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-rw-r--r--test/subamp.awk2
1 files changed, 1 insertions, 1 deletions
diff --git a/test/subamp.awk b/test/subamp.awk
index 2638e6ea..731726cf 100644
--- a/test/subamp.awk
+++ b/test/subamp.awk
@@ -1 +1 @@
-{ sub(/[a-z]/, "&") ; print }
+{ sub(/[[:lower:]]/, "&") ; print }