Ctx ... Lua

Ctx ... Lua

[Procházka Lukáš]

Hello,

sometimes in this mail discussion I'm encountering a Ctx/Lua command which has been unknown for me or I would use other (known) commands to do the job.

So - would it be possible to explain

- what's the difference/advantage btw \directlua and \ctxlua

- what \ctxcommand{} does

- what \cldcontext{} does?

TIA.

Lukas


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Re: Ctx ... Lua

[Wolfgang Schuster]

Am 22.08.2012 um 13:15 schrieb Procházka Lukáš <LPr@pontex.cz>:

> Hello,
> 
> sometimes in this mail discussion I'm encountering a Ctx/Lua command which has been unknown for me or I would use other (known) commands to do the job.
> 
> So - would it be possible to explain
> 
> - what's the difference/advantage btw \directlua and \ctxlua

No difference, just another name, there are even more synonyms.

> - what \ctxcommand{} does

\ctxcommand{<...>} == \ctxlua{commands.<...>}

> - what \cldcontext{} does?

\cldcontext{<...>} == \ctxlua{context(<...>)}

There is also \cldcommand{<...>} which is a short form for \ctxlua{context.<...>}

All these commands access functions in the “commands” or the “context” namespace.

Wolfgang
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Re: Ctx ... Lua

[Hans Hagen]

On 22-8-2012 13:26, Wolfgang Schuster wrote:
>
> Am 22.08.2012 um 13:15 schrieb Procházka Lukáš <LPr@pontex.cz>:
>
>> Hello,
>>
>> sometimes in this mail discussion I'm encountering a Ctx/Lua command which has been unknown for me or I would use other (known) commands to do the job.
>>
>> So - would it be possible to explain
>>
>> - what's the difference/advantage btw \directlua and \ctxlua
>
> No difference, just another name, there are even more synonyms.

The \ctxlua variant is somewhat more future proof. In the past 
\directlua had a mandate extra argument. Also, the \ctxlua macro
can use a dedicated message namespace if needed and future versions 
might have more tracing.

Hans

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