From: Hans Hagen via ntg-context <ntg-context@ntg.nl>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Cc: Hans Hagen <j.hagen@xs4all.nl>
Subject: Re: parameters TeX->LuaTeX
Date: Sun, 5 Sep 2021 10:51:25 +0200 [thread overview]
Message-ID: <e600e890-c1aa-5975-a189-f54b1e2d2ab7@xs4all.nl> (raw)
In-Reply-To: <99336F15-7FDC-4E78-B5A1-046C8ACE57A6@ziggo.nl>
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
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prev parent reply other threads:[~2021-09-05 8:51 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-05 8:14 Hans van der Meer via ntg-context
2021-09-05 8:39 ` Hans van der Meer via ntg-context
2021-09-05 8:51 ` Hans Hagen via ntg-context [this message]
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