doc: Remove “Viewing Bugs within Emacs”.

This is a followup to d499253d47cca2694944c5fd1f4b582e5206890a and related
commits.

* doc/contributing.texi (Viewing Bugs within Emacs): Remove.
(Debbugs User Interfaces): Refer to the ‘debbugs-ug’ manual.

Change-Id: Idddff940302efe5689c8b459e0b141acaae74395
Signed-off-by: Ludovic Courtès <ludo@gnu.org>

1 files changed, 2 insertions, 83 deletions

diff --git a/doc/contributing.texi b/doc/contributing.texi
index e4d87ed91ef..db24703271b 100644
--- a/doc/contributing.texi
+++ b/doc/contributing.texi
@@ -629,87 +629,6 @@ copyright-update}.  If you want to do it automatically after each buffer
 save then add @code{(add-hook 'after-save-hook 'copyright-update)} in
 Emacs.
 
-@node Viewing Bugs within Emacs
-@subsection Viewing Bugs within Emacs
-
-Emacs has a nice minor mode called @code{bug-reference}, which, when
-combined with @samp{emacs-debbugs} (the Emacs package), can be used to
-open links such as @samp{<https://bugs.gnu.org/58697>} or
-@samp{<https://issues.guix.gnu.org/58697>} as bug report buffers.  From
-there you can easily consult the email thread via the Gnus interface,
-reply or modify the bug status, all without leaving the comfort of
-Emacs!  Below is a sample configuration to add to your @file{~/.emacs}
-configuration file:
-
-@lisp
-;;; Bug references.
-(require 'bug-reference)
-(add-hook 'prog-mode-hook #'bug-reference-prog-mode)
-(add-hook 'gnus-mode-hook #'bug-reference-mode)
-(add-hook 'erc-mode-hook #'bug-reference-mode)
-(add-hook 'gnus-summary-mode-hook #'bug-reference-mode)
-(add-hook 'gnus-article-mode-hook #'bug-reference-mode)
-
-;;; This extends the default expression (the top-most, first expression
-;;; provided to 'or') to also match URLs such as
-;;; <https://issues.guix.gnu.org/58697> or <https://bugs.gnu.org/58697>.
-;;; It is also extended to detect "Fixes: #NNNNN" git trailers.
-(setq bug-reference-bug-regexp
-      (rx (group (or (seq word-boundary
-                          (or (seq (char "Bb") "ug"
-                                   (zero-or-one " ")
-                                   (zero-or-one "#"))
-                              (seq (char "Pp") "atch"
-                                   (zero-or-one " ")
-                                   "#")
-                              (seq (char "Ff") "ixes"
-                                   (zero-or-one ":")
-                                   (zero-or-one " ") "#")
-                              (seq "RFE"
-                                   (zero-or-one " ") "#")
-                              (seq "PR "
-                                   (one-or-more (char "a-z+-")) "/"))
-                          (group (one-or-more (char "0-9"))
-                                 (zero-or-one
-                                  (seq "#" (one-or-more
-                                            (char "0-9"))))))
-                     (seq (? "<") "https://bugs.gnu.org/"
-                          (group-n 2 (one-or-more (char "0-9")))
-                          (? ">"))
-                     (seq (? "<") "https://issues.guix.gnu.org/"
-                          (? "issue/")
-                          (group-n 2 (one-or-more (char "0-9")))
-                          (? ">"))))))
-(setq bug-reference-url-format "https://issues.guix.gnu.org/%s")
-
-(require 'debbugs)
-(require 'debbugs-browse)
-(add-hook 'bug-reference-mode-hook #'debbugs-browse-mode)
-(add-hook 'bug-reference-prog-mode-hook #'debbugs-browse-mode)
-
-;; The following allows Emacs Debbugs user to open the issue directly within
-;; Emacs.
-(setq debbugs-browse-url-regexp
-      (rx line-start
-          "http" (zero-or-one "s") "://"
-          (or "debbugs" "issues.guix" "bugs")
-          ".gnu.org" (one-or-more "/")
-          (group (zero-or-one "cgi/bugreport.cgi?bug="))
-          (group-n 3 (one-or-more digit))
-          line-end))
-
-;; Change the default when run as 'M-x debbugs-gnu'.
-(setq debbugs-gnu-default-packages '("guix" "guix-patches"))
-
-;; Show feature requests.
-(setq debbugs-gnu-default-severities
- '("serious" "important" "normal" "minor" "wishlist"))
-@end lisp
-
-For more information, refer to @ref{Bug Reference,,, emacs, The GNU
-Emacs Manual} and @ref{Minor Mode,,, debbugs-ug, The Debbugs User
-Guide}.
-
 @node Alternative Setups
 @section Alternative Setups
 
@@ -2510,8 +2429,8 @@ For example, to list all open issues on @code{guix-patches}, hit:
 For a more convenient (shorter) way to access both the bugs and patches
 submissions, you may want to configure the
 @code{debbugs-gnu-default-packages} and
-@code{debbugs-gnu-default-severities} Emacs variables (@pxref{Viewing
-Bugs within Emacs}).
+@code{debbugs-gnu-default-severities} Emacs variables (@pxref{Minor
+Mode,,, debbugs-ug, The Debbugs User Guide}).
 
 To search for bugs, @samp{@kbd{M-x} debbugs-gnu-guix-search} can be
 used.