Function svn_path_is_backpath_present 

pub unsafe extern "C" fn svn_path_is_backpath_present(
    path: *const c_char,
) -> svn_boolean_t

Test to see if a backpath, i.e. ‘..’, is present in @a path. If not, return @c FALSE. If so, return @c TRUE.

@since New in 1.1.