Only check script lines for continuation keywords

If a non-script line starts with a keyword it can cause errors.

lib/haml/parser.rb

@@ -209,7 +209,15 @@ module Haml
       return unless line.tabs <= @template_tabs && @template_tabs > 0
 
       to_close = @template_tabs - line.tabs
-      to_close.times {|i| close unless to_close - 1 - i == 0 && mid_block_keyword?(line.text)}
+      to_close.times {|i| close unless to_close - 1 - i == 0 && continuation_script?(line.text)}
+    end
+
+    def continuation_script?(text)
+      text[0] == SILENT_SCRIPT && mid_block_keyword?(text)
+    end
+
+    def mid_block_keyword?(text)
+      MID_BLOCK_KEYWORDS.include?(block_keyword(text))
     end
 
     # Processes a single line of Haml.
@@ -256,10 +264,6 @@ module Haml
       keyword[0] || keyword[1]
     end
 
-    def mid_block_keyword?(text)
-      MID_BLOCK_KEYWORDS.include?(block_keyword(text))
-    end
-
     def push(node)
       @parent.children << node
       node.parent = @parent

test/parser_test.rb

@@ -116,6 +116,12 @@ module Haml
       refute node.value[:revealed]
     end
 
+    test "only script lines are checked for continuation keywords" do
+      haml = "- if true\n  setup\n- else\n  else\n"
+      node = parse(haml).children[0]
+      assert_equal(3, node.children.size)
+    end
+
     private
 
     def parse(haml, options = nil)