nobu	2016-09-28 13:00:27 +0900 (Wed, 28 Sep 2016)

  New Revision: 56280

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=56280

  Log:
    Update Signal.signame doc [ci-skip]
    
    * signal.c (sig_signame): [DOC] Add documentation in the case of
      return nil.  [Fix GH-1449]

  Modified files:
    trunk/ChangeLog
    trunk/signal.c
Index: ChangeLog
===================================================================
--- ChangeLog	(revision 56279)
+++ ChangeLog	(revision 56280)
@@ -1,3 +1,8 @@ https://github.com/ruby/ruby/blob/trunk/ChangeLog#L1
+Wed Sep 28 13:00:25 2016  ksss  <co000ri@g...>
+
+	* signal.c (sig_signame): [DOC] Add documentation in the case of
+	  return nil.  [Fix GH-1449]
+
 Wed Sep 28 10:43:27 2016  URABE Shyouhei  <shyouhei@r...>
 
 	* .travis.yml: delete comments. They were outdated.
Index: signal.c
===================================================================
--- signal.c	(revision 56279)
+++ signal.c	(revision 56280)
@@ -238,9 +238,10 @@ signo2signm(int no) https://github.com/ruby/ruby/blob/trunk/signal.c#L238
 
 /*
  * call-seq:
- *     Signal.signame(signo)  ->  string
+ *     Signal.signame(signo)  ->  string or nil
  *
- *  convert signal number to signal name
+ *  Convert signal number to signal name.
+ *  Returns +nil+ if the signo is an invalid signal number.
  *
  *     Signal.trap("INT") { |signo| puts Signal.signame(signo) }
  *     Process.kill("INT", 0)

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