Multi-line comments not supported

[sum01]

Since v3 of Cmake, it's had multi-line comments which look like

#[[ this is
my multiline
comment
and it ends after these brackets ]]

Problem Description

See how this highlights incorrectly when declared as a cmake codeblock

#[[ this is
my multiline
comment
and it ends after these brackets ]]

Link to syntax: https://cmake.org/cmake/help/latest/manual/cmake-language.7.html#bracket-comment