From: Jaroslav Hajtmar <hajtmar@gyza.cz>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: OT: Problem with writing macros into variables in LuaTeX
Date: Sun, 18 Mar 2012 14:15:18 +0100 [thread overview]
Message-ID: <4F65DFE6.50002@gyza.cz> (raw)
In-Reply-To: <821C6165-2D05-4848-A66C-B00B1862F422@googlemail.com>
Thanks Wolfgang,
these are very valuable tips for me for the future. I put them to
special document for later use. Thanks again for the valuable advice.
Jaroslav Hajtmar
Dne 18.3.2012 14:00, Wolfgang Schuster napsal(a):
> Am 18.03.2012 um 13:48 schrieb Jaroslav Hajtmar:
>
>
>> > Thanx Wolfgang.
>> >
>> > Thanks for the tip. I do too, but I did not know how to get into Lua code that the macro.
>>
> The one thing you have to know, when you pass a macro from TeX to Lua it is expanded.
>
> \def\foo{FOO}
>
> \directlua{myfuntion("\foo")}
>
> In this example the Lua function gets “FOO” as input and not “\foo” because the argument of \directlua is expanded, to prevent you need a function which prevents expansion.
>
> \directlua{myfunction("\string\foo")}
>
> Works only for the command after \string.
>
> \directlua{myfunction("\detokenize{\foo}")
>
> Converts \foo into tokens and Lua sees now \foo.
>
> \directlua{myfunction("\unexpanded{\foo}")
>
> Prevents the argument to be expanded and Lua gets \foo (there are differences compared with \detokenize but I forgot them)
>
> Wolfgang
>
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prev parent reply other threads:[~2012-03-18 13:15 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-03-18 10:25 Jaroslav Hajtmar
2012-03-18 10:38 ` Hans Hagen
2012-03-18 10:53 ` Wolfgang Schuster
[not found] ` <4F65C7F4.1090604@gyza.cz>
2012-03-18 12:40 ` Jaroslav Hajtmar
2012-03-18 13:14 ` luigi scarso
2012-03-18 13:17 ` Jaroslav Hajtmar
[not found] ` <06EE6FAB-E51B-4996-9655-450CF0B05839@googlemail.com>
[not found] ` <4F65D98F.8020504@gyza.cz>
[not found] ` <821C6165-2D05-4848-A66C-B00B1862F422@googlemail.com>
2012-03-18 13:15 ` Jaroslav Hajtmar [this message]
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