yugui	2009-01-01 15:42:39 +0900 (Thu, 01 Jan 2009)

  New Revision: 21230

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=21230

  Log:
    merges r21211 and r21213 from trunk into ruby_1_9_1.
    update rdoc.

  Modified files:
    branches/ruby_1_9_1/io.c

Index: ruby_1_9_1/io.c
===================================================================
--- ruby_1_9_1/io.c	(revision 21229)
+++ ruby_1_9_1/io.c	(revision 21230)
@@ -281,6 +281,12 @@
  *
  *     IO.try_convert(STDOUT)     # => STDOUT
  *     IO.try_convert("STDOUT")   # => nil
+ *
+ *     require 'zlib'
+ *     f = open("/tmp/zz.gz")       # => #<File:/tmp/zz.gz>
+ *     z = Zlib::GzipReader.open(f) # => #<Zlib::GzipReader:0x81d8744>
+ *     IO.try_convert(z)            # => #<File:/tmp/zz.gz>
+ *
  */
 static VALUE
 rb_io_s_try_convert(VALUE dummy, VALUE io)

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