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-rw-r--r--actionpack/lib/action_controller/vendor/html-scanner/html/selector.rb2
1 files changed, 2 insertions, 0 deletions
diff --git a/actionpack/lib/action_controller/vendor/html-scanner/html/selector.rb b/actionpack/lib/action_controller/vendor/html-scanner/html/selector.rb
index 0fe2e6d1a6..1eadfc0390 100644
--- a/actionpack/lib/action_controller/vendor/html-scanner/html/selector.rb
+++ b/actionpack/lib/action_controller/vendor/html-scanner/html/selector.rb
@@ -128,6 +128,8 @@ module HTML
# (no parent element).
# * <tt>:empty</tt> -- Match the element only if it has no child elements,
# and no text content.
+ # * <tt>:content(string)</tt> -- Match the element only if it has <tt>string</tt>
+ # as its text content (ignoring leading and trailing whitespace).
# * <tt>:only-child</tt> -- Match the element if it is the only child (element)
# of its parent element.
# * <tt>:only-of-type</tt> -- Match the element if it is the only child (element)