Macro argument handling problem!

Macro argument handling problem!

[Verhaag, G.C.H.M.]

Hi,

I try this example from the wiki page System Macros/Argument handling:

\def\dodefinesomething[#1][#2]%
   {\getparameters[\??xx#1][#2]}

\def\definesomething%
   {\dodoubleargumentwithset\dodefinesomething}

\starttext
  \definesomething[alfa][variable=test]
\stoptext


Running this yields

! Undefined control sequence

I'm trying to write a few macros with optional delimited arguments with 
key-value sets and started reading the appropriate pages, but can't 
figure out why this example fails to run.

Anybody any idea?

Regards,
Gerard Verhaag
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Re: Macro argument handling problem!

[Wolfgang Schuster]

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Am 21.04.2011 um 12:28 schrieb Verhaag, G.C.H.M.:

> Hi,
> 
> I try this example from the wiki page System Macros/Argument handling:
> 
> \def\dodefinesomething[#1][#2]%
>  {\getparameters[\??xx#1][#2]}
> 
> \def\definesomething%
>  {\dodoubleargumentwithset\dodefinesomething}
> 
> \starttext
> \definesomething[alfa][variable=test]
> \stoptext
> 
> 
> Running this yields
> 
> ! Undefined control sequence
> 
> I'm trying to write a few macros with optional delimited arguments with key-value sets and started reading the appropriate pages, but can't figure out why this example fails to run.
> 
> Anybody any idea?

I guess the message comes from your namespace which is in this form
only allowed in unprotected mode, to enter you need \unprotect before
and \protect after your command declarations. Another problem is that
you use a system namespace (two “?” and two letters) but for modules
we use now four “?” and also more than two letter, e.g.

\def\????something{@@@@something}

\def\definesomething
  {\dodoubleargumentwithset\dodefinesomething}

\def\dodefinesomething[#1][#2]%
  {\getparameters[\????something#1][#2]}

You should also take a look at the \definenamespace command which
creates the \define… and \setup… commands for you:

- http://wiki.contextgarden.net/Module_Namespaces
- http://tex.stackexchange.com/questions/15157/how-to-make-a-ruler/15185#15185

Wolfgang



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___________________________________________________________________________________

Re: Macro argument handling problem!

[luigi scarso]

On Thu, Apr 21, 2011 at 1:32 PM, Wolfgang Schuster
<schuster.wolfgang@googlemail.com> wrote:
>
> Am 21.04.2011 um 12:28 schrieb Verhaag, G.C.H.M.:
>
> Hi,
>
> I try this example from the wiki page System Macros/Argument handling:
>
> \def\dodefinesomething[#1][#2]%
>  {\getparameters[\??xx#1][#2]}
>
> \def\definesomething%
>  {\dodoubleargumentwithset\dodefinesomething}
>
> \starttext
> \definesomething[alfa][variable=test]
> \stoptext
>
>
> Running this yields
>
> ! Undefined control sequence
>
> I'm trying to write a few macros with optional delimited arguments with
> key-value sets and started reading the appropriate pages, but can't figure
> out why this example fails to run.
>
> Anybody any idea?
>
> I guess the message comes from your namespace which is in this form
> only allowed in unprotected mode, to enter you need \unprotect before
> and \protect after your command declarations



! Undefined control sequence.

system          > tex > error on line 8 in file test.tex: Undefined
control sequence ...

 1     \unprotect
 2     \def\definesomething%
 3      {\dodoubleargumentwithset\dodefinesomething}
 4     \def\dodefinesomething[#1][#2]%
 5      {\getparameters[\??xx#1][#2]}
 6     \protect
 7     \starttext
 8 >>   \definesomething[alfa][variable=test]
 9     \stoptext
10
11
12

<argument> \??xx
                 alfa
\setsomevalue #1#2->\@EA \def \csname #1
                                        #2\endcsname
\p!doassign ...EAEA \setsomevalue \fi \fi {#1}{#2}
                                                  {#3}
\xprocesscommaitem ...@relax@ #1==\empty \@relax@
                                                  \@EAEAEA \xprocesscommaite...
\xdogetparameters #1]->\xprocesscommaitem #1,]
                                              ,\@relax@
\next1 #1,->\@@dodowithsetcommand {#1}
                                      \doprocesscommaitem
...
l.8  \definesomething[alfa][variable=test]


-- 
luigi
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___________________________________________________________________________________

Re: Macro argument handling problem!

[Wolfgang Schuster]

Am 21.04.2011 um 13:35 schrieb luigi scarso:

> On Thu, Apr 21, 2011 at 1:32 PM, Wolfgang Schuster
> <schuster.wolfgang@googlemail.com> wrote:
>> 
>> Am 21.04.2011 um 12:28 schrieb Verhaag, G.C.H.M.:
>> 
>> Hi,
>> 
>> I try this example from the wiki page System Macros/Argument handling:
>> 
>> \def\dodefinesomething[#1][#2]%
>>  {\getparameters[\??xx#1][#2]}
>> 
>> \def\definesomething%
>>  {\dodoubleargumentwithset\dodefinesomething}
>> 
>> \starttext
>> \definesomething[alfa][variable=test]
>> \stoptext
>> 
>> 
>> Running this yields
>> 
>> ! Undefined control sequence
>> 
>> I'm trying to write a few macros with optional delimited arguments with
>> key-value sets and started reading the appropriate pages, but can't figure
>> out why this example fails to run.
>> 
>> Anybody any idea?
>> 
>> I guess the message comes from your namespace which is in this form
>> only allowed in unprotected mode, to enter you need \unprotect before
>> and \protect after your command declarations
> 
> 
> 
> ! Undefined control sequence.
> 
> system          > tex > error on line 8 in file test.tex: Undefined
> control sequence ...
> 
> 1     \unprotect
> 2     \def\definesomething%
> 3      {\dodoubleargumentwithset\dodefinesomething}
> 4     \def\dodefinesomething[#1][#2]%
> 5      {\getparameters[\??xx#1][#2]}
> 6     \protect
> 7     \starttext
> 8 >>   \definesomething[alfa][variable=test]
> 9     \stoptext
> 10
> 11
> 12
> 
> <argument> \??xx
>                 alfa
> \setsomevalue #1#2->\@EA \def \csname #1
>                                        #2\endcsname
> \p!doassign ...EAEA \setsomevalue \fi \fi {#1}{#2}
>                                                  {#3}
> \xprocesscommaitem ...@relax@ #1==\empty \@relax@
>                                                  \@EAEAEA \xprocesscommaite...
> \xdogetparameters #1]->\xprocesscommaitem #1,]
>                                              ,\@relax@
> \next1 #1,->\@@dodowithsetcommand {#1}
>                                      \doprocesscommaitem
> ...
> l.8  \definesomething[alfa][variable=test]

\definenamespace
  [something]
  [   type=module,
      name=something,
   command=yes]

\starttext
\definesomething[alfa][variable=test]
\stoptext

Wolfgang

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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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___________________________________________________________________________________

Re: Macro argument handling problem!

[Verhaag, G.C.H.M.]

On 04/21/2011 01:32 PM, Wolfgang Schuster wrote:
>
> Am 21.04.2011 um 12:28 schrieb Verhaag, G.C.H.M.:
>
>> Hi,
>>
>> I try this example from the wiki page System Macros/Argument handling:
>>
>> \def\dodefinesomething[#1][#2]%
>>  {\getparameters[\??xx#1][#2]}
>>
>> \def\definesomething%
>>  {\dodoubleargumentwithset\dodefinesomething}
>>
>> \starttext
>> \definesomething[alfa][variable=test]
>> \stoptext
>>
>>
>> Running this yields
>>
>> ! Undefined control sequence
>>
>> I'm trying to write a few macros with optional delimited arguments 
>> with key-value sets and started reading the appropriate pages, but 
>> can't figure out why this example fails to run.
>>
>> Anybody any idea?
>
> I guess the message comes from your namespace which is in this form
> only allowed in unprotected mode, to enter you need \unprotect before
> and \protect after your command declarations. Another problem is that
> you use a system namespace (two “?” and two letters) but for modules
> we use now four “?” and also more than two letter, e.g.
>
> \def\????something{@@@@something}
>
> \def\definesomething
>   {\dodoubleargumentwithset\dodefinesomething}
>
> \def\dodefinesomething[#1][#2]%
>   {\getparameters[\????something#1][#2]}
>
> You should also take a look at the \definenamespace command which
> creates the \define… and \setup… commands for you:
>
> - http://wiki.contextgarden.net/Module_Namespaces
> - 
> http://tex.stackexchange.com/questions/15157/how-to-make-a-ruler/15185#15185
>
> Wolfgang
>
>
Hi,

Thanks for the tips and the references to the appropriate wiki pages!

Regards,
Gerard Verhaag
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!

maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________