* ext/stringio/stringio.c (ungetc): RDoc updated. trunk allows

          pushing back behind the beginning of the pseudo stream.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@25987 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

3 files changed, 9 insertions, 5 deletions

diff --git a/ChangeLog b/ChangeLog
index ee90df1ad5..d72dbd0dd1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Fri Dec  4 13:10:23 2009  NAKAMURA, Hiroshi  <nahi@ruby-lang.org>
+
+	* ext/stringio/stringio.c (ungetc): RDoc updated.  trunk allows
+	  pushing back behind the beginning of the pseudo stream.
+
 Fri Dec  4 03:10:38 2009  Shugo Maeda  <shugo@ruby-lang.org>
 
 	* compile.c (compile_cpath, iseq_compile_each): reverted
diff --git a/ext/stringio/stringio.c b/ext/stringio/stringio.c
index 802c462b56..f193c6ef6a 100644
--- a/ext/stringio/stringio.c
+++ b/ext/stringio/stringio.c
@@ -696,10 +696,9 @@ strio_extend(struct StringIO *ptr, long pos, long len)
  *   strio.ungetc(string)   -> nil
  *
  * Pushes back one character (passed as a parameter) onto *strio*
- * such that a subsequent buffered read will return it.  Pushing back 
- * behind the beginning of the buffer string is not possible.  Nothing
- * will be done if such an attempt is made.
- * In other case, there is no limitation for multiple pushbacks.
+ * such that a subsequent buffered read will return it.  There is no
+ * limitation for multiple pushbacks including pushing back behind the
+ * beginning of the buffer string.
  */
 static VALUE
 strio_ungetc(VALUE self, VALUE c)
diff --git a/test/stringio/test_stringio.rb b/test/stringio/test_stringio.rb
index 63647683ca..30284faee2 100644
--- a/test/stringio/test_stringio.rb
+++ b/test/stringio/test_stringio.rb
@@ -327,7 +327,7 @@ class TestStringIO < Test::Unit::TestCase
     s = "1234"
     f = StringIO.new(s, "r")
     assert_nothing_raised { f.ungetc("x") }
-    assert_equal("x", f.getc) # bug?
+    assert_equal("x", f.getc) # bug? -> it's a feature from 1.9.
     assert_equal("1", f.getc)
 
     s = "1234"