bug#9532: 24.0.50; `special-display-regexps' is no longer respected

[Drew Adams]

ping.

> The bug is still there, in both the first and second
> deliveries of pretest #1.
> 
> I have non-nil pop-up-frames.
> I have special-display-regexps set to: ("[ ]?[*][^*]+[*]").
> 
> And yet, when I do M-x report-emacs-bug, instead of buffer 
> *unsent mail to bug-gnu-emacs@gnu.org* being popped up in
> its own, special-display frame, that buffer _replaces_ the
> current buffer in the same (non-special-display) frame.
> 
> IOW, `special-display-regexps' is still being ignored.
> 
> The reason I mistakenly thought that the bug had been fixed 
> is that I do _not_ see the problem for *info* buffers: they
> are correctly opened in special-display frames.
> 
> I don't know why there is this difference, since both buffers
> match `special-display-regexps'.  Note that both 
> `same-window-buffer-names' and `same-window-regexps' are nil.
> 
> This bug has been dragging on for a very long time now.  It
> was fixed temporarily with Martin's code, but things were
> broken again when his code was dropped.
> 
> Please, pretty please fix this bug as a priority, before the 
> next pretest.  Thx.