Running into odd behaviour in Kamailio 5.0.2 and I'm hoping to clarify.  I have a simple route that uses the textops functions subst and remove_hf.  Other than that, there is nothing else done within the route.  In some cases, the remove_hf function returns false as there are no matching headers.

Documentation in https://www.kamailio.org/wiki/cookbooks/5.0.x/core#return seems to show that if there are no explicit return statements, the route should return 1.  However, this route appears to be returning -1.  

My question is: if a function within a route returns a negative value, and there are no explicit return statements, will the entire route return -1 (as it appears is happening), or should the route return 1 as the core cookbook indicates?

Thanks in advance,