On 13-7-2011 10:05, Jaroslav Hajtmar wrote:
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.
As currently we cannot define a counter at the tex end (using countdef) it would introduce too much complexitity to mimmick that now. When you do: context.newcount("name") you should realize that this command is effectuated after the lua call, so if you want a counter also at the tex level you should define it at that end, \newcount\name
or it must be realized by classical way: context('\\newcount\\mycounter') context('\\mycounter=10') context('\\advance\\mycounter by5') context('\\the\\mycounter')
tex.count.name = 10 tex.count.name = tex.count.name + 5 if you never need the counter at the tex end, you can of course use a lua number instead.
similary with \newdimen, \newif etc...
at some point we will have helpers for that
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.
indeed, but if you already have the command and it's defined as unexpandable then you can use the [[ ]] method 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?
indeed
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?
context([[\def\Macro%s{Macro%s}]],converters.romannumeral(1400),1400) 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 -----------------------------------------------------------------