librep tar file handler patch

[Mark Diekhans <markd kermodei com>]

Hi Folks,

Librep doesn't correct parse the output of bsdtar in the tar
file handle.  Its a bit of work to fix the code to handle it and
easy to installed gnu tar.  However librep doesn't provide any
kind of error detection for this, making it a lot of work to
figure out what is going on.  Enclosed is a patch to a least
report the failure to parse tar's output.

Thanks
Mark

--- lisp/rep/io/file-handlers/tar.jl.ORG	2009-02-12 23:26:14.000000000 -0800
+++ lisp/rep/io/file-handlers/tar.jl	2009-02-16 23:09:46.000000000 -0800
@@ -204,7 +204,7 @@
       (setq tarfh-pending-output (substring string point)))))
 
 (defun tarfh-parse-list (string point)
-  (when (string-looking-at tarfh-list-regexp string point)
+  (if (string-looking-at tarfh-list-regexp string point)
     (let
 	((mode-string (substring string (match-start 1) (match-end 1)))
 	 (user (substring string (match-start 2) (match-end 2)))
@@ -220,7 +220,9 @@
       (setq file-name (expand-file-name name ""))
       (vector name file-name size modtime
 	      (cdr (assq (aref mode-string 0) tarfh-list-type-alist))
-	      nil mode-string user group symlink))))
+	      nil mode-string user group symlink))
+    (error "can't parse tar file listing line (GNU or Solaris tar required): %s" (substring string point))))
+    
 
 (defun tarfh-file-get-modtime (file-struct)
   (when (stringp (aref file-struct tarfh-file-modtime))