On Tuesday, July 27, 2021 at 5:06:39 AM UTC-7 TW Tones wrote:
> Looking at your example it makes me ask if perhaps a special case operator
> would be nice
> Rather than [[$id$]!is[blank]else<id>!is[blank]else[]]
> perhaps [case[$id$,<id>] where the first non blank value is used or
> nothing at all.
>
The only thing that this eliminates is an implied "!is[blank]" syntax, but
I can imagine that other conditional filters (e.g., match[], compare[],
is[tiddler], etc.) might also be useful, so I'd be hesitant to make a
special "case[...]" operator for this purpose.
In addition, to fit with the existing comma-separated operand syntax (e.g.
"[search-replace[this],[that]]") your suggestion would written slightly
differently, like this:
<$vars foo={{{ [case[$id$],<id>,{!!id},{id},2] }}}>
Also note that in the actual TiddlyTools/Macros/edit-list-vars code, I
switched to using separate filter runs with the "~" (else) prefix.
This allows whitespace to be placed between the runs so that the "cases"
are much more readable.
-e
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