On Thursday, July 2, 2020 at 4:11:36 AM UTC-7, Saq Imtiaz wrote:
>
> You could try something like this (untested):
> mystring +[!regexp{!!foo}] [{!!foo}!is[blank]then[]else[mystring]]
>
Slightly simplified and tested on tiddlywiki.com:
{{{ mystring +[!regexp{!!foo}] [{!!foo}is[blank]then[mystring]] }}}
-e
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