Here's my version:
<$list filter="[search{possearch}!search{negsearch}] ~[search{possearch}]
-[[possearch]] -$:/HistoryList">
<<currentTiddler>><br/>
</$list>
I changed $:/temp/possearch and $:/temp/negsearch for my research. I'm sure
you'll see how to change them back. Because the possearch term will always
contain the thing to be searched, it needed to be subtracted. Same for the
HistoryList.
This worked in my test, including when negsearch was not present.
HTH
On Thursday, December 12, 2019 at 11:01:16 AM UTC-8, Stephen Kimmel wrote:
>
> I want to combine a pair of search operators within a single filter where
> one will be positive and the other negative. For example, I might want a
> list of all the tiddlers that contain the word "Mark" but exclude all the
> tiddlers that contain the word "temple." The solution I suspect would
> involve an expression that looks something like
>
> [search[Mark]!search[Temple]]
>
> but, of course, I want to use variables in the expression. So what I have
> at the moment has an expression that looks like this:
>
> search{$:/temp/possearch}!search{$:/temp/negsearch}
>
> The problem I'm having occurs when $:/temp/negsearch is either empty or
> doesn't exist. In that set of circumstances, I get no matches. I would like
> the search to act as though it were
>
> search{$:/temp/possearch}
>
> or
>
> search{$:/temp/possearch}!search[xyz123]
>
> but I can't figure out how to do that.
>
> Any ideas?
>
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