[OS X Emacs] Aquamacs 2.0 annoyance

[Robert Morelli]

I find some of the ways Aquamacs 2.0 handles scrolling and minibuffer 
annoying.

1. When I scroll rapidly, say by spinning my mouse wheel, the text pane 
does
not scroll smoothly. Instead, it does not respond for a second or two, 
then jerkily
jumps to a few new locations on the way to its final destination, a 
little like a
pebble skipping on the water. Aquamacs 1.x didn't have the smoothest 
scrolling
either, but the problem is significantly worse in 2.0. I don't know of 
any other
OS X application that behaves this way.

The scrolling is also jerky when I drag the scrollbar.

2. A related problem is that the size of the vertical scrollbar changes 
as you
scroll. It seems to be related to the density of visible text. Again, 
Aquamacs
1.x used to do this, but in a less exaggerated way. My understanding is 
that
the scrollbar size should indicate how large the file is compared to the 
current
view. Aquamacs seems to be using the number of characters on the screen as
the measure of what's in view. That's quite unintuitive to me. Vertical 
scrolling
is about lines, not about characters. Again, I don't know of any other 
OS X app
that handles the scrollbar size this way.

3. When the mini-buffer updates, it causes the whole window to flash. 
The minibuffer
seems to momentarily disappear, the vertical scrollbar extends all the 
way to the
bottom of the window frame, then the minibuffer reappears with the new 
message
and the scrollbar goes back. It's really quite irritating to see this.

4. When I'm scrolling down using the mouse wheel and I reach the end of 
the buffer,
the minibuffer displays an "End of buffer" message repeatedly. This is 
particularly
annoying because of the flashing that occurs when the minibuffer is 
updated. In
Aquamacs 1.x, the message would be displayed only once. (Of course, it's 
similar
when scrolling up and I reach the beginning of the buffer.)