sort-columns fails on NetBSD

[Mark Davies]

The sort program on NetBSD objects if the field separator is set to 
the same value as the record separator.  (sort-columns) tries to set 
it that way so that the whole line is in the same field.  However the 
sort-columns code already makes sure there are no tabs in the region 
being worked on so we can have the same effect by setting the field 
separator to tab.

Patch is below.

cheers
mark


--- lisp/sort.el.orig   2006-04-04 13:21:26.000000000 +1200
+++ lisp/sort.el
@@ -506,7 +506,7 @@ Use \\[untabify] to convert tabs to spac
          ;; Do not use it if there are any non-font-lock properties
          ;; in the region, since the sort utility would lose the
          ;; properties.
-         (let ((sort-args (list (if reverse "-rt\n" "-t\n")
+         (let ((sort-args (list (if reverse "-rt\t" "-t\t")
                                 (format "-k1.%d,1.%d"
                                         (1+ col-start)
                                         (1+ col-end)))))