bug#46606: Enabling Hyperbole unbinds 'h' key in Gnus; toggling bindings twice unbinds 'h' globally

[Bodertz]

I use:  Editor:      GNU Emacs 28.0.50 (build 1, x86_64-pc-linux-gnu, GTK+ 
Version 3.24.24, cairo version 1.16.0)
        Hyperbole:   7.1.3
        Sys Type:    x86_64-pc-linux-gnu
        OS Type:     gnu/linux
        Window Sys:  pgtk
        News Reader: Gnus v5.13

Steps to reproduce:

 1. (require 'hyperbole)
 
 2. {M-x gnus RET}
    - 'h' is unbound
    - should run describe-mode (found in gnus-group-mode-map)

3. {M-x hyperbole-toggle-bindings} while in Gnus
   - 'h' remains unbound

4. {M-x hyperbole-toggle-bindings} again while in Gnus
   - 'h' remains unbound

5. Switch to the *scratch* buffer: {C-x b *scratc C-q h* RET}
   - 'h' is now unbound here as well


I'm not sure what information I should be providing.
gnus-group-mode-map (and gnus-summary-mode-map) is long and confusing,
and I figure you can find it yourself easily, so I haven't included it
here.  I can if you want.

I have included a diff of gnus-summary-mode-map before and after
requiring hyperbole.  I use this instead of gnus-group-mode-map because
I first found the issue there; I don't use 'h' in the Group buffer.  In
gnus-summary-mode-map, 'h' should run gnus-summary-show-article.  As the
diff shows, requiring hyperboling removes gnus-summary-show-article (as
well as gnus-summary-article-map and gnus-summary-scroll-down).


------


diff -u --label \#\<buffer\ keymap\> --label \#\<buffer\ \*Help\*\> 
/tmp/buffer-content-g4KVJE /tmp/buffer-content-la1sHb
--- #<buffer keymap>
+++ #<buffer *Help*>
@@ -73,9 +73,9 @@
               (110 . gnus-summary-next-unread-subject)
               (16 . gnus-summary-prev-same-subject)
               (14 . gnus-summary-next-same-subject)
-              (13 . gnus-summary-scroll-down)
+              (13)
               (117 . gnus-summary-clear-mark-forward))
-             nil nil nil nil gnus-summary-next-page 
gnus-summary-tick-article-forward nil gnus-summary-mark-as-processable nil nil 
gnus-summary-execute-command nil nil nil gnus-cache-enter-article nil 
gnus-summary-best-unread-article negative-argument 
gnus-summary-first-unread-article gnus-summary-limit-map digit-argument 
digit-argument digit-argument digit-argument digit-argument digit-argument 
digit-argument digit-argument digit-argument digit-argument nil nil 
gnus-summary-beginning-of-article gnus-summary-expand-window 
gnus-summary-end-of-article gnus-summary-mark-as-dormant nil 
gnus-summary-article-map gnus-summary-backend-map gnus-summary-cancel-article 
gnus-summary-mark-as-read-backward gnus-summary-mark-as-expirable 
gnus-summary-followup-with-original gnus-summary-goto-map gnus-summary-help-map 
gnus-summary-increase-score nil gnus-summary-mime-map gnus-summary-lower-score 
gnus-summary-mark-map gnus-summary-next-article gnus-summary-save-map 
gnus-summary-prev-article gnus-summary-exit-no-update 
gnus-summary-reply-with-original gnus-summary-send-map gnus-summary-thread-map 
gnus-summary-tick-article-backward gnus-summary-score-map gnus-summary-wash-map 
gnus-uu-extract-map gnus-summary-buffer-map gnus-summary-exit-map 
gnus-summary-prev-unseen-article nil gnus-summary-next-unseen-article 
gnus-summary-refer-parent-article nil nil gnus-summary-post-news 
gnus-article-view-part gnus-summary-catchup-and-exit 
gnus-summary-mark-as-read-forward gnus-summary-edit-article 
gnus-summary-followup gnus-summary-show-article 
gnus-summary-select-article-buffer nil gnus-summary-goto-article 
gnus-summary-kill-same-subject-and-select gnus-summary-goto-last-article 
gnus-summary-mail-other-window gnus-summary-next-unread-article 
gnus-summary-save-article gnus-summary-prev-unread-article gnus-summary-exit 
gnus-summary-reply gnus-summary-isearch-article gnus-summary-toggle-header 
gnus-summary-tick-article-forward nil gnus-summary-browse-url 
gnus-summary-limit-to-unread nil nil nil gnus-summary-pipe-output nil nil 
gnus-summary-prev-page]
+             nil nil nil nil gnus-summary-next-page 
gnus-summary-tick-article-forward nil gnus-summary-mark-as-processable nil nil 
gnus-summary-execute-command nil nil nil gnus-cache-enter-article nil 
gnus-summary-best-unread-article negative-argument 
gnus-summary-first-unread-article gnus-summary-limit-map digit-argument 
digit-argument digit-argument digit-argument digit-argument digit-argument 
digit-argument digit-argument digit-argument digit-argument nil nil 
gnus-summary-beginning-of-article gnus-summary-expand-window 
gnus-summary-end-of-article gnus-summary-mark-as-dormant nil t 
gnus-summary-backend-map gnus-summary-cancel-article 
gnus-summary-mark-as-read-backward gnus-summary-mark-as-expirable 
gnus-summary-followup-with-original gnus-summary-goto-map gnus-summary-help-map 
gnus-summary-increase-score nil gnus-summary-mime-map gnus-summary-lower-score 
gnus-summary-mark-map gnus-summary-next-article gnus-summary-save-map 
gnus-summary-prev-article gnus-summary-exit-no-update 
gnus-summary-reply-with-original gnus-summary-send-map gnus-summary-thread-map 
gnus-summary-tick-article-backward gnus-summary-score-map gnus-summary-wash-map 
gnus-uu-extract-map gnus-summary-buffer-map gnus-summary-exit-map 
gnus-summary-prev-unseen-article nil gnus-summary-next-unseen-article 
gnus-summary-refer-parent-article nil nil gnus-summary-post-news 
gnus-article-view-part gnus-summary-catchup-and-exit 
gnus-summary-mark-as-read-forward gnus-summary-edit-article 
gnus-summary-followup gnus-summary-show-article t nil gnus-summary-goto-article 
gnus-summary-kill-same-subject-and-select gnus-summary-goto-last-article 
gnus-summary-mail-other-window gnus-summary-next-unread-article 
gnus-summary-save-article gnus-summary-prev-unread-article gnus-summary-exit 
gnus-summary-reply gnus-summary-isearch-article gnus-summary-toggle-header 
gnus-summary-tick-article-forward nil gnus-summary-browse-url 
gnus-summary-limit-to-unread nil nil nil gnus-summary-pipe-output nil nil 
gnus-summary-prev-page]
        #^^[1 0
              #^^[2 0 #1# nil nil nil nil nil nil nil nil nil nil nil nil nil 
nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil]
              nil nil nil nil nil nil nil nil nil nil nil nil nil nil nil]

Diff finished.  Wed Feb 17 14:51:28 2021