lib/ronn/utils.rb in ronn-ng-0.7.4 vs lib/ronn/utils.rb in ronn-ng-0.8.0.SNAPSHOT

@@ -1,19 +1,20 @@
 require 'set'
 require 'cgi'
 
 module Ronn
+  # Miscellaneous utilities.
   module Utils
-
     # All HTML 4 elements and some that are in common use.
     HTML = %w[
-      a abbr acronym address applet area b base basefont bdo big blockquote body br
-      button caption center cite code col colgroup dd del dfn dir div dl dt em
-      fieldset font form frame frameset h1 h2 h3 h4 h5 h6 head hr html i iframe img
-      input ins isindex kbd label legend li link map menu meta noframes noscript
-      object ol optgroup option p param pre q s samp script select small span strike
-      strong style sub sup table tbody td textarea tfoot th thead title tr tt u ul var
+      a abbr acronym address applet area b base basefont bdo big blockquote body
+      br button caption center cite code col colgroup dd del dfn dir div dl dt
+      em fieldset font form frame frameset h1 h2 h3 h4 h5 h6 head hr html i
+      iframe img input ins isindex kbd label legend li link map menu meta
+      noframes noscript object ol optgroup option p param pre q s samp script
+      select small span strike strong style sub sup table tbody td textarea
+      tfoot th thead title tr tt u ul var
     ].to_set
 
     # Block elements.
     HTML_BLOCK = %w[
       blockquote body colgroup dd div dl dt fieldset form frame frameset
@@ -45,9 +46,10 @@
     end
 
     def child_of?(node, tag)
       while node
         return true if node.name && node.name.downcase == tag
+        return false if node.document?
         node = node.parent
       end
       false
     end
   end