fixed web2py issue IS_STRONG, thanks uzfred
@@ -4577,7 +4577,7 @@ class IS_STRONG(Validator):
% (self.special, self.specials)
)
elif self.special == 0 and self.special is not False:
- if len(all_special) > 0:
+ if len([item for item in all_special if item]) > 0:
failures.append(
self.translator("May not contain any of the following: %s")
% self.specials
