Prefix arguments in Mote.parse with underscore

The local variable in Mote.parse could potentially shadow
the methods defined in the passed context. While this
change does not prevent the shadowing, it makes it less
likely to occur.

Thanks to @srabuini for reporting this issue.

Author: soveran

lib/mote.rb

@@ -49,8 +49,8 @@ def self.src(template, vars = [])
     code << "__o; end"
   end
 
-  def self.parse(template, context = self, vars = [], name = "template")
-    context.instance_eval(src(template, vars), name, -1)
+  def self.parse(_template, _context = self, _vars = [], _name = "template")
+    _context.instance_eval(src(_template, _vars), _name, -1)
   end
 
   module Helpers

test/mote_test.rb

@@ -90,6 +90,14 @@ def context.user; "Bruno"; end
     example = Mote.parse("{{ user }}", context)
     assert_equal "Bruno", example.call
   end
+  
+  test "context with name" do
+    context = Object.new
+    def context.name; "Sebas"; end
+    
+    example = Mote.parse("{{ self.name }}", context)
+    assert_equal "Sebas", example.call
+  end
 
   test "locals" do
     example = Mote.parse("{{ user }}", TOPLEVEL_BINDING, [:user])