lazylistcompat idea ditched.

lslopt/lslparse.py

@@ -1877,6 +1877,14 @@ class parser(object):
         # Allow brackets for assignment of list elements e.g. mylist[5]=4
         self.lazylists = 'lazylists' in options
 
+        # This was once an idea, but it has been discarded because
+        # llListReplaceList requires the argument to be evaluated twice,
+        # so the function is unavoidable. Consider e.g. L[x++] = 3 expanded to
+        # L = llListReplaceList(L, [3], x++, x++).
+        # # Extend the list with integer zeros when lazylists is active and the
+        # # index is greater than the end of the list.
+        # self.lazylistcompat = 'lazylistcompat' in options
+
         # TODO: Enable break/continue
         #self.breakcont = 'breakcont' in options
 

main.py

@@ -62,8 +62,12 @@ Options (+ means active by default, - means inactive by default):
                        hard to debug, but this gets big savings for complex
                        scripts.
   lazylists          - Support syntax like mylist[index] = 5; rather than using
-                       llListReplaceList. Not recommended, as it adds a new
+                       llListReplaceList. Only assignment supported. The list
-                       function.
+                       is extended when the argument is greater than the list
+                       length, by inserting integer zeros. This is implemented
+                       for compatibility with Firestorm, but its use is not
+                       recommended, as it adds a new function, wasting memory
+                       against the very spirit of this program.
 ''' % sys.argv[0])
         return 1