[lmm]

> Wouldn't it mean that you leave software used by millions of users to rot while you rewrite in your newer better stack? Not fixing bugs, holes and regressions? How would that make things better?

Whatever you do, the software will be full of bugs and holes until you rewrite it. So I think the users are best served by prioritising the actual rewrite rather than papering over the cracks.

> Also with newer stack you will still do a bunch of logic errors, that you managed to fix in you old ugly C code base. You gonna repeat that the hard way.

Not so in my experience. The logic is what you port, so you end up with the same logic. But the "micro" bugs disappear, because that part is different between languages.