* lib/pathname.rb (Pathname#sub): new method.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@9287 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Sat Sep 24 08:30:00 2005  Tanaka Akira  <akr@m17n.org>
+
+	* lib/pathname.rb (Pathname#sub): new method.
+
 Sat Sep 24 08:29:36 2005  Minero Aoki  <aamine@loveruby.net>
 
 	* lib/fileutils.rb: fix visibility of FileUtils::NoWrite, Verbose,

lib/pathname.rb

@@ -235,7 +235,11 @@ class Pathname
     "#<#{self.class}:#{@path}>"
   end
 
-  #
+  # Return a pathname which is substituted by String#sub.
+  def sub(pattern, *rest, &block)
+    Pathname.new(@path.sub(pattern, *rest, &block))
+  end
+
   # Returns clean pathname of +self+ with consecutive slashes and useless dots
   # removed.  The filesystem is not accessed.
   #
@@ -438,6 +442,8 @@ class Pathname
   #     #<Pathname:path/to/some>
   #     #<Pathname:path/to/some/file.rb>
   #
+  # It doesn't access actual filesystem.
+  #
   def descend
     paths = []
     v = self
@@ -473,6 +479,8 @@ class Pathname
   #     #<Pathname:path/to>
   #     #<Pathname:path>
   #
+  # It doesn't access actual filesystem.
+  #
   def ascend
     paths = []
     v = self