Formatting invalid Lua overwrites the file

[ryanpcmcquen]

local function combineTables(...)
    local combinedTable = {}
    local arg = {...}

    for k, v in pairs(arg) do
        if type(v) == 'table' then
            for tk, tv in pairs(v) do
                table.insert(combinedTable, tv)
            end
        end
    end

    return combinedTable
end

function table.assign(...)
    local newTable = {}
    local arg = {...}

    for k, v in pairs(arg) do
        if type(v) == 'table' then
            for tk, tv in pairs(v) do
                newTable[tk] = tv
            end
        end
    end

    return newTable
end

let one = { 'ctrl', 'alt' }
two = { 'shift' }

The let one above is syntactically incorrect in Lua, so running the formatter on it, overwrites the file with the error.

It should probably log somewhere else and preserve the content.