I seriously doubt the possibility to (perhaps) change the arg or display name in Unix would be hurtful, granted it was marked / documented correctly.
/ David Hedbor (I live in interesting times)
Previous text:
2002-09-03 23:06: Subject: argv[0]?
Well, basically we believe that introducing functions that are inherently importable by being heavily influenced by e.g. UNIX intrinsics (fork would be a prime example of this) _can_ hurt the language, by making Pike programs less portable. So we are reluctant to have such functions if the actual high level operation (the goal, rather than the means) associated with the function can be reasonably simply accomplished in some other way.
/ Marcus Comstedt (ACROSS) (Hail Ilpalazzo!)