In Ruby < 1.9, Symbol#downcase doesn't exist!

CHANGELOG.md

@@ -1,5 +1,9 @@
 ## Master
 
+### Bugs fixes:
+
+- In Ruby < 1.9, Symbol#downcase doesn't exist! ([@rymai](https://github.com/rymai))
+
 ### New features:
 
 - Pull request [#73](https://github.com/guard/guard/pull/73): Allow DSL's `group` method to accept a Symbol as group name. ([@johnbintz](https://github.com/johnbintz))

lib/guard.rb

@@ -81,14 +81,14 @@ module Guard
     end
 
     def get_guard_class(name)
-      try_to_load_gem name
+      try_to_load_gem(name)
       self.const_get(self.constants.find { |klass_name| klass_name.to_s.downcase == name.to_s.downcase.gsub('-', '') })
     rescue TypeError
       UI.error "Could not find load find gem 'guard-#{name}' or find class Guard::#{name}"
     end
 
     def try_to_load_gem(name)
-      require "guard/#{name.downcase}"
+      require "guard/#{name.to_s.downcase}"
     rescue LoadError
     end
 

spec/guard_spec.rb

@@ -89,6 +89,19 @@ describe Guard do
     end
   end
   
+  describe ".try_to_load_gem" do
+    class Guard::Classname
+    end
+    
+    it "reports an error if the class is not found" do
+      Guard.get_guard_class('classname').should be_true
+    end
+    
+    it "reports an error if the class is not found" do
+      Guard.get_guard_class(:classname).should be_true
+    end
+  end
+
   describe ".locate_guard" do
     it "returns the path of a Guard gem" do
       if Gem::Version.create(Gem::VERSION) >= Gem::Version.create('1.8.0')