# CMAKE_MATCH_<n>

New in version 3.9.

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 `CMAKE_MATCH_COUNT` variable holds the number of match expressions when these are filled.