minor fixes to .ignore and docs

files/empty/.ignore

@@ -1 +0,0 @@
-A placeholder to nail this directory into git

manifests/defines/modules_dir.pp

@@ -19,7 +19,7 @@ define modules_dir (
 				source => [ "puppet:///${name}/modules_dir", "puppet:///common/empty"],
 				checksum => mtime,
 				# ignore the placeholder
-				ignore => '.ignore', 
+				ignore => '\.ignore', 
 				recurse => true, purge => true, force => true,
 				mode => $mode, owner => $owner, group => $group;
 		}

plugins/puppet/parser/functions/gsub.rb

@@ -1,5 +1,9 @@
-# generic gsub call
 module Puppet::Parser::Functions
+	# thin wrapper around the ruby gsub function
+	# gsub($string, $pattern, $replacement) will replace all occurrences of
+	# $pattern in $string with $replacement. $string can be either a singel
+	# value or an array. In the latter case, each element of the array will
+	# be processed in turn.
 	newfunction(:gsub, :type => :rvalue) do |args|
 		if args[0].is_a?(Array)
 			args[0].collect do |val|