Add Regexp#to_proc.

HISTORY.md

@@ -6,13 +6,17 @@ Major release is now for Ruby 1.9.2+. Ruby 1.8 and older is no longer supported.
 If you still need to use Facets with Ruby 1.8 or older then the excellent
 Backports project can be used to fill in the gaps. 
 
+Special thanks to Seam Mackesey for contributing some new methods.
+
+
 Changes:
 
 * New Features
 
   * Add alias String#each_match for #mscan.
   * Add Dir.lookup method.
   * Add Proc.wrap (may become `Kernel#Proc()`).
+  * Add Regexp#to_proc.
 
 * Renamed Features
 

lib/core/facets/regexp/to_proc.rb

@@ -0,0 +1,13 @@
+class Regexp
+
+  # Useful to pass a Regexp as a block that will match elements
+  #
+  # %w[ joe_the_dog mary_the_cat ].index &/cat/  #=> 1
+  #
+  # Returns [Proc] which passes it's argument to Regexp#match method.
+
+  def to_proc
+    proc { |x| match(x) }
+  end
+
+end