diff --git a/lib/liquid.rb b/lib/liquid.rb
index f4c6fea..dd33dce 100644
--- a/lib/liquid.rb
+++ b/lib/liquid.rb
@@ -35,7 +35,8 @@ module Liquid
   QuotedFragment              = /#{QuotedString}|(?:[^\s,\|'"]|#{QuotedString})+/o
   TagAttributes               = /(\w+)\s*\:\s*(#{QuotedFragment})/o
   AnyStartingTag              = /\{\{|\{\%/
-  PartialTemplateParser       = /#{TagStart}.*?#{TagEnd}|#{VariableStart}.*?#{VariableIncompleteEnd}/om
+  tag_contents                = /(?:#{QuotedString}|.)*?/m
+  PartialTemplateParser       = /#{TagStart}#{tag_contents}#{TagEnd}|#{VariableStart}#{tag_contents}#{VariableIncompleteEnd}/om
   TemplateParser              = /(#{PartialTemplateParser}|#{AnyStartingTag})/om
   VariableParser              = /\[[^\]]+\]|#{VariableSegment}+\??/o
 
diff --git a/test/integration/tags/assign_tag_test.rb b/test/integration/tags/assign_tag_test.rb
new file mode 100644
index 0000000..9796daf
--- /dev/null
+++ b/test/integration/tags/assign_tag_test.rb
@@ -0,0 +1,13 @@
+require 'test_helper'
+
+class AssignTagTest < Minitest::Test
+  include Liquid
+
+  def test_assign
+    assert_template_result('monkey', "{% assign foo = 'monkey' %}{{ foo }}")
+  end
+
+  def test_string_with_end_tag
+    assert_template_result("{% quoted %}", "{% assign string = '{% quoted %}' %}{{ string }}")
+  end
+end
diff --git a/test/integration/variable_test.rb b/test/integration/variable_test.rb
index 58df833..cf4cf94 100644
--- a/test/integration/variable_test.rb
+++ b/test/integration/variable_test.rb
@@ -89,4 +89,9 @@ class VariableTest < Minitest::Test
   def test_multiline_variable
     assert_equal 'worked', Template.parse("{{\ntest\n}}").render!('test' => 'worked')
   end
+
+  def test_string_with_curly_brackets
+    json = '{ "key": { "nested": "value" }}'
+    assert_template_result(json, "{{ '#{json}' }}")
+  end
 end