Hi FrD

Thanks for the quick answer !
> I did'nt know these details.
> I think the documentation on tiddlywiki.com should be updated : the
> example in the tiddler "Macro Definitions in WikiText" doesn't use commas
> to separate the parameters.
>

Oops, you're quite right, or rather my past self was correct: macro
definitions can use spaces or commas to separate parameters. As the
documentation says: "The parameter separator (sep) is any sequence of
characters that does not match a param-name. Among other things, this
includes commas, spaces and linefeeds":

http://tiddlywiki.com/Macro%20Definition%20Syntax

Best wishes

Jeremy.



>
>
> FrD
>
> Le lundi 28 septembre 2015 19:20:38 UTC+2, Jeremy Ruston a écrit :
>>
>> Hi FrD
>>
>> There are a couple of things going on:
>>
>> * Parameters in a macro definition are separated with commas. It is
>> unfortunate that this is different than the white space separator used when
>> invoking macros
>> * In your example, the macro invocation of testmacro2 is unpacking to
>> <<textmacro2 {{!!title}} {{!!foo}}>>. The missing value for the beta
>> parameter comes out blank, causing the value you've specified with $gamma$
>> to be passed as the parameter "beta" to testmacro2. The workaround is to
>> use named parameters and quotes:
>>
>> Here's a corrected version:
>>
>> \define testmacro1(alpha:"{{!!title}}",beta,gamma:"{{!!foo}}")
>> <<testmacro2 alpha:"""$alpha$""" beta:"""$beta$""" gamma:"""$gamma$""">>
>> \end
>>
>> \define testmacro2(alpha,beta,gamma)
>> alpha = $alpha$
>> <br>
>> beta = $beta$
>> <br>
>> gamma = $gamma$
>> \end
>>
>> <<testmacro1>>
>>
>> Best wishes
>>
>> Jeremy
>>
>>
>>


-- 
Jeremy Ruston
mailto:[email protected]

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