[Ocaml-pxp-users] Help needed with PXP api

[Alain Frisch]

Hello ocaml-pxp-users list,

I'm struggling with PXP API to load external entities. Basically, I have 
a function of type (string -> string) which downloads non local URLs. 
I'd like to configure PXP to use this function (and access the local 
file system for URLs without an URL scheme), and figure out how to 
combine base and relative URLs. What should I do ?  (I guess this is a 
two-liner, but I can't figure out.)

Thanks !

Alain