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-rw-r--r--test/stringio/test_stringio.rb2
1 files changed, 1 insertions, 1 deletions
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"