make eshell-path-env buffer-local

["Jürgen Hötzel" <juergen@archlinux.org>]

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Hi,

this is required when running multiple Eshell buffers on different
Hosts: To prevent garbling the different PATHs.

Any objections against this commit?

Jürgen

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From 58f16a811c6f0ed9afa12fe7cedbfe76681bc169 Mon Sep 17 00:00:00 2001
From: Juergen Hoetzel <juergen@archlinux.org>
Date: Tue, 8 Jan 2013 13:29:48 +0100
Subject: [PATCH] set eshell-path-env buffer-local

---
 lisp/tramp.el | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/lisp/tramp.el b/lisp/tramp.el
index f8db03e..e333ad0 100644
--- a/lisp/tramp.el
+++ b/lisp/tramp.el
@@ -3896,14 +3896,14 @@ Only works for Bourne-like shells."
 ;; when `default-directory' points to another host.
 (defun tramp-eshell-directory-change ()
   "Set `eshell-path-env' to $PATH of the host related to `default-directory'."
-  (setq eshell-path-env
-	(if (file-remote-p default-directory)
-	    (with-parsed-tramp-file-name default-directory nil
-	      (mapconcat
-	       'identity
-	       (tramp-get-connection-property v "remote-path" nil)
-	       ":"))
-	  (getenv "PATH"))))
+  (set (make-local-variable 'eshell-path-env)
+       (if (file-remote-p default-directory)
+	   (with-parsed-tramp-file-name default-directory nil
+	     (mapconcat
+	      'identity
+	      (tramp-get-connection-property v "remote-path" nil)
+	      ":"))
+	 (getenv "PATH"))))
 
 (eval-after-load "esh-util"
   '(progn
-- 
1.8.1