Add formula for vip

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

Formula/vip.rb

@@ -0,0 +1,49 @@
+require 'formula'
+
+class VipMan <Formula
+  url 'http://www.cs.duke.edu/~des/scripts/vip.man'
+  md5 'e94b80d7e594c68e13813e371250e521'
+  version '19970805'
+end
+
+class Vip <Formula
+  url 'http://www.cs.duke.edu/~des/scripts/vip'
+  version '19971113'
+  homepage 'http://www.cs.duke.edu/~des/vip.html'
+  md5 '46b21408dcbaa4e58a862207bb70c42f'
+
+  # use awk and /var/tmp as temporary directory
+  def patches; DATA; end
+
+  def install
+    bin.install 'vip'
+    VipMan.new.brew { man1.install 'vip.man' => 'vip.1' }
+  end
+end
+
+
+__END__
+diff --git a/vip b/vip
+index f150167..e517675 100644
+--- a/vip
++++ b/vip
+@@ -66,7 +66,7 @@ Usage:  $PROG [ -no ] [ command ]
+ 			otherwise stdin is used;
+ "
+ 
+-: ${TMPDIR:="/usr/tmp"}		# where temp. files go
++: ${TMPDIR:="/var/tmp"}		# where temp. files go
+ TEMP_FILE="$TMPDIR/$PROG.$$"	# temp. file to hold data to edit
+ COMMAND="cat"			# default command to produce input
+ DFLT_ED="vi"			# default editor
+@@ -81,6 +81,10 @@ case "$SYS" in
+ 	;;
+   "HP-UX "*)
+ 	AWK=awk
++	;;
++  "Darwin "*)
++	AWK=awk
++	;;
+   esac
+ 
+ #