Function svn_path_url_add_component2 

pub unsafe extern "C" fn svn_path_url_add_component2(
    url: *const c_char,
    component: *const c_char,
    pool: *mut apr_pool_t,
) -> *const c_char

Extend @a url by @a component, URI-encoding that @a component before adding it to the @a url; return the new @a url, allocated in @a pool. If @a component is @c NULL, just return a copy of @a url, allocated in @a pool.

@a component need not be a single path segment, but if it contains multiple segments, they must be separated by ‘/’. @a component should not begin with ‘/’, however; if it does, the behavior is undefined.

@a url must be in canonical format; it may not have a trailing ‘/’.

@note To add a component that is already URI-encoded, use svn_path_join(url, component, pool) instead.

@note gstein suggests this for when @a component begins with ‘/’:

  "replace the path entirely
   https://example.com:4444/base/path joined with /leading/slash,
   should return: https://example.com:4444/leading/slash
   per the RFCs on combining URIs"

  We may implement that someday, which is why leading '/' is
  merely undefined right now.

@since New in 1.6.