Since commit 13c7bb5b0c (cmGeneratorExpression: Update strip function to
collect parsed expressions, 2025-04-08), the logic to strip generator
expressions from a string made incorrect assumptions about the contents of
generator expressions, leading certain cases to be stripped incorrectly.
Clean up the logic and fix broken behavior, and add test coverage with
`string(GENEX_STRIP)`.
Fixes: #27133
Extend commit 5b10f96793 (Linux: Compile with _FILE_OFFSET_BITS=64 on
32-bit Linux, 2020-09-23, v3.19.0-rc1~112^2) to cover `time_t` too,
by compiling with `_TIME_BITS=64`.
`difftime` returns a `double`, so commit 6727270b75 (CMake: Extend
TIMESTAMP sub-commands with new unix time format specifier, 2016-02-16,
v3.6.0-rc1~338^2) cast it to `long` to get an integer result. However,
in the MSVC ABI, `long` is a 32-bit integer. Use an explicit 64-bit
integer type instead.
Fixes: #26716
The semantics mimic other languages like Python, Java, JS, etc.
To advance past a zero-length match, the search algorithm first
tries to find a non-zero alternative branch. If that fails, it
force-advances by 1 character.
Fixes: #13790, #13792, #18690, #26629
When doing successive matches, track the input start and current search
start positions separately to prevent the `^` anchor from matching in
the middle of the string. Add policy CMP0186 to provide compatibility.
Issue: #26629Fixes: #16899
Adds a set of sub commands to the string command for parsing JSON, the
JSON commands are: GET, TYPE, MEMBER, LENGTH, REMOVE, SET, and EQUAL.
Closes: #19501
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.
Add a string(CONCAT) command to simply concatenate input arguments
together. This will be useful for combining strings from different
quoting syntaxes. Add a RunCMake.string test covering these cases.
