On Tue, 15 Sep 2020, Wolfgang Schuster wrote:

Aditya Mahajan schrieb am 15.09.2020 um 05:30:

...

The following MWE gives an error with LMTX 2020.09.05

\usemodule[vim] \definevimtyping[MATLABCODE][syntax=matlab]

\starttext \startMATLABCODE saveas(gcf(), "output/same-sigma.png") \stopMATLABCODE \stoptext

The error message is:

callback error: ...metatex/texmf-context/tex/context/base/mkiv/lang-ini.lua:509: bad argument #1 to 'prehyphenchar' (luatex.lang expected, got no value) stack traceback: [C]: in function 'lang.prehyphenchar' ...metatex/texmf-context/tex/context/base/mkiv/lang-ini.lua:509: in field 'prehyphenchar' ...metatex/texmf-context/tex/context/base/mkiv/typo-brk.lua:171: in local 'method' ...metatex/texmf-context/tex/context/base/mkiv/typo-brk.lua:392: in upvalue 'typesetters_breakpoints_handler' [string "local tonut = nodes.tonut..."]:16: in function <[string "local tonut = nodes.tonut..."]:11> (...tail calls...) ...metatex/texmf-context/tex/context/base/mkiv/node-pro.lua:88: in function <...metatex/texmf-context/tex/context/base/mkiv/node-pro.lua:79>

1 >> \SYNBOL{}saveas(gcf(), \SYN[String]{"output/same-sigma.png"})\SYNEOL{} 2 mtx-context | fatal error: return code: 256

Any idea what is going on?

You have to add \resetbreakpoints to the vim/filter module.

Thanks. I had: \doifnotinset{\v!hyphenated}{\externalfilterparameter\c!option} {\language\minusone}% which I changed to \doifnotinset{\v!hyphenated}{\externalfilterparameter\c!option} {\language\minusone \resetbreakpoints}% and this fixed the error. Thanks, Aditya

On Tue, 15 Sep 2020, Wolfgang Schuster wrote:

Aditya Mahajan schrieb am 15.09.2020 um 21:19:

...

On Tue, 15 Sep 2020, Wolfgang Schuster wrote:

...

You have to add \resetbreakpoints to the vim/filter module.

Thanks. I had:

\doifnotinset{\v!hyphenated}{\externalfilterparameter\c!option} {\language\minusone}%

which I changed to

\doifnotinset{\v!hyphenated}{\externalfilterparameter\c!option} {\language\minusone \resetbreakpoints}%

and this fixed the error.

Don't use the \language hack, the official and supported commands are \nohypens and \dohyphens or when you need a interface for it use

\usehyphensparameter\...parameter

which allows

\setup...[hyphens=yes|no]

This is a leftover from the old days. Thank for the suggestion on how to fix this. I'll play around a bit and perhaps add the option `hyphens=yes|no` instead of the current `option=hyphenated`. Aditya