From 2218bf72b07c1ea1d8ee848abab6e391eba183cb Mon Sep 17 00:00:00 2001
From: Kevin Olbrich <kevin.olbrich@gmail.com>
Date: Sat, 23 Apr 2011 11:29:35 -0400
Subject: [PATCH] update parser to directly perform the conversion to a complex
 for rubies that don't define it on string (like 1.8)

---
 lib/ruby_units/unit.rb | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/lib/ruby_units/unit.rb b/lib/ruby_units/unit.rb
index 1599a1db..ada3e1a6 100644
--- a/lib/ruby_units/unit.rb
+++ b/lib/ruby_units/unit.rb
@@ -1237,7 +1237,11 @@ def self.parse_into_numbers_and_units(string)
       when NilClass
         1
       when complex
-        num.to_c
+        if num.respond_to?(:to_c)
+          num.to_c
+        else
+          Complex(*num.scan(/(#{sci})(#{sci})i/).flatten.map {|n| n.to_i})
+        end
       when rational
         Rational(*num.split("/").map {|x| x.to_i})
       else