Merge from origin/emacs-26

818a68b * etc/HISTORY: Update for Emacs 26.2 release.
e04aa5a ; ChangeLog.3 update
8297e97 * etc/AUTHORS: Update.
8582936 Improve documentation of 'read-command'
dc81c05 ; * CONTRIBUTE: Mention where to ask for the copyright assign...
b77723a Fix an outdated URL in a comment

7 files changed, 178 insertions, 16 deletions

diff --git a/CONTRIBUTE b/CONTRIBUTE
index e8bb95df45a..a5433e30d37 100644
--- a/CONTRIBUTE
+++ b/CONTRIBUTE
@@ -54,6 +54,12 @@ packages the patch's commit message and changes.  To send just one
 such patch without additional remarks, you can use a command like
 'git send-email --to=bug-gnu-emacs@gnu.org 0001-DESCRIPTION.patch'.
 
+Once the cumulative amount of your submissions exceeds about 15 lines
+of non-trivial changes, we will need you to assign to the FSF the
+copyright for your contributions.  Ask on emacs-devel@gnu.org, and we
+will send you the necessary form together with the instructions to
+fill and email it, in order to start this legal paperwork.
+
 ** Issue tracker (a.k.a. "bug tracker")
 
 The Emacs issue tracker at https://debbugs.gnu.org lets you view bug
diff --git a/ChangeLog.3 b/ChangeLog.3
index 235c8bb180e..e7f4d866326 100644
--- a/ChangeLog.3
+++ b/ChangeLog.3
@@ -1,3 +1,148 @@
+2019-04-11  Eli Zaretskii  <eliz@gnu.org>
+
+	Improve documentation of 'read-command'
+
+	* src/minibuf.c (Fread_command): Document the return value
+	when DEFAULT-VALUE is nil and the user enters nothing.
+	* doc/lispref/minibuf.texi (High-Level Completion): Document
+	the printed representation of a symbol whose name is empty.
+	(Bug#3522)
+
+2019-04-11  Eli Zaretskii  <eliz@gnu.org>
+
+	Fix an outdated URL in a comment
+
+	* src/emacs.c: Fix reference to Cocoa CoreFoundation Release
+	Notes.  (Bug#35225)
+
+2019-04-11  Basil L. Contovounesios  <contovob@tcd.ie>
+
+	Backport: Fix comment-empty-lines docstring (bug#35152)
+
+	* lisp/newcomment.el (comment-empty-lines): Consistently use US
+	commas in docstring.  Fix indentation of and typo in custom :type.
+
+	(cherry picked from commit 690c678fb6c1fb5b2f828f9bb90782bd0b01c399)
+
+2019-04-11  Alex Branham  <alex.branham@gmail.com>
+
+	Backport: Update documentation for indent-relative functions
+
+	* lisp/indent.el (indent-relative): Document what happens when there
+	  is no previous nonblank line.
+	* doc/lispref/text.texi (Relative Indent): Document
+	  indent-relative-first-indent-point instead of obsolete
+	  indent-relative-maybe. Fix documentation of which argument from
+	  'indent-relative' is used.
+
+	Bug#34858
+
+	(cherry picked from commit 10cd65878c741d2a22a1f2c36c54fcad4e516f72)
+
+2019-04-11  Noam Postavsky  <npostavs@gmail.com>
+
+	Update nxml-mode.texi: completion now gives xmlns="-!-"
+
+	* doc/misc/nxml-mode.texi (Completion): As of 2016-01-16 "* lisp/nxml:
+	Use standard completion; it also works for company-mode", completing
+	an attribute when there is only one candidate inserts both quotes.
+	Update the example accordingly.
+
+2019-04-10  Eric Abrahamsen  <eric@ericabrahamsen.net>
+
+	Note that choose-completion-string-functions funcs take four args
+
+	* lisp/simple.el (choose-completion-string-functions): Functions in
+	  this list actually need to accept four arguments, though the fourth
+	  should be ignored.
+
+2019-04-10  Gemini Lasswell  <gazally@runbox.com>
+
+	Address name conflicts in EIEIO documentation (bug#31660)
+
+	* doc/misc/eieio.texi (Quick Start): Rename the class used in the
+	example from 'record' to 'person'.
+	(Building Classes): Advise user to check for name conflicts before
+	naming a class.  Add a missing apostrophe.
+	(Making New Objects): Correct grammar.  Rename the class used in the
+	example from 'record' to 'my-class'.
+
+2019-04-09  Mattias Engdegård  <mattiase@acm.org>
+
+	Clarify the TESTFN argument to `alist-get'
+
+	* lisp/subr.el (alist-get):
+	Rephrase the initial text to clarify the meaning of the TESTFN argument.
+	It's an equality predicate, not a look-up function (Bug#35206).
+
+	(cherry picked from commit c81465580fe262f28ce47502c00f4afcbe3b8f8d)
+
+2019-04-08  Eli Zaretskii  <eliz@gnu.org>
+
+	* src/editfns.c (Fnarrow_to_region): Doc fix.  (Bug#35163)
+
+2019-04-06  Eli Zaretskii  <eliz@gnu.org>
+
+	Fix doc strings of 'vc-version-diff' and 'vc-version-ediff'
+
+	* lisp/vc/vc.el (vc-version-diff, vc-version-ediff): Describe
+	arguments in the doc strings.  (Bug#35019)
+
+2019-04-06  Eli Zaretskii  <eliz@gnu.org>
+
+	Improve documentation of set-window-start
+
+	* doc/lispref/windows.texi (Window Start and End):
+	* src/window.c (Fset_window_start): Document that reliable
+	setting of a window start position requires to adjust point to
+	be visible.  (Bug#34038)
+
+2019-04-06  Eli Zaretskii  <eliz@gnu.org>
+
+	Improve documentation of window parameters
+
+	* doc/lispref/windows.texi (Cyclic Window Ordering): Describe
+	the effect of the 'other-window' window parameter.
+	(Window Parameters): Improve the descriptions of window
+	parameters.  Move the detailed description of the
+	'quit-restore' window parameter from here...
+	(Quitting Windows): ...to here.  (Bug#35063)
+
+2019-04-06  Eli Zaretskii  <eliz@gnu.org>
+
+	Improve commentary in frame.el
+
+	* lisp/frame.el: Improve commentary for display-* functions.
+	(Bug#35058)
+
+2019-04-06  Mauro Aranda  <maurooaranda@gmail.com>
+
+	Fix typo in a doc string
+
+	* lisp/autorevert.el (global-auto-revert-mode): Fix a typo.
+	(Bug#35165)
+
+2019-03-20  Paul Eggert  <eggert@cs.ucla.edu>
+
+	Say which regexp ranges should be avoided
+
+	* doc/lispref/searching.texi (Regexp Special): Say that
+	regular expressions like "[a-m-z]" and "[[:alpha:]-~]" should
+	be avoided, for the same reason that regular expressions like
+	"+" and "*" should be avoided: POSIX says their behavior is
+	undefined, and they are confusing anyway.  Also, explain
+	better what happens when the bound of a range is a raw 8-bit
+	byte; the old explanation appears to have been obsolete
+	anyway.  Finally, say that ranges like "[\u00FF-\xFF]" that
+	mix non-ASCII characters and raw 8-bit bytes should be
+	avoided, since it’s not clear what they should mean.
+
+2019-03-20  Nicolas Petton  <nicolas@petton.fr>
+
+	* etc/AUTHORS: Update.
+
+	* ; ChangeLog.3 update
+
 2019-03-20  Eli Zaretskii  <eliz@gnu.org>
 
 	Improve indexing of the user manual
@@ -64946,7 +65091,7 @@
 
 This file records repository revisions from
 commit 9d56a21e6a696ad19ac65c4b405aeca44785884a (exclusive) to
-commit 0f523deec1c1e9e2a5a3474f912aa2183d3fe33d (inclusive).
+commit 85829363f728c410e33ffdc3839202977b2115cc (inclusive).
 See ChangeLog.1 for earlier changes.
 
 ;; Local Variables:
diff --git a/doc/lispref/minibuf.texi b/doc/lispref/minibuf.texi
index 6c37fa92d6c..cfea336a9e5 100644
--- a/doc/lispref/minibuf.texi
+++ b/doc/lispref/minibuf.texi
@@ -1333,7 +1333,8 @@ is a string, @code{read-command} interns it before returning it.
 If it is a list, @code{read-command} interns the first element of this list.
 If @var{default} is @code{nil}, that means no default has been
 specified; then if the user enters null input, the return value is
-@code{(intern "")}, that is, a symbol whose name is an empty string.
+@code{(intern "")}, that is, a symbol whose name is an empty string,
+and whose printed representation is @code{##} (@pxref{Symbol Type}).
 
 @example
 (read-command "Command name? ")
diff --git a/etc/AUTHORS b/etc/AUTHORS
index 73c5245678f..2f7e01575bd 100644
--- a/etc/AUTHORS
+++ b/etc/AUTHORS
@@ -163,7 +163,7 @@ Alexandru Harsanyi: wrote soap-client.el soap-inspect.el
 and changed emacs3.py vc-hooks.el vc.el xml.el
 
 Alex Branham: changed bibtex.el dired-x.el dired.el em-rebind.el eww.el
-  imenu.el modes.texi programs.texi
+  imenu.el indent.el modes.texi programs.texi text.texi
 
 Alex Coventry: changed files.el
 
@@ -442,8 +442,8 @@ Bartosz Duszel: changed allout.el bib-mode.el cc-cmds.el hexl.el icon.el
 
 Basil L. Contovounesios: changed simple.el message.el sequences.texi
   bibtex.el css-mode-tests.el css-mode.el customize.texi display.texi
-  gnus-art.el json-tests.el json.el lists.texi man.el modes.texi rcirc.el
-  shr-color.el text.texi url-handlers.el
+  gnus-art.el json-tests.el json.el lists.texi man.el modes.texi
+  newcomment.el rcirc.el shr-color.el text.texi url-handlers.el
 
 Bastian Beischer: changed include.el mru-bookmark.el refs.el
   semantic/complete.el senator.el
@@ -1354,8 +1354,8 @@ Eli Zaretskii: wrote [bidirectional display in xdisp.c]
   tty-colors.el
 and changed xdisp.c msdos.c w32.c display.texi w32fns.c simple.el
   files.el fileio.c keyboard.c w32proc.c files.texi w32term.c text.texi
-  dispnew.c frames.texi emacs.c dispextern.h lisp.h process.c term.c
-  window.c and 1125 other files
+  dispnew.c emacs.c frames.texi dispextern.h lisp.h window.c process.c
+  term.c and 1125 other files
 
 Emanuele Giaquinta: changed configure.ac rxvt.el charset.c etags.c
   fontset.c frame.el gnus-faq.texi loadup.el lread.c sh-script.el
@@ -1380,7 +1380,7 @@ Eric Abrahamsen: changed eieio-base.el registry.el nnimap.el
   gnus-registry.el files.el files.texi windows.texi eieio-test-persist.el
   eieio.el gnus-start.el gnus-sum.el gnus.texi nnir.el buffers.texi
   checkdoc.el files-tests.el gnus-bcklg.el gnus-group.el nnmairix.el
-  org.el org.texi and 3 other files
+  org.el org.texi and 4 other files
 
 Eric Bélanger: changed image.c
 
@@ -1682,9 +1682,9 @@ Geert Kloosterman: changed which-func.el
 Gemini Lasswell: wrote edebug-tests.el kmacro-tests.el testcover-tests.el
 and changed edebug.el cl-macs.el cl-generic.el ert-x.el cl-print.el
   edebug-test-code.el edebug.texi eieio-compat.el generator.el subr.el
-  autorevert-tests.el cl-print-tests.el emacs-lisp/debug.el eval-tests.el
-  eval.c filenotify-tests.el generator-tests.el kmacro.el lread.c
-  map-tests.el map.el and 9 other files
+  autorevert-tests.el cl-print-tests.el eieio.texi emacs-lisp/debug.el
+  eval-tests.el eval.c filenotify-tests.el generator-tests.el kmacro.el
+  lread.c map-tests.el and 10 other files
 
 Geoff Gole: changed align.el ibuffer.el whitespace.el
 
@@ -3258,6 +3258,8 @@ Matt Hodges: changed textmodes/table.el faces.el iswitchb.el simple.el
   edebug.texi eldoc.el em-hist.el em-pred.el fixit.texi icon.el ido.el
   locate.el paragraphs.el pcomplete.el repeat.el and 3 other files
 
+Mattias Engdegård: changed subr.el
+
 Matt Lundin: changed org-agenda.el org.el org-bibtex.el org-footnote.el
   ox-publish.el org-bbdb.el org-datetree.el org-gnus.el
 
@@ -3270,7 +3272,7 @@ Matt Simmons: changed message.el
 Matt Swift: changed dired.el editfns.c lisp-mode.el mm-decode.el
   outline.el progmodes/compile.el rx.el simple.el startup.el
 
-Mauro Aranda: changed files.texi os.texi
+Mauro Aranda: changed autorevert.el files.texi os.texi
 
 Maxime Edouard Robert Froumentin: changed gnus-art.el mml.el
 
@@ -3649,7 +3651,7 @@ Noam Postavsky: changed lisp-mode.el progmodes/python.el xdisp.c
   cl-macs.el lisp-mode-tests.el emacs-lisp/debug.el data.c simple.el
   term.el ert.el subr.el help-fns.el bytecomp.el cl-print.el
   elisp-mode.el eval.c ffap.el modes.texi search.c sh-script.el
-  cl-preloaded.el and 248 other files
+  cl-preloaded.el and 249 other files
 
 Nobuyoshi Nakada: co-wrote ruby-mode.el
 
diff --git a/etc/HISTORY b/etc/HISTORY
index b239904253b..bf03692d3ff 100644
--- a/etc/HISTORY
+++ b/etc/HISTORY
@@ -216,6 +216,8 @@ GNU Emacs 25.3 (2017-09-11) emacs-25.3
 
 GNU Emacs 26.1 (2018-05-28) emacs-26.1
 
+GNU Emacs 26.2 (2019-04-12) emacs-26.2
+
 
 ----------------------------------------------------------------------
 This file is part of GNU Emacs.
diff --git a/src/emacs.c b/src/emacs.c
index 68835cac985..6ed4b0ed87a 100644
--- a/src/emacs.c
+++ b/src/emacs.c
@@ -157,9 +157,14 @@ static uprintmax_t heap_bss_diff;
 /* To run as a background daemon under Cocoa or Windows,
    we must do a fork+exec, not a simple fork.
 
-   On Cocoa, CoreFoundation lib fails in forked process:
+   On Cocoa, CoreFoundation lib fails in forked process, see Mac OS X
+   Leopard Developer Release Notes for CoreFoundation Framework:
+
    http://developer.apple.com/ReleaseNotes/
-   CoreFoundation/CoreFoundation.html)
+   CoreFoundation/CoreFoundation.html
+
+   Note: the above is no longer available on-line, but it can be found
+   via the "Wayback machine", https://web.archive.org.
 
    On Windows, a Cygwin fork child cannot access the USER subsystem.
 
diff --git a/src/minibuf.c b/src/minibuf.c
index a0025e22720..10fd5e56ac3 100644
--- a/src/minibuf.c
+++ b/src/minibuf.c
@@ -995,7 +995,8 @@ the current input method and the setting of`enable-multibyte-characters'.  */)
 DEFUN ("read-command", Fread_command, Sread_command, 1, 2, 0,
        doc: /* Read the name of a command and return as a symbol.
 Prompt with PROMPT.  By default, return DEFAULT-VALUE or its first element
-if it is a list.  */)
+if it is a list.  If DEFAULT-VALUE is omitted or nil, and the user enters
+null input, return a symbol whose name is an empty string.  */)
   (Lisp_Object prompt, Lisp_Object default_value)
 {
   Lisp_Object name, default_string;