Can't apply textile modifiers to 1 non-ASCII character (#19995).

git-svn-id: http://svn.redmine.org/redmine/trunk@14295 e93f8b46-1217-0410-a6f0-8f06a7374b81

lib/redcloth3.rb

@@ -384,7 +384,7 @@ class RedCloth3 < String
                 (?!\-\-)
                 (#{QTAGS_JOIN}|)      # oqs
                 (#{rcq})              # qtag
-                (\w|[^\s].*?[^\s])    # content
+                ([[:word:]]|[^\s].*?[^\s])    # content
                 (?!\-\-)
                 #{rcq}
                 (#{QTAGS_JOIN}|)      # oqa
@@ -393,7 +393,7 @@ class RedCloth3 < String
                 /(#{rcq})
                 (#{C})
                 (?::(\S+))?
-                (\w|[^\s\-].*?[^\s\-])
+                ([[:word:]]|[^\s\-].*?[^\s\-])
                 #{rcq}/xm 
             end
         [rc, ht, re, rtype]

test/unit/lib/redmine/wiki_formatting/textile_formatter_test.rb

@@ -1,3 +1,5 @@
+#encoding: utf-8
+#
 # Redmine - project management software
 # Copyright (C) 2006-2015  Jean-Philippe Lang
 #
@@ -59,6 +61,10 @@ class Redmine::WikiFormatting::TextileFormatterTest < ActionView::TestCase
     end
   end
 
+  def test_modifier_should_work_with_one_non_ascii_character
+    assert_html_output "*Ä*" => "<strong>Ä</strong>"
+  end
+
   def test_styles
     # single style
     assert_html_output({