diff --git a/ChangeLog b/ChangeLog
index a5f7f0aa2a..217c1d33c6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Sat Jan 31 18:03:41 2009  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* lib/optparse.rb (List#accept, parse_in_order): n option is no
+	  longer needed.
+
 Sat Jan 31 14:12:43 2009  Tanaka Akira  <akr@fsij.org>
 
 	* lib/pathname.rb (Pathname#each_child): new method.
diff --git a/lib/optparse.rb b/lib/optparse.rb
index 0397382a6b..9c6b3924f0 100644
--- a/lib/optparse.rb
+++ b/lib/optparse.rb
@@ -528,7 +528,7 @@ class OptionParser
     #
     # See OptionParser.accept.
     #
-    def accept(t, pat = /.*/nm, &block)
+    def accept(t, pat = /.*/m, &block)
       if pat
         pat.respond_to?(:match) or
           raise TypeError, "has no `match'", ParseError.filter_backtrace(caller(2))
@@ -1259,7 +1259,7 @@ class OptionParser
       while arg = argv.shift
         case arg
         # long option
-        when /\A--([^=]*)(?:=(.*))?/nm
+        when /\A--([^=]*)(?:=(.*))?/m
           opt, rest = $1, $2
           begin
             sw, = complete(:long, opt, true)
@@ -1275,7 +1275,7 @@ class OptionParser
           end
 
         # short option
-        when /\A-(.)((=).*|.+)?/nm
+        when /\A-(.)((=).*|.+)?/m
           opt, has_arg, eq, val, rest = $1, $3, $3, $2, $2
           begin
             sw, = search(:short, opt)
@@ -1502,7 +1502,7 @@ class OptionParser
   #
   # Any non-empty string, and no conversion.
   #
-  accept(String, /.+/nm) {|s,*|s}
+  accept(String, /.+/m) {|s,*|s}
 
   #
   # Ruby/C-like integer, octal for 0-7 sequence, binary for 0b, hexadecimal