* lisp/progmodes/bug-reference.el:
* lisp/progmodes/cfengine.el:
* lisp/progmodes/cmacexp.el:
* lisp/progmodes/cpp.el:
* lisp/progmodes/cwarn.el:
* lisp/progmodes/dcl-mode.el:
* lisp/progmodes/executable.el:
* lisp/progmodes/flymake.el:
* lisp/progmodes/gud.el:
* lisp/progmodes/hideshow.el:
* lisp/progmodes/icon.el:
* lisp/progmodes/inf-lisp.el:
* lisp/progmodes/js.el:
* lisp/progmodes/ld-script.el:
* lisp/progmodes/make-mode.el:
* lisp/progmodes/modula2.el:
* lisp/progmodes/pascal.el:
* lisp/progmodes/perl-mode.el:
* lisp/progmodes/prog-mode.el:
* lisp/progmodes/simula.el:
* lisp/progmodes/xscheme.el: Remove redundant :group args.

Run "TZ=UTC0 admin/update-copyright".

* lisp/progmodes/bug-reference.el (bug-reference-setup-from-irc-alist):
Change SERVER-REGEXP to NETWORK-REGEXP in docstring.
* lisp/progmodes/bug-reference.el (bug-reference--maybe-setup-from-irc):
Change semantics from requiring a match of channel OR server to
requiring a match of both (if both are configured).
* lisp/progmodes/bug-reference.el (bug-reference-try-setup-from-erc):
New defun doing the auto-setup for ERC.
(bug-reference--run-auto-setup): Run bug-reference-try-setup-from-erc.
* etc/NEWS: Extend entry describing bug-reference auto-setup.

* lisp/progmodes/bug-reference.el: Add rcirc defvars for silencing the
byte-compiler.

* lisp/progmodes/bug-reference.el (bug-reference-setup-from-irc-alist):
New defvar for configuring bug regexp and URL based on IRC channel and
server names.
(bug-reference--maybe-setup-from-irc): New defun doing the setup given
channel and server.
(bug-reference-try-setup-from-rcirc): New defun calling the above for
rcirc buffers.
(bug-reference--run-auto-setup): Enable the auto-setup for rcirc.
* etc/NEWS: Extend entry describing bug-reference auto-setup.

Also add a TODO that I should implement something similar for
IRC (rcirc/ERC).

* lisp/progmodes/bug-reference.el (bug-reference-setup-from-mail-alist):
Auto-setup also with groups matching orgmode and tramp.

* lisp/progmodes/bug-reference.el (bug-reference-try-setup-from-vc):
Use default-directory if not in a file-visiting buffer to determine
VC URL.

Tries to guess suitable bug-reference-bug-regexp and
bug-reference-url-format values based on version control URL (in file
buffers) and mail information (in Gnus summary and article buffers).

* lisp/progmodes/bug-reference.el
(bug-reference--maybe-setup-from-vc): New defun.
(bug-reference-setup-from-vc-alist): New defvar defining setup rules
based on version control URL.
(bug-reference-try-setup-from-vc): New defun using above defvar.
(bug-reference--maybe-setup-from-mail): New defun.
(bug-reference-setup-from-mail-alist): New defvar defining setup rules
based on mail/newsgroups and header values.
(bug-reference-try-setup-from-gnus): New defun using above defvar.
(bug-reference--try-setup-gnus-article): New defun.
(bug-reference--run-auto-setup): New defun.
(bug-reference-mode): Call bug-reference--run-auto-setup as
:after-hook.
(bug-reference-prog-mode): Call bug-reference--run-auto-setup as
:after-hook.

186152ba40 Pacify gcc -Wunused-function on Ubuntu 18.04.3
4cd143aded Fix copyright years by hand
365e01cc9f Update copyright year to 2020
cd2c156163 ; * etc/NEWS: Make the description of XDG fallback more ac...

# Conflicts:
#	etc/NEWS
#	etc/refcards/ru-refcard.tex