re-adding tag v1_9_0_4 as an alias of trunk@18848v1_9_0_4

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/tags/v1_9_0_4@18849 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

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diff --git a/trunk/ext/pty/README.expect b/trunk/ext/pty/README.expect
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-	README for expect
-		by A. Ito, 28 October, 1998
-
-	Expect library adds IO class a method called expect(), which
-does similar act to tcl's expect extension. 
-
-The usage of the method is:
-
-   IO#expect(pattern,timeout=9999999)
-
-where `pattern' is an instance of String or Regexp and `timeout'
-is Fixnum, which can be omitted. 
-	When the method is called without block, it waits until the
-input which matches the pattern is obtained from the IO or the time
-specified as the timeout passes. When the pattern is obtained from the
-IO, the method returns an array. The first element of the array is the
-entire string obtained from the IO until the pattern matches. The
-following elements indicates the specific pattern which matched to the
-anchor in the regular expression. If the method ends because of
-timeout, it returns nil. 
- 	When the method is called with block, the array is passed as
-the block parameter.