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-rw-r--r--test/ruby/test_io_m17n.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/test/ruby/test_io_m17n.rb b/test/ruby/test_io_m17n.rb
index 39f3112d69..0dd790f60d 100644
--- a/test/ruby/test_io_m17n.rb
+++ b/test/ruby/test_io_m17n.rb
@@ -853,6 +853,7 @@ EOT
def test_read_stateful
with_pipe("euc-jp:iso-2022-jp") {|r, w|
+ r.binmode
w << "\xA4\xA2"
w.close
assert_equal("\e$B$\"\e(B".force_encoding("iso-2022-jp"), r.read)