> When you're programming against a spec (POSIX), you don't "make assumptions". You rely only on what it says in the spec. I've been burned several times by re

> When you're programming against a spec (POSIX), you don't "make assumptions". You rely only on what it says in the spec. I've been burned several times by relying on what it says in a spec, when the implementation turned out to behave slightly differently.