Function svn_relpath_join 

pub unsafe extern "C" fn svn_relpath_join(
    base: *const c_char,
    component: *const c_char,
    result_pool: *mut apr_pool_t,
) -> *mut c_char

Join a base relpath (@a base) with a component (@a component). @a component need not be a single component.

If either @a base or @a component is the empty path, then the other argument will be copied and returned. If both are the empty path the empty path is returned.

Allocate the result in @a result_pool.

@since New in 1.7.