Re: [Help-bash] set -u in an arithmetic context

[Bill Gradwohl]

On Thu, Apr 26, 2012 at 11:01 AM, Eric Blake <address@hidden> wrote:

Especially since 'set -u' _does_ affect arithmetic expansion (although I
couldn't quickly find such a requirement in POSIX, so we may have a hole
in the standard):

We're on the same bash level.

I question the notion of "expansion" in this case. Without the $ or ${} wrappers is there "expansion" going on?

Man bash says that set -u work as part of "parameter expansion". Without the $ or ${} wrappers, isn't it just taking whatever the value is an using it as is with no expansion?

--
Bill Gradwohl