Add spaceless tag

test/integration/standard_filter_test.rb

@@ -417,4 +417,9 @@ class StandardFiltersTest < Minitest::Test
   def test_cannot_access_private_methods
     assert_template_result('a', "{{ 'a' | to_number }}")
   end
+
+  def test_strip_html_whitespace
+    html = "<a>\n\n   <b>  \n  <c>a</c> \r\n   </b>   </a>"
+    assert_template_result('<a><b><c>a</c></b></a>', "{{ a | strip_html_whitespace }}", { 'a' => html })
+  end
 end # StandardFiltersTest

test/integration/tags/standard_tag_test.rb

@@ -293,4 +293,9 @@ class StandardTagTest < Minitest::Test
   def test_multiline_tag
     assert_template_result '0 1 2 3', "0{%\nfor i in (1..3)\n%} {{\ni\n}}{%\nendfor\n%}"
   end
+
+  def test_spaceless
+    html = "<a>\n\n   <b>  \n  <c>a</c> \r\n   </b>   </a>"
+    assert_template_result '<a><b><c>a</c></b></a>', "{% spaceless %}#{html}{% endspaceless %}"
+  end
 end # StandardTagTest