<?xml version="1.0" encoding="UTF-8"?>
<commit>
  <added type="array"/>
  <modified type="array">
    <modified>
      <diff>@@ -51,14 +51,14 @@ module Liquid
       else        
         
         expressions = markup.split(/\b(and|or)\b/).reverse
-        raise SyntaxHelp unless expressions.shift =~ Syntax 
+        raise(SyntaxError, SyntaxHelp) unless expressions.shift =~ Syntax 
 
         condition = Condition.new($1, $2, $3)               
         
         while not expressions.empty?
           operator = expressions.shift 
           
-          raise SyntaxHelp unless expressions.shift.to_s =~ Syntax    
+          raise(SyntaxError, SyntaxHelp) unless expressions.shift.to_s =~ Syntax    
           
           new_condition = Condition.new($1, $2, $3)
           new_condition.send(operator.to_sym, condition)     </diff>
      <filename>lib/liquid/tags/if.rb</filename>
    </modified>
    <modified>
      <diff>@@ -116,6 +116,10 @@ class IfElseTest &lt; Test::Unit::TestCase
     assert_raise(SyntaxError){ assert_template_result('', '{% if jerry == 1 %}')}
   end
   
+  def test_syntax_error_no_expression
+    assert_raise(SyntaxError) { assert_template_result('', '{% if %}') }
+  end
+  
   def test_if_with_custom_condition
     Condition.operators['contains'] = :[]
     </diff>
      <filename>test/if_else_test.rb</filename>
    </modified>
  </modified>
  <removed type="array"/>
  <parents type="array">
    <parent>
      <id>ed75a6d948a12fae73430e3df59d226263f5bf6b</id>
    </parent>
  </parents>
  <author>
    <name>Nathaniel Bibler</name>
    <email>git@nathanielbibler.com</email>
  </author>
  <url>http://github.com/tobi/liquid/commit/4c30922d8ec5e40f10adb6911487e90694cab53b</url>
  <id>4c30922d8ec5e40f10adb6911487e90694cab53b</id>
  <committed-date>2008-05-21T20:58:12-07:00</committed-date>
  <authored-date>2008-05-21T20:58:12-07:00</authored-date>
  <message>The if tag now raises Liquid::SyntaxError rather than a generic RuntimeError for syntax problems.</message>
  <tree>2301d6231d94fd0f6db0b67104cd78520aa751b4</tree>
  <committer>
    <name>Nathaniel Bibler</name>
    <email>git@nathanielbibler.com</email>
  </committer>
</commit>
