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 <tim.steenvoorden@gmail.com> 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 <mailto:t.steenvoorden@cs.ru.nl>___________________________________________________________________________________
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