Re: unset does not remove functions like a[b] unless -f is specified

[Martin D Kealey]

> ...in posix mode, fname must be a valid shell name and may not be the name
> of one of the POSIX special builtins.
> In default mode, a function name can be any unquoted shell word that does
> not contain $.  ...
>

I'm guessing the intention is that it shouldn't contain any expansions, so
it also shouldn't contain `backticks` or <(command substitutions).

Hmm, I wonder whether <(:) could be a valid function name, if it expands to
something like /dev/fd/63?

I agreed, it's better to make the documentation agree with how it actually
behaves, rather than add more weirdness to the behaviour.

-Martin