Document the shorthand hints displayed by M-x

* doc/emacs/m-x.texi (M-x): Document the numeric meaning of
suggest-key-bindings.  Document the shorthand hints for commands
that have no key bindings.  Document that M-x completion ignores
obsolete commands.

* etc/NEWS: Move the M-x entry to "Editing Changes" and mark it as
documented.

1 files changed, 3 insertions, 1 deletions

diff --git a/etc/NEWS b/etc/NEWS
index bd8edee5538..8a3bd8e30bd 100644
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -148,7 +148,6 @@ the `network-security-level' variable.
 +++
 ** C-h l now also lists the commands that were run.
 
-** M-x suggests shorthands and ignores obsolete commands for completion.
 ** x-select-enable-clipboard is renamed select-enable-clipboard.
 x-select-enable-primary and renamed select-enable-primary.
 Additionally they both now apply to all systems (OSX, GNUstep, Windows, you
@@ -316,6 +315,9 @@ at configure time.
 
 * Editing Changes in Emacs 25.1
 
++++
+** M-x suggests shorthands and ignores obsolete commands for completion.
+
 ** Successive single-char deletions are collapsed in the undo-log just like
 successive char insertions.