Hello,
I'd like to detect if a string only consists of whitespace (i.e. is
non-empty but has no characters). The filter should output an emptyMessage
at all times except when the field data1 consists of whitespace and
whitespace alone.
I have the following code with regex found online but it doesn't work.
Would anyone have any idea how I could make this work?
<$set name="regex" value="/^\s*$/">
<$list filter="[{!!data1}regexp<regex>]" emptyMessage="{{!!data1}}">
String contains only whitespace
</$list>
</$set>
Thank you,
Hubert
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