some error message trimming done

t/call-5001.err

@@ -1,3 +1,7 @@
+return ##ERROR: syntax error - no value specified for 'return'
+
+---
+
 return 1 2 ##ERROR: syntax error - excessive argument to 'return' around '2'
 
 ---
@@ -61,6 +65,14 @@ if (< 20 30) else { ##ERROR: syntax error - block expression expected as 'if' bo
 }
 
 
+---
+
+elif (< 20 30) { } ##ERROR: syntax error - elif without if
+
+---
+
+else (< 20 30) { } ##ERROR: syntax error - else without if
+
 ---
 
 catch (e) {} ##ERROR: syntax error - catch without try

t/class-5001.err

@@ -101,6 +101,12 @@ class B {
 
 ---
 
+class B {
+	self.x := 20 ##ERROR: syntax error - unknown class-level variable name 'self.x'
+}
+
+---
+
 class B {
 	var x y
 };
@@ -113,7 +119,7 @@ class X: B {
 		set a 100;
 		set self.b (* t 2);
 
-		set self.c (fun(b) {  ##ERROR: syntax error - unknown class-level variable name
+		set self.c (fun(b) {  ##ERROR: syntax error - unknown class-level variable name 'self.c'
 			printf "xxxx [%d]\n" b;
 		});
 		return self;

t/feed-5001.err

@@ -205,6 +205,10 @@ abc.? := 20 ##ERROR: syntax error - wrong multi-segment identifier 'abc.?'
 
 ---
 
+aaa := ##ERROR: syntax error - missing rvalue for 'aaa'
+
+---
+
 throw ##ERROR: syntax error - no value or expression after 'throw'
 
 ---

t/mlist-5001.err

@@ -1 +1,5 @@
-(1:) ##ERROR: syntax error - missing message after receiver
+(1:) ##ERROR: syntax error - missing message for '1'
+
+---
+
+a +  ##ERROR: syntax error - no operand after binary selector '+'