| cmake_path-IS_PREFIX-empty | |
| -------------------------- | |
| * The :command:`cmake_path(IS_PREFIX)` command and the | |
| :genex:`$<PATH:IS_PREFIX>` generator expression no longer treat | |
| an empty path as a prefix of every path. The :command:`if` command's | |
| ``PATH_IS_PREFIX`` operator follows the same rule. | |
| See policy :policy:`CMP0223`. |