> I'd like to list the tiddlers tagged with 'a' and not with 'b'.
> According to TW Help (http://twhelp.tiddlyspot.com/) it should be
> possible to write :
>
> <<list filter "[tag[a]] [!tag[b]]">>.
>
> But it does not produce the right ouptput for me.

The TW core filter syntax can be somewhat cryptic.  If you install
   http://www.TiddlyTools.com/#MatchTagsPlugin
you can use the more familiar *Boolean expression* syntax within the
filter, like this:
   <<list filter "[tag[a and not b]">>
or
   <<list filter "[tag[a && !b]">>

enjoy,
-e
Eric Shulman
TiddlyTools / ELS Design Studios
----------
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