Thierry Lanfranchi wrote: > Is that "not sorting on single letter search" feature wanted (maybe > even RFC stuff that I haven't read yet), and if so, can I enable > sorting even in that case, or is it to be considered a strange > behavior and I need to look for more informations in order to solve it ? Yes. One clue might be that a single letter substring search filter will not be indexed (while a leading two-letter substring search filter will). An unindexed search may not be sortable : it's been a long time since I messed with this part of the code and without reading it again I'm not sure. Anyway, if you made the sort control mandatory in your search, the server should respond with an error in the case that it's unable to sort. Did you see any response control with information like that in it ?