Index: tests/.expect/loopctrl.txt
===================================================================
--- tests/.expect/loopctrl.txt	(revision 25773cd955079ce07aaa7328c6ad0675f8246c4e)
+++ tests/.expect/loopctrl.txt	(revision 67d4e37911c715a1d255581a76351b6097f6d79f)
@@ -19,4 +19,6 @@
 10 8 6 4 2
 
+1 2 3 4 5 6 7 8 9 10
+10 9 8 7 6 5 4 3 2 1 0
 2 4 6 8 10
 2.1 3.8 5.5 7.2 8.9
@@ -42,2 +44,16 @@
 (10 10)(9 9)(8 8)(7 7)(6 6)(5 5)(4 4)(3 3)(2 2)(1 1)(0 0)
 (10 10)(9 9)(8 8)(7 7)(6 6)(5 5)(4 4)(3 3)(2 2)(1 1)(0 0)
+
+0 -5 1 -4 2 -3 3 -2 4 -1 5 0 6 1 7 2 8 3 9 4
+0 -5 1 -6 2 -7 3 -8 4 -9 5 -10 6 -11 7 -12 8 -13 9 -14
+0 -5 1 -3 2 -1 3 1 4 3 5 5 6 7 7 9 8 11 9 13
+0 -5 1 -7 2 -9 3 -11 4 -13 5 -15 6 -17 7 -19 8 -21 9 -23
+
+0 -5 1 -4 2 -3 3 -2 4 -1 5 0 6 1 7 2 8 3 9 4
+0 -5 1 -6 2 -7 3 -8 4 -9 5 -10 6 -11 7 -12 8 -13 9 -14
+0 -5 1 -3 2 -1 3 1 4 3 5 5 6 7 7 9 8 11 9 13
+0 -5 1 -7 2 -9 3 -11 4 -13 5 -15 6 -17 7 -19 8 -21 9 -23
+
+0 -5 1.5 1 -7 2.5 2 -9 3.5 3 -11 4.5 4 -13 5.5 5 -15 6.5 6 -17 7.5 7 -19 8.5 8 -21 9.5 9 -23 10.5
+0 -5 1.5 1 -7 2.5 2 -9 3.5 3 -11 4.5 4 -13 5.5 5 -15 6.5 6 -17 7.5 7 -19 8.5 8 -21 9.5 9 -23 10.5
+0 -5 1.5 1 -7 2.5 2 -9 3.5 3 -11 4.5 4 -13 5.5 5 -15 6.5 6 -17 7.5 7 -19 8.5 8 -21 9.5 9 -23 10.5
Index: tests/loopctrl.cfa
===================================================================
--- tests/loopctrl.cfa	(revision 25773cd955079ce07aaa7328c6ad0675f8246c4e)
+++ tests/loopctrl.cfa	(revision 67d4e37911c715a1d255581a76351b6097f6d79f)
@@ -10,6 +10,6 @@
 // Created On       : Wed Aug  8 18:32:59 2018
 // Last Modified By : Peter A. Buhr
-// Last Modified On : Thu Feb 21 08:54:47 2019
-// Update Count     : 86
+// Last Modified On : Sat Apr 13 11:03:09 2019
+// Update Count     : 104
 // 
 
@@ -56,4 +56,13 @@
 	for ( ui; 10u -~= 2u ~ 2u ) { sout | ui; }			sout | nl | nl;
 
+	// @ means do nothing
+	for ( i; 1 ~ @ ) {
+	  if ( i > 10 ) break;
+		sout | i;
+	}													sout | nl;
+	for ( i; 10 -~ @ ) {
+	  if ( i < 0 ) break;
+		sout | i;
+	}													sout | nl;
 	for ( i; 2 ~ @ ~ 2 ) {
 	  if ( i > 10 ) break;
@@ -94,5 +103,19 @@
 	for ( s; (S){10,10} -~ (S){0} ~ (S){1} ) { sout | s; } sout | nl;
 	for ( s; (S){10,10} -~= (S){0} ) { sout | s; }		 sout | nl;
-	for ( s; (S){10,10} -~= (S){0} ~ (S){1} ) { sout | s; } sout | nl;
+	for ( s; (S){10,10} -~= (S){0} ~ (S){1} ) { sout | s; } sout | nl | nl;
+
+	for ( i; 10 : j; -5 ~ @ ) { sout | i | j; } sout | nl;
+	for ( i; 10 : j; -5 -~ @ ) { sout | i | j; } sout | nl;
+	for ( i; 10 : j; -5 ~ @ ~ 2 ) { sout | i | j; } sout | nl;
+	for ( i; 10 : j; -5 -~ @ ~ 2 ) { sout | i | j; } sout | nl | nl;
+
+	for ( j; -5 ~ @ : i; 10 ) { sout | i | j; } sout | nl;
+	for ( j; -5 -~ @ : i; 10 ) { sout | i | j; } sout | nl;
+	for ( j; -5 ~ @ ~ 2 : i; 10 ) { sout | i | j; } sout | nl;
+	for ( j; -5 -~ @ ~ 2 : i; 10 ) { sout | i | j; } sout | nl | nl;
+
+	for ( j; -5 -~ @ ~ 2 : i; 10 : k; 1.5 ~ @ ) { sout | i | j | k; } sout | nl;
+	for ( j; -5 -~ @ ~ 2 : k; 1.5 ~ @ : i; 10 ) { sout | i | j | k; } sout | nl;
+	for ( k; 1.5 ~ @ : j; -5 -~ @ ~ 2 : i; 10 ) { sout | i | j | k; } sout | nl;
 }