Fixed TextHelper#highlight to return the text, not nil, if the phrase is blank...

Fixed TextHelper#highlight to return the text, not nil, if the phrase is blank #1409 [patrick@lenz.sh]

git-svn-id: http://svn-commit.rubyonrails.org/rails/trunk@1429 5ecf4fe2-1ee6-0310-87b1-e25e094e27de

actionpack/CHANGELOG

 *SVN*
 
+* Fixed TextHelper#highlight to return the text, not nil, if the phrase is blank #1409 [patrick@lenz.sh]
+
 * Fixed TagHelper such that :name and 'name' keys in the options doesn't result in two attributes #1455 [take_tk]
 
 * Ensure that helpers are only available to the controllers where they are defined and their subclasses.  #1394 [kdole@tamu.edu]

actionpack/lib/action_view/helpers/text_helper.rb

@@ -26,7 +26,7 @@ def truncate(text, length = 30, truncate_string = "...")
       # passing +highlighter+ as single-quoted string with \1 where the phrase is supposed to be inserted.
       # N.B.: The +phrase+ is sanitized to include only letters, digits, and spaces before use.
       def highlight(text, phrase, highlighter = '<strong class="highlight">\1</strong>')
-        if text.nil? || phrase.nil? then return end
+        if phrase.blank? then return text end
         text.gsub(/(#{escape_regexp(phrase)})/i, highlighter) unless text.nil?
       end
 

actionpack/test/template/text_helper_test.rb

@@ -35,6 +35,11 @@ def test_highlighter
       "This is a <b>beautiful</b> morning, but also a <b>beautiful</b> day",
       highlight("This is a beautiful morning, but also a beautiful day", "beautiful", '<b>\1</b>')
     )
+    
+    assert_equal(
+      "This text is not changed because we supplied an empty phrase",
+      highlight("This text is not changed because we supplied an empty phrase", nil)
+    )
   end
 
   def test_highlighter_with_regexp