Re: [NTG-context] parameters TeX->LuaTeX
On 9/5/2021 10:14 AM, Hans van der Meer via ntg-context wrote:
There is something I do not understand in the passing of parameters from
TeX to LuaTex.
This is my TeX definition:
\def\ListSort[#1]#2{\directlua{hvdm.listsort([===[#2]===],[===[#1]===])}}
tex haalt de {} rond #2 weg
Calling \ListSort[sep={ + }]{} delivers the string 'sep={ + }' into
LuaTeX as the printout in the logfile shows and as intended.
However in \ListSort[{ + }]{} the braces have disappeared and
transferred is nothing more than '+ '.
Why is the transfer messing up the character string I am passing by
removing the outer braces? Is this a bug or is it an unavoidable
consequence of the TeX-LuaTeX interface?
\starttext
\def\foo#1{\detokenize{#1}} \foo{hvdm has to read the tex book}
\def\foo#+{\detokenize{#1}} \foo{hvdm has to read the luametatex
manual}
\stoptext
-
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-
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Re: [NTG-context] parameters TeX->LuaTeX
And \ListSort[[abc]]{value} turns out to be worse: doesn't makes it into LuaTeX
at all.
dr. Hans van der Meer
> On 5 Sep 2021, at 10:14, Hans van der Meer via ntg-context
> wrote:
>
> There is something I do not understand in the passing of parameters from TeX
> to LuaTex.
> This is my TeX definition:
> \def\ListSort[#1]#2{\directlua{hvdm.listsort([===[#2]===],[===[#1]===])}}
>
> Calling \ListSort[sep={ + }]{} delivers the string 'sep={ + }' into LuaTeX
> as the printout in the logfile shows and as intended.
> However in \ListSort[{ + }]{} the braces have disappeared and transferred is
> nothing more than ' + '.
>
> Why is the transfer messing up the character string I am passing by removing
> the outer braces? Is this a bug or is it an unavoidable consequence of the
> TeX-LuaTeX interface?
>
> dr. Hans van der Meer
>
>
> ___
> 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
> ___
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[NTG-context] parameters TeX->LuaTeX
There is something I do not understand in the passing of parameters from TeX to
LuaTex.
This is my TeX definition:
\def\ListSort[#1]#2{\directlua{hvdm.listsort([===[#2]===],[===[#1]===])}}
Calling \ListSort[sep={ + }]{} delivers the string 'sep={ + }' into LuaTeX as
the printout in the logfile shows and as intended.
However in \ListSort[{ + }]{} the braces have disappeared and transferred is
nothing more than ' + '.
Why is the transfer messing up the character string I am passing by removing
the outer braces? Is this a bug or is it an unavoidable consequence of the
TeX-LuaTeX interface?
dr. Hans van der Meer
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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
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