[NTG-context] Re: more register questions!

[mf]

Il 02/05/24 17:01, Thomas A. Schmitz ha scritto:

Hi,

making wonderful progress on my registers and translating from xml. 
There is one thing I can't figure out (and I or some other good soul may 
have asked in the past...). Is it possible to mark occurrences in 
footnotes? Ideally, the entry in the register would look like


p. 100\high{20}

to show that the term occurs in note 20 on p. 100. But if that's asking 
too much, I would be content with applying a processor (say, italic) to 
these register entries. From the looks of the tuc file, Context doesn't 
appear to "know" that a register entry is within a footnote. But Hans 
never ceases to amaze me, so maybe there is a way (short of applying 
special markup to these notes in the source)?




I did something like that, with a processor that added a "n" after the 
occurrence page number.


Since you typeset XML, maybe you can detect that an index (register) 
reference happens inside a note from the DOM element you are typesetting.


Then you use a command like this:

\index[NoteProcessor->sortkey]{index term}

where NoteProcessor is defined like this:

\defineprocessor[NoteProcessor][right={\itx n}]

In this case I'm adding a smaller "n" to the right of the page number of 
the occurrence.


Adding the \high style is not difficult:

\defineprocessor[NoteProcessor][right=\high{n}]

but replacing a fixed "n" with the footnote number is quite challenging.

The second argument of \defineprocessor has a "command=\...##1" option 
that could be exploited, but I don't know exactly what gets passed to 
that custom command as ##1; maybe the page number of the occurrence.


In that case, I'd look for a way to store the association between that 
occurrence and the footnote number, and retrieve that in the custom command.


Massi
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[NTG-context] Re: output filename with SHA256

[mf]

Il 23/02/24 14:32, Pablo Rodriguez via ntg-context ha scritto:

Dear list,

I have the following sample file:

\starttext
whatever

\startluacode
luatex.wrapup(
   function()
 local t = {}
 local pdf_file_name = tex.jobname..".pdf"
 local sha_pdf = utilities.sha2.hash256(io.loaddata(pdf_file_name))
 local c_r = environment.currentrun
 t[c_r] =  sha_pdf
 local exists_pdf = ("%s_%s-%s.pdf"):format(c_r-1, tex.jobname, t[c_r-1])
 if io.exists(exists_pdf) then os.remove(exists_pdf) end
 os.rename(pdf_file_name, ("%s_%s-%s.pdf"):format(c_r, tex.jobname,
sha_pdf))
   end
)
\stopluacode
\stoptext

In short, it adds its SHA256 to the final filename.

Since renames the PDF document in each run, I would like to remove the
output from the previous run.

The table seems not to store the value from a previous run.

I see now that I am creating it again with each run.

Is there any way to check if compilation needs any other run?

Many thanks for your help,

Pablo
___


Hello Pablo,

you can keep the log, tuc and pdf file of every run with the --keeplog, 
--keeptuc and --keeppdf options (type "context --help --expert" to know 
about the file naming).


A new run is started unless:

- the maxruns number of runs has been reached

- the tuc file is identical to the one of the previous run

Massi
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[NTG-context] Re: conversion from realpage to pagenumber

[mf]

Thank you Wolfgang,

but my problem is getting back the page of the document starting from a 
"realpage" value picked from structures.registers.collected in the .tuc 
file.


Anyway, looking at the .tuc file produced by your example, I found that 
structures.pages.collected has all the information I need to reconstruct 
the printed page number.


Here's an excerpt of the .tuc file:

utilitydata.structures.pages.collected={
 {
  ["block"]="frontpart",
  ["number"]=1,
  ["numberdata"]=1,
  ["prefixdata"]=2,
  ["state"]="start",
 },
 {
  ["block"]="frontpart",
  ["number"]=2,
  ["numberdata"]=1,
  ["prefixdata"]=2,
  ["state"]="start",
 },
...

 {
  ["block"]="bodypart",
  ["number"]=1,
  ["numberdata"]=1,
  ["prefixdata"]=2,
  ["state"]="start",
 },
 {
  ["block"]="bodypart",
  ["number"]=2,
  ["numberdata"]=1,
  ["prefixdata"]=2,
  ["state"]="start",
 },
...

So your answer was not the solution, but it's been the way to the solution.

Thank you again,

Massi


Il 12/01/24 12:02, Wolfgang Schuster ha scritto:

mf schrieb am 12.01.2024 um 10:18:

Hello list,

how do I convert the realpage number to a page number?

Suppose you have a document with a frontmatter of 20 pages in roman 
numerals, followed by the main text starting from page 1 in arabic 
numerals.


So the twelfth page is 'XII', while the twenty-second is '2'.

How do I get 'XII' from 12 and '2' from 22?


\defineconversionset
  [frontpart:pagenumber] [] [romannumerals]

\setuppagenumber
  [way=byblock]

% Alternative method for "way=byblock" when you have an appendix where
% the pagenumber of the bodypart continues rather than being reset
%
% \startsectionblockenvironment[bodypart]
%   \resetuserpagenumber
% \stopsectionblockenvironment

\starttext

\startfrontmatter
\dorecurse{20}{\samplefile{lorem}\page}
\stopfrontmatter

\startbodymatter
\dorecurse{20}{\samplefile{lorem}\page}
\stopbodymatter

\stoptext

Wolfgang


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[NTG-context] Re: conversion from realpage to pagenumber

[mf]

Il 12/01/24 10:39, Henning Hraban Ramm ha scritto:

Am 12.01.24 um 10:18 schrieb mf:

Hello list,

how do I convert the realpage number to a page number?

Suppose you have a document with a frontmatter of 20 pages in roman 
numerals, followed by the main text starting from page 1 in arabic 
numerals.


So the twelfth page is 'XII', while the twenty-second is '2'.

How do I get 'XII' from 12 and '2' from 22?


try \realpagenumber



The right one would be \userpagenumber, but it works only with the 
current page.


The code for registers does that translation -- from an arbitrary 
realpage of your document to the corresponding user page number, with 
the right formatting -- but I could not find the code that does that in 
strc-reg.* source files.


Massi
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[NTG-context] conversion from realpage to pagenumber

[mf]

Hello list,

how do I convert the realpage number to a page number?

Suppose you have a document with a frontmatter of 20 pages in roman 
numerals, followed by the main text starting from page 1 in arabic numerals.


So the twelfth page is 'XII', while the twenty-second is '2'.

How do I get 'XII' from 12 and '2' from 22?

Massi
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Re: [NTG-context] Software upgrade for ntg and contextgarden server 6 April

[mf via ntg-context]

Hello,

the github repo at https://github.com/contextgarden/context-mirror
is not updated since March 20th.

I don't know whether it's related to the server update, but maybe you know.

BTW thank you Taco, Jules and Robbert for your work.

Massi

Il 11/04/23 22:42, Taco Hoekwater via ntg-context ha scritto:

Hi,

So … the server now runs Ubuntu 22.04. Jay!

This was a much harder upgrade though. Various things were wrong, and are 
likely still a bit wrong in places. Robbert had to rescue the network 
configuration that went missing completely after the upgrade (requiring a trip 
to the data center). Various packages have been discontinued by our linux 
distribution, including the version of the mailing list software that we use 
(so that had to be installed manually). The new version of php is much stricter 
than the old version (so some website hacks were also needed). Et cetera. It 
has been a “process” ...

The basic functionality appears to be back online, although the web interface 
to the mailing lists does not work yet (we will try to fix that tomorrow). But 
there are likely to be small problems with other services still. Please *do* 
let me know if you notice something odd!

In any case, today was the last of the big software update procedures (at least 
for the next year or so).

Best wishes,
Taco and Jules and Robbert


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Re: [NTG-context] \setupparagraphs - can they run over two pages?

[mf via ntg-context]

I would try \setuptabulate, \starttabulate ... \stoptabulate.

It has some limitations (though Hans added some features recently), but 
it should work.


Massi

Il 24/02/23 06:41, jbf via ntg-context ha scritto:

I have the following setup for side-by-side paras.

\defineparagraphs[Two][n=2]

\setupparagraphs[Two][1][width=.1\textwidth,style=\bfx,align=tolerant]

\setupparagraphs[Two][2][width=.9\textwidth,style=normal,align=tolerant]

My difficulty is that while there is only ever just a couple of numbers 
in the left-hand 'column', the right-hand 'column' may have several 
lengthy paragraphs. If I have one relatively short \startTwo followed by 
one that is much longer, it will be forced to start on the next page, 
leaving too much empty space on the previous page.


It is probable that getting this environment to split across pages is 
not possible. I can try very different approaches (columns, tables) to 
solve my problem, but I thought I would at least ask first.


Julian


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Re: [NTG-context] Can ConTeXt display a simple itemized list as a comma-separated list?

[mf via ntg-context]

\setupitemgroup
[fooditems]
[each]
[none,text]
[textseparator={,}]

Comma is used to separate options; if you don't use braces, it means 
that the textseparator is set to the empty string.


Massi

Il 27/02/23 12:33, Jan-Erik Hägglöf via ntg-context ha scritto:

I tested the code and the separator didn’t show up

\mainlanguage[sv]

\setupbodyfont[12pt]

\defineitemgroup
   [fooditems]

\setupitemgroup
   [fooditems]
   [each]
   [none,text]
   [textseparator=,]

\starttext

\startfooditems
     \item fish
     \item eggs
     \item milk
\stopfooditems

\stoptext




26 feb. 2023 kl. 11:55 skrev Hans Hagen via ntg-context 
mailto:ntg-context@ntg.nl>>:


On 2/25/2023 5:01 PM, Joel via ntg-context wrote:

I have a list like this:
\startitemize[1]
\item fish
\item eggs
\item milk
\stopitemize
Is there any command in ConTeXt to make this display the items as a 
comma-separated list, like this:

fish, eggs, milk
Or a semi-colon-separated list?
fish; eggs; milk

In the next update you can set a textseparator.

\starttext

\startitemize[none,text][textseparator=;]
   \item fish
   \item eggs
   \item milk
\stopitemize

\defineitemgroup
 [fooditems]

\setupitemgroup
 [fooditems]
 [each]
 [none,text]
 [textseparator=;]

\blank[2*line]

\startfooditems
   \item fish
   \item eggs
   \item milk
\stopfooditems

\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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Re: [NTG-context] bottlenecks

[mf via ntg-context]

Il 18/12/22 14:49, Hans Hagen via ntg-context ha scritto:

On 12/18/2022 2:14 PM, mf via ntg-context wrote:

> ...

So we gained a lot in the meantime.

mkiv lua stats  > loaded fonts: 27 files: lmmono10-regular.otf, 
texgyrepagella-math.otf, dejavusansmono.ttf, gfsneohellenic.otf, 
firasans-bolditalic.otf, firasans-regular.otf, 
firasans-regularitalic.otf, firasanscondensed-bold.otf, 
firasanscondensed-regular.otf, garamondpremrpro-bdit.otf, 
garamondpremrpro-med.otf, garamondpremrpro-medcapt.otf, 
garamondpremrpro-meddisp.otf, garamondpremrpro-medit.otf, 
garamondpremrpro-meditcapt.otf, garamondpremrpro-medsubh.otf, 
garamondpremrpro-smbdit.otf, myriadpro-bold.otf, 
myriadpro-boldcond.otf, myriadpro-boldcondit.otf, myriadpro-cond.otf, 
myriadpro-condit.otf, myriadpro-it.otf, myriadpro-regular.otf, 
myriadpro-semiboldit.otf, quivira.otf, sileot.ttf
mkiv lua stats  > font engine: otf 3.131, afm 1.513, tfm 1.000, 533 
instances, 501 shared in backend, 6 common vectors, 495 common 
hashes, load time 0.196 seconds

How does that report with compact font mode?


mkiv lua stats  > resource resolver: loadtime 0.005 seconds, 0 scans 
with scantime 0.000 seconds, 0 shared scans, 107 found files, scanned 
paths: 
mkiv lua stats  > stored bytecode data: 507 modules (0.285 sec), 106 
tables (0.017 sec), 613 chunks (0.302 sec)
mkiv lua stats  > traced context: maxstack: 1923, freed: 246, 
unreachable: 1677

mkiv lua stats  > cleaned up reserved nodes: 76 nodes, 9 lists of 504
mkiv lua stats  > node memory usage: 1684 attribute, 110 fontspec, 419 
glue, 87 gluespec, 3 kern, 647 mathspec, 4 penalty, 2 temp, 591 whatsit
mkiv lua stats  > node list callback tasks: 13 unique task lists, 17 
instances (re)created, 325895 calls

mkiv lua stats  > h-node processing time: 10.654 seconds including kernel
mkiv lua stats  > attribute processing time: 2.810 seconds front- and 
backend

mkiv lua stats  > driver time: 11.714 seconds
mkiv lua stats  > used backend: pdf
mkiv lua stats  > jobdata time: 0.810 seconds saving, 0.194 seconds loading
mkiv lua stats  > callbacks: file: 5439, saved: 644924, direct: 1386, 
function: 534140, value: 1033, message: 0, bytecode: 613, late 0, total: 
1187535 (1151 per page)

mkiv lua stats  > randomizer: resumed with value 0.58701179146283
mkiv lua stats  > v-node processing time: 1.480 seconds
mkiv lua stats  > loaded patterns: en::1 it::66, load time: 0.000
mkiv lua stats  > xml load time: 0.444 seconds, 1 files, 1 converted
mkiv lua stats  > lxml preparation time: 26.359 seconds, 47936 nodes, 
24702 lpath calls, 24331 cached calls

mkiv lua stats  > interactive elements: 9327 references, 12951 destinations
mkiv lua stats  > margin data: 6 entries, 0 pending
mkiv lua stats  > loaded fonts: 27 files: lmmono10-regular.otf, 
texgyrepagella-math.otf, dejavusansmono.ttf, gfsneohellenic.otf, 
firasans-bolditalic.otf, firasans-regular.otf, 
firasans-regularitalic.otf, firasanscondensed-bold.otf, 
firasanscondensed-regular.otf, garamondpremrpro-bdit.otf, 
garamondpremrpro-med.otf, garamondpremrpro-medcapt.otf, 
garamondpremrpro-meddisp.otf, garamondpremrpro-medit.otf, 
garamondpremrpro-meditcapt.otf, garamondpremrpro-medsubh.otf, 
garamondpremrpro-smbdit.otf, myriadpro-bold.otf, myriadpro-boldcond.otf, 
myriadpro-boldcondit.otf, myriadpro-cond.otf, myriadpro-condit.otf, 
myriadpro-it.otf, myriadpro-regular.otf, myriadpro-semiboldit.otf, 
quivira.otf, sileot.ttf
mkiv lua stats  > font engine: otf 3.131, afm 1.513, tfm 1.000, 46 
instances, 16 shared in backend, 4 common vectors, 12 common hashes, 
load time 0.148 seconds

mkiv lua stats  > text directions: 5.911 seconds
mkiv lua stats  > metapost: 1.180 seconds, loading: 0.083, execution: 
1.109, n: 1039, average: 0.002, instances: 2, luacalls: 46885 (file: 
34713, text: 0, script: 5932, log: 6240), memory: 8.995 M

mkiv lua stats  > math tweaking time: 0.462 seconds, 8 math goodie tables
mkiv lua stats  > math processing time: 0.211 seconds
mkiv lua stats  > pdf annotations: 9327 links (9316 unique), 0 special
mkiv lua stats  > font embedding time: 0.104 seconds, 23 fonts
mkiv lua stats  > result saved in file: v32.pdf, compresslevel 0, 
objectcompresslevel 0
mkiv lua stats  > positions: 8572 collected, 4774 deltas, 8565 shared 
partials, 305 partial entries
mkiv lua stats  > used platform: linux-64, type: unix, binary subtree: 
texmf-linux-64
mkiv lua stats  > used engine: luametatex version: 2.1004, functionality 
level: 20221214, format id: 679, compiler: gcc
mkiv lua stats  > tex properties: 740852 hash slots used of 2097152, 
93821 control sequences, approximate memory usage: 65 MB
mkiv lua stats  > lua properties: engine: lua 5.4, used memory: 338 MB, 
ctx: 266 MB, max: 415 MB, symbol mask: utf (τεχ)
mkiv lua stats  > runtime: 114.917 seconds, 1032 processed pages, 1032 
shipped pages, 8.980 pages/second


It's better, but the 

Re: [NTG-context] bottlenecks

[mf via ntg-context]

The old version is 2020.04.26 19:53, not 2020-04-22

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Re: [NTG-context] bottlenecks

[mf via ntg-context]

latest ConTeXt 2022.12.15 18:12:

mkiv lua stats  > resource resolver: loadtime 0.009 seconds, 0 scans 
with scantime 0.000 seconds, 0 shared scans, 107 found files, scanned 
paths: 


mkiv lua stats  > stored bytecode data: 507 modules (0.346 sec), 106 
tables (0.023 sec), 613 chunks (0.369 sec)
mkiv lua stats  > traced context: maxstack: 1923, freed: 246, 
unreachable: 1677

mkiv lua stats  > cleaned up reserved nodes: 76 nodes, 9 lists of 504
mkiv lua stats  > node memory usage: 1684 attribute, 419 glue, 87 
gluespec, 3 kern, 647 mathspec, 4 penalty, 2 temp, 591 whatsit
mkiv lua stats  > node list callback tasks: 13 unique task lists, 17 
instances (re)created, 325602 calls

mkiv lua stats  > h-node processing time: 10.442 seconds including kernel
mkiv lua stats  > attribute processing time: 2.783 seconds front- and 
backend

mkiv lua stats  > driver time: 11.187 seconds
mkiv lua stats  > used backend: pdf
mkiv lua stats  > jobdata time: 0.747 seconds saving, 0.195 seconds loading
mkiv lua stats  > callbacks: file: 5438, saved: 644352, direct: 1374, 
function: 540269, value: 1027, message: 0, bytecode: 613, late 0, total: 
1193073 (1163 per page)

mkiv lua stats  > randomizer: resumed with value 0.58701179146283
mkiv lua stats  > v-node processing time: 1.955 seconds
mkiv lua stats  > loaded patterns: en::1 it::66, load time: 0.000
mkiv lua stats  > xml load time: 0.416 seconds, 1 files, 1 converted
mkiv lua stats  > lxml preparation time: 29.478 seconds, 47936 nodes, 
24702 lpath calls, 24331 cached calls

mkiv lua stats  > interactive elements: 9336 references, 12951 destinations
mkiv lua stats  > margin data: 6 entries, 0 pending
mkiv lua stats  > loaded fonts: 27 files: lmmono10-regular.otf, 
texgyrepagella-math.otf, dejavusansmono.ttf, gfsneohellenic.otf, 
firasans-bolditalic.otf, firasans-regular.otf, 
firasans-regularitalic.otf, firasanscondensed-bold.otf, 
firasanscondensed-regular.otf, garamondpremrpro-bdit.otf, 
garamondpremrpro-med.otf, garamondpremrpro-medcapt.otf, 
garamondpremrpro-meddisp.otf, garamondpremrpro-medit.otf, 
garamondpremrpro-meditcapt.otf, garamondpremrpro-medsubh.otf, 
garamondpremrpro-smbdit.otf, myriadpro-bold.otf, myriadpro-boldcond.otf, 
myriadpro-boldcondit.otf, myriadpro-cond.otf, myriadpro-condit.otf, 
myriadpro-it.otf, myriadpro-regular.otf, myriadpro-semiboldit.otf, 
quivira.otf, sileot.ttf
mkiv lua stats  > font engine: otf 3.131, afm 1.513, tfm 1.000, 533 
instances, 501 shared in backend, 6 common vectors, 495 common hashes, 
load time 0.196 seconds

mkiv lua stats  > text directions: 5.754 seconds
mkiv lua stats  > metapost: 1.182 seconds, loading: 0.129, execution: 
1.112, n: 1033, average: 0.002, instances: 2, luacalls: 46777 (file: 
34671, text: 0, script: 5902, log: 6204), memory: 8.992 M

mkiv lua stats  > math tweaking time: 5.640 seconds, 126 math goodie tables
mkiv lua stats  > math processing time: 0.251 seconds
mkiv lua stats  > pdf annotations: 9336 links (9326 unique), 0 special
mkiv lua stats  > font embedding time: 0.049 seconds, 23 fonts
mkiv lua stats  > result saved in file: v32.pdf, compresslevel 0, 
objectcompresslevel 0
mkiv lua stats  > positions: 8563 collected, 4775 deltas, 8556 shared 
partials, 304 partial entries
mkiv lua stats  > used platform: linux-64, type: unix, binary subtree: 
texmf-linux-64
mkiv lua stats  > used engine: luametatex version: 2.1004, functionality 
level: 20221214, format id: 679, compiler: gcc
mkiv lua stats  > tex properties: 740852 hash slots used of 2097152, 
94301 control sequences, approximate memory usage: 385 MB
mkiv lua stats  > lua properties: engine: lua 5.4, used memory: 1527 MB, 
ctx: 1436 MB, max: 1585 MB, symbol mask: utf (τεχ)
mkiv lua stats  > runtime: 130.080 seconds, 1026 processed pages, 1026 
shipped pages, 7.887 pages/second


system  | total runtime: 130.269 seconds of 130.342 seconds


ConTeXt 2020-04-22:

mkiv lua stats  > resource resolver: loadtime 0.005 seconds, 0 scans 
with scantime 0.000 seconds, 0 shared scans, 124 found files, scanned 
paths: 
mkiv lua stats  > stored bytecode data: 468 modules (0.349 sec), 93 
tables (0.030 sec), 561 chunks (0.378 sec)
mkiv lua stats  > traced context: maxstack: 2799, freed: 246, 
unreachable: 2553

mkiv lua stats  > cleaned up reserved nodes: 61 nodes, 11 lists of 512
mkiv lua stats  > node memory usage: 200320 attribute, 23928 
attribute_list, 419 glue, 368 glue_spec, 27234 glyph, 3 kern, 4 penalty, 
2 temp, 1159 whatsit
mkiv lua stats  > node list callback tasks: 8 unique task lists, 14 
instances (re)created, 236679 calls

mkiv lua stats  > h-node processing time: 13.188 seconds including kernel
mkiv lua stats  > attribute processing time: 5.444 seconds front- and 
backend

mkiv lua stats  > driver time: 12.650 seconds
mkiv lua stats  > used backend: lmtx version 0.10, pdf (backend for 
directly generating pdf output)

mkiv lua stats  > jobdata time: 2.286 seconds saving, 0.297 seconds loading
mkiv lua stats  > callbacks: internal: 

Re: [NTG-context] Xml filtering in Lua

[mf via ntg-context]

This works:

local metadata = xml.filter (t, '../../topics/topic[@t:id=="' .. ch_id 
.. '"]')


also this:

local lpath = string.format('../../topics/topic[@t:id=="%s"]', ch_id)

local metadata = xml.filter (t, lpath)


It looks like xml.filter supports only 2 arguments (see lxml-tex.lua), 
and so it doesn't let you use string formatting patterns like the 
"context" command does.


You can write:

context('the value of @t:id is "%s"', ch_id)

but you can't write:

xml.filter (t, '../../topics/topic[@t:id=="%s"]', ch_id)


Best wishes,

Massi

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Re: [NTG-context] Xml filtering in Lua

[mf via ntg-context]

Il 16/11/22 18:33, Thomas A. Schmitz via ntg-context ha scritto:

\startbuffer[test]

   
  
This is the first test
22/11/16
  
  
This is the second test
22/11/17
  
   
   
  

  This will be the content of the first chapter.

  
  
 
  This will be the content of the second chapter.
 
  
   

\stopbuffer

\startxmlsetups xml:testsetups
\xmlsetsetup{#1}{*}{-}
\xmlsetsetup{#1}{document|chapters|chapter|content|emph}{xml:*}
\stopxmlsetups

\xmlregistersetup{xml:testsetups}

\startxmlsetups xml:document
\xmlflush{#1}
\stopxmlsetups

\startxmlsetups xml:chapters
\xmlflush{#1}
\stopxmlsetups

\startxmlsetups xml:chapter
\xmlfunction {#1} {chapter}
 \xmlflush {#1} 
\stopxmlsetups

\startxmlsetups xml:chapter:content
\xmltext {#1} {content}
\stopxmlsetups

\startxmlsetups xml:emph
   {\em \xmlflush {#1}}
\stopxmlsetups

\startluacode
function xml.functions.chapter (t)
 local ch_id = t.at.ch:id



local ch_id = t.at["ch:id"]



local metadata = xml.filter (t, 
'../../topics/topic[@t:id=="%s"]', ch_id)
print (inspect(metadata))
lxml.command(t, ".", "xml:chapter:content")
context.par ()
context (ch_id)
context.par ()
end
\stopluacode


Best wishes,

Massi

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Re: [NTG-context] Can I just put a footnote without marking in the main text?

[mf via ntg-context]

Is this what you mean?

\starttext
Hello\footnotetext{Footnote without mark}.
\stoptext

Kind regards,
Massi

Il 18/05/22 07:55, Zhichu Chen via ntg-context ha scritto:

Hi everybody,


After some attempts to put footnotes in a mixed 1&2 columns layout, I 
decide to put marks in the one-column environment and flush them when 
entering the two-column environment.



The code is ugly but the result is acceptable. Except that the invisible 
footnote marks do generate something in the main text, so there's a 
blank line for each footnote.



Here's an MWE:


=

\definenote[address]
\setupnote[address][rule=off,location=text]



\definenote[putjustmark]
\setupnote[putjustmark][location=none]
\setupnotation[putjustmark][numberconversion=set 2]


\definenote[putjustnote]%[footnote] % if footnotes need to be grouped, 
uncomment the second argument and the line after \the\titlefootnotes

\setupnote[putjustnote][textcommand=\gobbleoneargument]
\setupnotation[putjustnote][numberconversion=set 2]


\newtoks\titlefootnotes


\def\thanks#1{\putjustmark{#1}\appendtoks \putjustnote{#1} \to 
\titlefootnotes}
\def\email#1{\putjustmark{#1}\appendtoks \putjustnote{#1} \to 
\titlefootnotes}



\appendtoks
   \setcounter[footnote][0] % this looks stupid because it has no effect
   %\setupnotation[footnote][numberconversion=numerals]
\to \titlefootnotes

\definenamespace
    [addr]
    [type=module,
     name=address,
     command=yes,
     setup=list,
     parent=addr,
   ]

\define[1]\useaddress
     {\setnotetext[address][#1]{\namedaddressparameter{#1}{name}}}


\starttext



\defineaddress[fst][name={Name of Institute or Affiliation, City, Country}]
\defineaddress[snd][name={Name of Secondary Institute or Affiliation, 
City, Country}]


\processcommacommand[fst,snd]\useaddress


The Title\thanks{Work supported by somebody.}

Me\email{myemail@some.where}\high{,}\note[address][fst]\high{,}\note[address][snd] 




\placenotes[address]

\blank[medium]

\startcolumns


\the\titlefootnotes

%\setcounter[footnote][0] % why it's necessary to set the counter 
outside the token if I define [putjustnote] as [footnote]?



test\footnote{test}

\input knuth



\stopcolumns

\stoptext

=

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Re: [NTG-context] ignore not closed tags in XML input

[mf via ntg-context]

See HTML-tidy,

https://www.html-tidy.org/

it could help you pre-processing your HTML files.

Massi

Il 16/05/22 17:08, Pablo Rodriguez via ntg-context ha scritto:

Dear list,

I would like to feed
https://seumasjeltzz.github.io/LinguaeGraecaePerSeIllustrata/001.html as
XML input for ConTeXt.

The problem is that (as many other XML files that I haven’t generated
myself) some  and  tags aren’t closed, such as in:

   
   https://fonts/css?greek; rel="stylesheet">
   

So, all that I get is the following message:

   invalid xml file - parsed text

Unsuccessfully I have tried the following:

   \xmlsetsetup{#1}{html/head/(meta|link)}{-}

Is there no way to make ConTeXt more tolerant, so that it is able to
ignore those tags?

Many thanks for your help,

Pablo

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Re: [NTG-context] upload

[mf via ntg-context]

I'm downloading it and I see a lot of mkii files and even some Ruby files.

It looks like some old material got into the update. Is everything right?

Massi

Il 09/05/22 17:41, Hans Hagen via ntg-context ha scritto:

Hi,

I uploaded a new version of lmtx (also because some users have to test 
some new metapost functionality). In the next upload metafun will use 
'double' mode (and scaledfun will be the traditional one). The advantage 
is less dager for overflows and in the meantime running in double mode 
is often also faster.



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[NTG-context] Wiki update: create a .vsix extension package for VisualStudio Code (or VSCodium)

[mf via ntg-context]

Hello list,

I just added some instructions to the WIKI to build an extension file 
for VSCode, starting from the code you find in the LMTX installation at


tex/texmf-context/context/data/vscode/extensions/context

You find them at

https://wiki.contextgarden.net/VSCode

Massi
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Re: [NTG-context] modify kern between two glyphs

[mf via ntg-context]

There's a problem with oldstyle glyphs, because they have different 
codes inside a font.


I used fontforge to find the "four.oldstyle" glyph, whose code is 0xf734.
But then I discovered that the 'four.oldstyle' key works the same in the 
lua table.


This is the updated MWE, suitable for oldstyle glyphs too.

--
\mainlanguage[it]

% modified from http://www.pragma-ade.com/context/latest/cont-tst.zip
% file: doc/context/tests/mkiv/fonts/extensions-001.tex

\startluacode
fonts.handlers.otf.addfeature {
name = "ktest",
type = "kern",
data = {
[ '’' ] = {
  [ '4' ] = -100,
  [ 0xf734 ] = -150, -- four.oldstyle code
  -- [ 'four.oldstyle' ] = -150, -- this is the same as the 
previous line

},
}
}
\stopluacode
\definefontfeature[ktest][ktest=yes]
\definefontfeature[onum][onum=yes]

\starttext
Default: «Questo è successo nel ’48».

Desired: «Questo è successo nel ’\kern-.1em 48».

Solved: \feature[+][ktest]«Questo è successo nel ’48».

Onum: \feature[+][onum]«Questo è successo nel ’48».

\stoptext
--

Massi
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Re: [NTG-context] modify kern between two glyphs

[mf via ntg-context]

Il 05/04/22 13:54, Hans Hagen via ntg-context ha scritto:

On 4/5/2022 1:45 PM, mf via ntg-context wrote:

It's defined in typo-fkr.lua, but I can't understand what parameters 
to pass and whether it's the right macro. It looks like it's not.
look at the extension examples in the test suite: you can define a kern 
pair positioning feature than you enable for just that font




Thanks Hans, here's the working MWE:

---
\mainlanguage[it]

% from http://www.pragma-ade.com/context/latest/cont-tst.zip
% file doc/context/tests/mkiv/fonts/extensions-001.tex
\startluacode
fonts.handlers.otf.addfeature {
name = "ktest",
type = "kern",
data = {
[ '’' ] = { [ '4' ] = -100 },
}
}
\stopluacode
\definefontfeature[ktest][ktest=yes]

\starttext

Default: «Questo è successo nel ’48».

Desired: «Questo è successo nel ’\kern-.1em 48».

Solved: \feature[+][ktest]«Questo è successo nel ’48».

\stoptext
--

Massi
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Re: [NTG-context] modify kern between two glyphs

[mf via ntg-context]

Il 05/04/22 13:15, Thomas A. Schmitz via ntg-context ha scritto:




On 5. Apr 2022, at 13:02, mf via ntg-context  wrote:

Is it possible to solve it globally and only for a single font?

Thanks,
Massi


Have you looked at chapter 5.4 “Goodies” of fonts-mkiv.pdf? That should get you 
started.


Thanks Thomas,
there seems to be nothing for that in the "Goodies" chapter.

I'd already found \setextrafontkerns at "8.12 Extra font kerns" of the 
same manual.
It's defined in typo-fkr.lua, but I can't understand what parameters to 
pass and whether it's the right macro. It looks like it's not.


I'm expecting there's a lua font table with glyph pairs kerning to update.

Massi
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[NTG-context] modify kern between two glyphs

[mf via ntg-context]

Hello list,

I need to modify the kern between two glyphs.

This is a MWE where the problem is solved manually:

--
\mainlanguage[it]
\starttext

Default: «Questo è successo nel ’48».

Desired: «Questo è successo nel ’\kern-.1em 48».

\stoptext
--

Is it possible to solve it globally and only for a single font?

Thanks,
Massi
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Re: [NTG-context] embedding tex and lua code in

[mf via ntg-context]

The attached MWE shows how to:

- embed tex code in  or <script 
</tt><tt>type="text/vnd.lmtx"> HTML elements to be run by ConTeXt
</tt><pre style="margin: 0em;">

- embed lua code in <script type="text/x-lua"> elements to be run by ConTeXt

- redefine xmlsetups from the HTML document itself

Massi

Il 22/03/22 17:07, mf via ntg-context ha scritto:
</pre><blockquote style="border-left: #EE solid 0.2em; margin: 0em; padding-left: 0.85em"><pre style="margin: 0em;">
I've added a <script type="text/x-lua"> in the <head> element (BTW,
"text/x-lua" is the mimetype proposed by freedesktop.org for lua scripts.

That element is managed by this code:

--
   if mimetype and mimetype == "text/x-lua" then
     local code = xml.text(s)
     context( "\\startluacode " .. code .. " \\stopluacode" )
   end
--

s is the table representing the script element.
That works, but it has a problem with one-line comments:

--
   <script type="text/x-lua">
     -- comment
     context.setuppapersize{ "A7" }
   
--

The code above is considered a long comment as if it were written as
--
   
     -- comment   context.setuppapersize{ "A7" }
   
--

so the context.setuppapersize function call is ignored.

The workaround is:
--
   
     --[[ comment --]]
     context.setuppapersize{ "A7" }
   
--

A lua analogous of \xmlcontext (line-wise) would be great.




Hans prompted me to use xml.content() instead of xml.text(). The first 
one preserves newlines, so short comments don't extend to the next line.




*  *  *

Here's another problem related to space in  elements.
This code:

--
   <script type="text/vnd.context">
     % default setup for paragraphs
     \startxmlsetups myHtml:p
   \dontleavehmode\red\xmlflush{#1}\par
     \stopxmlsetups

     % default setup for italic inlines
     \startxmlsetups myHtml:i
   {\it\blue\xmlflush{#1}}% <-- problem here
     \stopxmlsetups
   
--

adds a space after an  element.
A solution could be this:

--
   \startxmlsetups myHtml:i
     {\it\blue\xmlflush{#1}}\stopxmlsetups
--

I prefer this one:

--
   \startxmlsetups myHtml:i
     {\it\blue\xmlflush{#1}}\relax
   \stopxmlsetups
--

You need to end the line with a macro eating up all the trailing spaces 
(newlines included).


Massi

Il 22/03/22 15:23, mf via ntg-context ha scritto:

I found the solution I was looking for. The command to run is still

context --environment=nested-xmlsetup.tex --forcexml 
nested-xmlsetup.xhtml


In the  element there's some tex code, which redefines the 
</tt><tt>xmlsetups for <p> and <i> elements, coloring the first ones in red and 
</tt><tt>the second ones in blue.
</tt><pre style="margin: 0em;">

The key command is

\xmlsetsetup{\xmldocument}{p|i}{myHtml:*}

</pre><tt>where \xmldocument instead of #1 applies the myHtml:* setups to the 
</tt><tt>whole XHTML document and not only to the <script> element identified 
</tt><tt>by #1.
</tt><pre style="margin: 0em;">

</pre><tt>I tried also this, to prevent redefining the setups of <html>, <head>, 
</tt><tt><script> elements:
</tt><pre style="margin: 0em;">

\xmlsetsetup{\xmlfirst{\xmldocument}{body}}{p|i}{myHtml:*}

</pre><tt>but it doesn't work, since \xmldocument seems to be the actual 
</tt><tt>document instead of an id pointing to its root element.
</tt><pre style="margin: 0em;">

Massi

Il 10/03/22 17:52, Hans Hagen ha scritto:
</pre><blockquote style="border-left: #EE solid 0.2em; margin: 0em; padding-left: 0.85em"><pre style="margin: 0em;">
On 3/10/2022 4:59 PM, mf via ntg-context wrote:
</pre><blockquote style="border-left: #EE solid 0.2em; margin: 0em; padding-left: 0.85em"><pre style="margin: 0em;">
Hello,
</pre><tt>I'm trying to add new templates (xmlsetups) from the XML document 
</tt><tt>itself.
</tt><pre style="margin: 0em;">

See the attached MWE.

- the XML document is a simple XHTML file

</pre><tt>- in the "head" element there's a "script" element with the "type" 
</tt><tt>attribute set to "text/vnd.context",

Re: [NTG-context] redefining xmlsetups inside a XML document

[mf via ntg-context]

I've added a  in the <head> element (BTW,
"text/x-lua" is the mimetype proposed by freedesktop.org for lua scripts.

That element is managed by this code:

--
  if mimetype and mimetype == "text/x-lua" then
local code = xml.text(s)
context( "\\startluacode " .. code .. " \\stopluacode" )
  end
--

s is the table representing the script element.
That works, but it has a problem with one-line comments:

--
  <script type="text/x-lua">
-- comment
context.setuppapersize{ "A7" }
  
--

The code above is considered a long comment as if it were written as
--
  
-- comment   context.setuppapersize{ "A7" }
  
--

so the context.setuppapersize function call is ignored.

The workaround is:
--
  
--[[ comment --]]
context.setuppapersize{ "A7" }
  
--

A lua analogous of \xmlcontext (line-wise) would be great.

*  *  *

Here's another problem related to space in  elements.
This code:

--
  <script type="text/vnd.context">
% default setup for paragraphs
\startxmlsetups myHtml:p
  \dontleavehmode\red\xmlflush{#1}\par
\stopxmlsetups

% default setup for italic inlines
\startxmlsetups myHtml:i
  {\it\blue\xmlflush{#1}}% <-- problem here
\stopxmlsetups
  
--

adds a space after an  element.
A solution could be this:

--
  \startxmlsetups myHtml:i
{\it\blue\xmlflush{#1}}\stopxmlsetups
--

I prefer this one:

--
  \startxmlsetups myHtml:i
{\it\blue\xmlflush{#1}}\relax
  \stopxmlsetups
--

You need to end the line with a macro eating up all the trailing spaces 
(newlines included).


Massi

Il 22/03/22 15:23, mf via ntg-context ha scritto:

I found the solution I was looking for. The command to run is still

context --environment=nested-xmlsetup.tex --forcexml nested-xmlsetup.xhtml

In the  element there's some tex code, which redefines the 
</tt><tt>xmlsetups for <p> and <i> elements, coloring the first ones in red and 
</tt><tt>the second ones in blue.
</tt><pre style="margin: 0em;">

The key command is

\xmlsetsetup{\xmldocument}{p|i}{myHtml:*}

</pre><tt>where \xmldocument instead of #1 applies the myHtml:* setups to the 
</tt><tt>whole XHTML document and not only to the <script> element identified by #1.
</tt><pre style="margin: 0em;">

</pre><tt>I tried also this, to prevent redefining the setups of <html>, <head>, 
</tt><tt><script> elements:
</tt><pre style="margin: 0em;">

\xmlsetsetup{\xmlfirst{\xmldocument}{body}}{p|i}{myHtml:*}

</pre><tt>but it doesn't work, since \xmldocument seems to be the actual document 
</tt><tt>instead of an id pointing to its root element.
</tt><pre style="margin: 0em;">

Massi

Il 10/03/22 17:52, Hans Hagen ha scritto:
</pre><blockquote style="border-left: #EE solid 0.2em; margin: 0em; padding-left: 0.85em"><pre style="margin: 0em;">
On 3/10/2022 4:59 PM, mf via ntg-context wrote:
</pre><blockquote style="border-left: #EE solid 0.2em; margin: 0em; padding-left: 0.85em"><pre style="margin: 0em;">
Hello,
</pre><tt>I'm trying to add new templates (xmlsetups) from the XML document 
</tt><tt>itself.
</tt><pre style="margin: 0em;">

See the attached MWE.

- the XML document is a simple XHTML file

</pre><tt>- in the "head" element there's a "script" element with the "type" 
</tt><tt>attribute set to "text/vnd.context", whose contents are then passed 
</tt><tt>to \xmlcontext
</tt><pre style="margin: 0em;">

</pre><tt>- the "body" element has a "data-xmlsetups" attribute whose value 
</tt><tt>should tell which xmlsetups is to be applied on the body contents 
</tt><tt>(it's defined in the "script" element above)
</tt><pre style="margin: 0em;">

</pre><tt>If it worked, the resulting PDF should show the body element, 
</tt><tt>followed by a "Hello world!" paragraph written in red.
</tt><tt>But it does not work, because there's something I'm missing in the 
</tt><tt>redefinition and application of xmlsetups.
</tt><pre style="margin: 0em;"

Re: [NTG-context] redefining xmlsetups inside a XML document

[mf via ntg-context]

I found the solution I was looking for. The command to run is still

context --environment=nested-xmlsetup.tex --forcexml nested-xmlsetup.xhtml

In the  element there's some tex code, which redefines the 
</tt><tt>xmlsetups for <p> and <i> elements, coloring the first ones in red and 
</tt><tt>the second ones in blue.
</tt><pre style="margin: 0em;">

The key command is

\xmlsetsetup{\xmldocument}{p|i}{myHtml:*}

</pre><tt>where \xmldocument instead of #1 applies the myHtml:* setups to the 
</tt><tt>whole XHTML document and not only to the <script> element identified by #1.
</tt><pre style="margin: 0em;">

</pre><tt>I tried also this, to prevent redefining the setups of <html>, <head>, 
</tt><tt><script> elements:
</tt><pre style="margin: 0em;">

\xmlsetsetup{\xmlfirst{\xmldocument}{body}}{p|i}{myHtml:*}

</pre><tt>but it doesn't work, since \xmldocument seems to be the actual document 
</tt><tt>instead of an id pointing to its root element.
</tt><pre style="margin: 0em;">

Massi

Il 10/03/22 17:52, Hans Hagen ha scritto:
</pre><blockquote style="border-left: #EE solid 0.2em; margin: 0em; padding-left: 0.85em"><pre style="margin: 0em;">
On 3/10/2022 4:59 PM, mf via ntg-context wrote:
</pre><blockquote style="border-left: #EE solid 0.2em; margin: 0em; padding-left: 0.85em"><pre style="margin: 0em;">
Hello,
I'm trying to add new templates (xmlsetups) from the XML document itself.

See the attached MWE.

- the XML document is a simple XHTML file

</pre><tt>- in the "head" element there's a "script" element with the "type" 
</tt><tt>attribute set to "text/vnd.context", whose contents are then passed to 
</tt><tt>\xmlcontext
</tt><pre style="margin: 0em;">

</pre><tt>- the "body" element has a "data-xmlsetups" attribute whose value 
</tt><tt>should tell which xmlsetups is to be applied on the body contents 
</tt><tt>(it's defined in the "script" element above)
</tt><pre style="margin: 0em;">

</pre><tt>If it worked, the resulting PDF should show the body element, followed 
</tt><tt>by a "Hello world!" paragraph written in red.
</tt><tt>But it does not work, because there's something I'm missing in the 
</tt><tt>redefinition and application of xmlsetups.
</tt><pre style="margin: 0em;">

To try the MWE, type:

</pre><tt>context --environment=nested-xmlsetup.tex --forcexml 
</tt><tt>nested-xmlsetup.xhtml
</tt></blockquote><pre style="margin: 0em;">
     <script type="text/vnd.context">
   \startxmlsetups myHtml
    \xmlsetsetup{#1}{p}{myHtml:p}
    % you're missing this
    \xmlsetup{#1}{xml:process}
    % which is
    %  \xmlregistereddocumentsetups{#1}{#1}
    %  \xmlmain{#1}
   \stopxmlsetups

   \startxmlsetups myHtml:p
  \dontleavehmode\red\xmlflush{#1}\par
   \stopxmlsetups
     


nested-xmlsetup.xhtml
Description: application/xhtml
\startxmlsetups html
  \xmlsetsetup{#1}{{html|head}}{html:flush}
  \xmlsetsetup{#1}{{html head script}}{html:script:context}
  \xmlsetsetup{#1}{{html body}}{html:body}
  \xmlsetsetup{#1}{p|i}{html:*}
\stopxmlsetups

\startxmlsetups html:flush
  \xmlflush{#1}
\stopxmlsetups

\startluacode
function xml.functions.parseScript(s)
  local mimetype = s and s.at and s.at.type
  if mimetype and mimetype == "text/vnd.context" then
lxml.context(s)
  end
end
\stopluacode

\startxmlsetups html:script:context
  \xmlfunction{#1}{parseScript}
\stopxmlsetups

\startxmlsetups html:body
  \starttext
\xmlflush{#1}
  \stoptext
\stopxmlsetups

% default setup for paragraphs
\startxmlsetups html:p
  \dontleavehmode\xmlflush{#1}\par
\stopxmlsetups

% default setup for italic inlines
\startxmlsetups html:i
  {\it\xmlflush{#1}}%
\stopxmlsetups

\xmlregistersetup{html}
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[NTG-context] redefining xmlsetups inside a XML document

[mf via ntg-context]

Hello,
I'm trying to add new templates (xmlsetups) from the XML document itself.

See the attached MWE.

- the XML document is a simple XHTML file

- in the "head" element there's a "script" element with the "type" 
attribute set to "text/vnd.context", whose contents are then passed to 
\xmlcontext


- the "body" element has a "data-xmlsetups" attribute whose value should 
tell which xmlsetups is to be applied on the body contents (it's defined 
in the "script" element above)


If it worked, the resulting PDF should show the body element, followed 
by a "Hello world!" paragraph written in red.
But it does not work, because there's something I'm missing in the 
redefinition and application of xmlsetups.


To try the MWE, type:

context --environment=nested-xmlsetup.tex --forcexml nested-xmlsetup.xhtml

Massi\startxmlsetups html
  \xmlsetsetup{#1}{{html|head}}{html:flush}
  \xmlsetsetup{#1}{{html head script}}{html:script:context}
  \xmlsetsetup{#1}{{html body}}{html:body}
  \xmlsetsetup{#1}{p}{html:p}
\stopxmlsetups

\startxmlsetups html:flush
  \xmlflush{#1}
\stopxmlsetups

\startluacode
function xml.functions.parseScript(s)
  local mimetype = s and s.at and s.at.type
  if mimetype and mimetype == "text/vnd.context" then
lxml.context(s)
  end
end
function xml.functions.flushBody(b)
  local xmlsetups = b and b.at and b.at["data-xmlsetups"]
  if xmlsetups then
lxml.tobuffer(b, ".", "body")
context("\\typebuffer[body]")
context.xmlprocessbuffer("body", "body", xmlsetups)
  else
lxml.flush(b)
  end
end
\stopluacode

\startxmlsetups html:script:context
  \xmlfunction{#1}{parseScript}
\stopxmlsetups

\startxmlsetups html:body
  \starttext
\xmlfunction{#1}{flushBody}
  \stoptext
\stopxmlsetups

\startxmlsetups html:p
  \dontleavehmode\xmlflush{#1}\par
\stopxmlsetups

\xmlregistersetup{html}


nested-xmlsetup.xhtml
Description: application/xhtml
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Re: [NTG-context] definedfont vs switchtobodyfont (was "shrink inter-line space")

[mf via ntg-context]

Il 18/12/21 13:00, Wolfgang Schuster ha scritto:

\definefontfeature [tightlines] [dimensions={*,0,0}]

\starttext

\samplefile{ward}\par

\blank

\start
     \setupinterlinespace[line=5pt]
     \definedfont[Normal*default,tightlines]
     \samplefile{ward}\par
\stop

\stoptext



Thanks Wolfgang.

I tried this:

\definefontfeature [tightlines] [dimensions={*,0,0}]

\starttext

\samplefile{ward}\par

\blank

\start
\setupinterlinespace[line=5pt]
\feature[+][tightlines]
\samplefile{ward}\par
\stop

\stoptext

but it doesn't add the feature to the current font.
I understand I need a font switch.
Usually I use \switchtobodyfont. How is \definedfont different?

Massi
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Re: [NTG-context] shrink inter-line space

[mf via ntg-context]

Il 17/12/21 20:17, Wolfgang Schuster ha scritto:> \starttext
>
> \samplefile{ward}\par
>
> \blank
>
> \start \setupinterlinespace[line=12pt]
> \samplefile{ward}\par
> \stop
>
> \stoptext
Yes, but you can't say \setupinterlinespace[line=6pt] and make lines 
overlap. At a certain point baselines don't get closer any more.


--
\starttext

\samplefile{ward}\par

\blank

\start \setupinterlinespace[line=12pt]
\samplefile{ward}\par
\stop

\blank

\start \setupinterlinespace[line=6pt]
\samplefile{ward}\par
\stop

\stoptext
--

You can do something like this:

--
\starttext

\samplefile{ward}\par

\blank

\start \setupinterlinespace[line=12pt]
\samplefile{ward}\par
\stop

\blank

The Earth, as a habitat for animal life, is in old age and has a fatal 
illness.\vadjust{\kern-6pt}
Several, in fact. It would be happening whether humans had ever evolved 
or not.\vadjust{\kern-6pt}
But our presence is like the effect of an old-age patient who smokes 
many packs\vadjust{\kern-6pt}

of cigarettes per day—and we humans are the cigarettes.

\stoptext
--

but I had to insert all those \kern-6pt manually.
How can I obtain the same result automatically?
(please don't argue about the ugliness of the result ;) )

Massi
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[NTG-context] shrink inter-line space

[mf via ntg-context]

Hello list,
here's a MWE to shrink the distance between two lines:

\starttext
\samplefile{ward}\par
\blank
\bgroup
\baselineskip=0pt
\samplefile{ward}\par
\egroup
\stoptext

How can I get lines closer, even overlapping?

Massi
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Re: [NTG-context] Indentation inside \framed won't go away

[mf via ntg-context]

\definepapersize[a4-portrait][A4][A4]
\setuppapersize[a4-portrait]
\setuplayout[topspace=10mm,backspace=15mm,header=50pt,footer=50pt,textwidth=165mm,height=middle,width=middle]

\starttext

\offset[x=\dimexpr11mm\relax,y=\dimexpr23mm\relax]
{\framed[frame=on,offset=none,align=flushleft]
{% percent sign here, otherwise you get a space
Chief Vitalstatistix\\
Getafix\\
Dogmatix\\
Asterix\\
Obelix\\
}
}
\stoptext

Massi

Il 21/10/21 10:32, Ramkumar KB via ntg-context ha scritto:

Hello,

I have this nagging issue of indentation (in the 1st line) showing up 
inside \framed in spite of all the commands to skip indentation (see 
attached PDF).


It appears that *\setupindenting[no]* is not playing any role here and 
some other parameter is overriding  this.


Any tips would be appreciated.

best regards,
Ramkumar

\definepapersize[a4-portrait][A4][A4]
\setuppapersize[a4-portrait]
\setuplayout[topspace=10mm,backspace=15mm,header=50pt,footer=50pt,textwidth=165mm,height=middle,width=middle]

\starttext

\offset[x=\dimexpr11mm\relax,y=\dimexpr23mm\relax]
{\framed[frame=on,offset=none,align=flushleft]
{
% \startparagraph[align=high]
\setupindenting[no]
Chief Vitalstatistix\\
Getafix\\
Dogmatix\\
Asterix\\
Obelix\\
}
}
\stoptext


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Re: [NTG-context] SVG not rendering correctly with LMTX and conversion=mp

[mf via ntg-context]

Il 18/10/21 18:30, Hans Hagen via ntg-context ha scritto:

On 10/18/2021 6:06 PM, mf via ntg-context wrote:

Il 18/10/21 17:15, Jason Ross via ntg-context ha scritto:

The following MWE fails to render the text in the attached SVG properly:


\starttext
\externalfigure[test.svg][conversion=mp]
\stoptext


The axis labels, tick labels, and title are all incorrect. This file was
generated with Matplotlib.



If you open test.svg with Inkscape, ungroup and then save, you get a 
SVG that is typeset right with LMTX.


Looking at the differences between the two SVGs, I can see that 
Inkscape changes all the transform="translate(...)scale(...)" 
attributes into transform="matrix(...)".


Now focus on the "y = sin(x)" text.
In the attachment I modified the transform attributes of that text, 
from "translate(...)scale(...)" to "matrix(...)", taking the values 
from the version obtained from Inkscape.


Use that SVG with your MWE and you'll see "y = sin(x)" appearing in 
the right place in the PDF.


I would say the "translate(...)scale(...)" specification is not 
supported in LMTX (yet).
it is supported; i'll send you a snippet to test (as it was not really a 
minimal example)




Coming soon... (see attachment)

The problem was the order in which transformations are applied when 
multiple transformations are specified in the transform attribute, like 
in "translate(...)scale(...)...".


testsvg.tex and test.svg are the MWE and the SVG file provided by Jason 
Ross in the first post of this thread.


Massi


testsvg.pdf
Description: Adobe PDF document
\starttext
\externalfigure[test.svg][conversion=mp]
\stoptext 
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Re: [NTG-context] SVG not rendering correctly with LMTX and conversion=mp

[mf via ntg-context]

Here it's wrong. See attachment.

Massimiliano

Il 18/10/21 18:30, Hans Hagen via ntg-context ha scritto:

On 10/18/2021 6:06 PM, mf via ntg-context wrote:

Il 18/10/21 17:15, Jason Ross via ntg-context ha scritto:

The following MWE fails to render the text in the attached SVG properly:


\starttext
\externalfigure[test.svg][conversion=mp]
\stoptext


The axis labels, tick labels, and title are all incorrect. This file was
generated with Matplotlib.



If you open test.svg with Inkscape, ungroup and then save, you get a 
SVG that is typeset right with LMTX.


Looking at the differences between the two SVGs, I can see that 
Inkscape changes all the transform="translate(...)scale(...)" 
attributes into transform="matrix(...)".


Now focus on the "y = sin(x)" text.
In the attachment I modified the transform attributes of that text, 
from "translate(...)scale(...)" to "matrix(...)", taking the values 
from the version obtained from Inkscape.


Use that SVG with your MWE and you'll see "y = sin(x)" appearing in 
the right place in the PDF.


I would say the "translate(...)scale(...)" specification is not 
supported in LMTX (yet).
it is supported; i'll send you a snippet to test (as it was not really a 
minimal example)


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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ytest.pdf
Description: Adobe PDF document
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Re: [NTG-context] SVG not rendering correctly with LMTX and conversion=mp

[mf via ntg-context]

Il 18/10/21 17:15, Jason Ross via ntg-context ha scritto:

The following MWE fails to render the text in the attached SVG properly:


\starttext
\externalfigure[test.svg][conversion=mp]
\stoptext


The axis labels, tick labels, and title are all incorrect. This file was
generated with Matplotlib.



If you open test.svg with Inkscape, ungroup and then save, you get a SVG 
that is typeset right with LMTX.


Looking at the differences between the two SVGs, I can see that Inkscape 
changes all the transform="translate(...)scale(...)" attributes into 
transform="matrix(...)".


Now focus on the "y = sin(x)" text.
In the attachment I modified the transform attributes of that text, from 
"translate(...)scale(...)" to "matrix(...)", taking the values from the 
version obtained from Inkscape.


Use that SVG with your MWE and you'll see "y = sin(x)" appearing in the 
right place in the PDF.


I would say the "translate(...)scale(...)" specification is not 
supported in LMTX (yet).


Massi
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Re: [NTG-context] undefined command in current latest

[mf via ntg-context]

It looks like the argument of \getmarking is not expanded, since you get 
"\it knuth" instead of an italicized "knuth" in the headers of this MWE:


\definemarking[myheader]
\setupheadertexts[{\getmarking[myheader][last]}]
\starttext
  \dorecurse{10}{\samplefile{knuth}\marking[myheader]{\it knuth}\par}
\stoptext

context version: 2021.10.10 23:43

Massi


Il 11/10/21 09:06, Alexandre Christe via ntg-context ha scritto:
Indeed I can report similar issues with \getmarking after updating to 
the latest version of Context. Did something change regarding its 
definition / use recently?


context -version
mtx-context     | ConTeXt Process Management 1.04
mtx-context     |
mtx-context     | main context file: 
/Users/aleks/context-osx-64/tex/texmf-context/tex/context/base/mkiv/context.mkiv

mtx-context     | current version: 2021.10.08 20:18
mtx-context     | main context file: 
/Users/aleks/context-osx-64/tex/texmf-context/tex/context/base/mkxl/context.mkxl

mtx-context     | current version: 2021.10.08 20:18

Alex


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Re: [NTG-context] Addition of authortitle sorttype for bibliographies

[mf via ntg-context]

probably got lost when my mail address was in transition



I sent you some mails during that period that were not answered.
I thought it was a retaliation for not presenting anything at the meeting :)

Anyway I'll prepare an article on running ConTeXt inside a container 
that could eventually end in the current issue of CJ, since Hraban wrote 
that


> New articles are also welcome, as always!

Massimiliano
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Re: [NTG-context] new upload

[mf via ntg-context]

The problem on lowlevel-alignments.pdf is solved too.
Now the update process is OK again.
Thanks.
Massi

Il 30/08/21 20:01, Hans Hagen via ntg-context ha scritto:

On 8/30/2021 7:27 PM, Rik Kabel via ntg-context wrote:
The corrected upload (2021.08.30 16:23) still has an issue. The 
--autopdf option results in:


╰─► context --autopdf test.tex
lua error : function call: 
...TX/tex/texmf-context/scripts/context/lua/mtx-context.lua:488: 
attempt to call a nil value (global 'filenewsuffix')


Without autopdf things work as expected.

ok. new upload

(the installer for windows arm64 should now work too, as i just tested 
it on the rpi 4 with windows 11)


Hans


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Re: [NTG-context] new upload

[mf via ntg-context]

There's a problem downloading lowlevel-alignments.pdf.
Here's a slice of the log of install.sh:

mtx-install | updating tex/texmf, 1530 files
mtx-install | updating tex/texmf-context, 4130 files
mtx-install | changed  :   0 % :27550 : 
tex/texmf-context/context/data/scite/context/lexers/data/scite-context-data-context.lua
mtx-install | changed  :   1 % :15493 : 
tex/texmf-context/context/data/scite/context/lexers/data/scite-context-data-tex.lua
mtx-install | changed  :   1 % :23670 : 
tex/texmf-context/context/data/scite/context/scite-context-data-context.properties
mtx-install | changed  :   2 % :13061 : 
tex/texmf-context/context/data/scite/context/scite-context-data-tex.properties
mtx-install | changed  :   2 % :27550 : 
tex/texmf-context/context/data/textadept/context/data/scite-context-data-context.lua
mtx-install | changed  :   3 % :15493 : 
tex/texmf-context/context/data/textadept/context/data/scite-context-data-tex.lua
mtx-install | changed  :   3 % :   150521 : 
tex/texmf-context/context/data/vscode/extensions/context/syntaxes/context-syntax-tex.json
mtx-install | added:   7 % :  199 : 
tex/texmf-context/doc/context/documents/general/manuals/lowlevel-alignments.pdf
mtx-install | 
tex/texmf-context/doc/context/documents/general/manuals/lowlevel-alignments.pdf, 
trying again:
mtx-install | added:   7 % :  199 : 
tex/texmf-context/doc/context/documents/general/manuals/lowlevel-alignments.pdf
mtx-install | 
tex/texmf-context/doc/context/documents/general/manuals/lowlevel-alignments.pdf, 
trying again:
mtx-install | added:   7 % :  199 : 
tex/texmf-context/doc/context/documents/general/manuals/lowlevel-alignments.pdf
mtx-install | 
tex/texmf-context/doc/context/documents/general/manuals/lowlevel-alignments.pdf, 
trying again:
mtx-install | added:   7 % :  199 : 
tex/texmf-context/doc/context/documents/general/manuals/lowlevel-alignments.pdf
mtx-install | 
tex/texmf-context/doc/context/documents/general/manuals/lowlevel-alignments.pdf, 
trying again:
mtx-install | added:   7 % :  199 : 
tex/texmf-context/doc/context/documents/general/manuals/lowlevel-alignments.pdf
mtx-install | 
tex/texmf-context/doc/context/documents/general/manuals/lowlevel-alignments.pdf, 
try again later:


After 5 unsuccessful trials to download the file, the updating process 
does not complete. The script ends without errors, but it's clear the 
update has failed.


Massi


Il 30/08/21 16:30, Hans Hagen via ntg-context ha scritto:

Hi,

new in this upload are some features in tabulate (not all enabled yet), 
like


\starttabulate[|lG{.}|cG{,}|rG{=}|cG{x}|]
\NC 1.1 \NC 2,2 \NC 3=3 \NC a 0xFF   \NC \NR
\NC 11.11   \NC 22,22   \NC 33=33   \NC b 0xFFF  \NC \NR
\NC 111.111 \NC 222,222 \NC 333=333 \NC c 0x \NC \NR
\stoptabulate

\starttabulate[|lG{}|lG{}|]
\NC \showglyphs \setalignmentcharacter{.}1.1 \NC 
\setalignmentcharacter{.}1.1 \NC\NR
\NC \showglyphs \setalignmentcharacter{,}11,11   \NC 
\setalignmentcharacter{,}11,11   \NC\NR
\NC \showglyphs \setalignmentcharacter{=}111=111 \NC 
\setalignmentcharacter{=}111=111 \NC\NR

\stoptabulate

\starttabulate[|lG{.}|lG{}|]
\NC 1.1 \NC \setalignmentcharacter{.}1.1 \NC\NR
\NC 11.11   \NC \setalignmentcharacter{.}11.11   \NC\NR
\NC 111.111 \NC \setalignmentcharacter{.}111.111 \NC\NR
\stoptabulate

\starttabulate[|lG{.}|rG{.}|]
\NC foo.bar \NC foo.bar \NC \NR
\NC  oo.ba  \NC  oo.ba  \NC \NR
\NC   o.b   \NC   o.b   \NC \NR
\stoptabulate

\starttabulate[|cG{d}|]
\NC \smallcaps abcdefgh \NC \NR
\NC  xdy    \NC \NR
\NC \sl  xdy    \NC \NR
\NC \tttf    xdy    \NC \NR
\NC \tfd  d \NC \NR
\stoptabulate

The G option is like g but better so it sort of replaces it.

updated: lowlevel-expansion   (also discusses luametatex)
new    : lowlevel-alignments  (also discusses luametatex)

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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Re: [NTG-context] error in mtxrun.lua line 4548 in August 24th update

[mf via ntg-context]

Il 25/08/21 14:06, Hans Hagen ha scritto:

On 8/25/2021 1:20 PM, mf via ntg-context wrote:

Il 25/08/21 13:06, Hans Hagen ha scritto:

On 8/25/2021 11:18 AM, mf via ntg-context wrote:

Hello,
here's the error I get:

lua error : function call: 
...si/context/lmtx-latest/tex/texmf-linux-64/bin/mtxrun.lua:4548: 
bad argument #2 to 'lpegmatch' (string expected, got nil)


BTW I was trying to compile lowlevel-expansion.tex in

tex/texmf-context/doc/context/sources/general/manuals/lowlevel

after I've seen (looking at the diffs in the git repo) there were 
some updates in the manual.
It works here ... can you try with the top line removed? Otherwise we 
need to zoom in on where it fails (some path split issue).

Yes, it's the runpath directive not working.

ok, so can you track that down in mtx-context.lua? (i know you can)



The problem is that the argument "one" is nil, but the function 
file.join checks only for one=="".


Lines 4541--4548:

4541  function file.join(one,two,three,...)
4542   if not two then
4543return one=="" and one or lpegmatch(reslasher,one)
4544   end
4545   if one=="" then
4546return lpegmatch(stripper,three and concat({ two,three,... 
},"/") or two)

4547   end
4548   if lpegmatch(isnetwork,one) then

At line 4545 you check only for one being an empty string, but it 
happens to be nil, so the program fails at line 4548.


Patching line 4545 like this:

4545   if not one or one=="" then

removes the error.

I leave to you whether the "one" argument should arrive nil to that 
line, or it should be normalized to an empty string before entering 
file.join.


Massi
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Re: [NTG-context] error in mtxrun.lua line 4548 in August 24th update

[mf via ntg-context]

Il 25/08/21 13:06, Hans Hagen ha scritto:

On 8/25/2021 11:18 AM, mf via ntg-context wrote:

Hello,
here's the error I get:

lua error : function call: 
...si/context/lmtx-latest/tex/texmf-linux-64/bin/mtxrun.lua:4548: bad 
argument #2 to 'lpegmatch' (string expected, got nil)


BTW I was trying to compile lowlevel-expansion.tex in

tex/texmf-context/doc/context/sources/general/manuals/lowlevel

after I've seen (looking at the diffs in the git repo) there were some 
updates in the manual.
It works here ... can you try with the top line removed? Otherwise we 
need to zoom in on where it fails (some path split issue).

Yes, it's the runpath directive not working.
Massi
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[NTG-context] error in mtxrun.lua line 4548 in August 24th update

[mf via ntg-context]

Hello,
here's the error I get:

lua error : function call: 
...si/context/lmtx-latest/tex/texmf-linux-64/bin/mtxrun.lua:4548: bad 
argument #2 to 'lpegmatch' (string expected, got nil)


BTW I was trying to compile lowlevel-expansion.tex in

tex/texmf-context/doc/context/sources/general/manuals/lowlevel

after I've seen (looking at the diffs in the git repo) there were some 
updates in the manual.


Massi
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Re: [NTG-context] new upload

[mf]

Il 25/05/21 18:20, Hans Hagen ha scritto:


Inserts are somewhat complex (and interwoven) and are also somewhat 
fuzzy when one wants to do checking when making progress on a page.  We 
already deal with that in context in a reasonable way but I get the 
feeling that we can do better. This and the above are reasons to come up 
with a variant memory model that permits playing with additional 
features more easily. The existing storage model is stil there (after 
all it's tex) but for those willing to check the alternative, in 
page-ins.mkxl one can uncomment


    % \insertmode\plustwo

and remake the format.


I tested it with 2 volumes (632 and 936 pages). Both have 2 kinds of 
footnotes; in the first there are also footnotes inside footnotes.


diffpdf says the resulting PDFs are identical to the ones obtained with 
that line commented out.


So, regarding those two samples, the change has no effect in the output.

Massi
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Re: [NTG-context] Stack size for arguments too small in LMTX

[mf]

Il 25/05/21 17:25, Henri Menke ha scritto:

Dear list,

For some reason pgfplots has a \pgfkeys invocation where the argument
has more than 4000 lines. This crashes LuaMetaTeX with the message

 tex error > tex error on line 4045 in file pgfplots.code.tex: TeX capacity 
exceeded, sorry [token memory size=100]

It doesn't seem to be an issue with LuaTeX, so my guess is that token
memory size is larger in LuaTeX.  Could you please increase the stack
size to make this edge case compile again?

This issue was originally reported on the pgfplots bugtracker:
https://github.com/pgf-tikz/pgfplots/issues/398



Next lmtx upload will fix the issue (a configuration file that has not 
been updated).

Hans told me to do this:

cp ./tex/texmf-context/web2c/contextcnf.lua ./tex/texmf/web2c/texmfcnf.lua
mtxrun --generate
context --make

in lmtx base dir.
It should fix the issue until next upload.

Massi
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Re: [NTG-context] custom zig zag sidebars

[mf]

Il 28/04/21 17:53, Hans Hagen ha scritto:

On 4/28/2021 5:27 PM, mf wrote:

Hello,

I made an experiment to add alternatives to sidebars (see attachment).

I discovered the sidebar is drawn by anch_sidebars_draw in 
metapost/context/base/mpiv/mp-apos.mpiv.


I've redefined it locally to add alternatives.

To make fancy, zig zag bars I defined a macro, draw_pattern_bar, that 
draws a bar repeating a pattern which is a path connecting (0,0) and 
(1,0).


The macro has 3 parameters (actually it has more params, but the 
remainder are anch_sidebars_draw params):


- a pattern, which is a path from (0,0) to (1,0) that should have a 
vertical size = 1; it's a sort of waveform


- a pattern length, by which the pattern is xsized

- a pattern width, by which the pattern is ysized

Then the pattern is rotated along the bar direction (so -90 degrees) 
and drawn many times until it covers the bar length.


A proposal and a question:

- patternlength and patternwidth could become \setupsidebar params; 
alternative (=2,3,4...) could be used to specify the pattern (a sort 
of waveform); currently alternative=0 is a solid bar and alternative=1 
is a dashed one


- in case of long patterns (a patternlength spanning more lines of 
text) the last replica of the pattern should be clipped not to exceed 
the last line of the sidebarred text (see the last example): how can 
that be done?

how about

def draw_pattern_bar(expr a, b, pattern, patternlength, patternheight, 
linewidth, linecolor) =

    draw image (
    begingroup ;
    save p, q, stp ;
    pair p, q, stp ;
    stp := ( ( b - a ) / arclength( a -- b ) ) * patternlength ;
    path q ; q := pattern xscaled patternlength yscaled 
patternheight rotated (angle(stp)) ;

    p := a ;
    forever :
    draw
    q shifted p
    withpen pencircle scaled linewidth
    withcolor linecolor ;
    p := p + stp ;
    exitif arclength( a -- p ) > arclength( a -- b ) ;
    endfor ;
    endgroup ;
    clip currentpicture to
    (xpart llcorner currentpicture, ypart b) --
    (xpart lrcorner currentpicture, ypart b) --
    (xpart urcorner currentpicture, ypart a) --
    (xpart ulcorner currentpicture, ypart a) -- cycle ;
    ) ;
enddef ;



Thank you, Hans.

To save this example, I wikified \setupsidebar, \definesidebar and 
\startsidebar...\stopsidebar.


If you do something on alternatives, let me know.

Massi
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[NTG-context] custom zig zag sidebars

[mf]

Hello,

I made an experiment to add alternatives to sidebars (see attachment).

I discovered the sidebar is drawn by anch_sidebars_draw in 
metapost/context/base/mpiv/mp-apos.mpiv.


I've redefined it locally to add alternatives.

To make fancy, zig zag bars I defined a macro, draw_pattern_bar, that 
draws a bar repeating a pattern which is a path connecting (0,0) and (1,0).


The macro has 3 parameters (actually it has more params, but the 
remainder are anch_sidebars_draw params):


- a pattern, which is a path from (0,0) to (1,0) that should have a 
vertical size = 1; it's a sort of waveform


- a pattern length, by which the pattern is xsized

- a pattern width, by which the pattern is ysized

Then the pattern is rotated along the bar direction (so -90 degrees) and 
drawn many times until it covers the bar length.


A proposal and a question:

- patternlength and patternwidth could become \setupsidebar params; 
alternative (=2,3,4...) could be used to specify the pattern (a sort of 
waveform); currently alternative=0 is a solid bar and alternative=1 is a 
dashed one


- in case of long patterns (a patternlength spanning more lines of text) 
the last replica of the pattern should be clipped not to exceed the last 
line of the sidebarred text (see the last example): how can that be done?


Massi


\definesidebar[zigzag1][rulecolor=black,distance=4pt,rulethickness=1pt,alternative=2]
\definesidebar[zigzag2][rulecolor=red,distance=4pt,rulethickness=1pt,alternative=3]
\definesidebar[wave1][rulecolor=blue,distance=4pt,rulethickness=1pt,alternative=4]
\definesidebar[wave2][rulecolor=cyan,distance=4pt,rulethickness=1pt,alternative=5]
\definesidebar[obliquedashes][rulecolor=darkgreen,distance=4pt,rulethickness=1pt,alternative=6]
\definesidebar[longobliquedashes][rulecolor=orange,distance=10pt,rulethickness=1pt,alternative=7]

\startMPcode
def draw_pattern_bar(expr a, b, pattern, patternlength, patternheight, linewidth, linecolor) =
begingroup ;
save p, z, step ;
pair p, z, step ;
step := ( ( b - a ) / arclength( a -- b ) ) * patternlength ;
path z ; z := pattern xscaled patternlength yscaled patternheight rotated (angle(step)) ;
p := a ;
forever :
draw
z shifted p
withpen pencircle scaled linewidth
withcolor linecolor ;
p := p + step ;
exitif arclength( a -- p ) > arclength( a -- b ) ;
endfor ;
endgroup ;
enddef ;

% from metapost/context/base/mpiv/mp-apos.mpiv
def anch_sidebars_draw (expr p_b_self, p_e_self, y_b_self, y_e_self, h_b_self, d_e_self,
x, y, w, h, alternative, distance, linewidth, linecolor, topoffset, bottomoffset) =
% beware, we anchor at (x,y)
begingroup ;
if alternative = 1 :
interim linecap := rounded ;
else :
interim linecap := butt ;
fi ;
save a, b ; pair a, b ;
if p_b_self = p_e_self :
a := (-distance,y_b_self+h_b_self-y) ;
b := (-distance,y_e_self-d_e_self-y) ;
elseif RealPageNumber = p_b_self :
a := (-distance,y_b_self+h_b_self-y) ;
b := (-distance,0) ;
elseif RealPageNumber = p_e_self :
a := (-distance,h) ;
b := (-distance,y_e_self-d_e_self-y) ;
else :
a := (-distance,h) ;
b := (-distance,0) ;
fi ;
a := (xpart a, min(ypart a + topoffset,   h)) ;
b := (xpart b, max(ypart b - bottomoffset,0)) ;
if alternative = 2 :
draw_pattern_bar( a, b, ((0,0)--(0.25,-0.5)--(0.75,0.5)--(1,0)), 2pt, 2pt, linewidth, linecolor ) ;
elseif alternative = 3 :
draw_pattern_bar( a, b, ((0,0)--(0.25,-0.5)--(0.75,0.5)--(1,0)), 4pt, 1.5pt, linewidth, linecolor ) ;
elseif alternative = 4 :
draw_pattern_bar( a, b, ( ((0,0) .. controls (0,0.5) and (0.5,0.5) .. (0.5,0)) -- ((0.5,0) .. controls (0.5,-0.5) and (1,-0.5) .. (1,0)) ), 6pt, 4pt, linewidth, linecolor ) ;
elseif alternative = 5 :
draw_pattern_bar( a, b, ( (0,0) .. controls (0,1) and (1,1) .. (1,0) ), 4pt, 2pt, linewidth, linecolor ) ;
elseif alternative = 6 :
draw_pattern_bar( a, b, ( (0,0.5) .. (1,-0.5) ), 4pt, 2pt, linewidth, linecolor ) ;
elseif alternative = 7 :
draw_pattern_bar( a, b, ( (0,-0.5) .. (1,0.5) ), 22pt, 5pt, linewidth, linecolor ) ;
else :
draw
a -- b
if alternative = 1 :
dashed (withdots scaled (linewidth/2))
fi
withpen pencircle scaled linewidth
withcolor linecolor ;
fi ;
endgroup ;
enddef ;
\stopMPcode

\starttext
\startsidebar[zigzag1]\input knuth\relax\stopsidebar\par
\blank
\startsidebar[zigzag2]\input sapolsky\relax\stopsidebar\par
\blank
\startsidebar[wave1]\input knuth\relax\stopsidebar\par
\blank
\startsidebar[wave2]\input sapolsky\relax\stopsidebar\par
\blank
\startsidebar[obliquedashes]\input knuth\relax\stopsidebar\par
\blank
\startsidebar[longobliquedashes]\input 

Re: [NTG-context] clubs and widows in columns

[mf]

Il 25/04/21 22:19, Jano Kula ha scritto:

Dear list,

is there a way to avoid clubs and widows in columns? I don't know, how 
it would be implemented, if the task is splitting typeset vertical list.


\setuppapersize[A7]
\starttext
\startcolumns[separator=rule,
               align={right,nothyphenated}]
\dorecurse{12}{→ one two three four five\par}
\stopcolumns
\stoptext

For a different task: are there some higher level commands in ctx than 
\vsplitprimitive to play with vbox splitting?




As a workaround, you could try switching to pagecolumns: since they are 
typeset as pages and then rearranged as columns on a page, I expect 
clubs' and widows' penalties to work as in a single page.

I've not tried, anyway.

Best wishes,
Massi
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Re: [NTG-context] nbsp in XML (S01E01)

[mf]

Try this:

%\xmltexentity{nbsp}{\nobreakspace}

\xmlsetentity{nbsp}{ } % U+00A0 NBSP between braces

%\xmlsetentity{nbsp}{ } % U+0020 normal space between braces



\startbuffer[doc]





Temperature 20 °C 20 °C 20 °C 20 °C average.

Altitude 6000m 6000m 6000m 6000m 
average.




\stopbuffer



\startluacode

--[[

function lxml.preprocessor(data)

-- data = string.gsub(data, "", "~")

-- replacement nbsp invisible in luacode

data = string.gsub(data, "", " ")

return data

end

--]]

\stopluacode





\startxmlsetups xml:name

\xmlsetsetup{\xmldocument}{*}{-}

\xmlsetsetup{\xmldocument}{document|p}{xml:name:*}

\stopxmlsetups

\xmlregistersetup{xml:name}



\startxmlsetups xml:name:document

\xmlflush{#1}\par

\stopxmlsetups



\startxmlsetups xml:name:p

\parfillskip0pt\xmlflush{#1}\par

\stopxmlsetups



\startTEXpage[offset=5mm,width=60mm]

\xmlprocessbuffer{xml:name}{doc}{}

\stopTEXpage




Massi

Il 21/04/21 20:17, Jano Kula ha scritto:

Dear list,

first episode of series on nbsp of XML in lmtx.
Unfortunately, not that catchy as Netflix.

Used XML input has two types of non-breakable space:

  * unicode character
  * html entitity (in fact an ugly output of HTML editor)

HTML is preprocessed with ctx preprocessor (great feature!) and 
substituted for unicode char nbsp or tilde.


MWE shows unichar spaces are non-breakable (see end of the first lines), 
however they are not stretchable (see second line of the paragraphs).


Does unicode nbsp have fixed with in ctx?

When tilde is the replacement in preprocessor (uncomment first 
replacement in preprocessor), xmlfush will display tilde (which is, as 
character, non-breakable and unstretchable, no surprise).


Why tilde is displayed?

Replacing or adding nbsp (tilde) with finalizers have different results, 
see next episode after this one is understood.


Thank you,
Jano

MWE (rather use attached file not to loose invisible characters):

\startbuffer[doc]


         Temperature 20 °C 20 °C 20 °C 20 °C average.
         Altitude 6000nbsp;m 6000nbsp;m 6000nbsp;m 
6000nbsp;m average.


\stopbuffer

\startluacode
function lxml.preprocessor(data)
     -- data = string.gsub(data, "nbsp;", "~")
     -- replacement nbsp invisible in luacode
     data = string.gsub(data, "nbsp;", " ")
     return data
end
\stopluacode


\startxmlsetups xml:name
     \xmlsetsetup{\xmldocument}{*}{-}
     \xmlsetsetup{\xmldocument}{document|p}{xml:name:*}
\stopxmlsetups
\xmlregistersetup{xml:name}

\startxmlsetups xml:name:document
\xmlflush{#1}\par
\stopxmlsetups

\startxmlsetups xml:name:p
\parfillskip0pt\xmlflush{#1}\par
\stopxmlsetups

\startTEXpage[offset=5mm,width=60mm]
\xmlprocessbuffer{xml:name}{doc}{}
\stopTEXpage


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Re: [NTG-context] metafun / patterns

[mf]

Sorry for the noise, my fault: Thunderbird replaced some semicolon 
combinations with emojis, so they were missing when I copied and pasted 
them in a source file.


Massi

Il 25/03/21 15:14, mf ha scritto:

Il 25/03/21 14:11, Hans Hagen ha scritto:


\startMPpage[offset=1cm]
 draw (fullcircle scaled 5cm shifted (0cm,0cm))
 withpattern image (fill fullcircle scaled 1cm withcolor 
"darkblue" ;)

 withpatternscale (1/10,1/10)
 ;

 draw (fullcircle scaled 5cm shifted (5cm,0cm))
 withpattern image (fill fullcircle scaled 5mm withcolor 
"darkred" ;)

 withpatternscale (1/20,1/20)
 ;

 draw (fullcircle scaled 5cm shifted (10cm,0cm))
 withpattern image (fill fullcircle scaled 5mm withcolor 
"darkgreen" ;)

 withpatternscale (1/40,1/40)
 ;

 draw (fullcircle scaled 5cm shifted (0cm,5cm))
 withpattern image (fill fullcircle scaled 1cm withcolor 
"darkcyan" ;)

 withpatternscale (1/10,1/20)
 ;

 draw (fullcircle scaled 5cm shifted (5cm,5cm))
 withpattern image (fill fullcircle scaled 5mm withcolor 
"darkmagenta" ;)

 withpatternscale (1/20,1/40)
 ;

 draw (fullcircle scaled 5cm shifted (10cm,5cm))
 withpattern image (fill fullcircle scaled 5mm withcolor 
"darkyellow" ;)

 withpatternscale (1/40,1/80)
 ;
\stopMPpage

\startMPpage[offset=1cm]
 fill fullcircle scaled 11cm
 withcolor "darkyellow" ;

 draw fullcircle scaled 10cm
 withpattern image (fill fullcircle scaled 1cm withcolor 
"darkblue" ;)

 ;

 draw fulldiamond scaled 8cm
 withpattern image (fill fulldiamond scaled 4mm withcolor 
"darkgreen" ;)

 rotated 15
 ;

 draw fulltriangle scaled 9cm
 withpattern image (fill fulltriangle scaled 3mm withcolor 
"white" ;)

 rotated 45
 ;

 draw fullcircle scaled 10cm
 withpattern image (draw textext("!") withcolor "middlegray" ;)
 rotated 45
 ;

 draw fullcircle scaled 10cm
 withpen pencircle scaled 1mm
 withcolor "darkgray" ;
\stopMPpage



Those first two pages appear 20x20mm and blank.

Page 3 and 4 show patterns instead.

Massi
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Re: [NTG-context] metafun / patterns

[mf]

Il 25/03/21 14:11, Hans Hagen ha scritto:


\startMPpage[offset=1cm]
     draw (fullcircle scaled 5cm shifted (0cm,0cm))
     withpattern image (fill fullcircle scaled 1cm withcolor 
"darkblue" ;)

     withpatternscale (1/10,1/10)
     ;

     draw (fullcircle scaled 5cm shifted (5cm,0cm))
     withpattern image (fill fullcircle scaled 5mm withcolor 
"darkred" ;)

     withpatternscale (1/20,1/20)
     ;

     draw (fullcircle scaled 5cm shifted (10cm,0cm))
     withpattern image (fill fullcircle scaled 5mm withcolor 
"darkgreen" ;)

     withpatternscale (1/40,1/40)
     ;

     draw (fullcircle scaled 5cm shifted (0cm,5cm))
     withpattern image (fill fullcircle scaled 1cm withcolor 
"darkcyan" ;)

     withpatternscale (1/10,1/20)
     ;

     draw (fullcircle scaled 5cm shifted (5cm,5cm))
     withpattern image (fill fullcircle scaled 5mm withcolor 
"darkmagenta" ;)

     withpatternscale (1/20,1/40)
     ;

     draw (fullcircle scaled 5cm shifted (10cm,5cm))
     withpattern image (fill fullcircle scaled 5mm withcolor 
"darkyellow" ;)

     withpatternscale (1/40,1/80)
     ;
\stopMPpage

\startMPpage[offset=1cm]
     fill fullcircle scaled 11cm
     withcolor "darkyellow" ;

     draw fullcircle scaled 10cm
     withpattern image (fill fullcircle scaled 1cm withcolor 
"darkblue" ;)

     ;

     draw fulldiamond scaled 8cm
     withpattern image (fill fulldiamond scaled 4mm withcolor 
"darkgreen" ;)

     rotated 15
     ;

     draw fulltriangle scaled 9cm
     withpattern image (fill fulltriangle scaled 3mm withcolor 
"white" ;)

     rotated 45
     ;

     draw fullcircle scaled 10cm
     withpattern image (draw textext("!") withcolor "middlegray" ;)
     rotated 45
     ;

     draw fullcircle scaled 10cm
     withpen pencircle scaled 1mm
     withcolor "darkgray" ;
\stopMPpage



Those first two pages appear 20x20mm and blank.

Page 3 and 4 show patterns instead.

Massi
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Re: [NTG-context] lmtx update / teaser

[mf]

Il 01/03/21 15:44, Hans Hagen ha scritto:


\starttext

\startuseMPgraphic{circle}
     lmt_parshape [
     path   = fullcircle scaled 136mm,
     offset = 2mm,
     bottomskip = - 1.5LineHeight,
     ] ;
\stopuseMPgraphic

\start
\startshapedparagraph[list=circle,mp=circle,repeat=yes,method=cycle]%


list=... refers to a previous \startparagraphshape definition, so mp=... 
tells ConTeXt that the definition is derived from MetaPost code instead.


Just mp=... could be enough, but maybe "list=xyz,mp=xyz" makes it clear 
that mp is used to get a parshape from MetaPost instead of a 
\startparagraphshape definition.



     \setupalign[verytolerant,stretch,last]\dontcomplain


What's the meaning of \dontcomplain? Why is it needed there?

BTW, \startparagraphshape, \stopparagraphshape, \startshapedparagraph, 
\stopshapedparagraph should be added to the .xml documentation files.


The "right", "left", "both", "copy", "repeat" syntax in 
\startparagraphshape is really handy.


Thanks,
Massi
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[NTG-context] verify if you are already postponing notes

[mf]

Dear list,
I'm typesetting XHTML and there is a couple of cases (tables and math), 
where I use \postponenotes ... \flushnotes in both their XML setups.


The problem arises when I have math inside the cell of a table, so I get 
those commands nested:


\postponenotes %  element

\postponenotes %  element inside a cell

\flushnotes %  closing math

\flushnotes %  closing table

With CSS selectors or XML machinery I can find those corner cases, but 
something like this would be better because more general:


\doifnotpostponingnotes{\postponenotes}

\dofipostponingnotes{\flushnotes}

Is there a way to define those \doif... macros?

Massi
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Re: [NTG-context] Centered list of authors in ToC

[mf]

Il 09/02/21 10:49, jbf ha scritto:
I wonder if someone can assist me with the final step in a complicated 
Table of Contents where all items in the ToC are centred (except page 
numbers which continue to be on the right).


Beneath each chapter title is a list of authors (Yes, there can be up to 
four authors per chapter!)


I can successfully achieve everything (see MWE below) except for getting 
the list of authors to split and be centred. Because there are four of 
them, I would need to split them so they appear as two (centred) with 
the other two below(also centred).


Here is my MWE for the essential bit (which is then called in as 
textcommand=\SectionTocEntry in \setuplist[chapter], obviously):


\define[1]\SectionTocEntry{%
#1\crlf% title
\midaligned{\doifnot{\structurelistuservariable{author}}{}{\structurelistuservariable{author}}}% 


}


try \startalignment[middle] ... \stopalignment instead of \midaligned



My problem is that at the moment, the four authors appear on a single 
line, so I end up with:


    My chapter title
Mickey Mouse, Donald Duck, Uncle Scrooge, Minnie Mouse  [p. 1, but in 
fact, Minnie Mouse runs across the page number!]


What I want instead is:

   My chapter title
     Mickey Mouse, Donald Duck
    Uncle Scrooge, Minnie Mouse    [p. number]

Back at the chapter level my code reads:

\startchapter[title={Chapter title}][author={Mickey Mouse, Donald Duck, 
Uncle Scrooge, Minnie Mouse}].


\startchapter[title={Chapter title}][author={Mickey Mouse, Donald 
Duck,\crlf Uncle Scrooge, Minnie Mouse}].


Massi
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Re: [NTG-context] new font trickery

[mf]

When I started using ConTeXt, font management gave me headaches because 
I expected fonts to be indefinitely scalable and not to be designed in 
advance at fixed sizes.


That came from using software like Word, where fonts are scalable at any 
size. Since I had no background in typesetting, I took vector, 
indefinitely scalable fonts for granted.

With that mindset a 48pt font is just a 10pt font scaled 4.8 times.

Then I knew about optical sizes, which were the norm with lead glyphs, 
because they came in heavy physical sets. And so the notion that as the 
font body gets bigger, the stroke gets thinner (so it's not just scaling).


I like this feature because it should make playing with sizes easier for 
people while lighter for machines, even though fixed sizes to be 
designed in advance enforce discipline and consistency in documents.


Massi
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Re: [NTG-context] Inkscape 1 without gui

[mf]

See here:

https://www.mail-archive.com/ntg-context@ntg.nl/msg94431.html

and here:

https://wiki.contextgarden.net/SVG#ConTeXt_and_Inkscape

Massi

Il 12/12/20 12:00, Martin Hasoň ha scritto:

Hi all,

Inkscape version detection doesn't work for Inkscape 1 and non-gui 
environments (eg docker). The output of the `inkscape --version` command is


 > Unable to init server: Could not connect: Connection refused
 > Inkscape 1.0 (4035a4fb49, 2020-05-01)
 >    Pango version: 1.44.7

This is standard commands behaviour without `--batch-process` and 
`--without-gui` options 
https://wiki.inkscape.org/wiki/index.php/Using_the_Command_Line 



Because the version of inkscape is on the second line, ConTeXt use 
options for 0.92 version and Inkscape 1 ends with an error message:


 > Unable to init server: Could not connect: Connection refused
Unknown option --export-pdf=/app/pages/m_k_i_v_01.svg.pdf

Best regards
Martin Hasoň


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Re: [NTG-context] Piecewise margin line

[mf]

Il 20/11/20 02:06, Johann Birnick ha scritto:

On Thu, 2020-11-19 at 11:25 +0100, mf wrote:

Il 19/11/20 10:39, Johann Birnick ha scritto:

Hello,

I want to setup some fancy theorem style for my math notes. For this I want
to
have a colored margin line next to my theorems. It should look like this:

https://i.ibb.co/F6L59pD/idea.png

The line should stretch over the whole theorem, not just the first line.
(But the latter would be a beginning, though.)

Important to note is that the line should be *on the margin*, not in the
text.

So do you have an idea on how I could do that? I would greatly appreciate
your
answer. Thank you!


Look for \startsidebar \stopsidebar and \setupsidebar.

\setupsidebar [...,...] [..,..=..,..]
    1   2
   OPT
1 NAME
2 rulethickness  = DIMENSION
    rulecolor  = COLOR
    alternative    = NUMBER
    topoffset  = DIMENSION
    bottomoffset   = DIMENSION
    distance   = DIMENSION
    leftmargindistance = DIMENSION
    level  = NUMBER

Massi


Thank you! I have two more questions:

1. Where can I find a documentation for this command? Even Google finds nothing.


I took it from the "Commands" manual. You can find it here:

./tex/texmf-context/doc/context/documents/general/qrcs/setup-en.pdf

in your ConTeXt directory.


2. Unfortunately, adding \startsidebar and \stopsidebar into the `before` and
`after` options of my enumeration messes up whitespace at the end. Here is a
screenshot:

https://s12.directupload.net/images/201120/lfmwp5lh.png

The theorem is a normal enumeration. Like this:

\defineenumeration[Theorem][before=\startsidebar, after=stopsidebar]



\startsidebar and \stopsidebar should be called in horizontal mode, 
since you might want to mark in the margin only a part of a paragraph.
In that case the bar would extend from the start of the marked text 
until its end.
The default behavior of the bar is extending from the top of the first 
line to the bottom of the last one.
Once you ended a paragraph with \par, you're in a new line and the bar 
will extend to the bottom of it.


A solution could be something like this:

\dontleavehmode\startsidebar Theorem: ... \stopsidebar\par

Otherwise you could adjust the bottomoffset parameter to the line 
height, so that the bar ends a line height before its default.


That way you could keep

> \defineenumeration[Theorem][before=\startsidebar, after=stopsidebar]

or, better:

\definesidebar[Theorem][bottomoffset=...]
\defineenumeration[Theorem][before={\startsidebar[Theorem]},after=\stopsidebar]

Massi
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Re: [NTG-context] new upload

[mf]

Il 19/11/20 12:00, mf ha scritto:

Tested. It works.

- download the binaries from 
http://lmtx.pragma-ade.nl/install-lmtx/context-linux-64.zip


- unzip it in your context directory



- make install.sh and bin/mtxrun executable

- run install.sh

and you can see the upgrade progression again.

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Re: [NTG-context] new upload

[mf]

Tested. It works.

- download the binaries from 
http://lmtx.pragma-ade.nl/install-lmtx/context-linux-64.zip


- make install.sh and bin/mtxrun executable

- run install.sh

and you can see the upgrade progression again.

Thanks Hans,
Massi

Il 19/11/20 11:35, Hans Hagen ha scritto:

Hi,

A new upload. Hopefully with the linux install fixed.


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Re: [NTG-context] Piecewise margin line

[mf]

Il 19/11/20 10:39, Johann Birnick ha scritto:

Hello,

I want to setup some fancy theorem style for my math notes. For this I want to
have a colored margin line next to my theorems. It should look like this:

https://i.ibb.co/F6L59pD/idea.png

The line should stretch over the whole theorem, not just the first line.
(But the latter would be a beginning, though.)

Important to note is that the line should be *on the margin*, not in the text.

So do you have an idea on how I could do that? I would greatly appreciate your
answer. Thank you!


Look for \startsidebar \stopsidebar and \setupsidebar.

\setupsidebar [...,...] [..,..=..,..]
  1   2
 OPT
1 NAME
2 rulethickness  = DIMENSION
  rulecolor  = COLOR
  alternative= NUMBER
  topoffset  = DIMENSION
  bottomoffset   = DIMENSION
  distance   = DIMENSION
  leftmargindistance = DIMENSION
  level  = NUMBER

Massi
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Re: [NTG-context] Indentation after \placefigure

[mf]

Il 10/11/20 09:42, Sylvain Hubert ha scritto:

Dear List,

Does anyone know how to indent the paragraph beneath \placefigure in the 
following example?


     \indenting[2em]
     \setupindenting[yes]

     \starttext

     \dorecurse{50}{a b c }

     \placefigure[here,none][indentnext=yes]{}{
     \startMPcode
     draw fullcircle scaled 1cm;
     \stopMPcode
     }

     \dorecurse{50}{d e f } % not indented

     \dorecurse{50}{g h i }
     \stoptext



The second bracket group of \placefigure is for references.
Instead of

\placefigure[here,none][indentnext=yes]{}{...

write

\setupfloat[figure][indentnext=yes]
\placefigure[here,none]{}{...

That way you enable indentation after every figure.

Massi
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Re: [NTG-context] new upload

[mf]

Il 06/11/20 22:03, Pablo Rodriguez ha scritto:

I’m afraid that I cannot update unless I remove tex/texmf*.tma.

I’m on Linux-64bit and I wonder whether I’m the only user affected by
this issue.


I can confirm that on my Debian 10 64bit: no update until I removed

texmf-context.tma
texmf-linux-64.tma
texmf.tma

in the tex subdir.

Massi
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Re: [NTG-context] \blank[] doesn't work when nothing precedes it

[mf]

Il 05/11/20 13:26, Sylvain Hubert ha scritto:

Dear List,

I'm trying to put the document title at around .25\paperheight by 
inserting a \blank:


     \setuplayout[topspace=0cm, header=0cm, height=\paperheight]
     \starttext \blank[.25\paperheight] foo \stoptext



\blank[.25\paperheight,force]

A blank at the top of a page is ignored, because usually you use a blank 
as a separator, that is useless at the top of a page, because the page 
break is enough to separate two texts.


Sometimes you need a blank on top anyway, i.e. at the start of a chapter.
In that case use "force".

Massi
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Re: [NTG-context] content of xml node (element) in lua

[mf]

(sorry, I sent it before refining it)

Il 16/10/20 20:57, Jano Kula ha scritto:

Hello!

Processing XML I want to manipulate content of XML elements inside Lua.

I can define the Lua function xml.functions.name 
(t), where processing happens, and use the 
command \xmlfunction{#1}{name} to pass the current node #1from ctx to 
lua as described in the xml-mkiv.pdf manual. To access the element 
content xml.text(t,"/element") Lua function is used.


However, using the same function xml.text("#1",/element) directly inside 
Lua doesn't work for me. Node #1 is available, but not the content of 
/element.


In your lua fragment, node #1 is available as "xml:name::4" or 
"xml:name::6", but not as a lua table.


When node #1 is passed to a \xmlfunction, the function gets a lua table 
as argument.


To write direct lua code instead of a xmlfunction you'd need a function 
to transform those "xml:name::..." into the lua tables representing the 
xml elements in the xml tree.


Which is what \xmlfunction does, so I wouldn't expect any performance gain.

Massi
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Re: [NTG-context] force index entries without page number

[mf]

Il 04/09/20 11:01, Henning Hraban Ramm ha scritto:




Am 03.09.2020 um 13:32 schrieb mf :

Use check=yes


But I need check=no, because my author has several entries like


Miller, Carolyne, born Princess of Sayn-Wittgenstein   123–125

Sayn-Wittgenstein, Carolyne of  see Miller, Carolyne


i.e. the reference target often has a different wording from the entry,
and thus \seeindex{Something}{} always inserts a "see".

Now I understand.
Since I'm working with XML, I'm using registers in an even stricter way: 
the text I'm indexing is actually the ID of a person in a database.

Something like this:

Carolyne

in the main text results in a \index[miller_carolyne]{v18in231}

In another place of the XML there's a record like this:

Miller, Carolyne ... 



The deeptextcommand parameter of \setupregister is set to a macro that 
takes the ID and gives back the text of the person.


Maybe in the database there's also another record like this:

sort-key="sayn_wittgenstein_carolyne">Sayn-Wittgenstein, Carolyne 
Miller, Carolyne


that results in a 
\seeindex[sayn_wittgenstein_carolyne]{Sayn-Wittgenstein, 
Carolyne}{Miller, Carolyne}




I don’t know how common these "passim" entries are in scientific works; maybe I 
could use

Mainperson  firstpage–lastpage

instead to avoid the major hassle of tricking the index mechanisms.

in that case \startindex...\stopindex or \startregister...\stopregister 
could be your friends.


Massi
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Re: [NTG-context] force index entries without page number

[mf]

Il 03/09/20 11:38, Henning Hraban Ramm ha scritto:

Hi Massi, thank you!


Am 03.09.2020 um 11:09 schrieb mf :

This should be exactly what you asked for:

\defineprocessor[passim][right=\quad{\it passim}]


I didn’t think to use processors.


You need them to get the "passim"; if you include it in the name, then 
you should adapt also the \seeindex like this:


\seeindex{Ramm, Hraban\quad{\it passim}}{}
\seeindex{Hraban}{Ramm, Hraban\quad{\it passim}}

(i did not test it, i don't know if it works, and anyway i don't like it 
because it's not clean)





\seeindex{passim->Ramm, Hraban}{}


No, this results in
"Ramm, Hraban passim see passim"



Only with check=yes, otherwise it works right.


And
\index{passim->Ramm, Hraban}
results in
"Ramm, Hraban passim 1"



No, see attachment page 2.


I.e. I’m still looking for an index entry without "see" or page number.



\placeindex[check=no]


This is essential for references to not (exactly) existing entries, I forgot 
the option existed.



Use check=yes

Massi


force-index-entries-without-pagenumber.pdf
Description: Adobe PDF document
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Re: [NTG-context] force index entries without page number

[mf]

Useful references I consulted to find a solution:

https://www.mail-archive.com/ntg-context@ntg.nl/msg88118.html
https://wiki.contextgarden.net/Registers#Processors

Massi
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Re: [NTG-context] force index entries without page number

[mf]

This should be exactly what you asked for:

\defineprocessor[passim][right=\quad{\it passim}]
\starttext
\samplefile{ward}\index{Ward, Peter}

\samplefile{sapolsky}\index{Sapolsky, Robert}

\seeindex{passim->Ramm, Hraban}{}
\seeindex{Hraban}{Ramm, Hraban}

\page

\placeindex[check=yes]

\page

\placeindex[check=no]

\stoptext

Massi
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Re: [NTG-context] force index entries without page number

[mf]

Il 03/09/20 10:17, Henning Hraban Ramm ha scritto:

Hi,

I’d like to have an (person) index entry like

Ramm, Hraban   passim

i.e. without actual page number.
How can I force that?

I also need to be able to refer to it like
\seeindex{Hraban}{Ramm, Hraban)




\starttext
\samplefile{ward}\index{Ward, Peter}

\samplefile{sapolsky}\index{Sapolsky, Robert}

\seeindex{Ramm, Hraban}{}
\seeindex{Hraban}{Ramm, Hraban}

\page

\placeindex[check=yes]

\page

\placeindex[check=no]

\stoptext


Massi
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Re: [NTG-context] strange behavior with \groupedcommand in recent versions of LMTX

[mf]

Thanks Hans,
this solves the problem I had with the new implementation of \wordright.
It's not exactly a problem of \wordright, but the combination with 
\groupedcommand.


Is \nextbox a new entry of latest versions?

I've seen also \nextboxwd, \nextboxht, etc.
So you can measure the next box to come in advance. Is it like that?

Is it a vbox when you're in vertical mode and a hbox when you are in 
horizontal mode?


Is this interpretation of \dowithnextbox in \dowhatever right?

\dowithnextbox {.1.} \.2. {.3.}
1 COMMAND = {\ifdim\wd\nextbox<\hsize...}
2 CSNAME  = \hbox
3 CONTENT = {#1}

Massi

Il 01/09/20 19:22, Hans Hagen ha scritto:
>
> fortunately there is a solution that takes less code:
>
> \unexpanded\def\whatever
>{\dosingleempty\dowhatever}
>
> \def\dowhatever[#1]%
>{\dowithnextbox
>   {\ifdim\wd\nextbox<\hsize
>  \wordright{\box\nextbox}%
>  \par
>\else
>  \par
>  \penalty1
>  \startalignment[flushright]\unhbox\nextbox\stopalignment
>\fi}\hbox}
>
> \starttext
>
>\input ward \whatever{same line, right}
>
>\blank
>
>\input ward \whatever{\input tufte }
>
> \stoptext
>
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[NTG-context] strange behavior with \groupedcommand in recent versions of LMTX

[mf]

Hello list,
this is a MWE that worked right in MkIV and in LMTX versions (at least) 
until April 22nd, 2020.


There's a macro, \wordorparagraphright, that takes one argument, makes a 
hbox with it and measures its width


- if its width is less than \hsize, then it calls \wordright

- if its width is more than \hsize, then it ends the current paragraph 
and starts a right-aligned paragraph with the argument


There are two implementations in the MWE: one is through 
\groupedcommand, and that's the one that worked once and doesn't now.



\unexpanded\def\groupedwordorparagraphright{\dosingleempty\dogroupedwordorparagraphright}
\def\dogroupedwordorparagraphright[#1]{\groupedcommand{\setbox\scratchbox\hbox\bgroup}
{\egroup\ifdim\wd\scratchbox < \hsize
\wordright{\unhbox\scratchbox}
  \else
\par\penalty1
\startalignment[flushright]\unhbox\scratchbox\stopalignment
  \fi}}

\unexpanded\def\wordorparagraphright#1{%
  \setbox\scratchbox\hbox{#1}
  \ifdim\wd\scratchbox < \hsize
\wordright{#1}
  \else
\par\penalty1
\startalignment[flushright]\unhbox\scratchbox\stopalignment
  \fi}

\starttext
  \type{\wordorparagraphright} should use \type{\wordright} if its argument
  is narrower than \type{\hsize}, or make a right-aligned paragraph with it
  when it's wider.

  Below, \type{\wordorparagraphright} is tested with a short text, that
  has enough room on the same line.
  \blank

  Reference:

  \input ward\wordright{same line, right}

  \blank

  Implementation as a grouped command (it doesn't work):

  \input ward\groupedwordorparagraphright{same line, right}

  \blank

  Normal implementation, not as a grouped command (it works):

  \input ward\wordorparagraphright{same line, right}
\stoptext


Unfortunately the grouped version is the one I need, because it's used 
in a register, and it would give an error if not defined through 
\groupedcommand:


\setupregister[myregister]
  [pageleft=\wordorparagraphright\bgroup,pageright=\egroup]

TIA,
Massi
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[NTG-context] pagecolumns: get the current column

[mf]

Hello list,
I'm using a 2-columns layout and I'd like to put some information in the 
margin.
I should put that information in the left margin when I'm in the left 
column, and in the right margin when I'm in the right column, to prevent 
the extra information overlapping the main text in the other column.


I found a useful counter in page-pcl.mkiv: \c_page_col_current.

Here's a MWE:

\unprotect
\def\curCol{\c_page_col_current}
\protect

\def\InfoInMargin#1{\doifelse{\the\curCol}{1}{\inmargin{#1}}{\inothermargin{#1}}}
\def\TestText{\InfoInMargin{\bf \the\curCol}\input ward 
\InfoInMargin{\bf \the\curCol} \input ward}

\starttext
  \startpagecolumns[n=2,distance=25mm]
  \dorecurse{5}{\TestText\par}
  \stoppagecolumns
\stoptext

\c_page_col_current works most of the time, but unfortunately it tells 
you the current column before the lines of a paragraph get distributed 
over columns.


So sometimes it fails. You can see that in the MWE: the bold "1" between 
columns in the upper part of the page. It should be a bold "2" in the 
right margin.


Is there a better way to read the current column?

Thanks,
Massi
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Re: [NTG-context] \startplacefigure and \startframedtext in lmtx

[mf]

Il 10/06/20 17:30, Hans Hagen ha scritto:

On 6/9/2020 11:04 AM, Otared Kavian wrote:

Hi all,

I just noticed that in lmtx, the commands \startplacefigure and 
\startframedtext, when used together, do not behave in the same way as 
they do in mkiv.

I wonder whether this is a permanent change or rather a buglet.

I found a fix around the issue, but since in my document I have a 
certain number of cases where such combinations are used, I woul dlike 
to be sure to not make a mistake by changing all the instances… Here 
is an example:


%% begin figure-framedtext.tex
\useMPlibrary[dum]
\defineexternalfigure[dummy]

\starttext
\startplacefigure[location=left,number=no,title={}]
\externalfigure[dummy][width=.45\textwidth]
\stopplacefigure
\dontleavehmode % if this is commented out then the text and the 
figure are placed on top of each other

\startframedtext[frame=off]
\input ward.tex
\stopframedtext
\stoptext
%% end figure-framedtext.tex

In the above example the fix is to add \dontleavehmode between the 
figue and the framedtext. If one comments out that line then the issue 
can be seen.


Thanks in advance for any help: Otared K.

can others confirm this

This is LuaMetaTeX, Version 2.06.07

system  > ConTeXt  ver: 2020.06.10



Seems OK to me.

I get the same result with LuaTeX+MkIV 2020-05-08 and LMTX 2020-06-10, 
even commenting out \dontleavehmode.


The only difference is the figure color: blue for LMTX, yellow for MkIV.

Massi
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Re: [NTG-context] accessing xml element attributes in lua, how, if you do not want to use the .at scheme?

[mf]

Il 09/06/20 15:31, Gerben Wierda ha scritto:
I’ve been trying to find out how I can access XML node 
properties/attributes in lua other than via the .at syntactic scheme but 
using the property/attribute name as a string.


E.g., currently I do:

someVar = someNode.at.someProperty

but I would like to do something /like/

someVar = someNode[“someProperty”] or someNode.attribute(“someProperty”) 
or something where I can use the string version of the 
properties/attribute name.


It’s probably possible (after all these are all dynamic structures that 
come from data), but how exactly?




local prop = "someProperty"
someVar = someNode.at[ prop ]

Massi
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Re: [NTG-context] Inkscape command line arguments have changed

[mf]

Il 19/05/20 20:50, Thangalin ha scritto:

Minor correction:

\startluacode
figures.programs.inkscape={
   command="inkscape",
   pdfargument=[[
 "%oldname%"
 --export-dpi=600
 --export-type=pdf
 --export-filename="%newname%"
   ]],
   pngargument=[[
 "%oldname%"
 --export-dpi=600
 --export-type=png
 --export-filename="%newname%"
   ]],
}
\stopluacode

Still doesn't work, though. ConTeXt persists with using --export-pdf=...
Cheers!



The latest version of ConTeXt should detect Inkscape's version and adapt 
the command line options accordingly (I tested it successfully on Debian 
64 Buster + Inkscape 0.92 and Debian 64 Sid + Inkscape 1.0rc).


Next year's versions will no longer detect Inkscape's version and will 
use the newer syntax.


See https://wiki.contextgarden.net/SVG

This topic has already been discussed in this thread:
https://www.mail-archive.com/ntg-context@ntg.nl/msg94153.html

Massi
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Re: [NTG-context] Problem including svg files with Inkscape 1.0~rc1-4

[mf]

Il 30/04/20 17:21, Hans Hagen ha scritto:

On 4/30/2020 3:15 PM, mf wrote:

Il 30/04/20 14:09, Romain Diss ha scritto:

Hi,

The last release candidat of Inkscape (1.0~rc1-4 on my Debian sid)
doesn't provide the `--export-pdf=` option anymore. So context can not
convert svg files into the corresponding `m_k_i_v_*` pdf.

It seems that the `--export-filename=` option does the job.

Thank in advance.



The command line syntax has changed in version 1. See this:

http://wiki.inkscape.org/wiki/index.php/Release_notes/1.0#Command_Line

So it's --export-filename in Inkscape 1.00, and --export-pdf in 
previous versions.


I tried to specify both options with Inkscape 0.92 hoping the wrong 
one would be ignored, without success; you get only a warning, not an 
error, but the conversion fails anyway.


To make ConTeXt work with both versions, it should run "inkscape 
--version" before doing the actual conversion, to decide the right 
option.


If the conversion you need is done by

tex/texmf-context/scripts/context/ruby/graphics/inkscape.rb

you should edit that file and replace "--export-pdf" with 
"--export-filename".


There are two other files where that option is used:

tex/texmf-context/tex/generic/context/luatex/luatex-fonts-merged.lua
tex/texmf-context/tex/context/base/mkiv/font-ocl.lua

it's font-related code; if you need it, do the same replacement of 
"--export-pdf" in those two files and then remake the format with


context --make

and the export to pdf will work with Inkscape 1.00.
But it won't work with Inkscape 0.92.
As I don't wan to waste code for testing the version, when do we change 
this? Now? I downloaded version 1 so it is available for all platforms.




1.0 is a release candidate. Romain is using the unstable version of 
Debian (sid), so he's using Inkscape 1.00rc.


Anyway Inkscape 0.92 will be around for some time, so a better solution 
would be defaulting to the export option of the current version of 
Inkscape unless the user sets an environment variable (INKSCAPE_VERSION?).


So a test of an environment variable instead of spawning a process to 
run "inkscape --version".


Massi
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Re: [NTG-context] Problem including svg files with Inkscape 1.0~rc1-4

[mf]

Il 30/04/20 14:09, Romain Diss ha scritto:

Hi,

The last release candidat of Inkscape (1.0~rc1-4 on my Debian sid)
doesn't provide the `--export-pdf=` option anymore. So context can not
convert svg files into the corresponding `m_k_i_v_*` pdf.

It seems that the `--export-filename=` option does the job.

Thank in advance.



The command line syntax has changed in version 1. See this:

http://wiki.inkscape.org/wiki/index.php/Release_notes/1.0#Command_Line

So it's --export-filename in Inkscape 1.00, and --export-pdf in previous 
versions.


I tried to specify both options with Inkscape 0.92 hoping the wrong one 
would be ignored, without success; you get only a warning, not an error, 
but the conversion fails anyway.


To make ConTeXt work with both versions, it should run "inkscape 
--version" before doing the actual conversion, to decide the right option.


If the conversion you need is done by

tex/texmf-context/scripts/context/ruby/graphics/inkscape.rb

you should edit that file and replace "--export-pdf" with 
"--export-filename".


There are two other files where that option is used:

tex/texmf-context/tex/generic/context/luatex/luatex-fonts-merged.lua
tex/texmf-context/tex/context/base/mkiv/font-ocl.lua

it's font-related code; if you need it, do the same replacement of 
"--export-pdf" in those two files and then remake the format with


context --make

and the export to pdf will work with Inkscape 1.00.
But it won't work with Inkscape 0.92.

Massi
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Re: [NTG-context] offset for background overlay

[mf]

Or maybe a method in MP to set the bounding box of the resulting overlay?


setbounds in combination with leftenlarged, topenlarged etc.


Thanks Wolfgang, this is the kind of solution I was looking for:

\startuseMPgraphic{cell:triangle}
  path p ; p := unittriangle rotated 90 xscaled 2.5 OverlayWidth 
yscaled 2.5 OverlayHeight ;

  draw p withcolor red ;
  setbounds currentpicture to p topenlarged 6mm ;
\stopuseMPgraphic
\defineoverlay[triangle][{\uniqueMPgraphic{cell:triangle}}]
\starttext
\bTABLE[frame=off]
  \bTR
\bTD[nx=2,align=middle,background=triangle] \dontleavehmode a\crlf 
text \eTD

  \eTR
  \bTR[toffset=1mm]
\bTD left \eTD
\bTD right \eTD
  \eTR
  \bTR
\bTD another \eTD
\bTD row \eTD
  \eTR
\eTABLE
\stoptext

Thanks also for the explanation of backgroundoffset: it's an offset 
relative only to the background, and it moves in the opposite direction 
of the content offset of \framed.


Looks like \framed[...,offset=VALUE,backgroundoffset=frame,...] is 
equivalent to \framed[...,offset=VALUE,backgroundoffset=-VALUE,...].


I tried to add something to the WIKI to show how it works, but the 
previews I got were not consistent with what I'm obtaining on my PC 
(with LMTX and "context --luatex"), so I gave up.


Massi
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Re: [NTG-context] offset for background overlay

[mf]

Thanks Hans and Wolfgang.

@Wolfgang: your solution is clearer, but unfortunately it works only for 
this MWE. In the real case the triangle extends over 2 rows, but the 
table has more than 2 rows.
I tried grouping the first two rows in a 
\bTABLEbody[background=triangle], but it doesn't work.


@both: \setupoverlay[hoffset=...,voffset=...]?
\setupframed[backgroundhoffset=...,backgroundvoffset=...] (\bTD inherits 
from \framed)?

Or maybe a method in MP to set the bounding box of the resulting overlay?

\setupframed has already a backgroundoffset option, whose value can be:

- a DIMENSION (an offset that is both horizontal and vertical)

- a "frame": what does it mean? (I looked into pack-rul.mkiv, with no 
results)


Massi

Il 11/04/20 20:11, Wolfgang Schuster ha scritto:

Hans Hagen schrieb am 11.04.2020 um 19:41:

On 4/11/2020 4:15 PM, mf wrote:

Hello list,
this MWE is a simplified version of a real case:

\startuseMPgraphic{cell:triangle}
   path p ; p := unittriangle rotated 90 xscaled 2.5 OverlayWidth 
yscaled 2.5 OverlayHeight ;

   draw p withcolor red ;
\stopuseMPgraphic
\defineoverlay[triangle][{\uniqueMPgraphic{cell:triangle}}]
\starttext
\bTABLE[frame=off]
   \bTR
 \bTD[nx=2,background=triangle,align=middle] \dontleavehmode 
a\crlf text \eTD

   \eTR
   \bTR[toffset=1mm]
 \bTD left \eTD
 \bTD right \eTD
   \eTR
\eTABLE
\stoptext

here's a very ugly solution

\startuseMPgraphic{cell:triangle}
 fill llcorner OverlayBox
 -- lrcorner OverlayBox
 -- (center bottomboundary OverlayBox shifted 
(0,\MPy{foo:2}-\MPh{foo:2}+\MPd{foo:2}-\MPy{foo:1}))

 -- cycle
 withcolor red ;
 setbounds currentpicture to OverlayBox ;
\stopuseMPgraphic

\defineoverlay[triangle][{\uniqueMPgraphic{cell:triangle}}]

\starttext

\bTABLE[frame=off]
   \bTR
\bTD[nx=2,align=middle,height=0pt,background=triangle]\xypos{foo:1}\eTD
   \eTR
   \bTR
 \bTD[nx=2,align=middle] \dontleavehmode a\crlf text \eTD
   \eTR
   \bTR[toffset=1mm]
 \bTD \hpos{foo:2}{\strut} left \eTD
 \bTD right \eTD
   \eTR
\eTABLE

\stoptext

it is probably possible to get some info otherwise (more efficient) if 
really needed (if we add some helpers)


Simpler, put the table in a frame.

\startuseMPgraphic{cell:triangle}
   draw llcorner OverlayBox
     -- lrcorner OverlayBox
     -- center topboundary OverlayBox
     -- cycle
    withcolor red ;
\stopuseMPgraphic

\defineoverlay[triangle][{\uniqueMPgraphic{cell:triangle}}]

\starttext

\startframed[frame=off,offset=1ex,loffset=2ex,roffset=2ex,toffset=2ex,background=triangle] 


     \bTABLE[frame=off]
     \bTR
     \bTD[nx=2,align=middle] a\crlf text \eTD
     \eTR
     \bTR[toffset=1mm]
     \bTD left \eTD
     \bTD right \eTD
     \eTR
     \eTABLE
\stopframed

\stoptext

Wolfgang

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[NTG-context] offset for background overlay

[mf]

Hello list,
this MWE is a simplified version of a real case:

\startuseMPgraphic{cell:triangle}
  path p ; p := unittriangle rotated 90 xscaled 2.5 OverlayWidth 
yscaled 2.5 OverlayHeight ;

  draw p withcolor red ;
\stopuseMPgraphic
\defineoverlay[triangle][{\uniqueMPgraphic{cell:triangle}}]
\starttext
\bTABLE[frame=off]
  \bTR
\bTD[nx=2,background=triangle,align=middle] \dontleavehmode a\crlf 
text \eTD

  \eTR
  \bTR[toffset=1mm]
\bTD left \eTD
\bTD right \eTD
  \eTR
\eTABLE
\stoptext

The triangle is used as background of the 2-column wide cell of the 
first row.


I want the triangle to go around the second row too, as if it were a 
frame for all the 3 cells. It means that it should be shifted down a bit.


So I tried this:

\startuseMPgraphic{cell:triangle}
  path p ; p := unittriangle rotated 90 xscaled 2.5 OverlayWidth 
yscaled 2.5 OverlayHeight ;

  draw p shifted (0,-3mm) withcolor red ;
\stopuseMPgraphic
...

but it does not work, because the content of the background is centered 
on the cell, so "shifted (0,-3mm)" has no effect.


The only solution I found is drawing something above the triangle with a 
neutral color, so that the whole background is centered in the cell and 
the red triangle goes down:


\startuseMPgraphic{cell:triangle}
  path p ; p := unittriangle rotated 90 xscaled 2.5 OverlayWidth 
yscaled 2.5 OverlayHeight ;

  fill p shifted (0,6mm) withcolor white ; % only to move the next one down
  draw p withcolor red ;
\stopuseMPgraphic
\defineoverlay[triangle][{\uniqueMPgraphic{cell:triangle}}]
\starttext
\bTABLE[frame=off]
  \bTR
\bTD[nx=2,background=triangle,align=middle] \dontleavehmode a\crlf 
text \eTD

  \eTR
  \bTR[toffset=1mm]
\bTD left \eTD
\bTD right \eTD
  \eTR
\eTABLE
\stoptext

It's a dirty trick. I'm sure there's a cleaner way.
Does anybody know it?

Thanks,
Massi
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Re: [NTG-context] Using Lua files in project structure

[mf]

Il 05/04/20 15:00, Jairo A. del Rio ha scritto:
I'm writing a project in ConTeXt MKIV and I want to load some (pure) Lua 
libraries and bindings (defining \ctxlua and the like). For instance, I 
have the file foo.lua with some macros and I want to use them in my 
project. Something like this:


\startproject project
%\component foo.lua %This does not work
%\environment foo.lua %This does not work
%\input foo.lua %This does not work
%\directlua{dofile("foo.lua")} %This does not work even when the project 


\directlua{require("foo")}

or

\startluacode
  require("foo")
\stopluacode


file and foo.lua are in the same folder.
\stopproject

What should I do? Thank you in advance.


Best wishes,
Massi
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Re: [NTG-context] Bug (Lua) ?

[mf]

Il 19/03/20 11:20, Fabrice Couvreur ha scritto:

Hi,
this file did not pose any problems but today yes.
Thank you.
Fabrice

\starttext
\startluacode
local letters_1 = { "A", "B", "C", "D", "E", "F", "G", "H", "I", "J" }
local letters_2 = { "1", "Année", "1998", "1999", "2000", "2001", "2002",
"2003", "2004", "2005","2006" }
context.startxtable({"align={middle,lohi},
width=1.2cm,offset=0.8ex,bodyfont=9pt"})



context.startxtable( { align = "middle,lohi", width = "1.2cm", offset = 
"0.8ex", bodyfont = "9pt" } )


The argument is a lua table. Values are usually strings.


context.startxrow({"background=color,backgroundcolor=green"})


context.startxrow( { background = "color", backgroundcolor = "green" } )

... and so on.

Best wishes,
Massi
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Re: [NTG-context] Issue with rendering arrows in lmtx

[mf]

Il 17/03/20 15:51, Jan-Erik Hägglöf ha scritto:

Hi All!

When I invoke this command

\startMPcode
picture p ; p := lmt_svg [ filename ="pil.svg" ];
draw p;
\stopMPcode

I get weird results, the arrowhead points in wrong direction and is very 
tiny compared to the size it was meant to have.




Keep in mind this:

- SVG rendering in metapost started as an experiment and it is still 
under development, even if you can already do some very interesting 
things with it


- inkscape SVG is different from standard SVG, so the first thing you 
can try is saving as plain SVG


- markers are borderline elements, even Inkscape did not support them 
well for a long time; i.e. i noticed a strange behavior in rectangles 
with slightly rounded corners


- in general, try using the simplest elements: i.e. transform 
rectangles, ellipses, markers?, etc. into paths


- you could experience problems also with text, especially with less 
common or uninstalled fonts


Best wishes,
Massi
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Re: [NTG-context] Need help processing XML in luacode

[mf]

In your tex file, try this:

\startluacode
settings = {}
docstruktur = {}
doclistfile = "doclist.xml"

local striplines = utilities.strings.striplines
local xmltext= xml.text

cropstring = function(s)
  -- return striplines(s, "prune and collapse")
  return striplines(s)
end

doc = xml.load(doclistfile, settings)

for v in xml.collected(doc,"/doclist/psdoc/") do
--  print (v)
--  print (xml.text(v,"/docnr"))
  local docnr = cropstring(xml.text(v,"/docnr"))
  print (docnr)
  local docname = cropstring(xmltext(v,"/docname"))
  -- es kann mehrere DOCAN geben!
  local docan = (cropstring(xmltext(v,"/docan")))
  local docverantwortlich = (cropstring(xmltext(v,"/docverantwortlich")))
  docstruktur[docnr]={
docname = docname,
docan = docan,
docverantwortlich = docverantwortlich
  }
--  docstruktur[docnr]["docname"] = docname
--  docstruktur[docnr]["docan"] = docan
--  docstruktur[docnr]["docverantwortlich"] = docverantwortlich
end
\stopluacode

hoping it helps,
Massi
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Re: [NTG-context] Up-to-date documentation / tutorials. Where?

[mf]

Is there not a simple place to get all the up-to-date documentation?



If you install ConTeXt from

http://www.pragma-ade.nl/install.htm

in the installation tree you'll find docs under

tex/texmf-context/doc/context/documents/

There you'll always find the docs at their last revision.

Massi
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Re: [NTG-context] metapost: remapping colors of an SVG picture

[mf]

Il 18/02/20 19:07, Jan U. Hasecke ha scritto:

Am 18.02.20 um 14:53 schrieb Hans Hagen:


\setupcolors[rgb=no]
\startMPcode
     draw lmt_svg [ filename = "sample.svg" ] ;
\stopMPcode

I get this error.

! Not implemented: (unknown numeric)=(string).

]
<*> ... ; p := lmt_svg [ filename = "sample.svg" ]

That's because it's LMTX only (the "lmt" prefix of "lmt_svg" should 
stand for "luametatex").


You find documentation about that in LMTX docs, luametafun.pdf, chapter 
"SVG".


Best wishes,

Massi

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[NTG-context] metapost: remapping colors of an SVG picture

[mf]

Hello list,
I tried this:

\starttext
\startMPcode
picture p ; p := lmt_svg [ filename = "sample.svg" ] ;
draw p ;
color black_rgb ; black_rgb := ( 0, 0, 0 ) ;
color red_rgb   ; red_rgb   := ( 1, 0, 0 ) ;
remapcolor( black_rgb, red_rgb ) ;
recolor p ;
draw p shifted ( bbwidth(p) + 5mm, 0) ;
\stopMPcode
\stoptext

but recolor gives an error:
metapost log> >> picture
metapost log> ! Wrong picture color model: redpart of grey object.
metapost log>  _f_:=(redpart(EXPR0),
metapost log> 
greenpart(EXPR0),bluepart(EXPR0));if.bou...

metapost log>
metapost log> repathed->...fi;fi;else:addto._p_.also.i;fi;endfor
metapost log> 
;setbounds._p_.to._b_;_p_

metapost log> 
metapost log>;
metapost log> <*> ...apcolor( black_rgb, red_rgb ) ; recolor p ;
metapost log> 
draw grayed p shifted ( b...

metapost log>

My goal is to remap colors of an SVG image, like this:

\starttext
\startMPcode
picture p ; p := lmt_svg [ filename = "sample.svg" ] ;
draw p ;
color black_rgb  ; black_rgb  := ( 0, 0, 0 ) ;
cmykcolor black_cmyk ; black_cmyk := ( 0, 0, 0, 1 ) ;
remapcolor( black_rgb, black_cmyk ) ;
recolor p ;
draw p shifted ( bbwidth(p) + 5mm, 0) ;
\stopMPcode
\stoptext

It relates to a recent thread in the mailing list about color management.
It's an attempt to use inkscape-made SVG graphics inside a CMYK 
workflow, without using color management.


Naturally it would work under some constraints, but there's a lot of 
graphics you can do with Inkscape that falls inside these:
- the number of colors in the input SVG should be limited, so that every 
color gets converted

- no embedded bitmaps, only vector graphics
- perhaps some other constraints on gradients, transparency, etc.

A good alternative would be a remapper based on a custom lua function 
like this:


function rgb2cmyk( r, g, b )
  ...
  return c, m, y, k
end

Massi
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Re: [NTG-context] upload

[mf]

if you fetch from the web site you need to use /latest as we no longer 
have lpha, beta current ... maybe somthing got messed up in the git 
sync, i don't know



The git mirror is in sync again.
Thanks to anybody working on it.

Best wishes,
Massi
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Re: [NTG-context] upload

[mf]

Il 11/02/20 17:00, Hans Hagen ha scritto:

Hi,

I uploaded a fresh lmtx. There is some new stuff in there:



I'm a little bit confused about versions.

1) GIT MIRROR

The last commit in the branch "beta" is 2020-01-26 18:37:00.

I've seen no update since your "upload" message (the one i'm replying to).

(Hans, I know it's not you updating it)

2) CONTEXT MKIV

I've just updated the "latest" ConTeXt MkIV, i mean the one you update 
with first-setup.sh ...


Once updated, this is the output of "context --version":

mtx-context | ConTeXt Process Management 1.03
mtx-context |
mtx-context | main context file: 
/home/massi/context/latest/tex/texmf-context/tex/context/base/mkiv/context.mkiv

mtx-context | current version: 2020.01.30 14:13
mtx-context | main context file: 
/home/massi/context/latest/tex/texmf-context/tex/context/base/mkiv/context.mkxl

mtx-context | current version: 2020.01.30 14:13

3) LMTX

After ./install.sh and setting the PATH, "context --version" gives:

mtx-context | ConTeXt Process Management 1.03
mtx-context |
mtx-context | main context file: 
/home/massi/context/lmtx/tex/texmf-context/tex/context/base/mkiv/context.mkiv

mtx-context | current version: 2019.07.24 11:31
mtx-context | main context file: 
/home/massi/context/lmtx/tex/texmf-context/tex/context/base/mkiv/context.mkxl

mtx-context | current version: 2020.02.11 16:41

"2020.02.11 16:41" for MKXL looks right to me, since it's the version 
you are talking of in your message.


But what about "2019.07.24 11:31" for MKIV? It's even older than the one 
you get with first-setup.sh.


Maybe it's the version when MKXL and MKIV split, and "2020.01.30 14:13" 
is the latest version of MKIV with the backporting of some of the 
enhancements that took place in MKXL. Is it like that?


Best greetings,
Massi
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Re: [NTG-context] Adjust kern for one character

[mf]

Il 22/12/19 22:19, Rik Kabel ha scritto:

List,

Is there a way in ConTeXt to adjust the left-side kern for one 
character? The cap J in the font I am using is being set too close to 
the preceding characters and I would rather not insert a thinspace 
before each. (Inserting a thinspace is sufficient, but finer control is 
welcome.)



\definecharacterspacing[distantJ]
\setupcharacterspacing[distantJ]["004A][left=.15,alternative=1] % 004A 
is the unicode hex index of letter J

\starttext
  normal: AJB\par
  \setcharacterspacing[distantJ] more space on the left: AJB\par
  \resetcharacterspacing normal again: AJB\par
\stoptext
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Re: [NTG-context] blank[\lineheight] works with LMTX, fails with MkIV

[mf]

Il 20/12/19 20:04, Rik Kabel ha scritto:


MkIV fails with

tex error   > tex error on line 3 in file 
c://Users/micro/Desktop/fail.tex: ! Missing \endcsname inserted

given the following mwe:

\starttext
a
\blank[\lineheight]
z
\stoptext

Not critical as there are lots of ways to do this, but it seems 
strange that it should work in one and not the other.




\starttext
a
\blank[\the\lineheight]
z
\stoptext

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Re: [NTG-context] setting the color of cropmarks

[mf]

This is a dirty hack to change the color of the crop marks and the page 
number at the corner of a page when \setuplayout[marking=on].


Edit the file:

tex/texmf-context/metapost/context/base/mpiv/mp-crop.mpiv

in the distribution, changing two lines:

- (here i'm reproducing only the last part of the file) --

def page_marks_add_lines(expr width, height, length, offset, nx, ny, 
boxtoo) = % todo: namespace


pickup pencircle scaled 1/2 ; interim linecap := squared ; interim 
linejoin := butt ;


path page ; page := fullsquare xscaled width yscaled height ;
path more ; more := page enlarged (offset+length/2,offset+length/2) ;

%draw crop_marks_lines(page,length,offset,nx,ny,boxtoo) ;
draw crop_marks_lines(page,length,offset,nx,ny,boxtoo) withcolor 
(0,0,0,1) ;


setbounds currentpicture to page ;

enddef ;

def page_marks_add_number(expr width, height, length, offset, n) = % 
todo: namespace


pickup pencircle scaled 1/2 ; interim linecap := squared ; interim 
linejoin := butt ;


path page ; page := fullsquare xscaled width yscaled height ;
path more ; more := page enlarged (offset+length/2,offset+length/2) ;

for s=llcorner more, lrcorner more, ulcorner more, urcorner more :
%draw textext(decimal n) shifted s ;
draw textext(decimal n) shifted s withcolor (0,0,0,1) ;
endfor ;

setbounds currentpicture to page ;

enddef ;

---

You must add "withcolor (0,0,0,1)" before the final semicolon to two 
lines: the ones that i commented out with a leading "%".


In case you wanted crop marks in all the CMYK channels, add "withcolor 
(1,1,1,1)".


Once you modify the file, remake the format with

context --make

A parametric solution would let you define a "registration" color in 
ConTeXt, then map it to the corresponding "withcolor" instruction in 
mp-crop.mkiv. I'm sure there are already functions to do that mapping.
It's the difficult part (at least for me) when Hans talks about adding 
"some control over these cropmark colors by using symbolic names".


Massi
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Re: [NTG-context] setting the color of cropmarks

[mf]

There is no option to change the color for the rules and the only option 
you have is to use color conversion.


\setupcolors[cmyk=yes,rgb=no]

I do have this setup, but it produces grayscale crop marks.

I was told by two different printshops that grayscale raises problems 
with recent versions of PDF software (verification? imposition? I've not 
asked), that complains about that, because it treats grayscale as RGB, 
splitting it on C, M and Y channels, instead of mapping it only to the K 
channel.




If you need more control you can create your own marks and add them as 
background for the page.


I've seen there's something about that in the mailing list history. I'll 
look into that.


BTW, the MP file producing the marks is

metapost/context/base/mpiv/mp-crop.mpiv

Massi
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Re: [NTG-context] setting the color of cropmarks

[mf]

Il 19/12/19 18:07, Henning Hraban Ramm ha scritto:

Am 2019-12-19 um 16:41 schrieb mf :


Hello list,

\setuplayout[marking=on] typesets crop marks that are in grayscale black.

Can I change their color, in particular into a CMYK black (0,0,0,1.0)?


There’s no parameter, and I don’t understand how the markings are set in 
https://source.contextgarden.net/tex/context/base/mkiv/strc-mar.mkiv


No, that's about markings, a different thing.
I think the right file is page-mrk.mkiv.
The crop marks are made with MP.
I'm looking into it...



Maybe you see more… There’s an example for custom marks at the bottom.

It would also make sense to use CMYK register color (1,1,1,1).


I do agree.

Massi
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[NTG-context] setting the color of cropmarks

[mf]

Hello list,

\setuplayout[marking=on] typesets crop marks that are in grayscale black.

Can I change their color, in particular into a CMYK black (0,0,0,1.0)?

Thanks,
Massi
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Re: [NTG-context] changing alignment inside a paragraph

[mf]

Il 11/12/19 21:25, Wolfgang Schuster ha scritto:

\starttext

\startbuffer
This is the text of an index term, that is normally justified,
but I'd like the page numbers to be flushed to the right from
their second line\par
\startalignment[flushright]
\ifdim\dimexpr\hsize-\lastlinewidth\relax>2\emwidth
     \blank[overlay]
%   simple solution but doesn't indent the numbers on the following lines
%   \hskip\dimexpr\lastlinewidth+\emwidth\relax
     \parshape 2
     \dimexpr\lastlinewidth+\emwidth\relax 
\dimexpr\hsize-\lastlinewidth-\emwidth\relax

     \emwidth \dimexpr\hsize-\emwidth\relax
\else
     \parshape 1 \emwidth \dimexpr\hsize-\emwidth\relax
\fi
34, 57, 101-104, 276, 345, 401, 403, 512.
\stopalignment
\stopbuffer

\dorecurse
   {10}
   {\hsize\dimexpr.75\textwidth-#1\emwidth\relax
    \getbuffer
    \page}

\stoptext



Thanks Wolfgang.

I wrote a better version. I still have a couple of questions.
In the lines:

\iffirstargument
  \getparameters[PIT!][test=off,margin=1em,distance=1em,minwidth=1em,#1]
\else
  \getparameters[PIT!][test=off,margin=1em,distance=1em,minwidth=1em,]
\fi

i would avoid writing the default values twice; i tried something like:

\getparameters[PIT!][test=off,margin=1em,distance=1em,minwidth=1em,\iffirstargument#1\fi]

but it doesn't work.

For the second question, see the first item of page 3: i think the 
\lastlinewidth fails because there's a page break. From supp-box.lua:


implement {
name= "lastlinewidth",
actions = function()
local head = tex.lists.page_head
-- list dimensions returns 3 value but we take the first
context(head and 
getdimensions(getlist(find_tail(tonut(tex.lists.page_head or 0)

end
}

I think that's because page_head is reset in the page break.
Is there a way to prevent that?

Massi

--
\unprotect
\def\PlaceIndexTerm{\dosingleempty\doPlaceIndexTerm}
\def\doPlaceIndexTerm[#1]#2#3{%
\iffirstargument
  \getparameters[PIT!][test=off,margin=1em,distance=1em,minwidth=1em,#1]
\else
  \getparameters[PIT!][test=off,margin=1em,distance=1em,minwidth=1em,]
\fi
#2\par
\startalignment[flushright,stretch]
\ifdim\dimexpr\hsize-\lastlinewidth\relax > 
\dimexpr\PIT!distance+\PIT!minwidth\relax

  \blank[overlay]
  \parshape 2
  \dimexpr\lastlinewidth+\PIT!distance\relax 
\dimexpr\hsize-\lastlinewidth-\PIT!distance\relax

  \PIT!margin \dimexpr\hsize-\PIT!margin\relax \doif{\PIT!test}{on}{\red}
\else
  \page[no]
  \parshape 1 \PIT!margin \dimexpr\hsize-\PIT!margin\relax 
\doif{\PIT!test}{on}{\darkgreen}

\fi
#3\par
\stopalignment}
\protect

\setupalign[stretch]

\starttext

\def\Text{This is the text of an index term, that is normally justified,
but I'd like the page numbers to be flushed to the right from
their second line}

\def\Pages{34, 57, 101-104, 276, 345, 401, 403, 512.}

\type{\PlaceIndexTerm[margin=1em,distance=1em,minwidth=1em]{text}{pages}}
\startitemize
\item margin:
  the left margin of the lines made only of page numbers
\item distance:
  the distance of the first page number from the last word of the text
\item minwidth:
  the shortest acceptable space at the end of the text to try to 
start page numbers there

\stopitemize

\page

\dorecurse
  {23}
  {\hsize=\dimexpr5cm+#1\emwidth\relax
   #1: \the\hsize\par
   \PlaceIndexTerm[test=on]{\Text}{\Pages}}

\stoptext
--
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Re: [NTG-context] changing alignment inside a paragraph

[mf]

This is a good-enough solution to my problem:

\setupalign[stretch]

\starttext

\def\Text{This is the text of an index term, that is normally justified,
but I'd like the page numbers to be flushed to the right from
their second line}

\def\Pages{34, 57, 101-104, 276, 345, 401, 403, 512.}

\type{\PlaceIndexTerm} has 6 parameters:
\startitemize[n]
\item the main text
\item the pages' numbers
\item the text width
\item the left margin of the lines made only of page numbers
\item the width of the separator (an hbox) before the first page number, 
when there's room

  in the last line of the text
\item the minimum accepted space left at the end of the last line of 
text, to put a page number

\stopitemize

\def\PlaceIndexTerm#1#2#3#4#5#6{%
\newdimen\TextWidth \TextWidth=#3
\newdimen\SBPN \SBPN=#5 % space before page numbers
\newdimen\PagesIndentation \PagesIndentation=#4
\newdimen\MSLLL \MSLLL=#6 % minimum space left on last line
\parshape 1 0pt \TextWidth #1\par
\newdimen\LLW \LLW=\lastlinewidth
\page[no]
\ifdim \dimexpr\TextWidth-\LLW-\SBPN > \MSLLL 
\blank[-\the\lineheight,fixed]\fi

\startalignment[flushright,stretch]
\ifdim \dimexpr\TextWidth-\LLW-\SBPN > \MSLLL
\parshape 2
\LLW \dimexpr \TextWidth - \LLW
\PagesIndentation \dimexpr \TextWidth - \PagesIndentation \red
\else
\parshape 1 \PagesIndentation \dimexpr \TextWidth - \PagesIndentation 
\darkgreen

\fi
\noindent\ifdim \dimexpr\TextWidth-\LLW-\SBPN > \MSLLL\hbox to 
\SBPN{}\fi #2\par

\stopalignment}

\def\PlaceIndexTermDescribed#1#2#3#4#5#6{%
\newdimen\TW\TW=#3
\noindent{\tfx width={\bf \PtToCm{\the\TW}},
pages' left margin (2nd line)={\bf #4},
hbox before pages={\bf #5},\\%
min space left on last line of text={\bf #6}}\par
\blank[halfline]
\PlaceIndexTerm{#1}{#2}{#3}{#4}{#5}{#6}
\blank}

\page
\PlaceIndexTermDescribed{\Text}{\Pages}{3cm}{12pt}{1em}{12pt}
In this case there's no space left on the last line of text,
so the page numbers are flushed to the right, starting from
a new line.

\page
\PlaceIndexTermDescribed{\Text}{\Pages}{3.5cm}{12pt}{1em}{12pt}
Now the last line of text is short and there's room to start the page
numbers on the same line. The remainder of page numbers is flushed right,
with a (min) left margin of 12pt.\par
Actually, the page numbers are started in a new paragraph with a 
\type{\parshape}

that depends on the last line of the text; then the new paragraph is moved
upwards with a \type{\blank[-\the\lineheight,fixed]}.
A \type{\page[no]} before the \type{\blank} guarantees that
no page break occurs between text and numbers.

\page
\PlaceIndexTermDescribed{\Text}{\Pages}{4cm}{12pt}{1em}{12pt}

\page
\PlaceIndexTermDescribed{\Text}{\Pages}{4.5cm}{12pt}{1em}{12pt}

\page
\PlaceIndexTermDescribed{\Text}{\Pages}{5cm}{12pt}{1em}{12pt}

\page
\PlaceIndexTermDescribed{\Text}{\Pages}{5.5cm}{12pt}{1em}{12pt}

\page
\PlaceIndexTermDescribed{\Text}{\Pages}{6cm}{12pt}{1em}{12pt}

\page
\PlaceIndexTermDescribed{\Text}{\Pages}{6.5cm}{12pt}{1em}{12pt}

\page
\PlaceIndexTermDescribed{\Text}{\Pages}{7cm}{12pt}{1em}{12pt}

\page
\PlaceIndexTermDescribed{\Text}{\Pages}{7.5cm}{12pt}{1em}{12pt}

\page
\PlaceIndexTermDescribed{\Text}{\Pages}{8cm}{12pt}{1em}{12pt}
That \type{512} left on the last line is ugly, and we can trim the 
separator hbox
from \type{1em} to \type{.1em} to let all the page numbers fit in the 
last line:\par

\blank
\PlaceIndexTermDescribed{\Text}{\Pages}{8cm}{12pt}{.1em}{12pt}
or we could increase the left margin of the lines made only of page numbers
(to \type{3cm} in this case), to distribute the numbers better across 
the two lines:\par

\blank
\PlaceIndexTermDescribed{\Text}{\Pages}{8cm}{3cm}{1em}{12pt}

\page
\PlaceIndexTermDescribed{\Text}{\Pages}{8.5cm}{12pt}{1em}{12pt}

\page
\PlaceIndexTermDescribed{\Text}{\Pages}{9cm}{12pt}{1em}{12pt}

\page
\PlaceIndexTermDescribed{\Text}{\Pages}{9.5cm}{12pt}{1em}{12pt}
Increasing the left margin of the lines of page numbers gives a better 
result:\par

\blank
\PlaceIndexTermDescribed{\Text}{\Pages}{9.5cm}{4cm}{1em}{12pt}

\page
Full text width (third parameter set to \type{\textwidth}):\par
\blank
\PlaceIndexTermDescribed{\Text}{\Pages}{\textwidth}{12pt}{1em}{12pt}

\stoptext

(Thanks again to Wolfgang for answering my question)

Massi
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[NTG-context] changing alignment inside a paragraph

[mf]

Hello list, is there a way to achieve this?

\def\FlushRightFromNextLine{\relax}
\setupnarrower[left=0cm,right=11cm]
\setupalign[stretch]
\starttext
This is what I'd like to type in my source:\par
\blank
\type{This is the text of an index term, that is normally justified,
but I'd like the page numbers to be flushed to the right from
their second line \FlushRightFromNextLine 34, 57, 101-104, 276, 345, 
401-403.}\par

\blank
This is the normal result:\par
\blank
\startnarrower[right]
This is the text of an index term, that is normally justified,
but I'd like the page numbers to be flushed to the right from
their second line \FlushRightFromNextLine 34, 57, 101-104, 276, 345, 
401-403.

\stopnarrower
\blank
This is the expected result:\par
\blank
\startnarrower[right]
\parfillskip=0pt This is the text of an index term, that is normally 
justified,

but I'd like the page numbers to be flushed to the right from
their second line 34, 57,\par
\penalty1 % no page break in the middle of page numbers
\startalignment[flushright]
101-104, 276, 345, 401-403.\par
\stopalignment
\stopnarrower
\stoptext

The expected result is to be intended visually, because there might be 
no need to break the text into two paragraphs.


Thanks,
Massi
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Re: [NTG-context] ConTeXt as a service

[mf]

Il 22/11/19 08:43, Jan U. Hasecke ha scritto:

Am 20.11.19 um 18:10 schrieb Henning Hraban Ramm:

Hi!

I’m running ConTeXt on my web server e.g. to generate shipping forms for a 
customer.

As Hans said, it makes sense to use an asynchronous setup; in my case it’s 
celery/RabbitMQ behind Django.

You probably need to set a few environment variables: I find HOME, PATH, 
TEXROOT and TEXMFOS in my setup. I don’t know if you really need all of them, 
it’s already running for several years…
Also your web server process might only run binaries that belong to some 
user/group like wwwrun.

It won’t work in shared hosting, because you can’t install your own programs.


Generally this is correct. But there are providers such as the
Hostsharing cooperative where it is possible to install programs in a
shared hosting environment. We do it for years. ;-)


Otherwise: What kind of documentation do you need? Installing ConTeXt on a 
(web) server is not different from any other Linux system. Calling ConTeXt from 
a web application is not different from calling any other external program. The 
rest depends on your setup and web frameworks.


I am very interested in running ConTeXt as a service, too. I am still
nurturing the idea of a publishing cooperative for self publishers with
a Markdown --> Pandoc --> ConTeXt workflow with a nice web frontend. I
hope to make it to the next ConTeXt meeting to discuss it.



I'm using ConTeXt inside a Docker container.
The same container runs a Node+Express.js interface to accept documents 
and provide resulting PDFs, as well as job information while ConTeXt is 
typesetting a document.


That way i get:

- container isolation: i can have different ConTeXt versions between the 
container and the host (the same goes for other software)


- thanks to the Node+Express, a client-server workflow over a network

The problems arise when you need to move data to and from the container.
Docker lets you share a local filesystem path with the container, but 
that's not possible on a network (with the same performance of a local 
filesystem, i mean).


Maybe your sources are not too heavy, but your ConTeXt environments, 
graphics, fonts are probably heavier. So are PDFs produced by ConTeXt.


That's why i'm using a docker container image that preloads all the 
configuration files (.tex and .lua), graphics, fonts during image building.


It's not a generic, all-purpose ConTeXt container, it's tailored on a 
very specific kind of documents. That way the only things i'm moving 
around are XHTML sources and typeset PDFs.


Things get really complex if you want to use containers to scale up, 
having a whole battery of identical ConTeXt servers distributed in a cloud.
It's not my case, i have only one container in one physical server, 
reachable from many network clients.


Stateless containers are indistinguishable, but ConTeXt containers hold 
state: your documents and all the data that is needed to typeset them.


When you ask for a resulting PDF, only one specific container can answer 
you, unless that PDF has been put on a shared storage. But that could 
mean moving it over a network, adding latency and burden on the network.


Suppose you slightly modify your document and want to typeset it again.
Reusing the .tuc file of the previous version could save you some runs, 
but only the previous container knows about the .tuc file.
So pick one: run ConTeXt on the same container or move the .tuc file 
over the network to another one.


It's the general problem of managing state with containers.

Another question: previewing the result of typesetting.
When the PDF is in your directory, you can see it as soon as ConTeXt 
finishes a run.

I keep evince open on a file while i'm running ConTeXt locally.

When ConTeXt is working on a server, in the simplest setup you must wait 
until it finishes all the runs before you can download the PDF. That's 
the way i started.


Now i take a local copy of the PDF inside the container, every time a 
single run ends; that way you can download the PDF just after the first 
run. But it also means downloading your PDF n times, where n is the 
number of runs.


That's why i'm leveraging the Node+Express interface to provide a 
single-page preview: a rendering of a page at screen resolution, 
produced inside the container with pdftocairo; the image is also cached, 
so that it's updated only when a new PDF - from a new run - is ready.


Instead of downloading the PDF n times, i get a light and early preview 
of single pages. And the interface lets you download the whole PDF once 
it's done.


Massi
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Re: [NTG-context] ConTeXt as a service

[mf]

Il 23/11/19 13:02, Henning Hraban Ramm ha scritto:



Am 2019-11-23 um 08:12 schrieb Mojca Miklavec
:


Then you can use one of the online JS editors like CKeditor.\


Only if you spend an enormous amount of effort making sure that
the code is properly cleaned up rather than containing a gazillion
random html style tags which you can never reconstruct back into
some structured form.

(And yes, my impression is that Massi spent a huge amount of effort
in configuring the editor and cleaning up the mess. My company
didn't and ended up with sometimes literally every word in a
sentence using a different font size or style. They gave up on html
+ cke pretty soon, but couldn't be convinced that this was a bad
idea upfront.)


Indeed, an ongoing effort.
Markup should be mostly semantic, leaving the most of styling to ConTeXt
or CSS or whatever.
But then you must consider the features and limitations of the tools you
use.

CKEditor lets you define rules to specify what can enter your sources;
it's great, but it's essentially a HTML editor, not a semantic editor.
In CKE, the HTML is *the* document, not a representation of it inside a 
browser.


Prosemirror is the best editor i know, if you care about complete
control of what goes into your sources.
It's document agnostic, HTML is used only to represent the document in a 
browser. Your document could be JSON or markdown or whatever.


Prosemirror is actually an editor kit, not an editor:

- Tiptap editor combines Prosemirror with Vue.js

- wax-prosemirror instead combines Prosemirror with React.js

I'm developing on top of wax-prosemirror, which should be the next
version of the editor inside Editoria by Coko Foundation (Luigi posted a
couple of links in another reply of this thread).

Jure Triglav of Coko Foundation wrote a good post on open source 
collaborative editors:

https://juretriglav.si/open-source-collaborative-text-editors/


Don’t exaggerate. Or maybe your company didn’t think about which tags
are really necessary. A proper configuration that doesn’t allow
nonsense, even if users paste text from Word documents, is not such a
big effort.


Even though we started with a semantic tagging mindset, we always find
alien tags or wrong combinations of allowed tags in our sources.
It's not only pasting from Word or a web page, sometimes it's browsers'
plugins or different behaviors among different browsers. And bugs of my
code, of course.

I feel it's hard to exaggerate in paying attention to that, there's 
always something unwanted sneaking in.



I can’t remember which JS editor I used >10 years ago for the
editorial system of a city magazine, but I remember I only allowed a
few tags (authors weren’t allowed to use font and color settings) and
also run a HTML cleaner before saving. It was an effort until it
worked, but not that much.



We have filters to clean up a source before editing, rules inside a
CKE-based editor and filters to do other cleanups while saving.
We have quite a good control over sources, yet it's not complete.

A lot depends on the complexity of your documents: you start
simple and do some assumptions; later you want to increase complexity,
add new features that must combine with the legacy of every assumption
you did in the past.
More complex documents, more room for unwanted markup to enter them.

I admire Pandoc's document model: it's simple enough, well specified,
with generic tags (Div for blocks and Span for inlines) that carry
information with classes and key-value data, RawInlines and RawBlocks to 
inject low level tagging for specific formats.
Generics and Raw objects let you represent and convert many elements 
that are not built in.


Massi
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Re: [NTG-context] ConTeXt as a service

[mf]

Il 23/11/19 14:18, Henning Hraban Ramm ha scritto:



Am 2019-11-23 um 13:18 schrieb luigi scarso :
another link:
https://coko.foundation/
https://coko.foundation/product-suite/


or merely https://pubsweet.coko.foundation

Thank you for the hint, sounds interesting and like the thing I always wanted 
to build…
I didn’t read everything, but I didn’t find any hints how (if?) they produce 
PDFs or other output formats.


They use a javascript library, paged.js, it's HTML + standard CSS to PDF.

Massi
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[NTG-context] interlaced overbrace and underbrace

[mf]

Hello list,
is there a better way to interlace overbraces and underbraces like this?

\starttext
These are the expressions to combine:

$$\overbrace{a+b+c}+d \quad a+\underbrace{b+c+d}$$

This is the desired result:

$$\overbrace{a+b+c}+d \kern-16mm\underbrace{\hbox to 15mm{ }}$$

\blank
{\tfx(the underbrace should move down a little more)}
\stoptext

TIA,
Massi
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[NTG-context] place single entry of a register, or filtering the terms of a register

[mf]

Hello list,
is there a way to place only one single entry of a register, or a 
selection of entries?


I looked into strc-reg.mkiv and strc-reg.lua and i would answer "no, 
it's not possible".
I could hack strc-reg.lua and define a command to do that, but maybe a 
better solution is already there.


Here's a very simple MWE to work on, in case it's possible:

\starttext
Cat\index{cat}, mouse\index{mouse}.
\page
Cat\index{cat}, dog\index{dog}.
\page
\placeindex
\page
Here I'd like to place only the "cat" entry:\par
\placeindex[criterium=???]
\stoptext

Massi
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Re: [NTG-context] changing an XML node and reprocess it (or xmlflushing a string)

[mf]

Solved with a dirty hack:

\startbuffer[text]
A paragraph with a fraction made of text with styles:
a fraction made of text/with 
nested styles inside.

\stopbuffer

\startluacode
local gsub = string.gsub
local sfind = string.find
local xmlflush = lxml.flush

local startTextFraction = "$\\frac{\\text{"
local stopTextFraction  = "}}$"

function xml.functions.textfraction( t )
  local dt = t.dt
  inspect( dt )
  local wrapper
  local slashfound = false
  context( startTextFraction )
  local index, child
  for index, child in ipairs( dt ) do
if type( child ) == "string" then
  if not slashfound and sfind( child, "/" ) then
context( gsub( child, "/", "}}{\\text{" ) )
slashfound = true
  else
context( child )
  end
elseif type( child ) == "table" then
  wrapper = {
__parent__ = child.__parent__,
at = {},
dt = child
  }
  child.__parent__ = wrapper
  xmlflush( wrapper )
end
  end
  context( stopTextFraction )
end
\stopluacode

\startxmlsetups xml:textsetups
  \xmlsetsetup{#1}{*}{+}
  \xmlsetsetup{#1}{p|i|b|red}{xml:*}
  \xmlsetsetup{#1}{{span.fraction}}{xml:fraction}
\stopxmlsetups

\xmlregistersetup{xml:textsetups}

\startxmlsetups xml:p
  \xmlflush{#1}\par
\stopxmlsetups

\startxmlsetups xml:i
  {\it \xmlflush{#1}}
\stopxmlsetups

\startxmlsetups xml:red
  {\red \xmlflush{#1}}
\stopxmlsetups

\startxmlsetups xml:b
  {\bf \xmlflush{#1}}
\stopxmlsetups

\startxmlsetups xml:fraction
  \xmlfunction{#1}{textfraction}
\stopxmlsetups

\starttext
  \xmlprocessbuffer{main}{text}{}
\stoptext


Il 07/10/19 18:26, mf ha scritto:

Hello,
i'm using XML and i find useful specifying a fraction made of text this 
way:


text for numerator/text for denominator

With some lua, i can transform it into

\frac{\text{text for numerator}}{\text{text for denominator}}

which typesets something like this:

  text for numerator

text for denominator

Suppose you want to add some styling to the texts, like this:

text for numerator/text for 
denominator


You should split the span node into two elements and the xmlflush them.
This is my M(not)WE:

\startbuffer[text]
A paragraph with a fraction made of text with styles:
a fraction made of text/with 
styles inside.

\stopbuffer

\startluacode
local sub = string.sub
local sfind = string.find
local xmltext = xml.text
local xmlconvert = xml.convert

local function numeratorDenominator( text )
   local before, after = sfind( text, "[^<]/[^>]" )
   local num, den
   if before and after then
     num = sub( text, 1, before )
     den = sub( text, after )
   end
   return num, den
end


function xml.functions.textfraction( t )
   local text = xmltext( t, '' )
   local num, den = numeratorDenominator( text )
   if num and den then
     local fontstyle = tokens.getters.macro( "fontstyle" )
     local xml_num = xmlconvert( num )
     local xml_den = xmlconvert( den )
--    context( "$\\frac{\\text{\\" ..fontstyle .. " " .. num .. 
"}}{\\text{\\" ..fontstyle .. " " .. den .. "}}$" )

     context( "$\\frac{\\text{\\" ..fontstyle .. " " )
     context( num ) -- context.xmlprocessstring( xml_num )
     context( "}}{\\text{\\" ..fontstyle .. " " )
     context( den ) -- context.xmlprocessstring( xml_den )
     context( "}}$" )
   else
     context.xmlflush( t )
   end
end
\stopluacode

\startxmlsetups xml:textsetups
   \xmlsetsetup{#1}{*}{+}
   \xmlsetsetup{#1}{p|i|red}{xml:*}
   \xmlsetsetup{#1}{{span.fraction}}{xml:fraction}
\stopxmlsetups

\xmlregistersetup{xml:textsetups}

\startxmlsetups xml:p
   \xmlflush{#1}\par
\stopxmlsetups

\startxmlsetups xml:i
   {\it \xmlflush{#1}}
\stopxmlsetups

\startxmlsetups xml:red
   {\red \xmlflush{#1}}
\stopxmlsetups

\startxmlsetups xml:fraction
   \xmlfunction{#1}{textfraction}
\stopxmlsetups

\starttext
   \xmlprocessbuffer{main}{text}{}
\stoptext

Massi

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