According to the document of `recent-keys`, the return value does not
contain
events generated by keyboard macros, but it does.

To reproduce this:
Run Emacs by "emacs -Q",
define a keyboard macro by "<F3> a <F4>" (a keyboard macro that inserts
"a"),
and hit <F4> twice.
I expected the last two items of the return value of recent-keys are F4, F4,
but they are F4, 97.

I used the following code to check it.

(progn
  (require 'cl-lib)
  (defun my/test-recent-keys ()
    (message (prin1-to-string
              (let ((kys (recent-keys)))
                (cl-subseq kys (- (length kys) 2))))))
  (add-hook 'post-command-hook #'my/test-recent-keys))

In Emacs 24.5, the last two items are F4, F4 as expected.

Sho Takemori

In GNU Emacs 25.0.91.1 (x86_64-unknown-linux-gnu, GTK+ Version 3.16.7)
 of 2016-02-15 built on XPS-13
Repository revision: f3aaca3552ba961d13cd1ee935c1c6b075f2398a
Windowing system distributor 'The X.Org Foundation', version 11.0.11702000
System Description: Ubuntu 15.10

Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND GPM DBUS GCONF GSETTINGS
NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT LIBOTF XFT ZLIB
TOOLKIT_SCROLL_BARS GTK3 X11

Important settings:
  value of $LC_MONETARY: ja_JP.UTF-8
  value of $LC_NUMERIC: ja_JP.UTF-8
  value of $LC_TIME: ja_JP.UTF-8
  value of $LANG: ja_JP.UTF-8
  value of $XMODIFIERS: @im=ibus
  locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

Minor modes in effect:
  tooltip-mode: t
  global-eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  tool-bar-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent messages:
[backspace 67108911 backspace backspace backspace]
[67108911 backspace backspace backspace 114]
[backspace backspace backspace 114 101]
[backspace backspace 114 101 109]
[backspace 114 101 109 111]
[114 101 109 111 118]
[101 109 111 118 101]
[109 111 118 101 5]
(eldoc-schedule-timer)
funcall-interactively: End of buffer [4 times]

Load-path shadows:
None found.

Features:
(shadow sort mail-extr emacsbug message dired format-spec rfc822 mml
mml-sec epg epg-config gnus-util mm-decode mm-bodies mm-encode
mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047
rfc2045 ietf-drums mm-util help-fns mail-prsvr mail-utils kmacro
cl-extra help-mode easymenu cl-loaddefs pcase cl-lib time-date mule-util
japan-util tooltip eldoc electric uniquify ediff-hook vc-hooks
lisp-float-type mwheel x-win term/common-win x-dnd tool-bar dnd fontset
image regexp-opt fringe tabulated-list newcomment elisp-mode lisp-mode
prog-mode register page menu-bar rfn-eshadow timer select scroll-bar
mouse jit-lock font-lock syntax facemenu font-core frame cl-generic cham
georgian utf-8-lang misc-lang vietnamese tibetan thai tai-viet lao
korean japanese eucjp-ms cp51932 hebrew greek romanian slovak czech
european ethiopic indian cyrillic chinese charscript case-table epa-hook
jka-cmpr-hook help simple abbrev minibuffer cl-preloaded nadvice
loaddefs button faces cus-face macroexp files text-properties overlay
sha1 md5 base64 format env code-pages mule custom widget
hashtable-print-readable backquote dbusbind inotify dynamic-setting
system-font-setting font-render-setting move-toolbar gtk x-toolkit x
multi-tty make-network-process emacs)

Memory information:
((conses 16 92247 8518)
 (symbols 48 20094 0)
 (miscs 40 474 146)
 (strings 32 15372 4220)
 (string-bytes 1 449613)
 (vectors 16 12977)
 (vector-slots 8 514251 7318)
 (floats 8 166 121)
 (intervals 56 223 10)
 (buffers 976 11)
 (heap 1024 40476 865))