Re: bash pollutes namespace it shouldn't touch when emulating sh

[Neven Sajko]

...

> order of special builtins, regular builtins, and shell functions. That
> section doesn't even list all of the regular builtins the various shells

And, that list in POSIX that I linked too defines commands whose
invocation gives unspecified results, thus making them appropriate for
use as implementation-defined extensions without breaking the
interface.