Thanks Eric!
This also works. I'm impressed that you remember what you did and retrieve
data from the large set of macros/functions you've written. I'm guessing
you've got to hand some form of searchable database that allows the
retrieval of bite-sized data chunks :)
Regards, Bob
On Sunday, 9 August 2020 16:00:49 UTC+1, Eric Shulman wrote:
>
> On Sunday, August 9, 2020 at 5:04:13 AM UTC-7, Bob Flandard wrote:
>>
>> I'm trying and failing to write a filter expression that lists all
>> tiddlers that are tagged "some name" (call this list of tiddlers resultA)
>> and then extend that list to include all tiddlers that are tagged with the
>> names in resultA. For the general case this would continue recursively
>> until no new tiddlers were added to the list.
>>
>
> I did exactly this function as part of the InsideTW "page navigation"
> interface.
>
> It does a recursive "walk" of a "tag tree", and generates a flat list of
> tiddler titles:
>
> \define toc-list(here,max,exclude,level:"1")
> <$list filter="""[tag[$here$]] $exclude$ -[[$here$]]""">
> <$link /><br>
> <$reveal default="$level$" type="nomatch" text="$max$">
> <$macrocall $name="toc-list" here=<<currentTiddler>> max="$max$"
> exclude="""$exclude$ -[[$here$]]""" level={{{ [[$level$]add[1]] }}}/>
> </$reveal>
> </$list>
> \end
>
> Invoke it like this:
> <<toc-list "some name">>
> where "some name" is the top-level tag for your tree.
>
> Notes:
> 1) There is also an optional "max" parameter to limit the depth of
> traversal
> 2) The "exclude" and "level" parameters are only for internal use by the
> macro itself
> 3) The default output just lists each title, one per line. If you want a
> bullet list, you could change this line:
> <$link /><br>
> to this:
> <li><$link /></li>
> and if you want a numbered list, also wrap the macro invocation within
> <ol>...</ol>, like this:
> <ol><<toc-list "some name">></ol>
>
> enjoy,
> -e
>
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