getcommalistsize

getcommalistsize

[Hans van der Meer]

I wanted to do something with the length of a commalist but found  
that it macro \getcommalistsize does not seem to respond.

Here is a small test:
\starttext
\def\showcommalist#1{commalist=(#1)\crlf
		(size=\getcommalistsize[#1])\crlf
		\processcommalist[#1]\showcommalistitem\crlf
		(commalistsize=\commalistsize)\par}
\def\showcommalistitem#1{item = #1 }
\showcommalist{a,b,c,d,e}
\showcommalist{1,2,3}

direct call (size=\getcommalistsize[p,q])
\stoptext

result:
commalist=(a,b,c,d,e)
(size=)
item = a item = b item = c item = d item = e
(commalistsize=5)
commalist=(1,2,3)
(size=)
item = 1 item = 2 item = 3
(commalistsize=3)
direct call (size=)

As can be seen the macro \getcommalistsize does not give a value  
back, \processcommalist works.
Am I doing something wrong here or understood it wrong?

yours sincerely,
dr. H. van der Meer

Re: getcommalistsize

[Taco Hoekwater]

Hans van der Meer wrote:
> 
> As can be seen the macro \getcommalistsize does not give a value  back, 
> \processcommalist works.
> Am I doing something wrong here or understood it wrong?

\getcommalistsize puts its result (the length of the commalist)
in \commalistsize, but does not expand to anything, so using
"direct call"s does not work.

Cheers, Taco

Re: getcommalistsize

[Hans van der Meer]

Thanks, I was right in suspecting I did not completely understand the  
effect of \getcommalistsize.
It is clear now.

yours sincerely,
dr. H. van der Meer



On Jan 22, 2006, at 18:06, Taco Hoekwater wrote:

> Hans van der Meer wrote:
>> As can be seen the macro \getcommalistsize does not give a value   
>> back, \processcommalist works.
>> Am I doing something wrong here or understood it wrong?
>
> \getcommalistsize puts its result (the length of the commalist)
> in \commalistsize, but does not expand to anything, so using
> "direct call"s does not work.
>
> Cheers, Taco
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