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-rw-r--r--progs/tests/auto/sub.sy3
1 files changed, 3 insertions, 0 deletions
diff --git a/progs/tests/auto/sub.sy b/progs/tests/auto/sub.sy
new file mode 100644
index 0000000..755ae67
--- /dev/null
+++ b/progs/tests/auto/sub.sy
@@ -0,0 +1,3 @@
+start :: fn {
+(1, -2, 3, -4) - (4, 3, -2, -1) <=> (-3, 1, 1, -5)
+}