Yes, I definitely plan to include auto-complete for tags at some point. You've pointed out the main difficulty, and in the interest in getting the next release out as soon as possible, I'd decided to defer it to the milestone after the next one.

When it comes time to implement this, I think del.icio.us is the canonical example.

It looks like entering tags with autocompletion can be implemented using the Autocompleter from Script.aculo.us, see http://wiki.script.aculo.us/scriptaculous/show/Autocompleter.Base under Tokenized autocompletion

Updating tickets (#373, #105, #107, #117, #125, #126, #147, #177, #182, #183, #185, #197, #202, #206, #220, #236, #240, #276, #283, #294, #300, #305, #309, #312, #317, #324, #337, #357, #358, #360, #433, #452, #462, #17, #74, #82, #92, #123, #265, #431, #440, #475, #94, #256, #258, #464)

Updating tickets (#743, #752, #768, #781, #535, #47, #295, #298, #805, #806, #324, #584, #97, #592, #344, #603, #114, #629, #636, #645, #393, #405, #433, #434, #202, #462, #220, #233, #310, #95, #635, #397, #94)

+ 1 for this - very usefull feature (like in del.icio.us), should be quite simple, love to see it in 1.8 ;)

Duplicated association with ticket #872 was added

(In revision:746066972cde259548d9fc33bc088196c3033c29) Asynchronous autocompleter for tags. Closes #462

Branch: master

(In revision:7c1b4c0a2421d4f5300261ccfa3b54831caa795a) Add autocompletion for tags on todo edit form, too. Re #462.

Branch: master

cool stuff!

(In revision:746066972cde259548d9fc33bc088196c3033c29) Asynchronous autocompleter for tags. Closes #462

Branch: master

(In revision:7c1b4c0a2421d4f5300261ccfa3b54831caa795a) Add autocompletion for tags on todo edit form, too. Re #462.

Branch: master