akr	2008-04-26 20:54:13 +0900 (Sat, 26 Apr 2008)

  New Revision: 16209

  Modified files:
    trunk/lib/open3.rb

  Log:
    describe about waiting a child process.


  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/trunk/lib/open3.rb?r1=16209&r2=16208&diff_format=u

Index: lib/open3.rb
===================================================================
--- lib/open3.rb	(revision 16208)
+++ lib/open3.rb	(revision 16209)
@@ -42,8 +42,6 @@
   #
   # Block form:
   #
-  #   require 'open3'
-  #
   #   Open3.popen3(cmd) { |stdin, stdout, stderr| ... }
   #   # stdin, stdout and stderr is closed automatically in this form.
   #
@@ -83,6 +81,11 @@
   #
   # The parameter +cmd+ is passed directly to Kernel#spawn.
   #
+  # wait_thr.value waits the termination of the process.
+  # The block form also waits the process when it returns.
+  #
+  # Closing stdin, stdout and stderr does not wait the process.
+  #
   def popen3w(*cmd)
     pw = IO::pipe   # pipe[0] for read, pipe[1] for write
     pr = IO::pipe

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