* lisp/isearch.el (isearch-mode-map): Bind `M-s e' to `isearch-edit-string'.

* lisp/isearch.el (isearch-mode-map): Bind `M-s e' to `isearch-edit-string'.
Put :advertised-binding on `M-s c', `M-s r', `M-s e'.  (Bug#16035)
(minibuffer-history-symbol): Move variable declaration closer to
its usage.

* lisp/isearchb.el (isearchb): Add `event-basic-type' on `last-command-event'.
(Bug#14785)

* lisp/gnus/gnus.el (gnus-suppress-keymap):
* lisp/gnus/gnus-art.el (gnus-article-mode-map):
* lisp/gnus/gnus-group.el (gnus-group-mode-map):
* lisp/gnus/gnus-sum.el (gnus-summary-mode-map, gnus-summary-backend-map):
Remove [backspace] key binding because it shadows DEL (bug#16035).

* lisp/gnus/mm-decode.el (mm-viewer-completion-map): Remove duplicate definition.