Don't mess with INFOPATH in ns builds

It's not necessary, and would break if INFOPATH was already set (bug#2791).
Ref also
http://lists.gnu.org/archive/html/emacs-devel/2009-05/msg00035.html
http://lists.gnu.org/archive/html/emacs-devel/2005-06/msg00064.html

* lisp/paths.el (Info-default-directory-list):
* lisp/info.el (info-initialize): For self-contained NS builds, put the
included info/ directory at the front. 

* src/nsterm.m (ns_init_paths): Don't mess with INFOPATH.

3 files changed, 23 insertions, 2 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 48cc0ca22ae..918048ce62f 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,5 +1,9 @@
 2012-05-26  Glenn Morris  <rgm@gnu.org>
 
+        * paths.el (Info-default-directory-list):
+        * info.el (info-initialize): For self-contained NS builds, put the
+        included info/ directory at the front.  (Bug#2791)
+
         * paths.el (Info-default-directory-list): Make it a defcustom,
         mainly so that we can use custom-initialize-delay.
 
diff --git a/lisp/info.el b/lisp/info.el
index 367d9d0a9ef..93523c4c16f 100644
--- a/lisp/info.el
+++ b/lisp/info.el
@@ -618,7 +618,19 @@ in `Info-file-supports-index-cookies-list'."
                      (append (split-string (substring path 0 -1) sep)
                              (Info-default-dirs))
                    (split-string path sep))
-               (Info-default-dirs)))))))
+               (Info-default-dirs))))
+      ;; For a self-contained (ie relocatable) NS build, AFAICS we
+      ;; always want the included info directory to be at the head of
+      ;; the search path, unless it's already in INFOPATH somewhere.
+      ;; It's at the head of Info-default-directory-list,
+      ;; but there's no way to get it at the head of Info-directory-list
+      ;; except by doing it here.
+      (and path
+           (featurep 'ns)
+           (let ((dir (expand-file-name "../info" data-directory)))
+             (and (file-directory-p dir)
+                  (not (member dir (split-string path ":" t)))
+                  (push dir Info-directory-list)))))))
 
 ;;;###autoload
 (defun info-other-window (&optional file-or-node)
diff --git a/lisp/paths.el b/lisp/paths.el
index 4d7e3718be2..a0d5cc7775d 100644
--- a/lisp/paths.el
+++ b/lisp/paths.el
@@ -37,7 +37,12 @@
 ;; call custom-initialize-delay on it.
 (defcustom Info-default-directory-list
   (let* ((config-dir
-          (file-name-as-directory configure-info-directory))
+          (file-name-as-directory
+           ;; Self-contained NS build with info/ in the app-bundle.
+           (or (and (featurep 'ns)
+                    (let ((dir (expand-file-name "../info" data-directory)))
+                      (if (file-directory-p dir) dir)))
+               configure-info-directory)))
          (prefixes
           ;; Directory trees in which to look for info subdirectories
           (prune-directory-list '("/usr/local/" "/usr/" "/opt/" "/")))