Ben Boeckel b794164143 cmStringCommand: clear intermediate matches ...

When `string(REGEX REPLACE)` or `string(REGEX MATCHALL)` loop
internally, they store their matches, but they do not clear the previous
match from an earlier iteration. This can leave the contents of
`CMAKE_MATCH_<N>` with bogus values for later matches in the string if
they have groups which earlier matched a non-empty string, but now match
an empty string.

Fixes #17079.

2017-07-21 09:09:56 -04:00

658 B

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