CMake/Tests/RunCMake/string/RegexMultiMatchClear-stderr.txt at f2b438cb0afb577ee87c8bc2295ed3d263fc85f2 - CMake - Gitea - ZeroTwo

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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

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 ^matches: Some::;Scope
 results from: string\(REGEX MATCHALL\)
 CMAKE_MATCH_0: -->Scope<--
 CMAKE_MATCH_1: -->Scope<--
 CMAKE_MATCH_2: --><--
 CMAKE_MATCH_COUNT: -->1<--
 replace: \[Some\]\[Scope\]
 results from: string\(REGEX REPLACE\)
 CMAKE_MATCH_0: -->Scope<--
 CMAKE_MATCH_1: -->Scope<--
 CMAKE_MATCH_2: --><--
 CMAKE_MATCH_COUNT: -->1<--$