akr	2012-06-28 19:38:26 +0900 (Thu, 28 Jun 2012)

  New Revision: 36245

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=36245

  Log:
    update doc.

  Modified files:
    trunk/process.c

Index: process.c
===================================================================
--- process.c	(revision 36244)
+++ process.c	(revision 36245)
@@ -3884,6 +3884,9 @@
  *
  *  :close_others is true by default for spawn and IO.popen.
  *
+ *  Note that fds which close-on-exec flag is already set are closed
+ *  regardless of :close_others option.
+ *
  *  So IO.pipe and spawn can be used as IO.popen.
  *
  *    # similar to r = IO.popen(command)

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