From: Daniel Jacobowitz <drow@false.org>
To: gdb-patches@sourceware.org
Subject: Re: [patch] Compile fix for 64-bit HPUX
Date: Thu, 30 Mar 2006 00:05:00 -0000 [thread overview]
Message-ID: <20060329230151.GC9916@nevyn.them.org> (raw)
In-Reply-To: <jemzfaw4c4.fsf@sykes.suse.de>
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
next prev parent reply other threads:[~2006-03-29 23:01 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-03-26 10:16 Randolph Chung
2006-03-28 22:27 ` Daniel Jacobowitz
2006-03-29 0:18 ` Andreas Schwab
2006-03-30 0:05 ` Daniel Jacobowitz [this message]
2006-03-30 13:05 ` Andreas Schwab
2006-03-30 13:37 ` Randolph Chung
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