| CMAKE_MATCH_<n> | |
| --------------- | |
| Capture group ``<n>`` matched by the last regular expression, for groups | |
| 0 through 9. Group 0 is the entire match. Groups 1 through 9 are the | |
| subexpressions captured by ``()`` syntax. | |
| When a regular expression match is used, CMake fills in ``CMAKE_MATCH_<n>`` | |
| variables with the match contents. The :variable:`CMAKE_MATCH_COUNT` | |
| variable holds the number of match expressions when these are filled. |