September 2024 - ntg-context

How to use Adobe Acrobat Reader (free) as the pdf viewer when compiling file in Windows Terminal (Windows)
by Felix 10 Sep '24

10 Sep '24

I want to use Adobe Acrobat Reader (free) and I always get this message when I have my Windows Terminal, vs code and acrobat setup backend > quitting because file 'Chapter 4 Assignment.pdf' cannot be opened for writing I run into no problems with using sumatra or okular, but Adobe Acrobat free seems to have this problem. Is there a way to fix this? The way I run context on windows is by making the doc in vscode (no extension, just plain vscode), compiling in Windows Terminal and using a pdf viewer to then view stuff.

4 3

What could possibly be wrong with 'P'?
by jbf 09 Sep '24

09 Sep '24

Here is a really odd one that I have a simple workaround for, but for the life of me I cannot work out why this is happening. Is 'p' (or 'P') some sort of restricted letter in certain circumstances? Here is the issue: \startdocument [metadata:author={Author name}, metadata:title={Psalms}] And I get an error. Document will not compile. Any other initial letter than 'p' (in Psalms) does not produce the error. So if I do something like: \startdocument [metadata:author={Janet Dawson}, metadata:title={~Psalms}] Then I no longer get the problem. Which just seems to confirm the fact that it is the initial letter 'p' that is the problem. I can also change the spelling of 'psalms' (anything really, asalms, xsalms) and there is no problem, but of course that would be silly. I have never had this issue before, so while it looks like 'p' is the problem (it can hardly be the Psalms!), it is possibly something else, but what, I would not know. If it helps, I am calling in that metadata:title in the header in the usual way, e.g.: \setupheadertexts [ ] [{\getmarking[chapter]\hskip1em \pagenumber}] [] [ {\pagenumber \hskip1em \documentvariable{metadata:title}}] But that should not be a problem. Below is the error log, but it refers to line 346, which happens to be \stopfrontmatter so does not seem relevant. However, it is my previous experience that sometimes this is telling me that the error is somewhere in the frontmatter, not necessarily on that final line. return { ["errortype"]=0, ["filename"]="./test.tex", ["lastcontext"]="\n<macro> \n Ps\n alms\n<argument> \n {\\pagenumber \\hskip 1em \\documentvariable {metadata:title}\n }\n<macro> \\secondoftwoarguments \n #-#1->#1\n<macro> \\page_layouts_process_element_single \n ...content {\\detokenize {#1}}\\ifcsname \\??layouttextspecial \\m_page_layouts_element_content \\endcsname \\lastnamedcs \\else \\doifelsemarking \\m_page_layouts_element_content {\\getmarking [\\m_page_layouts_element_content ][\\v!first ]}{#1}\n \\fi \n<macro> \\page_layouts_process_element_indeed \n ...andcolor #1#2\\begincsname \\??layouttextstrut \\layoutelementparameter \\c!strut \\endcsname \\ignorecrlf \\edef \\p_width {\\layoutelementparameter #3}\\ifempty \\p_width \\else \\expandafter \\page_layouts_process_element_limited \\fi \\p_text \n \\endgroup \n<macro> \\currentlayoutelement \n ...h \\bgroup \\page_layouts_place_extra_text_left \\hss \\egroup \\kern -\\makeupwidth \\fi \\else \\hbox to \\makeupwidth \\bgroup \\page_layouts_place_extra_text_left \\page_layouts_process_element_indeed \\c!leftstyle \\c!leftcolor \\c!leftwidth \n \\hss \\egroup ...\n ...\n\n<line 3.346> \n \\stopfrontmatter\n\n", ["lastluaerror"]="", ["lasttexerror"]="Valid keyword expected, likely 'plus'", ["lasttexhelp"]="You started a keyword but it seems to be an invalid one. The first character(s)\nmight give you a clue. You might want to quit unwanted lookahead with \\relax.", ["linenumber"]=346, ["offset"]=10, ["skiplinenumber"]=346, Version no. is 20220825 LMTX but that should not be a problem either. I have used it consistently for other titles. Julian

2 2

Is \not still supported?
by Wolfgang Schuster 08 Sep '24

08 Sep '24

Hi, is the \not command still supported in math mode or should users replace it with the combined form, e.g. \notin instead of \not\in. %%%% begin example \starttext \im{x \in M} \im{x \notin M} \im{x \not\in M} \stoptext %%%% end example Wolfgang

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Steps to become a ConTeXt developer
by Shiv Shankar Dayal 08 Sep '24

08 Sep '24

Hi, I am not sure if this is the best place to ask this question but here it goes. Suppose a C programmer wants to become a core ConTeXt developer then what steps one should follow. Assume that the programmer knows only the basics of LaTeX and never wrote macros etc using TeX or ConTeXt. -- Respect, Shiv Shankar Dayal

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\ldot and \ldotp not working
by Aditya Mahajan 05 Sep '24

05 Sep '24

Hi, With context 2024.08.16 the following gives an error: \starttext $A \ldot B$ \stoptext tex error > tex error on line 2 in file ./test.tex: Control sequence expected instead of undefined <line 3.2> $A \ldot B$ Same error with `\ldotp`. However \starttext \show\ldot \show\ldotp \stoptext gives > \ldot=permanent \Umathchar"02"00"00002E > \ldotp=permanent \Umathchar"06"00"00002E which appears correct. So, not sure what is going on. Any ideas? Thanks, Aditya

4 5

leave
by Bitvic-ntg 04 Sep '24

04 Sep '24

1 0

Combining styles (especially bold and italic)
by Gerion Entrup 04 Sep '24

04 Sep '24

Hi, I have the situation that I want to typeset a special formatted name within a section heading. The name contains an italic part while the heading is bold, but both styles are defined at another place. Is there a way to tell ConTeXt to combine them, so that it is bold _and_ italic? Here is a minimal example: ``` \define\somename{HX\style[italic]{print}\autoinsertnextspace} \setuphead[section, subject][style={\bfc}] \starttext \startsection[title=The \somename name] \somename is a strange written name. \stopsection \stoptext ``` In the normal text, HXprint is written correctly, in the section heading "print" is italic but not bold. Best Gerion

4 6

Is there an alternative to \reference[]{} that won't interfere with the document design?
by Joel 03 Sep '24

03 Sep '24

I had to place \reference[]{} in various places in my document as I need to refer to page numbers of a lot of various items in the document. There are hundreds of these. When placing them, I hadn't realized it would impact the document design--I assumed such a command would be invisible. Though I've tried placing as many inside the section titles, where they become invisible, I've found just placing \reference[]{} anywhere on a page will create extra blank spaces, leading my document to expand from 440 lines to 448. It added up quite quickly to 8 whole pages. No matter how much I use % or try to hide it within the page, it still produces weird results. It isn't invisible, its doing things to the document, moving text around, leaving gaps. In addition, it makes the document look haphazard, creating random formatting "glitches". I'm assuming because \reference has a curly bracket {} that its causing something to be rendered, even it its not really something visible always, it often makes a carriage return on the page if placed say after a table, or before a section title. Sadly, the way the document was designed I don't have a way to integrate them inside the section titles everywhere, there are too many and some need to mark a specific page within a section. I haven't placed anything inside the {} and only use the square brackets to mark the reference name. Is there an alternative command that won't occupy space like this? --Joel

4 4

Inserting text between end notes
by Rik Kabel 03 Sep '24

03 Sep '24

Hello all, I am trying to implement some style-guide-defined (Chicago 17, and now, 18) requirements to the end notes in a book. The need is to insert non-end-note text into the list of end notes. But end notes are not a list (as far as I can see) and \writetolist and such are no help. The text to be inserted is of two types. The first is the name of the chapter from which the following notes were generated. It would be nice to automatically generate these. The second type is pseudo-end-notes crediting the book and chapter epigraphs, which should appear as unnumbered end notes (at the start of the note section and the start of each chapter's notes). Ideally these would be generated in the same way as regular end notes but will not increment the note numbers (and should not, at least in my use case, require cross-referencing or bookmarking). I can hack the first requirement with: \define[1]\EndNoteChapter{\testpage[3] \blank \midaligned{\tfa{Chapter #1}} \blank} in the environment and \EndNoteChapter{6 How I Saved the World} at the end of the last end note in the preceding chapter, but this is obviously prone to mistakes. I would rather integrate the handling into the chapter heading environment. I suppose that this hack might be extended to handle the epigraph notes as well, but it is just a hack. Has anyone successfully dealt with this before? If not, is there the possibility of adding similar functionality to \writetolist and such for end note structures? -- Rik

2 2

Placement of floats with an "anchor"
by Gerion Entrup 03 Sep '24

03 Sep '24

Hi, in my document, I recently left a TODO note that said: "This floating graphic needs to be on the same page than this formula at the end." My floating graphic currently uses: \startplacefigure[title={bla}, location=top, reference=fig:bla] ... \stopplacefigure The graphic should be at the top of the page where the formulas are typeset at the end. Normally, I would do that manually, when all other text is finished. Can I somehow automate this in ConTeXt? So defining a (non visible) "anchor" at a random place within the normal text and then tell ConTeXt to place the float at the same page (if possible)? Here is a minimal example to play around (the float is placed on page 1, while the "anchor" is on page 2). ``` \starttext \input{knuth} \input{knuth} \input{knuth} % anchorto is made up to demonstrate the problem \startplacefigure[title={A figure explaining the formula.}, location=top, reference=some, anchorto={eq:important}] \startalign[center] \style[sans]{This is a figure that explains the formula.} \stopalign \stopplacefigure It is explained with these equations (see also figure \in[some]): \startformula[reference=eq:important] \startalign \NC a \NC = b \NR \NC a \NC = b \NR \NC a \NC = b \NR \NC a \NC = b \NR \NC a \NC = b \NR \NC a \NC = b \NR \NC a \NC = b \NR \NC a \NC = b \NR \NC a \NC = b \NR \stopalign \stopformula \input{knuth} \input{knuth} \input{ward} \stoptext ``` Best Gerion

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