[BUG] coman behaviour unexpectedly with nested comments

[NEX-S]

coman.nvim behavior unexpectedly with nested comments

function myFunc ()
    -- call foo func
    foo()
    -- call bar func
    bar()
end

:ComComment will get this

-- function myFunc ()
    call foo func
--     foo()
    call bar func
--     bar()
-- end

the original comment inside will be uncommented, maybe need to be like this

-- function myFunc ()
--     -- call foo func
--     foo()
--     -- call bar func
--     bar()
-- end