On Saturday, November 7, 2015 at 10:43:28 PM UTC-8, Dave wrote:
>
> I want to be able to do something like this in a macro:
> <<races event:"$(currentTiddler)$-<<now YYYY-0MM-0DD>>">>
> ...in order to have the macro variable $event$ (or is that called a 
> parameter?)  to be equal to the current tiddler + the date/time right now, 
> like "test tiddler - 2015-11-07"
> I tried the above and the value for $event$ reverts to its default.
> I also tried $(now)$ but that didn't work either.  I know in TWC something 
> like that would work if you used "\" in front of each ">" inside the outer 
> ones, but that doesn't work either.
>

The $macrocall widget allows you to use other macros to specify the 
parameter values.

Try this:
\define event(what,when) <<races event:"$what$ - $when$">>
<$macrocall $name="event" what=<<currentTiddler>> when=<<now YYYY-0MM-0DD
>>/>

enjoy,
-e

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