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From: Hans Hagen <j.hagen@xs4all.nl>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>,
	Aditya Mahajan <adityam@umich.edu>
Subject: Re: Typing within doifmode leads to error
Date: Sun, 21 Mar 2021 02:43:42 +0100	[thread overview]
Message-ID: <388305dc-1e93-e380-2274-35ed896af2c0@xs4all.nl> (raw)
In-Reply-To: <nycvar.YAK.7.78.908.2103201658450.819312@nqv-guvaxcnq>

On 3/20/2021 10:03 PM, Aditya Mahajan wrote:
> On Sat, 20 Mar 2021, Hans Hagen wrote:
> 
>>>
>>> I wonder if we could have an environment, say \startluatemplate ...
>>> \stopluatemplate, which is evaluated on the fly rather than when loading a
>>> file.
>>
>> define 'evaluated on the fly'
> 
> Consider the following example:
> 
> \enablemode[A]
> \starttext
> \startluatemplate
>    <?lua if tex.modes["A"] and not tex.modes["B"] then ?>
>    \starttyping
>    A and not B
>    \stoptyping
>    <?lua else ?>
>    \starttyping
>    not (A and not B)
>    \stoptyping
>    <?lua end ?>
> \stopluatemplate
> \stoptext
> 
> What I am thinking is that \startluatemplate ... \stopluatemplate grabs the content (like a buffer) and then processes it using the mkix conversion mechanism. Thus, in terms of output, it should be equivalent to:
> 
> \enablemode[A]
> \starttext
> \startbuffer[luatemplate]
>    <?lua if tex.modes["A"] and not tex.modes["B"] then ?>
>    \starttyping
>    A and not B
>    \stoptyping
>    <?lua else ?>
>    \starttyping
>    not (A and not B)
>    \stoptyping
>    <?lua end ?>
> \stopbuffer
> \savebuffer[file={\jobname-luatemplate.mkix}, list={luatemplate}]
> \input \jobname-luatemplate.mkix
> \stoptext
> 
> but without the need to save to an external file.
this is just for the mode right? in that case we can also can provide

<?lua tex.enablemode("A") ?>

Hans


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  reply	other threads:[~2021-03-21  1:43 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-19  3:58 Christoph Reller
2021-03-19  4:37 ` Aditya Mahajan
2021-03-19  6:59   ` Christoph Reller
2021-03-19  8:49 ` Hans Hagen
2021-03-20  5:24   ` Christoph Reller
2021-03-20  7:24     ` Aditya Mahajan
2021-03-20 11:11       ` Hans Hagen
2021-03-20 15:00         ` Christoph Reller
2021-03-20 17:07           ` Hans Hagen
2021-03-20 20:23             ` Aditya Mahajan
2021-03-20 20:49               ` Hans Hagen
2021-03-20 21:03                 ` Aditya Mahajan
2021-03-21  1:43                   ` Hans Hagen [this message]
2021-03-21  2:40                     ` Aditya Mahajan
2021-03-21 14:44             ` Christoph Reller

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