diff -r 3020f8c76baa -r 9e7897f25e13 testing4/re_test.sh
--- a/testing4/re_test.sh	Wed Nov 28 23:26:47 2018 +0000
+++ b/testing4/re_test.sh	Thu Nov 29 17:15:11 2018 +0000
@@ -1,24 +1,26 @@
 #!/bin/bash
-set -e
+set -euo pipefail
+
 
 out=${1:-output}
 
-echo "" > $out
+echo -e "" > $out
 
-echo "Below is the feedback for your submission of CW 8, Part 1." >> $out
-echo "" >> $out
+echo -e "Below is the feedback for your submission of CW 9, Part 1." >> $out
+echo -e "" >> $out
 
 
 # compilation tests
 
 function scala_compile {
-  (ulimit -t 30 -m 1024000 ; scala "$1" 2>> $out 1>> $out) 
+  (ulimit -t 30; JAVA_OPTS="-Xmx1g" scala "$1" 2>> $out 1>> $out)   
 }
 
 # functional tests
 
 function scala_assert {
-  (ulimit -t 30 -m 1024000 ; scala -i "$1" "$2" -e "" 2> /dev/null 1> /dev/null)
+  (ulimit -t 30; JAVA_OPTS="-Xmx1g" scala -nc -i "$1" "$2" -e "" 2> /dev/null 1> /dev/null)
+    
 }
 
 # purity test
@@ -30,53 +32,54 @@
 
 # var, return, ListBuffer test
 #
-echo "re.scala does not contain vars, returns etc?" >> $out
+echo -e "re.scala does not contain vars, returns etc?" >> $out
 
 if (scala_vars re.scala)
 then
-  echo "  --> fail" >> $out
-  tsts0=$(( 1 ))
+  echo -e "   --> fail (make triple-sure your program conforms to the required format)" >> $out 
+  tsts0=$(( 0 ))
 else
-  echo "  --> yes" >> $out
+  echo -e "  --> success" >> $out
   tsts0=$(( 0 )) 
 fi
 
 
 # compilation test
+
 if  [ $tsts0 -eq 0 ]
 then    
-  echo "re.scala runs?" >> $out
+  echo -e "re.scala runs?" >> $out
 
   if (scala_compile re.scala)
   then
-    echo "  --> yes" >> $out
+    echo -e "  --> yes" >> $out
     tsts1=$(( 0 ))
   else
-    echo "  --> scala re.scala did not run successfully" >> $out
+    echo -e "  --> SCALA DID NOT RUN RE.SCALA\n" >> $out
     tsts1=$(( 1 )) 
   fi
 else
   tsts1=$(( 1 ))     
 fi
 
-
+### re tests
 
 if [ $tsts1 -eq 0 ]
 then
-  echo " nullable(ZERO) == false" >> $out
-  echo " nullable(ONE) == true" >> $out
-  echo " nullable(CHAR('a')) == false" >> $out
-  echo " nullable(ZERO | ONE) == true" >> $out
-  echo " nullable(ZERO | CHAR('a')) == false" >> $out
-  echo " nullable(ONE ~  ONE) == true" >> $out
-  echo " nullable(ONE ~ CHAR('a')) == false" >> $out
-  echo " nullable(STAR(ZERO)) == true" >> $out
+  echo -e " nullable(ZERO) == false" >> $out
+  echo -e " nullable(ONE) == true" >> $out
+  echo -e " nullable(CHAR('a')) == false" >> $out
+  echo -e " nullable(ZERO | ONE) == true" >> $out
+  echo -e " nullable(ZERO | CHAR('a')) == false" >> $out
+  echo -e " nullable(ONE ~  ONE) == true" >> $out
+  echo -e " nullable(ONE ~ CHAR('a')) == false" >> $out
+  echo -e " nullable(STAR(ZERO)) == true" >> $out
   
-  if (scala_assert "re.scala" "re1a_test.scala")
+  if (scala_assert "re.scala" "re_test1.scala")
   then
-    echo "  --> success" >> $out
+    echo -e "  --> success" >> $out
   else
-    echo "  --> test failed" >> $out
+    echo -e "  --> \n ONE TEST FAILED\n" >> $out
   fi
 fi
 
@@ -84,16 +87,17 @@
 
 if [ $tsts1 -eq 0 ]
 then
-  echo " der('a', ZERO | ONE) == (ZERO | ZERO)" >> $out
-  echo " der('a', (CHAR('a') | ONE) ~ CHAR('a')) == ALT((ONE | ZERO) ~ CHAR('a'), ONE)" >> $out
-  echo " der('a', STAR(CHAR('a'))) == (ONE ~ STAR(CHAR('a')))" >> $out
-  echo " der('b', STAR(CHAR('a'))) == (ZERO ~ STAR(CHAR('a')))" >> $out
+  echo -e " der('a', ZERO | ONE) == (ZERO | ZERO)" >> $out
+  echo -e " der('a', (CHAR('a') | ONE) ~ CHAR('a')) ==" >> $out
+  echo -e "                 ALT((ONE | ZERO) ~ CHAR('a'), ONE)" >> $out
+  echo -e " der('a', STAR(CHAR('a'))) == (ONE ~ STAR(CHAR('a')))" >> $out
+  echo -e " der('b', STAR(CHAR('a'))) == (ZERO ~ STAR(CHAR('a')))" >> $out
   
-  if (scala_assert "re.scala" "re1b_test.scala")
+  if (scala_assert "re.scala" "re_test2.scala")
   then
-    echo "  --> success" >> $out
+    echo -e "  --> success" >> $out
   else
-    echo "  --> test failed" >> $out
+    echo -e "  --> \n ONE TEST FAILED\n" >> $out
   fi
 fi
 
@@ -101,61 +105,61 @@
 
 if [ $tsts1 -eq 0 ]
 then
-  echo " simp(ZERO | ONE) == ONE" >> $out
-  echo " simp(STAR(ZERO | ONE)) == STAR(ZERO | ONE)" >> $out
-  echo " simp(ONE ~ (ONE ~ (ONE ~ CHAR('a')))) == CHAR('a')" >> $out
-  echo " simp(ONE ~ (ONE ~ (ONE ~ ZERO))) == ZERO" >> $out
-  echo " simp(ALT(ONE ~ (ONE ~ (ONE ~ ZERO)), CHAR('a'))) == CHAR('a')" >> $out
-  echo " simp(CHAR('a') | CHAR('a')) == CHAR('a')" >> $out
-  echo " simp(ONE | CHAR('a')) == (ONE | CHAR('a'))" >> $out
-  echo " simp(ALT((CHAR('a') | ZERO) ~ ONE," >> $out
-  echo "          ((ONE | CHAR('b')) | CHAR('c')) ~ (CHAR('d') ~ ZERO))) == CHAR('a')" >> $out
-  if (scala_assert "re.scala" "re1c_test.scala")
+  echo -e " simp(ZERO | ONE) == ONE" >> $out
+  echo -e " simp(STAR(ZERO | ONE)) == STAR(ZERO | ONE)" >> $out
+  echo -e " simp(ONE ~ (ONE ~ (ONE ~ CHAR('a')))) == CHAR('a')" >> $out
+  echo -e " simp(ONE ~ (ONE ~ (ONE ~ ZERO))) == ZERO" >> $out
+  echo -e " simp(ALT(ONE ~ (ONE ~ (ONE ~ ZERO)), CHAR('a'))) == CHAR('a')" >> $out
+  echo -e " simp(CHAR('a') | CHAR('a')) == CHAR('a')" >> $out
+  echo -e " simp(ONE | CHAR('a')) == (ONE | CHAR('a'))" >> $out
+  echo -e " simp(ALT((CHAR('a') | ZERO) ~ ONE," >> $out
+  echo -e "          ((ONE | CHAR('b')) | CHAR('c')) ~ (CHAR('d') ~ ZERO))) == CHAR('a')" >> $out
+  if (scala_assert "re.scala" "re_test3.scala")
   then
-    echo "  --> success" >> $out
+    echo -e "  --> success" >> $out
   else
-    echo "  --> test failed" >> $out
+    echo -e "  --> \n ONE TEST FAILED\n" >> $out
   fi
 fi
 
 
 if [ $tsts1 -eq 0 ]
 then
-  echo " val EVIL = SEQ(STAR(STAR(CHAR('a'))), CHAR('b'))" >> $out
-  echo " ders(List.fill(5)('a'),EVIL) == SEQ(SEQ(STAR(CHAR('a')),STAR(STAR(CHAR('a')))),CHAR('b'))" >> $out
-  echo " ders(List('b'),EVIL) == ONE" >> $out
-  echo " ders(List('b','b'),EVIL) == ZERO" >> $out
-  echo " matcher(EVIL, \"a\" * 5 ++ \"b\") == true" >> $out
-  echo " matcher(EVIL, \"b\") == true" >> $out
-  echo " matcher(EVIL, \"bb\") == false" >> $out
-  echo " matcher(\"abc\", \"abc\") == true" >> $out
-  echo " matcher((\"ab\" | \"a\") ~ (ONE | \"bc\"), \"abc\") == true" >> $out
-  echo " matcher(ONE, \"\") == true" >> $out
-  echo " matcher(ZERO, \"\") == false" >> $out
-  echo " matcher(ONE | CHAR('a'), \"\") == true" >> $out
-  echo " matcher(ONE | CHAR('a'), \"a\") == true" >> $out
+  echo -e " val EVIL = SEQ(STAR(STAR(CHAR('a'))), CHAR('b'))" >> $out
+  echo -e " ders(\"aaaaa\".toList, EVIL) == SEQ(SEQ(STAR(CHAR('a')),STAR(STAR(CHAR('a')))),CHAR('b'))" >> $out
+  echo -e " ders(List('b'), EVIL) == ONE" >> $out
+  echo -e " ders(\"bb\".toList, EVIL) == ZERO" >> $out
+  echo -e " matcher(EVIL, \"a\" * 5 ++ \"b\") == true" >> $out
+  echo -e " matcher(EVIL, \"b\") == true" >> $out
+  echo -e " matcher(EVIL, \"bb\") == false" >> $out
+  echo -e " matcher(\"abc\", \"abc\") == true" >> $out
+  echo -e " matcher((\"ab\" | \"a\") ~ (ONE | \"bc\"), \"abc\") == true" >> $out
+  echo -e " matcher(ONE, \"\") == true" >> $out
+  echo -e " matcher(ZERO, \"\") == false" >> $out
+  echo -e " matcher(ONE | CHAR('a'), \"\") == true" >> $out
+  echo -e " matcher(ONE | CHAR('a'), \"a\") == true" >> $out
   
-  if (scala_assert "re.scala" "re1d_test.scala")
+  if (scala_assert "re.scala" "re_test4.scala")
   then
-    echo "  --> success" >> $out
+    echo -e "  --> success" >> $out
   else
-    echo "  --> test failed" >> $out
+    echo -e "  --> \n ONE TEST FAILED\n" >> $out  
   fi
 fi
 
 
 if [ $tsts1 -eq 0 ]
 then
-  echo " val EVIL = SEQ(STAR(STAR(CHAR('a'))), CHAR('b'))" >> $out  
-  echo " size(der('a', der('a', EVIL))) == 28" >> $out
-  echo " size(der('a', der('a', der('a', EVIL)))) == 58" >> $out
-  echo " size(ders(\"aaaaaa\".toList, EVIL)) == 8" >> $out
+  echo -e " val EVIL = SEQ(STAR(STAR(CHAR('a'))), CHAR('b'))" >> $out  
+  echo -e " size(der('a', der('a', EVIL))) == 28" >> $out
+  echo -e " size(der('a', der('a', der('a', EVIL)))) == 58" >> $out
+  echo -e " size(ders(\"aaaaaa\".toList, EVIL)) == 8" >> $out
   
-  if (scala_assert "re.scala" "re1e_test.scala")
+  if (scala_assert "re.scala" "re_test5.scala")
   then
-    echo "  --> success" >> $out
+    echo -e "  --> success" >> $out
   else
-    echo "  --> test failed" >> $out
+    echo -e "  --> \n ONE TEST FAILED\n" >> $out   
   fi
 fi