Re: [patch] Compile fix for 64-bit HPUX

Daniel Jacobowitz
2006-03-29T23:01:55Z

On Wed, Mar 29, 2006 at 01:13:15AM +0200, Andreas Schwab wrote:
> Daniel Jacobowitz <drow@false.org> writes:
>
> >> + oldcflags="${CFLAGS-}"
> >
> > What's ${foo-}? I don't see it in my bash or dash docs.
>
> In (bash)Shell Parameter Expansion, the paragraph before the table:
>
> When not performing substring expansion, Bash tests for a parameter
> that is unset or null; omitting the colon results in a test only for a
> ^^^^^^^^^^^^^^^^^^
> parameter that is unset.

Thanks. I see this in the dash documentation too, and pdksh, so it is
presumably portable.

--
Daniel Jacobowitz
CodeSourcery