* parameters TeX->LuaTeX
@ 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
0 siblings, 2 replies; 3+ messages in thread
From: Hans van der Meer via ntg-context @ 2021-09-05 8:14 UTC (permalink / raw)
To: NTG ConTeXt; +Cc: Hans van der Meer
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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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* Re: parameters TeX->LuaTeX
2021-09-05 8:14 parameters TeX->LuaTeX 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
1 sibling, 0 replies; 3+ messages in thread
From: Hans van der Meer via ntg-context @ 2021-09-05 8:39 UTC (permalink / raw)
To: NTG ConTeXt; +Cc: Hans van der Meer
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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 <ntg-context@ntg.nl> 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
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> archive : https://bitbucket.org/phg/context-mirror/commits/
> wiki : http://contextgarden.net
> ___________________________________________________________________________________
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^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: parameters TeX->LuaTeX
2021-09-05 8:14 parameters TeX->LuaTeX 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
1 sibling, 0 replies; 3+ messages in thread
From: Hans Hagen via ntg-context @ 2021-09-05 8:51 UTC (permalink / raw)
To: mailing list for ConTeXt users; +Cc: Hans Hagen
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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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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___________________________________________________________________________________
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