How to properly handle synonyms in \getparameters?

How to properly handle synonyms in \getparameters?

[Mojca Miklavec]

Dear gurus,

This question concerns both MKII and MKIV (I need the functionality in
both, even though I will try to rewrite the MKIV part as soon as I
have time).

I have a command:
    \mycommand[a][newparam=value]
with more or less the following definition:
    \def\mycommand[#1][#2]{%
        \getparameters[@@mycommand@#1@][#2]
        % ... some extra code ...
    }

However I used to use
    \mycommand[a][oldparam=value]
and now I would like to switch the syntax to
    \mycommand[a][newparam=value]
but I would like the oldparam to keep working normally.

I will read the value with \@@mycommand@a@newparam.

My question: what is the most elegant value to do that?

I can imagine something like
    \def\mycommand[#1][#2]{%
        \undefinecommand\@@mycommand@a@oldparam % pseudocode
        \getparameters[@@mycommand@#1@][#2]
        \doifdefined{\@@mycommand@a@oldparam}
            \let\@@mycommand@a@newparam\@@mycommand@a@oldparam
        % ... some extra code ...
    }

but there is most probably some more elegant solution to that?

Thank you,
    Mojca
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Re: How to properly handle synonyms in \getparameters?

[Wolfgang Schuster]

Am 03.09.2011 um 02:46 schrieb Mojca Miklavec:

> Dear gurus,
> 
> This question concerns both MKII and MKIV (I need the functionality in
> both, even though I will try to rewrite the MKIV part as soon as I
> have time).
> 
> I have a command:
>    \mycommand[a][newparam=value]
> with more or less the following definition:
>    \def\mycommand[#1][#2]{%
>        \getparameters[@@mycommand@#1@][#2]
>        % ... some extra code ...
>    }
> 
> However I used to use
>    \mycommand[a][oldparam=value]
> and now I would like to switch the syntax to
>    \mycommand[a][newparam=value]
> but I would like the oldparam to keep working normally.
> 
> I will read the value with \@@mycommand@a@newparam.
> 
> My question: what is the most elegant value to do that?
> 
> I can imagine something like
>    \def\mycommand[#1][#2]{%
>        \undefinecommand\@@mycommand@a@oldparam % pseudocode
>        \getparameters[@@mycommand@#1@][#2]
>        \doifdefined{\@@mycommand@a@oldparam}
>            \let\@@mycommand@a@newparam\@@mycommand@a@oldparam
>        % ... some extra code ...
>    }
> 
> but there is most probably some more elegant solution to that?


MkIV:

\definenamespace
  [mojca]
  [type=module,
   name=mojca,
   command=yes,
   setup=yes,
   parent=mojca]

\starttext

\setupmojca
  [oldkey=OLD,
   newkey=\mojcaparameter{oldkey}]

\starttabulate
\NC Old \EQ \mojcaparameter{oldkey} \NC\NR
\NC New \EQ \mojcaparameter{newkey} \NC\NR
\stoptabulate

\setupmojca
  [newkey=NEW]

\starttabulate
\NC Old \EQ \mojcaparameter{oldkey} \NC\NR
\NC New \EQ \mojcaparameter{newkey} \NC\NR
\stoptabulate

\stoptext

Wolfgang
___________________________________________________________________________________
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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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archive  : http://foundry.supelec.fr/projects/contextrev/
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___________________________________________________________________________________