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-rw-r--r--actionpack/lib/action_controller/vendor/html-scanner/html/sanitizer.rb2
-rw-r--r--actionpack/test/template/html-scanner/sanitizer_test.rb1
2 files changed, 2 insertions, 1 deletions
diff --git a/actionpack/lib/action_controller/vendor/html-scanner/html/sanitizer.rb b/actionpack/lib/action_controller/vendor/html-scanner/html/sanitizer.rb
index 09dd08898c..91a97c02ff 100644
--- a/actionpack/lib/action_controller/vendor/html-scanner/html/sanitizer.rb
+++ b/actionpack/lib/action_controller/vendor/html-scanner/html/sanitizer.rb
@@ -33,7 +33,7 @@ module HTML
result = super
# strip any comments, and if they have a newline at the end (ie. line with
# only a comment) strip that too
- result.gsub!(/<!--(.*?)-->[\n]?/m, "") if result
+ result = result.gsub(/<!--(.*?)-->[\n]?/m, "") if (result && result =~ /<!--(.*?)-->[\n]?/m)
# Recurse - handle all dirty nested tags
result == text ? result : sanitize(result, options)
end
diff --git a/actionpack/test/template/html-scanner/sanitizer_test.rb b/actionpack/test/template/html-scanner/sanitizer_test.rb
index fcc3782f04..678cb9eeeb 100644
--- a/actionpack/test/template/html-scanner/sanitizer_test.rb
+++ b/actionpack/test/template/html-scanner/sanitizer_test.rb
@@ -20,6 +20,7 @@ class SanitizerTest < ActionController::TestCase
assert_equal "This has a here.", sanitizer.sanitize("This has a <![CDATA[<section>]]> here.")
assert_equal "This has an unclosed ", sanitizer.sanitize("This has an unclosed <![CDATA[<section>]] here...")
[nil, '', ' '].each { |blank| assert_equal blank, sanitizer.sanitize(blank) }
+ assert_nothing_raised { sanitizer.sanitize("This is a frozen string with no tags".freeze) }
end
def test_strip_links