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noindent vs noindentation in strc-con
by Aditya Mahajan 12 Jul '19

12 Jul '19

Hi, Why do all the rendering setups in strc-con.mkvi use \noindent? Can the \noindet be replaced by \noindentation? \noindent has some side effects. For example, consider this recent question on TeX.SE: https://tex.stackexchange.com/questions/499464/context-empty-line-in-enumer… which basically boils down to the difference between: \showboxes \starttext \noindent \inmargin{Example 1} \startitemize \item This is how enumeration works. \stopitemize \inmargin{Example 2} \startitemize \item This works correctly \stopitemize \stoptext Note that the first example has an extra space before the itemize. In principle, replacing \noindent by \noindentation fixes the extra line break, but it does not work with enumerations because it uses \inmargin[scope=local]: \showboxes \starttext \noindentation \inmargin[scope=local]{Example 1} \startitemize \item This is how enumeration works. \stopitemize \inmargin[scope=local]{Example 2} \startitemize \item This works correctly \stopitemize \stoptext where the box containing "noindentation" is misgligned. So, two questions: * Why is \noindent used instead of \noidentation? * Is there a bug with scope=local? Aditya

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reference containing parentheses causes trouble
by Sanjoy Mahajan 12 Jul '19

12 Jul '19

Dear List, Warning: The following may be a bug or feature or just my misunderstanding! It seems that parentheses cause trouble in references. MNWE: \starttext \section[sec:one(two)]{One} As you see in sec.~\in[sec:one(two)], \stoptext The "in sec.~\in[sec:one(two)]" typesets as "in sec. ??" and the log shows: references > start missing references references > 1 [][sec:one(two)] references > stop missing references (It all works fine upon deleting "(two)" throughout.) Is this behavior known and expected? If it is, I'll add a note to the "References" page on the wiki. -Sanjoy

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registers: subentry indentation different from word--number gap?
by Sanjoy Mahajan 12 Jul '19

12 Jul '19

I don't think the current behavior is a bug, so the following is a feature request: With the following fairly minimal example \setupregister[index][indicator=no, distance=0.5em] \starttext ABC\index{x}DEF\index{x+yyz} \blank \placeindex \stoptext the distance parameter sets (1) the hanging indentation of the 'yyz' subentry and also (2) the distance between an entry and its pagenumber. (That's what a look at strc-reg.mkiv shows too.) It's a matter of taste, but my eye thinks that 0.5em is right for no. 2, but too small for no. 1 -- whereas the default (1em) is just right for no. 1 but too large for no. 2. Thus, could the two dimensions be decoupled and bcome settable indepently? Perhaps keep 'distance' for the entry--pagenumber distance (no. 2), which is its meaning on the wiki, and invent 'subdistance' for the hanging indent (no. 1)? I've just realized a cheap hack to do the same, so maybe it's not worth messing with backward compatability by adding a new parameter. The hack: \def\blah#1{#1\hskip-0.5em} \setupregister[index][indicator=no, distance=1em, textcommand=\blah] -- -Sanjoy <http://savelongwharfpark.org/> Save Long Wharf Park in Boston Harbor! <http://streetfightingmath.com/> Six reasoning tools to make hard problems easy.

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Typesetting Markdown – Part 6: Computation
by Thangalin 11 Jul '19

11 Jul '19

This part of the series describes a way to produce and typeset dynamic documents using R Markdown and ConTeXt. https://dave.autonoma.ca/blog/2019/07/11/typesetting-markdown-part-6/ Comments or suggestions for improvement?

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Strange error updatng LMTX
by Andres Conrado 11 Jul '19

11 Jul '19

When updating my LMTX installation today, I got this: tex error > tex error on line 179 in file /home/conrado/Apps/lmtx/tex/texmf-context/tex/context/base/mkiv/strc-flt.mkvi: ! Undefined control sequence <argument> \c!compressdistance =\emwidth \mult_interfaces_get_parameters_item ...2->\if ,#1 ,\expandafter \mult_interf... \mult_interfaces_get_parameters_indeed ...tem #1,] , \setup_float ...es_get_parameters {\??float :}[#1] \the \everysetupfloat \fi ... <to be read again> \syst_helpers_double_empty_two_nop \par l.179 169 \c!bottomoffset=\zeropoint, 170 \c!freeregion=\v!yes, 171 %\c!local=, 172 %\c!bottombefore=, % e.g. \vfill 173 %\c!bottomafter=, 174 %\c!default=, % default location 175 \c!sidethreshold=.5\strutdp, % set to "old" to check with old method 176 \c!numbering=\v!yes, 177 \c!compress=\v!yes, % when possible pack floats when flushing 178 \c!compressdistance=\emwidth] 179 >> 180 \setupfloatframed 181 [\c!frame=\v!off, 182 \c!offset=\v!overlay, 183 \c!strut=\v!no] 184 185 \appendtoks 186 \doifelse{\floatparameter\c!compress}\v!yes\settrue\setfalse\c_page_floats_pack_flushed 187 \d_page_floats_compress_distance\floatparameter\c!compressdistance\relax 188 \to \everysetupfloat 189 The control sequence at the end of the top line of your error message was never \def'ed. If you have misspelled it (e.g., '\hobx'), type 'I' and the correct spelling (e.g., 'I\hbox'). Otherwise just continue, and I'll forget about whatever was undefined. Seems to affect the floats mechanism. Andrés Conrado Montoya http://chiquitico.org

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Split extreme tables across tables
by Thangalin 11 Jul '19

11 Jul '19

The following document does not split across tables, which is a little surprising: \starttext \startplacetable[title={Average Annual Temperatures}] \startxtable \startxtablehead[head] \startxrow \startxcell[align=middle,width={0.10\textwidth}] Year \stopxcell \startxcell[align=middle,width={0.14\textwidth}] Value \stopxcell \stopxrow \stopxtablehead \startxtablebody[body] \dorecurse{100}{% \startxrow \startxcell[align=middle,width={0.10\textwidth}] 1880 \stopxcell \startxcell[align=middle,width={0.14\textwidth}] 0.1146 \stopxcell \stopxrow} \stopxtablebody \startxtablefoot[foot] \startxrow \startxcell[align=middle,width={0.10\textwidth}] 2018 \stopxcell \startxcell[align=middle,width={0.14\textwidth}] 1.014 \stopxcell \stopxrow \stopxtablefoot \stopxtable \stopplacetable \stoptext I'd have thought the default behaviour would be to split because the alternative is for the table content to scroll into the footer and off the page. A fix is to use: \startplacetable[title={Average Annual Temperatures}, location={split}] However, when the document is generated using pandoc, injecting location={split} is not feasible. It would be convenient if there was a way to use setups to override the location option for \startplacetable. Henri Menke provided a work around: let\oldstartplacetable\startplacetable \unexpanded\def\startplacetable{\dosingleempty\newstartplacetable} \def\newstartplacetable[#1]{\oldstartplacetable[#1,location={split}]} See: https://tex.stackexchange.com/a/499453/2148 This does the job, but it doesn't feel like the ConTeXt way. How would you use setups to enable page splitting on extreme tables? Thank you!

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an object representation of the node list of a paragraph: a lua table or a JSON
by mf 10 Jul '19

10 Jul '19

Hello list, i'd like having an object representation of a typeset paragraph or even a page, preferably as a JSON object, but a Lua table is equally good. My reference is section "4.4 Node lists" of the CLD manual. Before writing an iterator over the list of nodes of a paragraph, figuring out all the possible nodes and their fields, i'm wondering if there's some hidden tool in the ConTeXt coffer to simplify the task. Best wishes, Massimiliano

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Fwd: [garden] debug getinfo error
by Taco Hoekwater 10 Jul '19

10 Jul '19

> Begin forwarded message: > > From: Husum42(a)t-online.de > Subject: [garden] debug getinfo error > Date: 10 July 2019 at 11:52:55 CEST > To: gardeners(a)contextgarden.net > > > There is a lua error after "debug.getinfo()". Why? > > Thanks for help > G.Lauber > > ------------------------- > mtx-context | run 1: luatex --fmt="/opt/context/beta-2018.09.01/tex/texmf-cache/luatex-cache/context/5fe67e0bfe781ce0dde776fb1556f32e/formats/luatex/cont-en" --jobname="texweb" --lua="/opt/context/beta-2018.09.01/tex/texmf-cache/luatex-cache/context/5fe67e0bfe781ce0dde776fb1556f32e/formats/luatex/cont-en.lui" --c:currentrun=1 --c:fulljobname="./texweb.tex" --c:input="./texweb.tex" --c:kindofrun=1 --c:maxnofruns=9 --c:texmfbinpath="/opt/context/beta-2018.09.01/tex/texmf-linux-64/bin" "cont-yes.mkiv" > > This is LuaTeX, Version 1.10.1 (TeX Live 2019) > system commands enabled. > open source > level 1, order 1, name '/opt/context/beta-2018.09.01/tex/texmf-context/tex/context/base/mkiv/cont-yes.mkiv' > system > > system > ConTeXt ver: 2019.07.04 12:29 MKIV beta fmt: 2019.7.10 int: english/english > system > > system > 'cont-new.mkiv' loaded > open source > level 2, order 2, name '/opt/context/beta-2018.09.01/tex/texmf-context/tex/context/base/mkiv/cont-new.mkiv' > system > beware: some patches loaded from cont-new.mkiv > close source > level 2, order 2, name '/opt/context/beta-2018.09.01/tex/texmf-context/tex/context/base/mkiv/cont-new.mkiv' > system > files > jobname 'texweb', input './texweb', result 'texweb' > fonts > latin modern fonts are not preloaded > languages > language 'en' is active > open source > level 2, order 3, name '/tmp/uhd8RE/texweb.tex' > fonts > preloading latin modern fonts (second stage) > fonts > 'fallback modern-designsize rm 12pt' is loaded > > lua error > lua error on line 6 in file /tmp/uhd8RE/texweb.tex: > > [ctxlua]:1: attempt to call a nil value (field 'getinfo') > > 1 % generated by live script > 2 \setupexternalfigures[location={local,global,default}] > 3 \starttext > 4 \startlua > 5 debug.getinfo(2) > 6 >> \stoplua > 7 \stoptext > 8 > > mtx-context | fatal error: return code: 256 > > Taco Hoekwater Elvenkind BV

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index page ranges where start page == end page
by Sanjoy Mahajan 10 Jul '19

10 Jul '19

The following probably well known minimal example \starttext \startregister[index][key1]{an entry}\input knuth\stopregister[index][key1] \placeindex \stoptext produces the index entry "an entry 1--1", where the page range should be just a single page. A question (and then two workarounds): Could ConTeXt automatically change such page ranges to the single page ("an entry 1")? Meanwhile, a couple of workarounds: In the MkII (pre-lua) days, I wrote a shell/sed/awk/perl script that converted the .pdf file to text, grepped for (strings that are likely to be) page ranges, and spat out lines where the page range should be a page. (Those days were so long ago that I've forgotten the script's language.) Then I would manually find and change the corresponding \startregister[index] in the source to a plain \index (and delete the corresponding \stopregister). In these MkIV days, with the index data in a lua table, I've been playing with the following python2 script that parse the .tuc file to spit out the same information slightly more reliably. In the next step, coming soon, the script will check that each \seeindex entry points to an actual entry and also that each \seeindex{also ...} entry originates from an actual entry (otherwise it shouldn't be "also"). The script requires the slpp package; pip install git+https://github.com/SirAnthony/slpp The parser in the script has a bug in that it doesn't handle minus signs in the lua table, maybe everywhere or maybe only some of them, so the script replaces them with "_" before sending the data to the parser (a terrible hack). To run the script: python check-index.py < file.tuc Here is check-index.py: # parse lua-format index-entry table extracted from book.tuc to check # that each xref points to an actual entry, and that, further, "see # also" src entries have at least one page ref (perhaps in subtree) # due to bug in slpp parser: replace "-" (minus signs) in data with "_" from slpp import slpp as lua from sys import stdin,stderr import re def tuclist2entry(l): return '+'.join(l) data = [] intro_re = r'utilitydata.structures.registers.collected\s*=' in_register_data = False for l in stdin: if re.match(intro_re, l): in_register_data = True data.append(re.sub(intro_re,'',l)) elif in_register_data: data.append(l) if re.match(r'}$', l): in_register_data = False data = re.sub("-", "_", ''.join(data)) dict = lua.decode(data) index = dict['index'] entries = [] xrefs = [] for entry in index['entries']: src = [x[0] for x in entry['list']] refs = entry['references'] if 'seeword' in entry: dest = entry['seeword']['text'] xrefs.append((src,dest)) else: page = refs['realpage'] if refs.get('lastrealpage',None) == page: print "silly range:", tuclist2entry(src) entries.append(src) for xref in xrefs: print tuclist2entry(xref[0]),'->', xref[1]

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Is it possible to define a float environment that uses 2 captions? (and another question)
by Andres Conrado Montoya 09 Jul '19

09 Jul '19

I'm working on a book that uses tables and figures, but the editors want to use to diffferent captions for each figure: one as usual, with the float description and number, and another one with a "Source" for said float. Something like: --------------------------------- | | | Float | | | --------------------------------- Figure 1: The float description. Source: The float source. I know i can do it by hand, inserting line breaks in the caption and so on. But I was wondering if there is a programmatic way to do it, so I can, for example, change the "Caption" position to be above the float, but have the "Source" below it. LIke: Figure 1: The float description. --------------------------------- | | | Float | | | --------------------------------- Source: The float source. I've been reviewing the Wiki, but so far I have no idea how to approach it. Any recommendation will be very appreciated. Thank you for your time. Andrés Conrado Montoya Andi Kú andresconrado(a)gmail.com http://sesentaycuatro.com http://messier87.com http://chiquitico.org ---------------------------------------- Los fines no justifican los medios, porque la medida verdadera de nuestro carácter está dada por los medios que estamos dispuestos a utilizar, no por los fines que proclamamos. ---------------------------------------- “You develop an instant global consciousness, a people orientation, an intense dissatisfaction with the state of the world, and a compulsion to do something about it. From out there on the moon, international politics look so petty. You want to grab a politician by the scruff of the neck and drag him a quarter of a million miles out and say, ‘Look at that, you son of a bitch.’” — Apollo 14 astronaut Edgar Mitchell

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