remove useless call to mb_chars

actionpack/lib/action_view/helpers/text_helper.rb

@@ -162,15 +162,15 @@ def excerpt(text, phrase, *args)
         options.reverse_merge!(:radius => 100, :omission => "...")
 
         phrase = Regexp.escape(phrase)
-        return unless found_pos = text.mb_chars =~ /(#{phrase})/i
+        return unless found_pos = text =~ /(#{phrase})/i
 
         start_pos = [ found_pos - options[:radius], 0 ].max
-        end_pos   = [ [ found_pos + phrase.mb_chars.length + options[:radius] - 1, 0].max, text.mb_chars.length ].min
+        end_pos   = [ [ found_pos + phrase.length + options[:radius] - 1, 0].max, text.length ].min
 
         prefix  = start_pos > 0 ? options[:omission] : ""
-        postfix = end_pos < text.mb_chars.length - 1 ? options[:omission] : ""
+        postfix = end_pos < text.length - 1 ? options[:omission] : ""
 
-        prefix + text.mb_chars[start_pos..end_pos].strip + postfix
+        prefix + text[start_pos..end_pos].strip + postfix
       end
 
       # Attempts to pluralize the +singular+ word unless +count+ is 1. If

activerecord/lib/active_record/validations/uniqueness.rb

@@ -54,7 +54,7 @@ def find_finder_class_for(record) #:nodoc:
 
       def build_relation(klass, table, attribute, value) #:nodoc:
         column = klass.columns_hash[attribute.to_s]
-        value = column.limit ? value.to_s.mb_chars[0, column.limit] : value.to_s if column.text?
+        value = column.limit ? value.to_s[0, column.limit] : value.to_s if column.text?
 
         if !options[:case_sensitive] && value && column.text?
           # will use SQL LOWER function before comparison, unless it detects a case insensitive collation