[OS X Emacs] Question about completion, minibuffer, and Aquamacs

[Robert Goldman]

I have been having an oddity with completion in the SLY (enhanced Common 
Lisp) mode.  Full details are 
[here](https://github.com/joaotavora/sly/issues/547).  The issue 
persists when I start Aquamacs without customizations, so I suspect it 
is an interaction between SLY and some Aquamacs customization.  But I 
have not been able to find any customization of completion behavior in 
`/Applications/Aquamacs.app/Contents/Resources/lisp/`

Here's what happens:

- Non-Aquamacs emacs: Press completion key. Minibuffer pops up with 
message "Use C-n and C-p to navigate completions...."  I *believe* that 
in this case also the cursor is left in the minibuffer (having a little 
trouble getting clarity from other users).

- Aquamacs emacs: Minibuffer pops up with message "Use <right> and 
<left> to navigate completions..." Cursor is left in the source buffer, 
*not* the completion minibuffer. This has the bad effect of causing me 
to press <right> and then find that the cursor moves in the source 
buffer and the completion minibuffer is dismissed, which is quite 
annoying. (The fix is to switch buffers to navigate the set of 
completions, but this is cumbersome and annoying).

Any idea where this customization could be happening?

Thanks,
R
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