bug#30461: 27.0.50; Incorrect description of sentinels

[p.stephani2@gmail.com]

The manual says:

> A =E2=80=9Cprocess sentinel=E2=80=9D is a function that is called wheneve=
r the
> associated process changes status for any reason, including signals
> (whether sent by Emacs or caused by the process=E2=80=99s own actions) th=
at
> terminate, stop, or continue the process.

But that doesn't seem to be the case:

(let ((p (make-process :name "sleep"
		       :command '("sleep" "1h")
		       :sentinel (lambda (p s)
				   (message "sentinel: %S" s)))))
   (sit-for 0.1)
   (stop-process p)
   (sit-for 0.1)
   (continue-process p))

If you then check the messages buffer, you see only the following:

> sentinel: "run"

That is, the sentinel isn't called when the process is stopped or
continued.  However, the sentinel *is* called when manually sending a
STOP signal to the process.

Furthermore, the description about the possible event strings doesn't
mention "run".


In GNU Emacs 27.0.50 (build 13, x86_64-pc-linux-gnu, GTK+ Version 3.22.24)
  of 2018-02-14 built on localhost
Repository revision: 298275c595f6ca9e77f8131d34dda2b58fe1faa5
Windowing system distributor 'The X.Org Foundation', version 11.0.11903000
System Description: Debian GNU/Linux buster/sid

Recent messages:
For information about GNU Emacs and the GNU system, type C-h C-a.

Configured using:
  'configure --without-threads --enable-gcc-warnings=3Dwarn-only
  --enable-gtk-deprecation-warnings --without-pop --with-mailutils
  --enable-checking --enable-check-lisp-object-type --with-modules
  'CFLAGS=3D-O0 -ggdb3''

Configured features:
XPM JPEG TIFF GIF PNG SOUND DBUS GSETTINGS NOTIFY GNUTLS FREETYPE XFT
ZLIB TOOLKIT_SCROLL_BARS GTK3 X11 MODULES JSON

Important settings:
   value of $LANG: en_US.UTF-8
   locale-coding-system: utf-8-unix

Major mode: Lisp Interaction

Minor modes in effect:
   tooltip-mode: t
   global-eldoc-mode: t
   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

Load-path shadows:
None found.

Features:
(shadow sort mail-extr emacsbug message rmc puny seq byte-opt gv
bytecomp byte-compile cconv cl-loaddefs cl-lib dired dired-loaddefs
format-spec rfc822 mml easymenu mml-sec password-cache epa derived epg
epg-config gnus-util rmail rmail-loaddefs mm-decode mm-bodies mm-encode
mail-parse rfc2231 mailabbrev gmm-utils mailheader sendmail rfc2047
rfc2045 ietf-drums mm-util mail-prsvr mail-utils elec-pair time-date
mule-util tooltip eldoc electric uniquify ediff-hook vc-hooks
lisp-float-type mwheel term/x-win x-win term/common-win x-dnd tool-bar
dnd fontset image regexp-opt fringe tabulated-list replace newcomment
text-mode elisp-mode lisp-mode prog-mode register page menu-bar
rfn-eshadow isearch timer select scroll-bar mouse jit-lock font-lock
syntax facemenu font-core term/tty-colors 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 composite charscript charprop
case-table epa-hook jka-cmpr-hook help simple abbrev obarray 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 95233 8069)
  (symbols 48 20245 1)
  (miscs 40 40 121)
  (strings 32 28327 2177)
  (string-bytes 1 757222)
  (vectors 16 14136)
  (vector-slots 8 499270 14020)
  (floats 8 50 67)
  (intervals 56 223 0)
  (buffers 992 12))

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