Messing with someone else's code

Sup /prog/

When I have to put my hands in someone else's dirty code I feel unconfortable. Ok, this should be the same for everyone here, however there's something that absolutely drives me crazy:
- Software generated by automatic code generation tools;
- Code binded to a specific IDE that can work only with it;

Discuss.

I'm not sure what you mean by:
- Code binded to a specific IDE that can work only with it;
Some editors like emacs can insert a header comment like:
;;; -*- Mode: Lisp; Package: SOME-PACKAGE -*-
This isn't exactly harmful at all. I've also seen some people include inline code to be used by the editor for helping with some tasks, but the code would work fine in another editor.