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-rw-r--r--libraries/base/tests/T10412.hs7
1 files changed, 7 insertions, 0 deletions
diff --git a/libraries/base/tests/T10412.hs b/libraries/base/tests/T10412.hs
new file mode 100644
index 0000000000..9657ef7d16
--- /dev/null
+++ b/libraries/base/tests/T10412.hs
@@ -0,0 +1,7 @@
+import Data.Char
+
+main :: IO ()
+main = do
+ print $ isMark '\768'
+ print $ isAlphaNum '\768'
+ print $ (isAlpha '\768', isNumber '\768')