At John's installation there are both multiple TWikis and multi-web Twikis--he had set up softlinked files to let different TWikis share files (this would allow file sharing between multiple webs in a single TWiki as well; it's a very interesting technique.)

What he wanted was a quick way to search all of the webs in a single TWiki.

PeterThoeny pointed out that there should be some automagic way to create a selector list for search forms; he suggested that TWiki create another implicit variable. This has not been implemented yet. Currently, web selector lists are hand-coded in the form in which they are used (but see SearchAllWebsSelectors for the original ideas.)

Peter also noted that there needs to be a way to visually distinguish the results from individual webs when all webs were being searched; this has been implemented (mostly by Peter.)

Finally, he noted that some webs should not be included in a generic search of all webs; there may be ``gnostic'' or ``invisible'' webs at a site which require the user to know the URL for the web in order to gain access. This has been implemented, but currently suffers from a logic bug that makes it do something silly (see SearchAllWebsBugs.)