On Sat, 14 Apr 2018, Lutz Haseloff wrote:

 Hi all,

 with latest context my filter test file fails with an error. My file:

 \usemodule[filter]
 \defineexternalfilter
        [luatexdevelopmentlevel]
        [filtercommand={luatex --credits | grep Development > \externalfilteroutputfile}]
 \starttext
 \inlineluatexdevelopmentlevel{}
 \stoptext

There should be a more direct way of getting this information!

 Error message:

 loading         > Module Catcodes (ver: 2011.12.17)

 tex error       > tex error on line 96 in file /usr/local/context/tex/texmf-modules/tex/context/third/filter/t-module-catcodes.tex: ! Undefined control sequence

 l.96 ...tivecatcode  \gdef\activeendoflinetoken{^^M}

 86     \stopcatcodetable
 87
 88
 89
 90     \ifdefined \activeendoflinetoken \else
 91         % from catc-ini.mkiv
 92         \bgroup
 93             \catcode \tabasciicode       \activecatcode  \gdef\activetabtoken      {^^I}
 94                                                          \gdef\outputnewlinechar   {^^J}
 95             \catcode \formfeedasciicode  \activecatcode  \gdef\activeformfeedtoken {^^L}
 96 >>          \catcode \endoflineasciicode \activecatcode  \gdef\activeendoflinetoken{^^M}
 97         \egroup
 98     \fi
 99
 100     \protectmodulecatcodes
 101     \stopmodule
 102

I am not on a machine with latest context (and cannot update right now). 
The code above was taken from catc-ini.mkiv, but that file changed in the 
latest update. Could you please run the following test and see if it 
works:

1. Copy t-module-catcodes.tex to your local directory.
2. Change \gdef\activetabtoken{^^M} with

    \xdef\activetabtoken      {\Uchar\tabasciicode      }

and similar for other \gdef's according to lines 121-124 of 
https://github.com/contextgarden/context-mirror/blob/25fcad7435f56cdce2658336909f4da6a65589c0/tex/context/base/mkiv/catc-ini.mkiv

and run your test again.

Thank you for the report.

Aditya

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