Hi again everyone,
use case: I want to build MyTemplate which shows a link to the current
tiddler, with the text of the link being either a specific value given
as parameter, or "title" by default.
So I'm trying to assign a variable "v" with the value of variable
"param" if "param" is defined, or some default value otherwise. I tried
this:
<$set name="param" value="myvalue">
<$set name="v" filter="[<param>]" emptyValue="default">
<$text text=<<v>>>
</$set>
</$set>
but it doesn't work. I also tried various combinations like:
<$set name="v" filter="[<param>]" value=<<param>> emptyValue="default">
but that would assign either "myvalue" or nothing instead of
"default"... I'm confused.
I guess another way to phrase the question is: how can I check whether a
variable has a value or not?
Regards
Erwan
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