bug#22714: 25.0.91; Minibuffer quirk in C-x r SPC

[Kaushal Modi]

OK, I found the change that caused this.

http://git.savannah.gnu.org/cgit/emacs.git/commit/?h=emacs-25&id=0da7d35c6754b44d1ef4383e4a8ba9b98afc3a4c

diff --git a/lisp/register.el b/lisp/register.el
index 1c64a9a..6a5792c 100644
--- a/lisp/register.el
+++ b/lisp/register.el

@@ -161,7 +161,7 @@ display such a window regardless."

collect c)))

(unwind-protect

(progn

- (while (memq (read-event (propertize prompt 'face 'minibuffer-prompt))

+ (while (memq (read-key (propertize prompt 'face 'minibuffer-prompt))

help-chars)

(unless (get-buffer-window buffer)

(register-preview buffer 'show-empty)))

It's the use of read-key instead of read-event that's causing this.

Stefan should be able to comment more on why that changes the behavior of the prompt staying vs disappearing.

--
Kaushal Modi

On Wed, Feb 17, 2016 at 8:56 AM, Kaushal Modi <kaushal.modi@gmail.com> wrote:

I don't have a solution but I can confirm this behavior. 

In emacs 24.5, the "Point to Register" prompt disappears after pressing "1".

In emacs 25.x, the prompt stays there after pressing "1".

I tried edebugging in both 24.5 and 25.x but the behavior looks the same when doing edebug (the prompt disappears).

I briefly looked at the register.el, but couldn't spot any change there that could be causing this. So the change is probably in some common library in elisp/C.

--
Kaushal Modi