August 2022 - ntg-context - NTG Mailing Lists

No error when loading a non-existent module
by Max Chernoff 26 Aug '22

26 Aug '22

Hi all, If you load a non-existent module, ConTeXt issues a minor warning, but otherwise proceeds as normal: MWE: \usemodule[doesnt-exist] \starttext Hello world! \stoptext I think that this behaviour should be changed so that a fatal error is issued when a loaded module cannot be found. Plain TeX, LaTeX, and OpTeX all throw an error whenever their versions of modules cannot be found, so ConTeXt is the odd one out here. There are 3 scenarios that I can think of for when you attempt to load a module, but it cannot be found: 1. A module provides some new command "\somecommand" In this case, loading the module will quietly fail, but an undefined control sequence error will be issued whenever you use "\somecommand". This disguises the root problem, which is that the module was never loaded, potentially confusing users. 2. A module changes the layout of a document In this case, the layout of the document would be unchanged by the module. If you're looking at every document, then this would be obvious; however, if you're using some batch processing system, you could unknowingly send out incorrectly-styled documents quite easily. 3. You load a module that provides some command, then never use it This is the only case where the new error would break any documents. However, this case should hopefully be pretty rare since it's pointless to load a module then never use any of its features. Making this change could potentially break some documents that currently work, but I think that this change is worth it, since I'd rather have something break loudly (throwing an error) rather than silently (producing a semi-corrupt document). Thanks, -- Max

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String substitution using regular expressions and backreferences
by Thangalin 26 Aug '22

26 Aug '22

Hi list, I'm looking to perform text replacements. \definereplacement[SubstPostmeridian][ match={[Pp].[Mm].]}, replace={\cap{pm}} ] The \replaceword command doesn't handle periods well. The translate module doesn't seem flexible enough to cover edge cases. Consider the following example document containing both sample inputs and sample outputs: \starttext {\bf Markdown Input} Our grandmother clock rang 11 p.m. and we fled. Our grandmother clock rang 11 p.m., so we fled. Our grandmother clock rang 11 p.m. We fled. \blank[big] {\bf \ConTeXt{} Output} Our grandmother clock rang 11 \cap{pm} and we fled. Our grandmother clock rang 11 \cap{pm}, so we fled. Our grandmother clock rang 11 \cap{pm}. We fled. \stoptext It would be most convenient to write: % Strip periods from p.m. \definereplacement[SubstPostmeridianLowercase][ match={[Pp].[Mm]. ([^:upper:])}, replace={\cap{pm} \1} ] % Preserve terminal period for p.m. (e.e. cummings notwithstanding) \definereplacement[SubstPostmeridianTerminal][ match={[Pp].[Mm]. ([:upper:])}, replace={\cap{pm}. \1} ] % Apply a macron for lowercase 'c' (McAnulty, McGenius, etc.) % Well, not quite a macron: https://tex.stackexchange.com/q/364024/2148 \definereplacement[SubstMac][ match={Mc([:upper:]\w)}, replace={M\macronbelow{c}\1} ] The \1 may be problematic. Other sigils include $1 and #1, which may also have issues. Thank you!

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Fwd: No error when loading a non-existent module
by Hans Hagen 26 Aug '22

26 Aug '22

-------- Forwarded Message -------- Subject: Re: [NTG-context] No error when loading a non-existent module Date: Fri, 26 Aug 2022 09:22:24 +0200 From: Hans Hagen <j.hagen(a)freedom.nl> To: Max Chernoff <mseven(a)telus.net> On 8/26/2022 8:45 AM, Max Chernoff wrote: > On Fri, 2022-08-26 at 07:40 +0200, Hans Hagen wrote: >> On 8/26/2022 3:00 AM, Max Chernoff wrote: >>> Is there a way to make this produce a nice little "error" PDF as soon as >>> the error occurs just like using "\undefined" does? >> >> Only If I add it as option (directive driven, must find some good name >> for it). > > You already have errors and warnings as an option, so a good name might > be "fatal"? i'll put it on the 'to do' >> Most modules add commands and that shows immediately. Modules that kick >> in without some command that needs to enable something are sort of >> not-done or rare and experimental only and comparable to when some >> module patches or overloads core functionality withoutr mentioning it. > > Here I'm mainly thinking about my lua-widow-control module, which > produces a visual effect, although it can be quite subtle if you're not > paying very close attention. but i assuem that one has to explcitly enable that feature via a command as with any such feature so then one would get an undefined command when the module is not loaded > Not seeing anything on the Wiki about either of those. I guess that > means I'm volunteering myself :) guess so, i think it's in some (old) manual > Similarly to "cont-loc.mkxl", is there some local file that is only read > during format generation? Some of my documents use pgf/TikZ and expl3, > and loading these during format generation can save quite a bit of time > when compiling. I know that I can just modify "cont-en.mkxl" or > "context.mkxl", but those can be overwritten by updates. no, these files are always read runtime (when present); personally i only use cont-loc fdor things like this: \enablemode[atpragma] \enablemode[*allfonts] \enabletrackers[pages.timing] % \enabletrackers[system.usage=summary] and there is very little in cont-new while in cont-exp i only have some features or optimizations enabled that i run for a while before they become default we're not going to add features that preloads extra stuff. i don't even want to think about possible interference because who knows what those systems set and do, and there's also order involved; i can even imagine that one then has to bump token memory. also, from the perspective of support it is handy to know that a standardized format is used normally loading files is fast enough once the os has them cached and afaiks tikz is not the fastest subsystem anyway so that probably impacts runtime anyway 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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CLD setupheadertexts
by Willi Egger 25 Aug '22

25 Aug '22

Hello! I have a ConTeXt Lua Document where I need to have headertexts. When running the enclosed file I get 6 pages where only page 1 and 2 have header texts and the others none. — Why is that? Thanks for hints! Kind regards Willi

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C with macron
by Thangalin 25 Aug '22

25 Aug '22

Hi again, Re: https://tex.stackexchange.com/q/364024/2148 How do you typeset a C with a macron below? \starttext M\withmacron{c}Anulty \stoptext Thank you.

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Cron <context@zapf> /var/www/aanhet.net/context/bin/cron/context-mirror
by root＠ntg.nl 25 Aug '22

25 Aug '22

receiving incremental file list ./ ctan.lsr document-2.htm download-1.htm download-2.htm logo-ade.png logo-cts.png logo-pod.png rss.xml show-fil.pdf context/latest/ context/latest/cont-mpd.zip context/latest/cont-ppc.zip context/latest/cont-sci.zip context/latest/cont-tmf.zip context/latest/cont-tst.7z context/latest/cont-tst.tar.xz context/latest/cont-tst.zip sent 100,315 bytes received 18,190,130 bytes 4,064,543.33 bytes/sec total size is 445,900,461 speedup is 24.38 Running archiver: New dir: /var/www/aanhet.net/context//htdocs/archives/context-2022-08-25.20 131981901 /var/www/aanhet.net/context//htdocs/archives/context-2022-08-25.20/latest 126745317 /var/www/aanhet.net/context//htdocs/archives/context-2022-08-25.20/current 18956262 /var/www/aanhet.net/context//htdocs/archives/context-2022-08-25.20/alpha 126707516 /var/www/aanhet.net/context//htdocs/archives/context-2022-08-25.20/beta 404395092 /var/www/aanhet.net/context//htdocs/archives/context-2022-08-25.20 404395092 total

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faltal error: return code: 1
by Pablo Rodriguez 25 Aug '22

25 Aug '22

Hans, using latest from today (and the previous one) with the following source: \starttext \doloopoverlist{\tf,\ss,\tt} {\bgroup\recursestring% \doloopoverlist{\tf,\it,\bf,\bi,\sc} {\bgroup\recursestring\dorecurse{26} {\character{\recurselevel}̱ }\par}\egroup} \stoptext I get the following error: mtx-context | fatal error: return code: 1 But when checking the sources, no error is found: $ mtxrun --script check test-file.tex no error Just in case it helps, creators are "LuaMetaTeX 2.10 20220818 + ConTeXt LMTX 2022.08.25 17:43". I don’t know whether I’m missing something (in that case, the error message should be more verbose). Many thanks for your help, Pablo

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metafun paralleled does not give a parallel path
by fv leung 25 Aug '22

25 Aug '22

The following used to produce three parallel lines. Now it produces one straight line and two arcs. \starttext \startMPcode z0 = origin; z1 = 72dir(45); dotlabel.bot("z0", z0); draw z0--z1; draw (z0--z1) paralleled -15 withcolor red; draw (z0--z1) paralleled 15 withcolor blue; \stopMPcode \stoptext

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Cron <context@zapf> /var/www/aanhet.net/context/bin/cron/context-mirror
by root＠ntg.nl 25 Aug '22

25 Aug '22

receiving incremental file list ./ ctan.lsr document-2.htm download-1.htm download-2.htm logo-ade.png logo-cts.png logo-pod.png rss.xml show-fil.pdf context/latest/ context/latest/cont-mpd.zip context/latest/cont-ppc.zip context/latest/cont-sci.zip context/latest/cont-tmf.zip context/latest/cont-tst.7z context/latest/cont-tst.tar.xz context/latest/cont-tst.zip sent 100,337 bytes received 19,283,678 bytes 3,524,366.36 bytes/sec total size is 445,900,921 speedup is 23.00 Running archiver: New dir: /var/www/aanhet.net/context//htdocs/archives/context-2022-08-25.18 131981913 /var/www/aanhet.net/context//htdocs/archives/context-2022-08-25.18/latest 126745317 /var/www/aanhet.net/context//htdocs/archives/context-2022-08-25.18/current 18956262 /var/www/aanhet.net/context//htdocs/archives/context-2022-08-25.18/alpha 126707516 /var/www/aanhet.net/context//htdocs/archives/context-2022-08-25.18/beta 404395104 /var/www/aanhet.net/context//htdocs/archives/context-2022-08-25.18 404395104 total

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Question to footnote settings
by Tomáš Hála 25 Aug '22

25 Aug '22

Hi all, I am struggling with the width of a footnote number area. I would like to ask how can I set it dynamically based on the width of the largest number on a given page. Without width I get two different footnote texts widths (compare #9+10). With width there is a redundant space on the left (see p. 1). (Number alignment to the right is required.) Thanks in advance for some hints. Tomáš MWE: \setupnotation[footnote][ alternative=left, width=1em, numbercommand={\hfill\high}, ] \starttext \showframe[text][text] \dorecurse{6}{This is a text.\footnote{\dorecurse{12}{Blah blah blah. }} } \page \dorecurse{6}{This is a text.\footnote{\dorecurse{12}{Blah blah blah. }} } \stoptext

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