文件操作 - CMAKE_MATCH_n.rst
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文件: /usr/share/cmake3/Help/variable/CMAKE_MATCH_n.rst
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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.
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