Thanks Otared! Works like a charm! Out of curiosity, could you explain the mechanics behind this? I know it is a commonly used trick in TeX macro definitions, but I don’t know how it changes TeX’s understanding of the tokes it parses. Cheers, Tim Op vr 9 feb. 2018 om 20:50 schreef Otared Kavian :

Hi Tim,

Welcome back to ConTeXt! When one defines a command, in particular when using the brackets […], it is wise to put a percent sign at the end of the line if one changes the line on which the macro is defined. In your case, saying

\definemacro\see[#1:#2]% {\dosee{#1}{#2}}

suppresses the problem you are reporting (at least here on my machine running MacOS 10.13.3 and the latest beta as yours).

Best regards: OK

On 9 Feb 2018, at 19:03, Tim Steenvoorden wrote:

Dear all,

After some time I’m back to ConTeXt and I dug up some old macros. I used to define a \see macro to automatically insert labels like “chapter”, "figure" etc. in front of a reference based on the structure of the label. Below you'll find its definition.

It worked in MKIV about two years ago, nevertheless, now ConTeXt hangs when placing punctuation after the command. I.e. TeX hangs with an emergency stop (“*" on the terminal) after all files have been processed (after cont-yes.mkiv is closed).

What am I doing wrong that such a thing happens?

I’m on macOS 10.13.3 with minimals beta 2018.02.09 00:04.

Cheers, Tim

––––––

\starttext

\definemacro\see[#1:#2] {\dosee{#1}{#2}}

\starttexdefinition dosee #1#2 \doifdefinedelse{in#1} {\getvalue{in#1}[#1:#2]} {\writestatus{references}{reference format in#1 not defined} \in[#1:#2]} \stoptexdefinition % #3 is optional and gobbled by \in

\definereferenceformat[inchp] [text=\word{\labeltext{chapter}}]

\setuplabeltext[en] [chapter=Chapter~]

\chapter[chp:first]{First}

Works: \see[chp:first]

Hangs: \see[chp:first],

\stoptext

–––––– -- ---- T.J. Steenvoorden, MSc

PhD Candidate | Radboud University Nijmegen Faculty of Science | Department of Software Science Mercator 1 Building | Room 01.08 Toernooiveld 212 | 6525 EC | Nijmegen | The Netherlands +31 24 365 22 91 | t.steenvoorden@cs.ru.nl

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Thanks Wolfgang, that’s a clear and easy explanation! Cheers, Tim Op za 10 feb. 2018 om 13:46 schreef Wolfgang Schuster < schuster.wolfgang@gmail.com>

Tim Steenvoorden 10. Februar 2018 um 12:44

Thanks Otared! Works like a charm!

Out of curiosity, could you explain the mechanics behind this? I know it is a commonly used trick in TeX macro definitions, but I don’t know how it changes TeX’s understanding of the tokes it parses.

When you create a new commands like this

\def\mycommand[#1]{...}

the brackets are delimiters for the argument of the command, i.e. when TeX sees \mycommand it looks for [ and grabs everything intill ] as as argument. When you out now a space (or start a new line) after ] in your definition of the command, e.g.

\def\mycommand[#1] {...}

TeX looks now for “] ” (right bracket followed by a space) as delimiter for the argument of your command.

Wolfgang

___________________________________________________________________________________ If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context webpage : http://www.pragma-ade.nl / http://context.aanhet.net archive : https://bitbucket.org/phg/context-mirror/commits/ wiki : http://contextgarden.net

___________________________________________________________________________________

-- ---- T.J. Steenvoorden, MSc PhD Candidate | Radboud University Nijmegen Faculty of Science | Department of Software Science Mercator 1 Building | Room 01.08 Toernooiveld 212 | 6525 EC | Nijmegen | The Netherlands +31 24 365 22 91 | t.steenvoorden@cs.ru.nl