Re: Optimal way to defining of macros in Luacode in ConTeXt

[Jaroslav Hajtmar <hajtmar@gyza.cz>]

Hello all.
It is GREAT! Thanx Hans and Wolfgang too. It is very instructive and 
inspiring for me...
I was looking for something similar for a long time, but I have not 
found anything (not even in the CLD-MKIV and others ...). Finally, after 
yours reply to this email find something in the ctx-man.pdf from 1997 
year :-).
But I have a few questions and comments on this subject:

1. Is there any possibility to do anything similar with counters, 
dimensions etc? I trying but without success.
For example:
context.newcount(mycounter) or context.newcounter(mycounter)
context.mycounter=5 etc.

or it must be realized by classical way:
context('\\newcount\\mycounter')
context('\\mycounter=10')
context('\\advance\\mycounter by5')
context('\\the\\mycounter')

similary with \newdimen, \newif etc...

2. Any person interested in using context.setvalue{"Mymacro",somevalue) 
and context([[\def\MyMacro#1{#1}]]) syntaxes I have pointed out that the 
second syntax only operates when the command is given in a separate LUA 
file (ie file.lua) (ie not within an environment \startluacode - 
\stopluacode in classical TEX file!!!). Hans told me once that it is the 
individual categories of characters (backslash??) (if I remember correctly).
First syntax works perfectly in LUA and TeX files too.

Here I have a question. Why not comment out this case in TEX file?

\startluacode
  -- context([[\def\macro#1{#1}]])
\stopluacode

I get error:
! Undefined control sequence.
  -- context([[\def \macro
                                       #1{#1}]])
\dodostartluacode ...and \directlua \zerocount {#1
                                                   }}
l.25 \stopluacode

?

That category characters again? Comment character -- works differently 
in TEX file, and otherwise in the LUA file?
Ie. comment on the backslash?


3. Wolfgang write about using context command

\convertnumber{R}{1400} and the corresponding syntax: 
context.convertnumber("R",1400) to roman converting.
It is great, but I could not figure out how to use in combination with 
the above syntax (ie use case context.command) or find the appropriate 
conversion LUA function (I did not use a custom function).

Is there any way to do something like that:

context([[\def\Macro%s{Macro%s}]],context.convertnumber("R",1400),1400) ???
ie. TEX command is used as a LuaTeX parameter?

Thanx Jaroslav







Dne 12.7.2011 17:43, Hans Hagen napsal(a):
> On 12-7-2011 5:30, Jaroslav Hajtmar wrote:
>
>> But someone advised me that I use the better syntax:
>> context('\\def\\Mymacro\{arg of mymacro\}')
>> or context("\\def\\test#1{#1}") etc...
>
> whatever you like best
>
> context.setvalue{"Mymacro",somevalue)
>
> context([[\def\MyMacro#1{#1}]])
>
>> Exist other (best or most optimal) way to do?
>> for i = 1, 10 do
>> tex.sprint(tex.ctxcatcodes,'\\def\\macro'..ar2rom(i)..'\{macro
>> '..i..'\}')
>> context('\\def\\Macro'..ar2rom(i)..'\{Macro '..i..'\}')
>> end
>
> for i = 1, 10 do
>   context([[\def\Macro%s{Macro%s}]],ar2rom(i),i)
> end
>
> When more than one argument is given, the context command treats the
> first argument as format template.
>
> By using the context command you can see what happens with
>
> \enabletrackers[context.trace]
>
> Hans
>
>
> -----------------------------------------------------------------
>                                           Hans Hagen | PRAGMA ADE
>               Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
>     tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
>                                              | www.pragma-pod.nl
> -----------------------------------------------------------------
>

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