fixes #798

tests/trmacros/tor.nim

@@ -0,0 +1,28 @@
+discard """
+  output: '''3060
+true
+3'''
+"""
+
+template arithOps: expr = (`+` | `-` | `*`)
+template testOr{ (arithOps{f})(a, b) }(a, b, f: expr): expr = f(a+1, b)
+
+let xx = 10
+echo 10*xx
+
+template t{x = (~x){y} and (~x){z}}(x, y, z: bool): stmt =
+  x = y
+  if x: x = z
+
+var
+  a = true
+  b = true
+  c = false
+a = b and a
+echo a
+
+# bug #798
+template t012{(0|1|2){x}}(x: expr): expr = x+1
+let z = 1
+# outputs 3 thanks to fixpoint iteration:
+echo z