Re: [NTG-context] What's the difference between \dodoubleargument and \dodoubleempty?

2008-10-21 Thread Hans Hagen
Ruini Xue wrote:
> Hans Hagen  wxs.nl> writes:
> 
>> Ruini Xue wrote:
>>> It's difficult to understand them from the code. 
>> the first one issues a warning when no argument is given
> 
> You mean both of them ask the following \command to take two mandatory 
> arguments? I try this example:

we use optimized variants for #args <=3 but the error messags still 
shows up for

\doquadrupleargument\relax

\doquadrupleargument\relax[1]

\doquadrupleargument\relax[1][2]


\doquadrupleempty\relax

\doquadrupleempty\relax[1]

\doquadrupleempty\relax[1][2]


-
   Hans Hagen | PRAGMA ADE
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  | www.pragma-pod.nl
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Re: [NTG-context] What's the difference between \dodoubleargument and \dodoubleempty?

2008-10-21 Thread Wolfgang Schuster
On Tue, Oct 21, 2008 at 2:03 PM, Ruini Xue <[EMAIL PROTECTED]> wrote:
> Hans Hagen  wxs.nl> writes:
>
>>
>> Ruini Xue wrote:
>> > It's difficult to understand them from the code.
>>
>> the first one issues a warning when no argument is given
>
> You mean both of them ask the following \command to take two mandatory
> arguments? I try this example:
>
> ==
> \def\test
>  {\dodoubleargument\dotest} % use \dodoubleempty
>
> \def\dotest[#1][#2]

You need a comment sign at the end of the line.

\def\dotest[#1][#2]%

>  {\iffirstargument
>   First arg: #1
>  \fi
>  \ifsecondargument
>   Second arg: #2
>  \fi}
>
> \test[ok][ok] % 1. this is ok
>
> \test [ok] [] % 2. warning?

This is just a empty argument.

> \test [wrong] % 3. Error: lack one arg
> ==
>
> both 1 and 2 can print "First arg" and "Second arg", so I am confused what's
> "no argument is given"

Wolfgang
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Re: [NTG-context] What's the difference between \dodoubleargument and \dodoubleempty?

2008-10-21 Thread Hans Hagen
Ruini Xue wrote:
> It's difficult to understand them from the code. 

the first one issues a warning when no argument is given


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   Hans Hagen | PRAGMA ADE
   Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
  tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
  | www.pragma-pod.nl
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[NTG-context] What's the difference between \dodoubleargument and \dodoubleempty?

2008-10-21 Thread Ruini Xue
It's difficult to understand them from the code. 

-- ruini 

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