diff -r 31b81f20fd9a -r fbff6f601370 main_testing3/re_test3.scala
--- a/main_testing3/re_test3.scala	Thu Nov 02 13:53:37 2023 +0000
+++ b/main_testing3/re_test3.scala	Thu Nov 02 23:34:53 2023 +0000
@@ -1,22 +1,25 @@
-import M3._
+
+def urbanmain() = {
+
+  import M3._
 
 
-assert(simp(ZERO | ONE) == ONE)
-assert(simp(STAR(ZERO | ONE)) == STAR(ZERO | ONE))
-assert(simp(ONE ~ (ONE ~ (ONE ~ CHAR('a')))) == CHAR('a'))
-assert(simp(((ONE ~ ONE) ~ ONE) ~ CHAR('a')) == CHAR('a'))
-assert(simp(((ONE | ONE) ~ ONE) ~ CHAR('a')) == CHAR('a'))
-assert(simp(ONE ~ (ONE ~ (ONE ~ ZERO))) == ZERO)
-assert(simp(ALT(ONE ~ (ONE ~ (ONE ~ ZERO)), CHAR('a'))) == CHAR('a'))
-assert(simp(CHAR('a') | CHAR('a')) == CHAR('a'))
-assert(simp(CHAR('a') ~ CHAR('a')) == CHAR('a') ~ CHAR('a'))
-assert(simp(ONE | CHAR('a')) == (ONE | CHAR('a')))
-assert(simp(ALT((CHAR('a') | ZERO) ~ ONE,
-                  ((ONE | CHAR('b')) | CHAR('c')) ~ (CHAR('d') ~ ZERO))) == CHAR('a'))
-assert(simp((ZERO | ((ZERO | ZERO) | (ZERO | ZERO))) ~ ((ONE | ZERO) | ONE ) ~ (CHAR('a'))) == ZERO)
-assert(simp(ALT(ONE | ONE, ONE | ONE)) == ONE)
-assert(simp(ALT(ZERO | CHAR('a'), CHAR('a') | ZERO)) == CHAR('a'))
-assert(simp(ALT(ONE | CHAR('a'), CHAR('a') | ONE)) == ALT(ONE, CHAR('a')))
-assert(simp(ALTs(Nil)) == ZERO)
-assert(simp(SEQs(List(CHAR('a')))) == CHAR('a'))
+  assert(simp(ZERO | ONE) == ONE)
+  assert(simp(STAR(ZERO | ONE)) == STAR(ZERO | ONE))
+  assert(simp(ONE ~ (ONE ~ (ONE ~ CHAR('a')))) == CHAR('a'))
+  assert(simp(((ONE ~ ONE) ~ ONE) ~ CHAR('a')) == CHAR('a'))
+  assert(simp(((ONE | ONE) ~ ONE) ~ CHAR('a')) == CHAR('a'))
+  assert(simp(ONE ~ (ONE ~ (ONE ~ ZERO))) == ZERO)
+  assert(simp(ALT(ONE ~ (ONE ~ (ONE ~ ZERO)), CHAR('a'))) == CHAR('a'))
+  assert(simp(CHAR('a') | CHAR('a')) == CHAR('a'))
+  assert(simp(CHAR('a') ~ CHAR('a')) == CHAR('a') ~ CHAR('a'))
+  assert(simp(ONE | CHAR('a')) == (ONE | CHAR('a')))
+  assert(simp(ALT((CHAR('a') | ZERO) ~ ONE, ((ONE | CHAR('b')) | CHAR('c')) ~ (CHAR('d') ~ ZERO))) == CHAR('a'))
+  assert(simp((ZERO | ((ZERO | ZERO) | (ZERO | ZERO))) ~ ((ONE | ZERO) | ONE ) ~ (CHAR('a'))) == ZERO)
+  assert(simp(ALT(ONE | ONE, ONE | ONE)) == ONE)
+  assert(simp(ALT(ZERO | CHAR('a'), CHAR('a') | ZERO)) == CHAR('a'))
+  assert(simp(ALT(ONE | CHAR('a'), CHAR('a') | ONE)) == ALT(ONE, CHAR('a')))
+  assert(simp(ALTs(Nil)) == ZERO)
+  assert(simp(SEQs(List(CHAR('a')))) == CHAR('a'))
 
+}