filename] = directory + n_files = n_files + 1 + + if filename:match("%u") then + remap[filename:lower()] = filename + n_remap = n_remap + 1 + end + + ::continue:: + end + end + --]] + + local files, remap = { }, { } + local n_files, n_remap, n_directories = 0, 0, 0 + local sections = content:split("\n\n") + for _, section in ipairs(sections) do + if section:match("^%%") then + goto continue_outer + end + local lines = section:split("\n") + local base = lines[1]:sub(3, -2) + n_directories = n_directories + 1 + + for _, filename in ipairs(lines) do + if filename:match(":") then + goto continue_inner + end + + files[filename] = base + n_files = n_files + 1 + + if filename:match("%u") then + remap[filename:lower()] = filename + n_remap = n_remap + 1 + end + + ::continue_inner:: + end + ::continue_outer:: + end + + return { + files = files, + remap = remap, + metadata = { + directories = n_directories, + files = n_files, + remappings = n_remap, + path = path, + } + } +end diff --git a/scripts/context/lua/mtxrun.lua b/scripts/context/lua/mtxrun.lua index ea7954d..b4af471 100644 --- a/scripts/context/lua/mtxrun.lua +++ b/scripts/context/lua/mtxrun.lua @@ -27075,6 +27200,7 @@ local ownlibs = { -- order can be made better 'data-aux.lua', -- updater 'data-tmf.lua', 'data-lst.lua', + 'data-tld.lua', -- TeX Live 'libs-ini.lua', @@ -27105,6 +27231,9 @@ local ownlist = { owntree .. "/../../../texmf-local/tex/context/base", owntree .. "/../../../texmf-context/tex/context/base", owntree .. "/../../../texmf/tex/context/base", + -- TeX Live + owntree .. "/../../texmf-dist/tex/context/base", + owntree .. "/../../texmf-dist/tex/context/base/mkiv", } if ownpath == "." then table.remove(ownlist,1) end diff --git a/tex/context/base/mkiv/luat-lib.mkiv b/tex/context/base/mkiv/luat-lib.mkiv index e07a2d8..1cd0e3d 100644 --- a/tex/context/base/mkiv/luat-lib.mkiv +++ b/tex/context/base/mkiv/luat-lib.mkiv @@ -71,6 +71,7 @@ \registerctxluafile{data-con}{} \registerctxluafile{data-use}{} \registerctxluafile{data-aux}{} +\registerctxluafile{data-tld}{} \registerctxluafile{luat-cbk}{} \registerctxluafile{luat-run}{} diff --git a/tex/context/base/mkxl/luat-lib.mkxl b/tex/context/base/mkxl/luat-lib.mkxl index 64128e6..35d3381 100644 --- a/tex/context/base/mkxl/luat-lib.mkxl +++ b/tex/context/base/mkxl/luat-lib.mkxl @@ -76,6 +76,7 @@ \registerctxluafile{data-con}{} \registerctxluafile{data-use}{} \registerctxluafile{data-aux}{} +\registerctxluafile{data-tld}{} \registerctxluafile{luat-cbk}{autosuffix} \registerctxluafile{luat-run}{autosuffix}

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Margin text?
by Ursula Hermann 24 Jul '25

24 Jul '25

Dear List What I would like to know is, if the graphic with: Teil II is a margin text, or is ths in the body text too? i am not sure. 320 Is the page number. Many thanks Uschi

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Space after hyphen in exported html
by Florent Michel 24 Jul '25

24 Jul '25

Hi, Thanks a lot Hans and everyone who has worked on it for the new upload! From what I can tell from my few projects, math in HTML export seems to have significantly improved. I have just noticed what seems to be a small issue with hyphenated words in the HTML export: an extra space is added when the pdf output has a line break after the hyphen. Here is a minimal example showing the issue: __________________________________________ \setupbackend[export=yes] \starttext blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah co-worker \stoptext __________________________________________ (The number of ‘blah’s is adjusted to that ConTeXt adds a line break after ‘co-’ in the pdf.) The relevant part of the .html output is: <div> blah blah blah blah blah blah blah blah blah blah blah blah blah blah blah co- worker</div> (Notice the space after ‘co-’.) Would there be a way to avoid this extra space? As an alternative, is it possible to prevent line breaks after a hyphen? (I tried playing with \setupbreakpoint, e.g., \setupbreakpoint[test][-][nleft=100,nright=100], but did not manage to get it working for the hyphens, although it seems to work well for other characters.) Cheers, Florent

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export and tagging
by Hans Hagen 24 Jul '25

24 Jul '25

Hi, Just for the record. Mikael and I will pick up on the export as well as tagging next week and use lecture notes as examples. Wrt tagging we only adapted some NoStructs to Div/Span and added languages to a few environments. It has a bit lower priority. There's also a slightly different metod for tagging paragraphs (which only affects cases where a paragraph start inside a group and finishes outside the group, which seldom happens but maybe it has side effects. We are wondering about some additional structure related tracing to help users figure out useable tagging mappings within the limitations of pdf (maybe a few defaults for simple predictable documents like articles that often have a rather limited structure anyway, but the system as a whole remains configured for extremes). In the export we can handle sub documents (this is driven by a configuration file that permits parallel processing) and noticed soem issues with generated images but that was fixed so it will also be in the next upload. If there are users who export e.g. chapters from books we can tell them how to experiment with that. No update these few days, probably after the weekend. 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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Line breaks within TABLE cells
by Kip Warner 23 Jul '25

23 Jul '25

Hello list, I am trying to insert a manual line break inside of a TABLE cell, but can't seem to get it to work. I'm typesetting some mathematical formulae. See below minimal: \starttext \placetable[here,split,none][table:appendix_notation]{} { \bTABLE[split=repeat,option=stretch] \setupTABLE[row][each][align=center] \setupTABLE[column][3][align=right] \bTABLEhead \bTR \bTH Symbol \eTH \bTH Constraints \eTH \bTH Description \eTH \eTR \eTABLEhead \bTABLEbody \bTR \bTC \math{\phi_i} \eTC % I want a line break right where the first comma is in the next line, but inserting a \\ doesn't seem to work \bTC \math{\phi_i \in \mathbb{R},\\ i \in \mathbb{N} \cap [0,\Phi)} \eTC \bTC Some random textual description here. \eTC \eTR \bTR \bTC \math{\underline{\phi}_i} \eTC \bTC \math{\underline{\phi}_i \in \mathbb{R} \cap [0,1], i \in \mathbb{N} \cap [0,\Phi)} \eTC \bTC Some additional random textual description here. \eTC \eTR \eTABLEbody \eTABLE } \stoptext Any help appreciated. -- Kip Warner OpenPGP signed/encrypted mail preferred https://www.thevertigo.com

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[OT] Mini-keypad for typing math symbols
by Bruce Horrocks 21 Jul '25

21 Jul '25

<https://www.crowdsupply.com/summa-cogni/mathpad> This might be of interest to some. I have no affiliation with the developer. It's a specialised keypad that sits alongside your normal keyboard and provides rapid access to 112 mathematical symbols and Greek letters, saving the need to hunt around in fiddly character viewers. It's switchable between Word, OpenOffice and LaTeX — Bruce Horrocks Hampshire, UK

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linebreak in setupheadertexts
by Thomas Meyer 21 Jul '25

21 Jul '25

Hi folks, once again I have a problem that I can't solve: I would like to have a linebreak for \setupheadertexts. \setupheadertexts [{\bf Johnson}, Uwe][{\sl Mutmassungen über Jakob}] \starttext Freiheit ist die Einsicht in die Notwendigkeit. \stoptext *Johnson,* Uwe should be the result. Unfortunately, what I have tried (\\, \crlf, \break) does not work. Thanks for any help Tómas

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