First two elements of search-ring shown twice in minibuffer when using M-p multiple times?

[Tobias Bading]

Hello everyone,

I'm using Emacs 22.1 compiled under MacOS X and Windoze XP from the  
EMACS_22_1 tag in the cvs repository for quite some time now and both  
of 'em work great, wouldn't want to live without them :-). However,  
there's a minor bug that really bugs me. It is reproducible on both  
platforms without any customizations, i.e. my .emacs file moved out  
of the way. It goes like this:
Start a fresh emacs, then C-s 1 RET, C-s 2 RET, C-s 3 RET to search  
for "1", "2" and "3". The value of variable search-ring is ("3" "2"  
"1") now. So far, so good. Now, let's try to search for "1" again  
using M-p (isearch-ring-retreat) in isearch-mode. A C-s C-s searches  
for "3", now a M-p and you're searching for "2", but the next M-p  
does not search for "1", but for "3" again! And another M-p brings  
you to "2". This is what I noticed on both platforms: After the  
initial C-s C-s sequence, the minibuffer shows "I-search: 3", the  
cursor is still in your buffer and the tool bar as well as the menu  
bar remain unchanged. After the first M-p the minibuffer displays "I- 
search: 2" and the cursor is at the end of the minibuffer. However,  
the tool bar and the menu bar still remain unchanged. I guess this is  
part of the problem, because the second M-p finally adapts the tool  
bar and the menu bar to the fact that the cursor is in the minibuffer  
now, i.e. the Minibuf menu item appears and a few icons are grayed  
out. Unfortunately, the second M-p also jumps back to the first  
element of search-ring instead of showing the third element. So to  
reach the third element of search-ring, you have to press M-p four  
times instead of twice :-(. I hope I'm not the only one having this  
problem and that there's a fix available :-).

Have a nice weekend,
Tobias

PS: The frame's title is incorrect after the first M-p as well,  
noticeable if you have a (setq frame-title-format "Emacs: %b") in  
your .emacs file.

PPS: isearch-forward-regexp has the same problem :-(.