\define foo(element)
<$list filter="$element$ +[is[blank]]"> O{{!!title}}O </$list>
\end
(disregard the miscoloration from google)
Calling <<foo>>
without an argument I was expecting this to return OO
but nothing is returned. If I change is
into !is
also nothing is returned.
Docs for is[blank]
reads:
blank | is blank (i.e. is a zero length string)
Why is there no output - neither for is
nor !is
? Bug?
Thanx!