bug#20436: 25.0.50; syntax-multiline not documented

[Tom Tromey <tom@tromey.com>]

I noticed some code in syntax.el for the syntax-multiline property.
This doesn't seem to be documented anywhere, but I think it should be.




In GNU Emacs 25.0.50.2 (x86_64-unknown-linux-gnu, GTK+ Version 3.14.12)
 of 2015-04-19 on bapiya
Repository revision: 61f67da4e4b1a4aa3409d4b6758fe046037fbe88
Windowing system distributor `Fedora Project', version 11.0.11603000
Configured using:
 `configure --prefix=/home/tromey/Emacs/install'

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

Important settings:
  value of $LANG: en_US.utf8
  value of $XMODIFIERS: @im=ibus
  locale-coding-system: utf-8-unix

Major mode: Emacs-Lisp

Minor modes in effect:
  diff-auto-refine-mode: t
  flyspell-mode: t
  which-function-mode: t
  global-auto-revert-mode: t
  desktop-save-mode: t
  erc-services-mode: t
  erc-list-mode: t
  erc-menu-mode: t
  erc-autojoin-mode: t
  erc-ring-mode: t
  erc-networks-mode: t
  erc-pcomplete-mode: t
  erc-track-mode: t
  erc-match-mode: t
  erc-netsplit-mode: t
  erc-hl-nicks-mode: t
  erc-button-mode: t
  erc-fill-mode: t
  erc-stamp-mode: t
  erc-irccontrols-mode: t
  erc-noncommands-mode: t
  erc-move-to-prompt-mode: t
  erc-readonly-mode: t
  savehist-mode: t
  tooltip-mode: t
  global-eldoc-mode: t
  eldoc-mode: t
  electric-indent-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  auto-composition-mode: t
  auto-encryption-mode: t
  auto-compression-mode: t
  column-number-mode: t
  line-number-mode: t
  auto-fill-function: do-auto-fill

Recent messages:
Saving file /home/tromey/Emacs/Multi/PLAN...
Wrote /home/tromey/Emacs/Multi/PLAN
Saving file /home/tromey/Emacs/Multi/PLAN...
Wrote /home/tromey/Emacs/Multi/PLAN
Saving file /home/tromey/Emacs/Multi/PLAN...
Wrote /home/tromey/Emacs/Multi/PLAN
Type C-x 1 to delete the help window, C-M-v to scroll help.
Mark saved where search started [2 times]
Mark set
Mark saved where search started
Quit

Load-path shadows:
/home/tromey/.emacs.d/elpa/bubbles-0.5/bubbles hides /home/tromey/Emacs/install/share/emacs/25.0.50/lisp/play/bubbles

Features:
(shadow bbdb-message mailalias mail-hist emacsbug debug log-view
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url-privacy url-expand url-methods url-history url-cookie url-domsuf
url-util url-parse url-vars sort smiley gnus-cite mail-extr qp
gnus-async gnus-bcklg gnus-ml disp-table gnus-topic nndraft nnmh
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make-network-process dbusbind gfilenotify dynamic-setting
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multi-tty emacs)

Memory information:
((conses 16 1886374 102577)
 (symbols 48 123934 0)
 (miscs 40 33584 42)
 (strings 32 469971 49248)
 (string-bytes 1 11979959)
 (vectors 16 111010)
 (vector-slots 8 2312396 8980)
 (floats 8 3337 1446)
 (intervals 56 170204 9355)
 (buffers 976 323)
 (heap 1024 331141 126832))

Tom