kakoune/rc/extra/cmake.kak

hook global BufCreate .+\.cmake|.*/CMakeLists.txt %{
    set-option buffer filetype cmake
}

add-highlighter shared/cmake regions
add-highlighter shared/cmake/code default-region group
add-highlighter shared/cmake/comment  region '#' '$' '' fill comment
add-highlighter shared/cmake/argument region '\w+\h*\(\K' '(?=\))' '\(' regions

add-highlighter shared/cmake/code/ regex '\w+\h*(?=\()' 0:meta

add-highlighter shared/cmake/argument/args default-region regex '\$\{\w+\}' 0:variable
add-highlighter shared/cmake/argument/quoted region '"' '(?<!\\)(\\\\)*"' '' group
add-highlighter shared/cmake/argument/raw-quoted region -match-capture '\[(=*)\[' '\](=*)\]' '' ref cmake/argument/quoted

add-highlighter shared/cmake/argument/quoted/ fill string
add-highlighter shared/cmake/argument/quoted/ regex '\$\{\w+\}' 0:variable
add-highlighter shared/cmake/argument/quoted/ regex '\w+\h*(?=\()' 0:function

hook -group cmake-highlight global WinSetOption filetype=cmake %{ add-highlighter window/cmake ref cmake }
hook -group cmake-highlight global WinSetOption filetype=(?!cmake).* %{ remove-highlighter window/cmake }