Resolve a submodule url relative to the given repository.
@param out_ buffer to store the absolute submodule url in @param repo Pointer to repository object @param url Relative url @return 0 or an error code
See Implementation
Resolve a submodule url relative to the given repository.
@param out_ buffer to store the absolute submodule url in @param repo Pointer to repository object @param url Relative url @return 0 or an error code