Update HISTORY.md for v2.4.0 release

I had accidentally read slice_collection_using_each as using to as an
inclusive limit rather than exclusive, and no tests covered the offset or
limit parameters.

.travis.yml

@@ -1,10 +1,11 @@
 rvm:
   - 1.8.7
-  - 1.9.2
+  - 1.9.3
   - ree
-  - jruby
-  - rbx
-  - rbx-2.0
+  - jruby-18mode
+  - jruby-19mode
+  - rbx-18mode
+  - rbx-19mode
 
 script: "rake test"
 

History.md

@@ -1,6 +1,17 @@
 # Liquid Version History
 
-## 2.3.0
+## 2.4.0 / 2012-08-03
+
+* Performance improvements
+* Allow filters in `assign`
+* Add `modulo` filter
+* Ruby 1.8, 1.9, and Rubinius compatibility fixes
+* Add support for `quoted['references']` in `tablerow`
+* Add support for Enumerable to `tablerow`
+* `strip\_html` filter removes html comments
+
+
+## 2.3.0 / 2011-10-16
 
 * Several speed/memory improvements
 * Numerous bug fixes

README.md

@@ -6,15 +6,15 @@ Liquid is a template engine which was written with very specific requirements:
 
 * It has to have beautiful and simple markup. Template engines which don't produce good looking markup are no fun to use.
 * It needs to be non evaling and secure. Liquid templates are made so that users can edit them. You don't want to run code on your server which your users wrote.
-* It has to be stateless. Compile and render steps have to be seperate so that the expensive parsing and compiling can be done once and later on you can just render it passing in a hash with local variables and objects.
+* It has to be stateless. Compile and render steps have to be separate so that the expensive parsing and compiling can be done once and later on you can just render it passing in a hash with local variables and objects.
 
 ## Why you should use Liquid
 
 * You want to allow your users to edit the appearance of your application but don't want them to run **insecure code on your server**.
-* You want to render templates directly from the database
-* You like smarty (PHP) style template engines
-* You need a template engine which does HTML just as well as emails
-* You don't like the markup of your current templating engine
+* You want to render templates directly from the database.
+* You like smarty (PHP) style template engines.
+* You need a template engine which does HTML just as well as emails.
+* You don't like the markup of your current templating engine.
 
 ## What does it look like?
 
@@ -31,7 +31,7 @@ Liquid is a template engine which was written with very specific requirements:
 </ul>
 ```
 
-## Howto use Liquid
+## How to use Liquid
 
 Liquid supports a very simple API based around the Liquid::Template class.
 For standard use you can just pass it the content of a file and call render with a parameters hash.

lib/liquid.rb

@@ -32,17 +32,17 @@ module Liquid
   VariableEnd                 = /\}\}/
   VariableIncompleteEnd       = /\}\}?/
   QuotedString                = /"[^"]*"|'[^']*'/
-  QuotedFragment              = /#{QuotedString}|(?:[^\s,\|'"]|#{QuotedString})+/
+  QuotedFragment              = /#{QuotedString}|(?:[^\s,\|'"]|#{QuotedString})+/o
   StrictQuotedFragment        = /"[^"]+"|'[^']+'|[^\s|:,]+/
-  FirstFilterArgument         = /#{FilterArgumentSeparator}(?:#{StrictQuotedFragment})/
-  OtherFilterArgument         = /#{ArgumentSeparator}(?:#{StrictQuotedFragment})/
-  SpacelessFilter             = /^(?:'[^']+'|"[^"]+"|[^'"])*#{FilterSeparator}(?:#{StrictQuotedFragment})(?:#{FirstFilterArgument}(?:#{OtherFilterArgument})*)?/
-  Expression                  = /(?:#{QuotedFragment}(?:#{SpacelessFilter})*)/
-  TagAttributes               = /(\w+)\s*\:\s*(#{QuotedFragment})/
+  FirstFilterArgument         = /#{FilterArgumentSeparator}(?:#{StrictQuotedFragment})/o
+  OtherFilterArgument         = /#{ArgumentSeparator}(?:#{StrictQuotedFragment})/o
+  SpacelessFilter             = /^(?:'[^']+'|"[^"]+"|[^'"])*#{FilterSeparator}(?:#{StrictQuotedFragment})(?:#{FirstFilterArgument}(?:#{OtherFilterArgument})*)?/o
+  Expression                  = /(?:#{QuotedFragment}(?:#{SpacelessFilter})*)/o
+  TagAttributes               = /(\w+)\s*\:\s*(#{QuotedFragment})/o
   AnyStartingTag              = /\{\{|\{\%/
-  PartialTemplateParser       = /#{TagStart}.*?#{TagEnd}|#{VariableStart}.*?#{VariableIncompleteEnd}/
-  TemplateParser              = /(#{PartialTemplateParser}|#{AnyStartingTag})/
-  VariableParser              = /\[[^\]]+\]|#{VariableSegment}+\??/
+  PartialTemplateParser       = /#{TagStart}.*?#{TagEnd}|#{VariableStart}.*?#{VariableIncompleteEnd}/o
+  TemplateParser              = /(#{PartialTemplateParser}|#{AnyStartingTag})/o
+  VariableParser              = /\[[^\]]+\]|#{VariableSegment}+\??/o
 end
 
 require 'liquid/drop'
@@ -60,6 +60,7 @@ require 'liquid/htmltags'
 require 'liquid/standardfilters'
 require 'liquid/condition'
 require 'liquid/module_ex'
+require 'liquid/utils'
 
 # Load all the tags of the standard library
 #

lib/liquid/block.rb

@@ -1,10 +1,10 @@
 module Liquid
 
   class Block < Tag
-    IsTag             = /^#{TagStart}/
-    IsVariable        = /^#{VariableStart}/
-    FullToken         = /^#{TagStart}\s*(\w+)\s*(.*)?#{TagEnd}$/
-    ContentOfVariable = /^#{VariableStart}(.*)#{VariableEnd}$/
+    IsTag             = /^#{TagStart}/o
+    IsVariable        = /^#{VariableStart}/o
+    FullToken         = /^#{TagStart}\s*(\w+)\s*(.*)?#{TagEnd}$/o
+    ContentOfVariable = /^#{VariableStart}(.*)#{VariableEnd}$/o
 
     def parse(tokens)
       @nodelist ||= []

lib/liquid/context.rb

@@ -136,11 +136,11 @@ module Liquid
             $1
           when /^"(.*)"$/ # Double quoted strings
             $1
-          when /^(\d+)$/ # Integer and floats
+          when /^(-?\d+)$/ # Integer and floats
             $1.to_i
           when /^\((\S+)\.\.(\S+)\)$/ # Ranges
             (resolve($1).to_i..resolve($2).to_i)
-          when /^(\d[\d\.]+)$/ # Floats
+          when /^(-?\d[\d\.]+)$/ # Floats
             $1.to_f
           else
             variable(key)

lib/liquid/drop.rb

@@ -1,10 +1,10 @@
 module Liquid
 
-  # A drop in liquid is a class which allows you to to export DOM like things to liquid.
+  # A drop in liquid is a class which allows you to export DOM like things to liquid.
   # Methods of drops are callable.
-  # The main use for liquid drops is the implement lazy loaded objects.
+  # The main use for liquid drops is to implement lazy loaded objects.
   # If you would like to make data available to the web designers which you don't want loaded unless needed then
-  # a drop is a great way to do that
+  # a drop is a great way to do that.
   #
   # Example:
   #
@@ -18,7 +18,7 @@ module Liquid
   #   tmpl.render('product' => ProductDrop.new ) # will invoke top_sales query.
   #
   # Your drop can either implement the methods sans any parameters or implement the before_method(name) method which is a
-  # catch all
+  # catch all.
   class Drop
     attr_writer :context
 

lib/liquid/htmltags.rb

@@ -1,6 +1,6 @@
 module Liquid
   class TableRow < Block
-    Syntax = /(\w+)\s+in\s+(#{VariableSignature}+)/
+    Syntax = /(\w+)\s+in\s+(#{QuotedFragment}+)/o
 
     def initialize(tag_name, markup, tokens)
       if markup =~ Syntax
@@ -20,11 +20,10 @@ module Liquid
     def render(context)
       collection = context[@collection_name] or return ''
 
-      if @attributes['limit'] or @attributes['offset']
-        limit = context[@attributes['limit']] || -1
-        offset = context[@attributes['offset']] || 0
-        collection = collection[offset.to_i..(limit.to_i + offset.to_i - 1)]
-      end
+      from = @attributes['offset'] ? context[@attributes['offset']].to_i : 0
+      to = @attributes['limit'] ? from + context[@attributes['limit']].to_i : nil
+
+      collection = Utils.slice_collection_using_each(collection, from, to)
 
       length = collection.length
 
@@ -46,7 +45,7 @@ module Liquid
             'col0'    => col,
             'index0'  => index,
             'rindex'  => length - index,
-            'rindex0' => length - index -1,
+            'rindex0' => length - index - 1,
             'first'   => (index == 0),
             'last'    => (index == length - 1),
             'col_first' => (col == 0),

lib/liquid/standardfilters.rb

@@ -54,12 +54,16 @@ module Liquid
     end
 
     # Split input string into an array of substrings separated by given pattern.
+    #
+    # Example:
+    #   <div class="summary">{{ post | split '//' | first }}</div>
+    #
     def split(input, pattern)
       input.split(pattern)
     end
 
     def strip_html(input)
-      input.to_s.gsub(/<script.*?<\/script>/, '').gsub(/<.*?>/, '')
+      input.to_s.gsub(/<script.*?<\/script>/, '').gsub(/<!--.*?-->/, '').gsub(/<.*?>/, '')
     end
 
     # Remove all newlines from the string
@@ -218,6 +222,10 @@ module Liquid
       to_number(input) / to_number(operand)
     end
 
+    def modulo(input, operand)
+      to_number(input) % to_number(operand)
+    end
+
     private
 
       def to_number(obj)

lib/liquid/tags/assign.rb

@@ -9,12 +9,12 @@ module Liquid
   #  {{ foo }}
   #
   class Assign < Tag
-    Syntax = /(#{VariableSignature}+)\s*=\s*(#{QuotedFragment}+)/   
+    Syntax = /(#{VariableSignature}+)\s*=\s*(.*)\s*/o
   
     def initialize(tag_name, markup, tokens)          
       if markup =~ Syntax
         @to = $1
-        @from = $2
+        @from = Variable.new($2)
       else
         raise SyntaxError.new("Syntax Error in 'assign' - Valid syntax: assign [var] = [source]")
       end
@@ -23,7 +23,7 @@ module Liquid
     end
   
     def render(context)
-       context.scopes.last[@to] = context[@from]
+       context.scopes.last[@to] = @from.render(context)
        ''
     end 
   

lib/liquid/tags/case.rb

@@ -1,7 +1,7 @@
 module Liquid
   class Case < Block
-    Syntax     = /(#{QuotedFragment})/
-    WhenSyntax = /(#{QuotedFragment})(?:(?:\s+or\s+|\s*\,\s*)(#{QuotedFragment}.*))?/
+    Syntax     = /(#{QuotedFragment})/o
+    WhenSyntax = /(#{QuotedFragment})(?:(?:\s+or\s+|\s*\,\s*)(#{QuotedFragment}.*))?/o
 
     def initialize(tag_name, markup, tokens)      
       @blocks = []

lib/liquid/tags/cycle.rb

@@ -13,8 +13,8 @@ module Liquid
   #    <div class="green"> Item five</div>
   #
   class Cycle < Tag
-    SimpleSyntax = /^#{QuotedFragment}+/        
-    NamedSyntax  = /^(#{QuotedFragment})\s*\:\s*(.*)/
+    SimpleSyntax = /^#{QuotedFragment}+/o
+    NamedSyntax  = /^(#{QuotedFragment})\s*\:\s*(.*)/o
   
     def initialize(tag_name, markup, tokens)      
       case markup
@@ -48,7 +48,7 @@ module Liquid
   
     def variables_from_string(markup)
       markup.split(',').collect do |var|
-    	  var =~ /\s*(#{QuotedFragment})\s*/
+    	  var =~ /\s*(#{QuotedFragment})\s*/o
     	  $1 ? $1 : nil
     	end.compact
     end
@@ -56,4 +56,4 @@ module Liquid
   end
   
   Template.register_tag('cycle', Cycle)
-end
+end

lib/liquid/tags/for.rb

@@ -44,7 +44,7 @@ module Liquid
   # forloop.last:: Returns true if the item is the last item.
   #
   class For < Block                                             
-    Syntax = /(\w+)\s+in\s+(#{QuotedFragment}+)\s*(reversed)?/   
+    Syntax = /(\w+)\s+in\s+(#{QuotedFragment}+)\s*(reversed)?/o
   
     def initialize(tag_name, markup, tokens)
       if markup =~ Syntax
@@ -75,7 +75,8 @@ module Liquid
       collection = context[@collection_name]
       collection = collection.to_a if collection.is_a?(Range)
     
-      return render_else(context) unless collection.respond_to?(:each) 
+      # Maintains Ruby 1.8.7 String#each behaviour on 1.9
+      return render_else(context) unless iterable?(collection)
                                                  
       from = if @attributes['offset'] == 'continue'
         context.registers[:for][@name].to_i
@@ -85,10 +86,10 @@ module Liquid
         
       limit = context[@attributes['limit']]
       to    = limit ? limit.to_i + from : nil  
-          
-                       
-      segment = slice_collection_using_each(collection, from, to)      
-      
+
+
+      segment = Utils.slice_collection_using_each(collection, from, to)
+
       return render_else(context) if segment.empty?
       
       segment.reverse! if @reversed
@@ -109,7 +110,7 @@ module Liquid
             'index'   => index + 1, 
             'index0'  => index, 
             'rindex'  => length - index,
-            'rindex0' => length - index -1,
+            'rindex0' => length - index - 1,
             'first'   => (index == 0),
             'last'    => (index == length - 1) }
 
@@ -118,26 +119,6 @@ module Liquid
       end
       result     
     end          
-        
-    def slice_collection_using_each(collection, from, to)       
-      segments = []      
-      index = 0      
-      yielded = 0
-      collection.each do |item|         
-                
-        if to && to <= index
-          break
-        end
-        
-        if from <= index                               
-          segments << item
-        end                    
-                
-        index += 1
-      end    
-
-      segments
-    end
 
     private
 
@@ -145,6 +126,9 @@ module Liquid
         return @else_block ? [render_all(@else_block, context)] : ''
       end
 
+      def iterable?(collection)
+        collection.respond_to?(:each) || Utils.non_blank_string?(collection)
+      end
   end
 
   Template.register_tag('for', For)

lib/liquid/tags/if.rb

@@ -13,8 +13,8 @@ module Liquid
   #
   class If < Block
     SyntaxHelp = "Syntax Error in tag 'if' - Valid syntax: if [expression]"
-    Syntax = /(#{QuotedFragment})\s*([=!<>a-z_]+)?\s*(#{QuotedFragment})?/
-    ExpressionsAndOperators = /(?:\b(?:\s?and\s?|\s?or\s?)\b|(?:\s*(?!\b(?:\s?and\s?|\s?or\s?)\b)(?:#{QuotedFragment}|\S+)\s*)+)/
+    Syntax = /(#{QuotedFragment})\s*([=!<>a-z_]+)?\s*(#{QuotedFragment})?/o
+    ExpressionsAndOperators = /(?:\b(?:\s?and\s?|\s?or\s?)\b|(?:\s*(?!\b(?:\s?and\s?|\s?or\s?)\b)(?:#{QuotedFragment}|\S+)\s*)+)/o
 
     def initialize(tag_name, markup, tokens)
       @blocks = []

lib/liquid/tags/include.rb

@@ -1,6 +1,6 @@
 module Liquid
   class Include < Tag
-    Syntax = /(#{QuotedFragment}+)(\s+(?:with|for)\s+(#{QuotedFragment}+))?/
+    Syntax = /(#{QuotedFragment}+)(\s+(?:with|for)\s+(#{QuotedFragment}+))?/o
   
     def initialize(tag_name, markup, tokens)      
       if markup =~ Syntax
@@ -62,4 +62,4 @@ module Liquid
   end
 
   Template.register_tag('include', Include)  
-end
+end

lib/liquid/utils.rb

@@ -0,0 +1,31 @@
+module Liquid
+  module Utils
+    def self.slice_collection_using_each(collection, from, to)
+      segments = []
+      index = 0
+      yielded = 0
+
+      # Maintains Ruby 1.8.7 String#each behaviour on 1.9
+      return [collection] if non_blank_string?(collection)
+
+      collection.each do |item|
+
+        if to && to <= index
+          break
+        end
+
+        if from <= index
+          segments << item
+        end
+
+        index += 1
+      end
+
+      segments
+    end
+
+    def self.non_blank_string?(collection)
+      collection.is_a?(String) && collection != ''
+    end
+  end
+end

lib/liquid/variable.rb

@@ -11,21 +11,21 @@ module Liquid
   #   {{ user | link }}
   #
   class Variable
-    FilterParser = /(?:#{FilterSeparator}|(?:\s*(?!(?:#{FilterSeparator}))(?:#{QuotedFragment}|\S+)\s*)+)/
+    FilterParser = /(?:#{FilterSeparator}|(?:\s*(?!(?:#{FilterSeparator}))(?:#{QuotedFragment}|\S+)\s*)+)/o
     attr_accessor :filters, :name
 
     def initialize(markup)
       @markup  = markup
       @name    = nil
       @filters = []
-      if match = markup.match(/\s*(#{QuotedFragment})(.*)/)
+      if match = markup.match(/\s*(#{QuotedFragment})(.*)/o)
         @name = match[1]
-        if match[2].match(/#{FilterSeparator}\s*(.*)/)
+        if match[2].match(/#{FilterSeparator}\s*(.*)/o)
           filters = Regexp.last_match(1).scan(FilterParser)
           filters.each do |f|
             if matches = f.match(/\s*(\w+)/)
               filtername = matches[1]
-              filterargs = f.scan(/(?:#{FilterArgumentSeparator}|#{ArgumentSeparator})\s*(#{QuotedFragment})/).flatten
+              filterargs = f.scan(/(?:#{FilterArgumentSeparator}|#{ArgumentSeparator})\s*(#{QuotedFragment})/o).flatten
               @filters << [filtername.to_sym, filterargs]
             end
           end

liquid.gemspec

@@ -2,7 +2,7 @@
 
 Gem::Specification.new do |s|
   s.name        = "liquid"
-  s.version     = "2.3.0"
+  s.version     = "2.4.0"
   s.platform    = Gem::Platform::RUBY
   s.summary     = "A secure, non-evaling end user template engine with aesthetic markup."
   s.authors     = ["Tobias Luetke"]

test/liquid/assign_test.rb

@@ -12,4 +12,10 @@ class AssignTest < Test::Unit::TestCase
                            '{% assign foo = values %}.{{ foo[1] }}.',
                            'values' => %w{foo bar baz})
   end
+  
+  def test_assign_with_filter
+    assert_template_result('.bar.',
+                           '{% assign foo = values | split: "," %}.{{ foo[1] }}.',
+                           'values' => "foo,bar,baz")
+  end
 end # AssignTest

test/liquid/condition_test.rb

@@ -18,6 +18,11 @@ class ConditionTest < Test::Unit::TestCase
     assert_evalutes_true '2', '>=', '1'
     assert_evalutes_true '1', '<=', '2'
     assert_evalutes_true '1', '<=', '1'
+    # negative numbers
+    assert_evalutes_true '1', '>', '-1'
+    assert_evalutes_true '-1', '<', '1'
+    assert_evalutes_true '1.0', '>', '-1.0'
+    assert_evalutes_true '-1.0', '<', '1.0'
   end
 
   def test_default_operators_evalute_false

test/liquid/filter_test.rb

@@ -75,6 +75,12 @@ class FiltersTest < Test::Unit::TestCase
     assert_equal "bla blub", Variable.new("var | strip_html").render(@context)
   end
 
+  def test_strip_html_ignore_comments_with_html
+    @context['var'] = "<!-- split and some <ul> tag --><b>bla blub</a>"
+
+    assert_equal "bla blub", Variable.new("var | strip_html").render(@context)
+  end
+
   def test_capitalize
     @context['var'] = "blub"
 

test/liquid/standard_filter_test.rb

@@ -173,6 +173,10 @@ class StandardFiltersTest < Test::Unit::TestCase
     assert_template_result "Liquid error: divided by 0", "{{ 5 | divided_by:0 }}"
   end
 
+  def test_modulo
+    assert_template_result "1", "{{ 3 | modulo:2 }}"
+  end
+
   def test_append
     assigns = {'a' => 'bc', 'b' => 'd' }
     assert_template_result('bcd',"{{ a | append: 'd'}}",assigns)

test/liquid/tags/for_tag_test.rb

@@ -0,0 +1,202 @@
+require 'test_helper'
+
+class ForTagTest < Test::Unit::TestCase
+  include Liquid
+
+  def test_for
+    assert_template_result(' yo  yo  yo  yo ','{%for item in array%} yo {%endfor%}','array' => [1,2,3,4])
+    assert_template_result('yoyo','{%for item in array%}yo{%endfor%}','array' => [1,2])
+    assert_template_result(' yo ','{%for item in array%} yo {%endfor%}','array' => [1])
+    assert_template_result('','{%for item in array%}{%endfor%}','array' => [1,2])
+    expected = <<HERE
+
+  yo
+
+  yo
+
+  yo
+
+HERE
+    template = <<HERE
+{%for item in array%}
+  yo
+{%endfor%}
+HERE
+    assert_template_result(expected,template,'array' => [1,2,3])
+  end
+
+  def test_for_reversed
+    assigns = {'array' => [ 1, 2, 3] }
+    assert_template_result('321','{%for item in array reversed %}{{item}}{%endfor%}',assigns)
+  end
+
+  def test_for_with_range
+    assert_template_result(' 1  2  3 ','{%for item in (1..3) %} {{item}} {%endfor%}')
+  end
+
+  def test_for_with_variable
+    assert_template_result(' 1  2  3 ','{%for item in array%} {{item}} {%endfor%}','array' => [1,2,3])
+    assert_template_result('123','{%for item in array%}{{item}}{%endfor%}','array' => [1,2,3])
+    assert_template_result('123','{% for item in array %}{{item}}{% endfor %}','array' => [1,2,3])
+    assert_template_result('abcd','{%for item in array%}{{item}}{%endfor%}','array' => ['a','b','c','d'])
+    assert_template_result('a b c','{%for item in array%}{{item}}{%endfor%}','array' => ['a',' ','b',' ','c'])
+    assert_template_result('abc','{%for item in array%}{{item}}{%endfor%}','array' => ['a','','b','','c'])
+  end
+
+  def test_for_helpers
+    assigns = {'array' => [1,2,3] }
+    assert_template_result(' 1/3  2/3  3/3 ',
+                           '{%for item in array%} {{forloop.index}}/{{forloop.length}} {%endfor%}',
+                           assigns)
+    assert_template_result(' 1  2  3 ', '{%for item in array%} {{forloop.index}} {%endfor%}', assigns)
+    assert_template_result(' 0  1  2 ', '{%for item in array%} {{forloop.index0}} {%endfor%}', assigns)
+    assert_template_result(' 2  1  0 ', '{%for item in array%} {{forloop.rindex0}} {%endfor%}', assigns)
+    assert_template_result(' 3  2  1 ', '{%for item in array%} {{forloop.rindex}} {%endfor%}', assigns)
+    assert_template_result(' true  false  false ', '{%for item in array%} {{forloop.first}} {%endfor%}', assigns)
+    assert_template_result(' false  false  true ', '{%for item in array%} {{forloop.last}} {%endfor%}', assigns)
+  end
+
+  def test_for_and_if
+    assigns = {'array' => [1,2,3] }
+    assert_template_result('+--',
+                           '{%for item in array%}{% if forloop.first %}+{% else %}-{% endif %}{%endfor%}',
+                           assigns)
+  end
+
+  def test_for_else
+    assert_template_result('+++', '{%for item in array%}+{%else%}-{%endfor%}', 'array'=>[1,2,3])
+    assert_template_result('-',   '{%for item in array%}+{%else%}-{%endfor%}', 'array'=>[])
+    assert_template_result('-',   '{%for item in array%}+{%else%}-{%endfor%}', 'array'=>nil)
+  end
+
+  def test_limiting
+    assigns = {'array' => [1,2,3,4,5,6,7,8,9,0]}
+    assert_template_result('12', '{%for i in array limit:2 %}{{ i }}{%endfor%}', assigns)
+    assert_template_result('1234', '{%for i in array limit:4 %}{{ i }}{%endfor%}', assigns)
+    assert_template_result('3456', '{%for i in array limit:4 offset:2 %}{{ i }}{%endfor%}', assigns)
+    assert_template_result('3456', '{%for i in array limit: 4 offset: 2 %}{{ i }}{%endfor%}', assigns)
+  end
+
+  def test_dynamic_variable_limiting
+    assigns = {'array' => [1,2,3,4,5,6,7,8,9,0]}
+    assigns['limit'] = 2
+    assigns['offset'] = 2
+
+    assert_template_result('34', '{%for i in array limit: limit offset: offset %}{{ i }}{%endfor%}', assigns)
+  end
+
+  def test_nested_for
+    assigns = {'array' => [[1,2],[3,4],[5,6]] }
+    assert_template_result('123456', '{%for item in array%}{%for i in item%}{{ i }}{%endfor%}{%endfor%}', assigns)
+  end
+
+  def test_offset_only
+    assigns = {'array' => [1,2,3,4,5,6,7,8,9,0]}
+    assert_template_result('890', '{%for i in array offset:7 %}{{ i }}{%endfor%}', assigns)
+  end
+
+  def test_pause_resume
+    assigns = {'array' => {'items' => [1,2,3,4,5,6,7,8,9,0]}}
+    markup = <<-MKUP
+      {%for i in array.items limit: 3 %}{{i}}{%endfor%}
+      next
+      {%for i in array.items offset:continue limit: 3 %}{{i}}{%endfor%}
+      next
+      {%for i in array.items offset:continue limit: 3 %}{{i}}{%endfor%}
+      MKUP
+    expected = <<-XPCTD
+      123
+      next
+      456
+      next
+      789
+      XPCTD
+    assert_template_result(expected,markup,assigns)
+  end
+
+  def test_pause_resume_limit
+    assigns = {'array' => {'items' => [1,2,3,4,5,6,7,8,9,0]}}
+    markup = <<-MKUP
+      {%for i in array.items limit:3 %}{{i}}{%endfor%}
+      next
+      {%for i in array.items offset:continue limit:3 %}{{i}}{%endfor%}
+      next
+      {%for i in array.items offset:continue limit:1 %}{{i}}{%endfor%}
+      MKUP
+    expected = <<-XPCTD
+      123
+      next
+      456
+      next
+      7
+      XPCTD
+    assert_template_result(expected,markup,assigns)
+  end
+
+  def test_pause_resume_BIG_limit
+    assigns = {'array' => {'items' => [1,2,3,4,5,6,7,8,9,0]}}
+    markup = <<-MKUP
+      {%for i in array.items limit:3 %}{{i}}{%endfor%}
+      next
+      {%for i in array.items offset:continue limit:3 %}{{i}}{%endfor%}
+      next
+      {%for i in array.items offset:continue limit:1000 %}{{i}}{%endfor%}
+      MKUP
+    expected = <<-XPCTD
+      123
+      next
+      456
+      next
+      7890
+      XPCTD
+      assert_template_result(expected,markup,assigns)
+  end
+
+
+  def test_pause_resume_BIG_offset
+    assigns = {'array' => {'items' => [1,2,3,4,5,6,7,8,9,0]}}
+    markup = %q({%for i in array.items limit:3 %}{{i}}{%endfor%}
+      next
+      {%for i in array.items offset:continue limit:3 %}{{i}}{%endfor%}
+      next
+      {%for i in array.items offset:continue limit:3 offset:1000 %}{{i}}{%endfor%})
+    expected = %q(123
+      next
+      456
+      next
+      )
+      assert_template_result(expected,markup,assigns)
+  end
+
+
+  def test_for_tag_string
+    # ruby 1.8.7 "String".each => Enumerator with single "String" element.
+    # ruby 1.9.3 no longer supports .each on String though we mimic 
+    # the functionality for backwards compatibility
+
+    assert_template_result('test string', 
+                '{%for val in string%}{{val}}{%endfor%}', 
+                'string' => "test string")
+
+    assert_template_result('test string', 
+                '{%for val in string limit:1%}{{val}}{%endfor%}', 
+                'string' => "test string")
+
+    assert_template_result('val-string-1-1-0-1-0-true-true-test string', 
+                '{%for val in string%}' + 
+                '{{forloop.name}}-' + 
+                '{{forloop.index}}-' + 
+                '{{forloop.length}}-' + 
+                '{{forloop.index0}}-' + 
+                '{{forloop.rindex}}-' + 
+                '{{forloop.rindex0}}-' + 
+                '{{forloop.first}}-' + 
+                '{{forloop.last}}-' + 
+                '{{val}}{%endfor%}', 
+                'string' => "test string")
+  end
+
+  def test_blank_string_not_iterable
+    assert_template_result('', "{% for char in characters %}I WILL NOT BE OUTPUT{% endfor %}", 'characters' => '')
+  end
+end

test/liquid/tags/html_tag_test.rb

@@ -3,6 +3,18 @@ require 'test_helper'
 class HtmlTagTest < Test::Unit::TestCase
   include Liquid
 
+  class ArrayDrop < Liquid::Drop
+    include Enumerable
+
+    def initialize(array)
+      @array = array
+    end
+
+    def each(&block)
+      @array.each(&block)
+    end
+  end
+
   def test_html_table
 
     assert_template_result("<tr class=\"row1\">\n<td class=\"col1\"> 1 </td><td class=\"col2\"> 2 </td><td class=\"col3\"> 3 </td></tr>\n<tr class=\"row2\"><td class=\"col1\"> 4 </td><td class=\"col2\"> 5 </td><td class=\"col3\"> 6 </td></tr>\n",
@@ -26,4 +38,26 @@ class HtmlTagTest < Test::Unit::TestCase
                            '{% tablerow n in numbers cols:2%}{{tablerowloop.col}}{% endtablerow %}',
                            'numbers' => [1,2,3,4,5,6])
   end
+
+  def test_quoted_fragment
+    assert_template_result("<tr class=\"row1\">\n<td class=\"col1\"> 1 </td><td class=\"col2\"> 2 </td><td class=\"col3\"> 3 </td></tr>\n<tr class=\"row2\"><td class=\"col1\"> 4 </td><td class=\"col2\"> 5 </td><td class=\"col3\"> 6 </td></tr>\n",
+                           "{% tablerow n in collections.frontpage cols:3%} {{n}} {% endtablerow %}",
+                           'collections' => {'frontpage' => [1,2,3,4,5,6]})    
+    assert_template_result("<tr class=\"row1\">\n<td class=\"col1\"> 1 </td><td class=\"col2\"> 2 </td><td class=\"col3\"> 3 </td></tr>\n<tr class=\"row2\"><td class=\"col1\"> 4 </td><td class=\"col2\"> 5 </td><td class=\"col3\"> 6 </td></tr>\n",
+                           "{% tablerow n in collections['frontpage'] cols:3%} {{n}} {% endtablerow %}",
+                           'collections' => {'frontpage' => [1,2,3,4,5,6]})
+    
+  end
+
+  def test_enumerable_drop
+    assert_template_result("<tr class=\"row1\">\n<td class=\"col1\"> 1 </td><td class=\"col2\"> 2 </td><td class=\"col3\"> 3 </td></tr>\n<tr class=\"row2\"><td class=\"col1\"> 4 </td><td class=\"col2\"> 5 </td><td class=\"col3\"> 6 </td></tr>\n",
+                           '{% tablerow n in numbers cols:3%} {{n}} {% endtablerow %}',
+                           'numbers' => ArrayDrop.new([1,2,3,4,5,6]))
+  end
+
+  def test_offset_and_limit
+    assert_template_result("<tr class=\"row1\">\n<td class=\"col1\"> 1 </td><td class=\"col2\"> 2 </td><td class=\"col3\"> 3 </td></tr>\n<tr class=\"row2\"><td class=\"col1\"> 4 </td><td class=\"col2\"> 5 </td><td class=\"col3\"> 6 </td></tr>\n",
+                           '{% tablerow n in numbers cols:3 offset:1 limit:6%} {{n}} {% endtablerow %}',
+                           'numbers' => [0,1,2,3,4,5,6,7])
+  end
 end # HtmlTagTest

test/liquid/tags/standard_tag_test.rb

@@ -47,166 +47,6 @@ class StandardTagTest < Test::Unit::TestCase
                                      {%endcomment%}bar')
   end
 
-  def test_for
-    assert_template_result(' yo  yo  yo  yo ','{%for item in array%} yo {%endfor%}','array' => [1,2,3,4])
-    assert_template_result('yoyo','{%for item in array%}yo{%endfor%}','array' => [1,2])
-    assert_template_result(' yo ','{%for item in array%} yo {%endfor%}','array' => [1])
-    assert_template_result('','{%for item in array%}{%endfor%}','array' => [1,2])
-    expected = <<HERE
-
-  yo
-
-  yo
-
-  yo
-
-HERE
-    template = <<HERE
-{%for item in array%}
-  yo
-{%endfor%}
-HERE
-    assert_template_result(expected,template,'array' => [1,2,3])
-  end
-
-  def test_for_with_range
-    assert_template_result(' 1  2  3 ','{%for item in (1..3) %} {{item}} {%endfor%}')
-  end
-
-  def test_for_with_variable
-    assert_template_result(' 1  2  3 ','{%for item in array%} {{item}} {%endfor%}','array' => [1,2,3])
-    assert_template_result('123','{%for item in array%}{{item}}{%endfor%}','array' => [1,2,3])
-    assert_template_result('123','{% for item in array %}{{item}}{% endfor %}','array' => [1,2,3])
-    assert_template_result('abcd','{%for item in array%}{{item}}{%endfor%}','array' => ['a','b','c','d'])
-    assert_template_result('a b c','{%for item in array%}{{item}}{%endfor%}','array' => ['a',' ','b',' ','c'])
-    assert_template_result('abc','{%for item in array%}{{item}}{%endfor%}','array' => ['a','','b','','c'])
-  end
-
-  def test_for_helpers
-    assigns = {'array' => [1,2,3] }
-    assert_template_result(' 1/3  2/3  3/3 ',
-                           '{%for item in array%} {{forloop.index}}/{{forloop.length}} {%endfor%}',
-                           assigns)
-    assert_template_result(' 1  2  3 ', '{%for item in array%} {{forloop.index}} {%endfor%}', assigns)
-    assert_template_result(' 0  1  2 ', '{%for item in array%} {{forloop.index0}} {%endfor%}', assigns)
-    assert_template_result(' 2  1  0 ', '{%for item in array%} {{forloop.rindex0}} {%endfor%}', assigns)
-    assert_template_result(' 3  2  1 ', '{%for item in array%} {{forloop.rindex}} {%endfor%}', assigns)
-    assert_template_result(' true  false  false ', '{%for item in array%} {{forloop.first}} {%endfor%}', assigns)
-    assert_template_result(' false  false  true ', '{%for item in array%} {{forloop.last}} {%endfor%}', assigns)
-  end
-
-  def test_for_and_if
-    assigns = {'array' => [1,2,3] }
-    assert_template_result('+--',
-                           '{%for item in array%}{% if forloop.first %}+{% else %}-{% endif %}{%endfor%}',
-                           assigns)
-  end
-
-  def test_for_else
-    assert_template_result('+++', '{%for item in array%}+{%else%}-{%endfor%}', 'array'=>[1,2,3])
-    assert_template_result('-',   '{%for item in array%}+{%else%}-{%endfor%}', 'array'=>[])
-    assert_template_result('-',   '{%for item in array%}+{%else%}-{%endfor%}', 'array'=>nil)
-  end
-
-  def test_limiting
-    assigns = {'array' => [1,2,3,4,5,6,7,8,9,0]}
-    assert_template_result('12', '{%for i in array limit:2 %}{{ i }}{%endfor%}', assigns)
-    assert_template_result('1234', '{%for i in array limit:4 %}{{ i }}{%endfor%}', assigns)
-    assert_template_result('3456', '{%for i in array limit:4 offset:2 %}{{ i }}{%endfor%}', assigns)
-    assert_template_result('3456', '{%for i in array limit: 4 offset: 2 %}{{ i }}{%endfor%}', assigns)
-  end
-
-  def test_dynamic_variable_limiting
-    assigns = {'array' => [1,2,3,4,5,6,7,8,9,0]}
-    assigns['limit'] = 2
-    assigns['offset'] = 2
-
-    assert_template_result('34', '{%for i in array limit: limit offset: offset %}{{ i }}{%endfor%}', assigns)
-  end
-
-  def test_nested_for
-    assigns = {'array' => [[1,2],[3,4],[5,6]] }
-    assert_template_result('123456', '{%for item in array%}{%for i in item%}{{ i }}{%endfor%}{%endfor%}', assigns)
-  end
-
-  def test_offset_only
-    assigns = {'array' => [1,2,3,4,5,6,7,8,9,0]}
-    assert_template_result('890', '{%for i in array offset:7 %}{{ i }}{%endfor%}', assigns)
-  end
-
-  def test_pause_resume
-    assigns = {'array' => {'items' => [1,2,3,4,5,6,7,8,9,0]}}
-    markup = <<-MKUP
-      {%for i in array.items limit: 3 %}{{i}}{%endfor%}
-      next
-      {%for i in array.items offset:continue limit: 3 %}{{i}}{%endfor%}
-      next
-      {%for i in array.items offset:continue limit: 3 %}{{i}}{%endfor%}
-      MKUP
-    expected = <<-XPCTD
-      123
-      next
-      456
-      next
-      789
-      XPCTD
-    assert_template_result(expected,markup,assigns)
-  end
-
-  def test_pause_resume_limit
-    assigns = {'array' => {'items' => [1,2,3,4,5,6,7,8,9,0]}}
-    markup = <<-MKUP
-      {%for i in array.items limit:3 %}{{i}}{%endfor%}
-      next
-      {%for i in array.items offset:continue limit:3 %}{{i}}{%endfor%}
-      next
-      {%for i in array.items offset:continue limit:1 %}{{i}}{%endfor%}
-      MKUP
-    expected = <<-XPCTD
-      123
-      next
-      456
-      next
-      7
-      XPCTD
-    assert_template_result(expected,markup,assigns)
-  end
-
-  def test_pause_resume_BIG_limit
-    assigns = {'array' => {'items' => [1,2,3,4,5,6,7,8,9,0]}}
-    markup = <<-MKUP
-      {%for i in array.items limit:3 %}{{i}}{%endfor%}
-      next
-      {%for i in array.items offset:continue limit:3 %}{{i}}{%endfor%}
-      next
-      {%for i in array.items offset:continue limit:1000 %}{{i}}{%endfor%}
-      MKUP
-    expected = <<-XPCTD
-      123
-      next
-      456
-      next
-      7890
-      XPCTD
-      assert_template_result(expected,markup,assigns)
-  end
-
-
-  def test_pause_resume_BIG_offset
-    assigns = {'array' => {'items' => [1,2,3,4,5,6,7,8,9,0]}}
-    markup = %q({%for i in array.items limit:3 %}{{i}}{%endfor%}
-      next
-      {%for i in array.items offset:continue limit:3 %}{{i}}{%endfor%}
-      next
-      {%for i in array.items offset:continue limit:3 offset:1000 %}{{i}}{%endfor%})
-    expected = %q(123
-      next
-      456
-      next
-      )
-      assert_template_result(expected,markup,assigns)
-  end
-
   def test_assign
     assigns = {'var' => 'content' }
     assert_template_result('var2:  var2:content', 'var2:{{var2}} {%assign var2 = var%} var2:{{var2}}', assigns)
@@ -445,12 +285,6 @@ HERE
     assert_template_result('', '{% if null == true %}?{% endif %}', {})
   end
 
-  def test_for_reversed
-    assigns = {'array' => [ 1, 2, 3] }
-    assert_template_result('321','{%for item in array reversed %}{{item}}{%endfor%}',assigns)
-  end
-
-
   def test_ifchanged
     assigns = {'array' => [ 1, 1, 2, 2, 3, 3] }
     assert_template_result('123','{%for item in array%}{%ifchanged%}{{item}}{% endifchanged %}{%endfor%}',assigns)