[Emacs-diffs] Changes to emacs/lisp/help-mode.el

[Nick Roberts]

Index: emacs/lisp/help-mode.el
diff -u emacs/lisp/help-mode.el:1.41 emacs/lisp/help-mode.el:1.42
--- emacs/lisp/help-mode.el:1.41        Tue Dec 20 09:02:23 2005
+++ emacs/lisp/help-mode.el     Tue Dec 27 21:11:50 2005
@@ -648,6 +648,15 @@
                (fboundp sym) (facep sym))
        (help-do-xref pos #'help-xref-interned (list sym))))))
 
+(defun help-insert-string (string)
+  "Insert STRING to the help buffer and install xref info for it.
+This function can be used to restore the old contents of the help buffer
+when going back to the previous topic in the xref stack.  It is needed
+in case when it is impossible to recompute the old contents of the
+help buffer by other means."
+  (setq help-xref-stack-item (list #'help-insert-string string))
+  (with-output-to-temp-buffer (help-buffer)
+    (insert string)))
 
 (provide 'help-mode)