* net/tramp-cache.el (tramp-connection-properties): New customer option.

(tramp-get-connection-property): Use it.

* net/tramp-compat.el (top): Require 'trampver.

* net/tramp-sh.el (tramp-remote-process-environment): Set
tramp-autoload cookie.

4 files changed, 47 insertions, 3 deletions

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index 0718296dffd..dd738ca9430 100644
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,14 @@
+2013-02-16  Michael Albinus  <michael.albinus@gmx.de>
+
+        * net/tramp-cache.el (tramp-connection-properties): New customer
+        option.
+        (tramp-get-connection-property): Use it.
+
+        * net/tramp-compat.el (top): Require 'trampver.
+
+        * net/tramp-sh.el (tramp-remote-process-environment): Set
+        tramp-autoload cookie.
+
 2013-02-16  Kevin Ryde  <user42@zip.com.au>
 
         * info-look.el (info-lookup-select-mode): If major-mode has no
diff --git a/lisp/net/tramp-cache.el b/lisp/net/tramp-cache.el
index d1ef1739bf7..dc45a57b7c6 100644
--- a/lisp/net/tramp-cache.el
+++ b/lisp/net/tramp-cache.el
@@ -58,6 +58,19 @@
 (defvar tramp-cache-data (make-hash-table :test 'equal)
   "Hash table for remote files properties.")
 
+;;;###tramp-autoload
+(defcustom tramp-connection-properties nil
+  "List of static connection properties.
+Every entry has the form (REGEXP PROPERTY VALUE).  The regexp
+matches remote file names.  It can be nil.  PROPERTY is a string,
+and VALUE the corresponding value.  They are used, if there is no
+matching entry in for PROPERTY in `tramp-cache-data'."
+  :group 'tramp
+  :version "24.4"
+  :type '(repeat (list (choice :tag "File Name regexp" regexp (const nil))
+                       (choice :tag "        Property" string)
+                       (choice :tag "           Value" sexp))))
+
 (defcustom tramp-persistency-file-name
   (cond
    ;; GNU Emacs.
@@ -204,9 +217,27 @@ If the value is not set for the connection, returns DEFAULT."
     (setq key (copy-sequence key))
     (aset key 3 nil))
   (let* ((hash (gethash key tramp-cache-data))
-         (value (if (hash-table-p hash)
-                    (gethash property hash default)
-                  default)))
+         (value
+          (catch 'result
+            (or
+             ;; Check for dynamic properties.
+             (and
+              (hash-table-p hash)
+              (maphash
+               (lambda (x y) (when (equal x property) (throw 'result y)))
+               hash))
+             ;; Check for static properties.
+             (and
+              (vectorp key)
+              (dolist (elt tramp-connection-properties)
+                (when (and (string-match
+                            (or (nth 0 elt) "")
+                            (tramp-make-tramp-file-name
+                             (aref key 0) (aref key 1) (aref key 2) nil))
+                           (string-equal (or (nth 1 elt) "") (or property "")))
+                  (throw 'result (nth 2 elt)))))
+             ;; The default value.
+             default))))
     (tramp-message key 7 "%s %s" property value)
     value))
 
diff --git a/lisp/net/tramp-compat.el b/lisp/net/tramp-compat.el
index 12510bf7fab..81c4d5ccced 100644
--- a/lisp/net/tramp-compat.el
+++ b/lisp/net/tramp-compat.el
@@ -52,6 +52,7 @@
   (require 'format-spec)
   (require 'shell)
 
+  (require 'trampver)
   (require 'tramp-loaddefs)
 
   ;; As long as password.el is not part of (X)Emacs, it shouldn't be
diff --git a/lisp/net/tramp-sh.el b/lisp/net/tramp-sh.el
index 001a27f3b2e..9be22352b23 100644
--- a/lisp/net/tramp-sh.el
+++ b/lisp/net/tramp-sh.el
@@ -512,6 +512,7 @@ as given in your `~/.profile'."
                   (const :tag "Private Directories" tramp-own-remote-path)
                   (string :tag "Directory"))))
 
+;;;###tramp-autoload
 (defcustom tramp-remote-process-environment
   `("HISTFILE=$HOME/.tramp_history" "HISTSIZE=1" "LC_ALL=C"
     ,(format "TERM=%s" tramp-terminal-type)