Make Gnus respect mode-line-buffer-identification-keymap

* lisp/gnus/gnus-group.el (gnus-group-set-mode-line): Use
'propertized-buffer-identification' to buttonise and fontify the
buffer name.
* lisp/gnus/gnus-sum.el (gnus-set-mode-line):
* lisp/gnus/gnus.el (gnus-mode-line-buffer-identification): Adjust
calls to above.
* lisp/gnus/gnus-srvr.el (gnus-browse-foreign-server): Add missing
'gnus-modeline-buffer-identification' call (bug#57977).

4 files changed, 11 insertions, 10 deletions

diff --git a/lisp/gnus/gnus-group.el b/lisp/gnus/gnus-group.el
index fcad601d0c3..d1098be6fd3 100644
--- a/lisp/gnus/gnus-group.el
+++ b/lisp/gnus/gnus-group.el
@@ -1717,9 +1717,7 @@ already.  If INFO-UNCHANGED is non-nil, dribble buffer is not updated."
           (setq mode-string (substring mode-string 0 (- max-len 4))))
         (prog1
             (setq mode-line-buffer-identification
-                  (gnus-mode-line-buffer-identification
-                   (list (propertize mode-string
-                                     'face 'mode-line-buffer-id))))
+                  (gnus-mode-line-buffer-identification (list mode-string)))
           (set-buffer-modified-p modified))))))
 
 (defun gnus-group-group-name ()
diff --git a/lisp/gnus/gnus-srvr.el b/lisp/gnus/gnus-srvr.el
index e659a648e10..315381a6dd8 100644
--- a/lisp/gnus/gnus-srvr.el
+++ b/lisp/gnus/gnus-srvr.el
@@ -829,9 +829,10 @@ claim them."
           (erase-buffer))
         (gnus-browse-mode)
         (setq mode-line-buffer-identification
-              (list
-               (format
-                "Gnus: %%b {%s:%s}" (car method) (cadr method))))
+              (gnus-mode-line-buffer-identification
+               (list
+                (format
+                 "Gnus: %%b {%s:%s}" (car method) (cadr method)))))
         (let ((buffer-read-only nil)
               name
               (prefix (let ((gnus-select-method orig-select-method))
diff --git a/lisp/gnus/gnus-sum.el b/lisp/gnus/gnus-sum.el
index dde60caee7e..107ad8fd4a8 100644
--- a/lisp/gnus/gnus-sum.el
+++ b/lisp/gnus/gnus-sum.el
@@ -6207,8 +6207,7 @@ If WHERE is `summary', the summary mode line format will be used."
       ;; Update the mode line.
       (setq mode-line-buffer-identification
             (gnus-mode-line-buffer-identification
-             (list (propertize mode-string
-                               'face 'mode-line-buffer-id))))
+             (list mode-string)))
       (set-buffer-modified-p t))))
 
 (defun gnus-create-xref-hashtb (from-newsgroup headers unreads)
diff --git a/lisp/gnus/gnus.el b/lisp/gnus/gnus.el
index 0afd873a5df..3a7edf9e080 100644
--- a/lisp/gnus/gnus.el
+++ b/lisp/gnus/gnus.el
@@ -310,12 +310,15 @@ be set in `.emacs' instead."
   :type 'boolean)
 
 (defun gnus-mode-line-buffer-identification (line)
-  (let ((str (car-safe line)))
+  (let* ((str (car-safe line))
+         (str (if (stringp str)
+                  (car (propertized-buffer-identification str))
+                str)))
     (if (or (not (fboundp 'find-image))
             (not (display-graphic-p))
             (not (stringp str))
             (not (string-match "^Gnus:" str)))
-        line
+        (list str)
       (let ((load-path (append (mm-image-load-path) load-path)))
         ;; Add the Gnus logo.
         (add-text-properties