Merge from origin/emacs-26

ff9c962 ; * lisp/ldefs-boot.el: Update.
b4a251c * ; ChangeLog.3 update
d3104e3 * etc/AUTHORS: Update.
a19bfb7 Remove .art from the default list of ImageMagick extensions
6985caa Fix input after setting x-wait-for-event-timeout nil
715388a Fix two warnings in eshell.texi
d49cdd9 * lisp/minibuffer.el (completion-table-dynamic): Improve docs...
5dc4e51 * lisp/emacs-lisp/debug.el (debug-on-variable-change): Doc fi...
76ef805 Fix a typo in ELisp manual
b5e66f4 Update citations of Internet RFCs
57ece2a Fix handling of manpage references divided by hyphenation
7ad0cd6 * doc/misc/eshell.texi: Fix some @ref's.
12b7940 Fix a typo in lispref/syntax.texi

# Conflicts:
#	lisp/gnus/nnrss.el
#	lisp/mail/ietf-drums.el

3 files changed, 4 insertions, 4 deletions

diff --git a/doc/lispref/abbrevs.texi b/doc/lispref/abbrevs.texi
index b92d3701ec9..b67c014a83d 100644
--- a/doc/lispref/abbrevs.texi
+++ b/doc/lispref/abbrevs.texi
@@ -473,7 +473,7 @@ Set the property @var{prop} of abbrev table @var{table} to value @var{val}.
 
 @defun abbrev-table-get table prop
 Return the property @var{prop} of abbrev table @var{table}, or @code{nil}
-if the abbrev has no such property.
+if @var{table} has no such property.
 @end defun
 
 The following properties have special meaning:
diff --git a/doc/lispref/os.texi b/doc/lispref/os.texi
index 9766b8321fa..cb8f25df0a3 100644
--- a/doc/lispref/os.texi
+++ b/doc/lispref/os.texi
@@ -1562,7 +1562,7 @@ following form:
 The format of this list is the same as what @code{decode-time} accepts
 (@pxref{Time Conversion}), and is described in more detail there.  Any
 element that cannot be determined from the input will be set to
-@code{nil}.  The argument @var{string} should resemble an RFC 2822 or
+@code{nil}.  The argument @var{string} should resemble an RFC 822 (or later) or
 ISO 8601 string, like ``Fri, 25 Mar 2016 16:24:56 +0100'' or
 ``1998-09-12T12:21:54-0200'', but this function will attempt to parse
 less well-formed time strings as well.
diff --git a/doc/lispref/syntax.texi b/doc/lispref/syntax.texi
index 25b9b35250f..b0c04ef9c25 100644
--- a/doc/lispref/syntax.texi
+++ b/doc/lispref/syntax.texi
@@ -1041,8 +1041,8 @@ This function returns the syntax code for the raw syntax descriptor
 @var{syntax-code} component, masks off the high 16 bits which record
 the syntax flags, and returns the resulting integer.
 
-If @var{syntax} is @code{nil}, the return value is returns @code{nil}.
-This is so that the expression
+If @var{syntax} is @code{nil}, the return value is @code{nil}.  This
+is so that the expression
 
 @example
 (syntax-class (syntax-after pos))