* 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

Run "TZ=UTC0 admin/update-copyright $(git ls-files)".

* lisp/calendar/diary-lib.el (diary-face-attrs):
* lisp/cedet/semantic/db-ebrowse.el (semanticdb-ebrowse-file-match):
* lisp/cedet/srecode/document.el
(srecode-document-autocomment-common-nouns-abbrevs)
(srecode-document-autocomment-function-alist)
(srecode-document-autocomment-return-first-alist)
(srecode-document-autocomment-return-last-alist)
(srecode-document-autocomment-param-alist)
(srecode-document-autocomment-param-type-alist):
* lisp/desktop.el (desktop-clear-preserve-buffers):
* lisp/elide-head.el (elide-head-headers-to-hide):
* lisp/erc/erc-backend.el (erc-encoding-coding-alist):
* lisp/erc/erc-ezbounce.el (erc-ezb-regexp):
* lisp/files.el (auto-save-file-name-transforms):
* lisp/gnus/deuglify.el (gnus-outlook-deuglify-attrib-cut-regexp)
(gnus-outlook-deuglify-attrib-verb-regexp)
(gnus-outlook-deuglify-attrib-end-regexp):
* lisp/gnus/gnus-fun.el (gnus-x-face-omit-files, gnus-face-omit-files):
* lisp/gnus/spam.el (spam-spamassassin-positive-spam-flag-header):
* lisp/htmlfontify.el (hfy-src-doc-link-unstyle):
* lisp/info-look.el (info-lookup-file-name-alist):
* lisp/international/rfc1843.el (rfc1843-newsgroups-regexp):
* lisp/mail/feedmail.el (feedmail-queue-slug-suspect-regexp):
* lisp/mail/rmail-spam-filter.el (rsf-white-list, rsf-definitions-alist):
* lisp/man.el (Man-name-local-regexp):
* lisp/net/ange-ftp.el (ange-ftp-dumb-unix-host-regexp):
* lisp/net/newst-backend.el (newsticker-auto-mark-filter-list):
* lisp/net/rcirc.el (rcirc-authinfo, rcirc-coding-system-alist):
* lisp/net/tramp-adb.el (tramp-adb-prompt):
* lisp/org/org-agenda.el (org-agenda-hide-tags-regexp)
(org-agenda-category-icon-alist):
* lisp/org/org-protocol.el (org-protocol-data-separator):
* lisp/org/org-table.el (org-table-number-regexp):
* lisp/org/ox-latex.el (org-latex-known-warnings):
* lisp/progmodes/bug-reference.el (bug-reference-bug-regexp):
* lisp/progmodes/hideif.el (hide-ifdef-header-regexp):
* lisp/progmodes/idlw-help.el (idlwave-help-doclib-name)
(idlwave-help-doclib-keyword):
* lisp/progmodes/idlwave.el (idlwave-no-change-comment):
* lisp/progmodes/python.el (python-shell-prompt-input-regexps)
(python-shell-prompt-output-regexps, python-shell-prompt-regexp)
(python-shell-prompt-block-regexp, python-shell-prompt-output-regexp)
(python-shell-prompt-pdb-regexp, python-shell-compilation-regexp-alist)
(python-pdbtrack-stacktrace-info-regexp):
* lisp/progmodes/sql.el (sql-send-terminator, sql-ansi-statement-starters):
* lisp/speedbar.el (speedbar-directory-unshown-regexp)
(speedbar-file-unshown-regexp):
* lisp/textmodes/flyspell.el (flyspell-mark-duplications-exceptions)
(flyspell-tex-command-regexp):
* lisp/textmodes/paragraphs.el (sentence-end-base):
* lisp/textmodes/tildify.el (tildify-pattern, tildify-space-pattern):
* lisp/vc/ediff-init.el (ediff-metachars):
* lisp/vc/vc-git.el (vc-git-root-log-format):
* lisp/vc/vc-hg.el (vc-hg-root-log-format):
* lisp/whitespace.el (whitespace-indentation-regexp)
(whitespace-space-after-tab-regexp):
* lisp/woman.el (woman-manpath-man-regexp)
(woman-imenu-generic-expression):
Use 'regexp' instead of 'string' as type for values that are regexps
in defcustom declarations.