On Thursday 05 February 2009 01:36:16 pm Wolfgang Schuster wrote:
> Am 05.02.2009 um 21:26 schrieb Bart C. Wise:
> > When a function is called, I would like to remove any leading space.
> > Then the function can control the spacing. If I don't remove spaces,
> > it then makes a difference whether or not I have a space before the
> > function is called.
> >
> > Is there a way to do this and not cause any side effects?
>
> You can use \removeunwantedpsaces to remove preceding spaces before
> your command and \ignorespaces to gobble spaces after your command.
>
> A faster version of your macro is:
>
> \def\MyFunction
> {\dosingleempty\doMyFunction}
>
> \def\doMyFunction[#1]%
> {\removeunwantedspaces\executeifdefined{myfunction:#1}
> {\getvalue{myfunction:default}}}
>
> \setvalue{myfunction:1}{\medspace dog }
> \setvalue{myfunction:2}{\medspace cat }
> \setvalue{myfunction:default}{\ldots}
>

Thanks Wolfgang for the answer!
And thanks for the coding hints, they are always appreciated!

Bart