* lisp/info.el (Info-extract-menu-node-name): Check the second match

for empty string (second test-case of bug#9528).
(Info-last-preorder): Let-bind `Info-history' to nil to not add
intermediate nodes to the history (first test-case of bug#9528).

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index cdcd33877f9be49141d82495e533d83789b7ad4a..b820fc24d51366a81fe43d70bdc454dfdc99bcda 100644 (file)
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,10 @@
+2011-09-18  Juri Linkov  <juri@jurta.org>
+
+       * info.el (Info-extract-menu-node-name): Check the second match
+       for empty string (second test-case of bug#9528).
+       (Info-last-preorder): Let-bind `Info-history' to nil to not add
+       intermediate nodes to the history (first test-case of bug#9528).
+
 2011-09-18  Juri Linkov  <juri@jurta.org>
 
        * info.el (Info-mode-syntax-table): New variable.

diff --git a/lisp/info.el b/lisp/info.el
index eb45bb0bd2f04df52c7c06b823bcd0195327ece2..e79e4b1195e76fafb93fb808e97aa2f966424bec 100644 (file)
--- a/lisp/info.el
+++ b/lisp/info.el
@@ -2440,7 +2440,8 @@ Because of ambiguities, this should be concatenated with something like
       )
     (replace-regexp-in-string
      "[ \n]+" " "
-     (or (match-string-no-properties 2)
+     (or (and (not (equal (match-string-no-properties 2) ""))
+             (match-string-no-properties 2))
         ;; If the node name is the menu entry name (using `entry::').
         (buffer-substring-no-properties
          (match-beginning 0) (1- (match-beginning 1)))))))
@@ -2765,22 +2766,24 @@ N is the digit argument used to invoke this command."
          ;; so we can scroll back through it.
          (goto-char (point-max)))
         ;; Keep going down, as long as there are nested menu nodes.
-        (while (Info-no-error
-                (Info-last-menu-item)
-                ;; If we go down a menu item, go to the end of the node
-                ;; so we can scroll back through it.
-                (goto-char (point-max))))
+        (let (Info-history) ; Don't add intermediate nodes to the history.
+          (while (Info-no-error
+                  (Info-last-menu-item)
+                  ;; If we go down a menu item, go to the end of the node
+                  ;; so we can scroll back through it.
+                  (goto-char (point-max)))))
         (recenter -1))
        ((and (Info-no-error (Info-extract-pointer "prev"))
              (not (equal (Info-extract-pointer "up")
                          (Info-extract-pointer "prev"))))
         (Info-no-error (Info-prev))
         (goto-char (point-max))
-        (while (Info-no-error
-                (Info-last-menu-item)
-                ;; If we go down a menu item, go to the end of the node
-                ;; so we can scroll back through it.
-                (goto-char (point-max))))
+        (let (Info-history) ; Don't add intermediate nodes to the history.
+          (while (Info-no-error
+                  (Info-last-menu-item)
+                  ;; If we go down a menu item, go to the end of the node
+                  ;; so we can scroll back through it.
+                  (goto-char (point-max)))))
         (recenter -1))
        ((Info-no-error (Info-up t))
         (goto-char (point-min))