stomar	2018-10-14 04:04:02 +0900 (Sun, 14 Oct 2018)

  New Revision: 65068

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=65068

  Log:
    string.c: [DOC] add example code for String#strip!

  Modified files:
    trunk/string.c
Index: string.c
===================================================================
--- string.c	(revision 65067)
+++ string.c	(revision 65068)
@@ -8981,6 +8981,9 @@ rb_str_rstrip(VALUE str) https://github.com/ruby/ruby/blob/trunk/string.c#L8981
  *  <code>nil</code> if <i>str</i> was not altered.
  *
  *  Refer to <code>strip</code> for the definition of whitespace.
+ *
+ *     "  hello  ".strip!  #=> "hello"
+ *     "hello".strip!      #=> nil
  */
 
 static VALUE

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