partial completion and switch-to-buffer

[Tobias Gerdin <tger@opera.com>]

Greetings,

With the advent of partial-completion-mode in Emacs 23, I was wondering
if there isn't any way to use this mechanism with switch-to-buffer ("C-x b")?

Switch-to-buffer still seems to do only prefix-matching.

I am aware of iswitch-mode and ido-mode, which does substring matching
(which is basically what I want), but find them too obtrusive. I do not
want any completion to be done unless I say so (by pressing <tab>).

I'm using Emacs CVS from 2009-07-30 (i.e. pretty much 23.1).

-Tobias