Date: Sat, 31 May 2008 12:11:01 +0200 From: Stefan Farfeleder <stefan@fafoe.narf.at> To: John Baldwin <jhb@freebsd.org> Cc: freebsd-hackers@freebsd.org, hackers@freebsd.org, Mike Meyer <mwm@mired.org>, John E Hein <jhein@timing.com> Subject: Re: Why doesn't autoconf like our /bin/sh? Message-ID: <20080531101101.GA1077@lizard.fafoe.narf.at> In-Reply-To: <200805290004.41653.jhb@freebsd.org> References: <20080309152712.42752293@bhuda.mired.org> <18489.32903.477434.465037@gromit.timing.com> <20080525154537.GB1026@lizard.fafoe.narf.at> <200805290004.41653.jhb@freebsd.org>
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On Thu, May 29, 2008 at 12:04:41AM -0400, John Baldwin wrote:
> On Sunday 25 May 2008 11:45:37 am Stefan Farfeleder wrote:
> > On Sun, May 25, 2008 at 09:06:47AM -0600, John E Hein wrote:
> > > FWIW, it seems bash and sh report line number differently.
> > >
> > > # grep -n ^ ~/tmp/ln
> > > 1:#!/bin/sh
> > > 2:echo f line: $LINENO
> > > 3:f()
> > > 4:{
> > > 5:echo f line: $LINENO
> > > 6:}
> > > 7:
> > > 8:f
> > > 9:echo main line: $LINENO
> > > 10:f
> > >
> > >
> > > # /bin/sh ~/tmp/ln
> > > f line: 2
> > > f line: 3
> > > main line: 9
> > > f line: 3
> > >
> > >
> > > # bash ~/tmp/ln
> > > f line: 2
> > > f line: 5
> > > main line: 9
> > > f line: 5
> >
> > Yes, I know. I think it is a bug in bash as SUSv3 states:
> >
> > "Set by the shell to a decimal number representing the current
> > sequential line number (numbered starting with 1) within a script or
> > function before it executes each command."
>
> Actually, the bash way seems more intuitive. And it does say "the current
> sequentional line number within a ... function before it executes each
> command"
>
> The "within a function" implies that this property goes inside of functions
> instead of forcing all commands in a function to use the starting line of the
> function which is what you are saying?
I've started a thread about that on standards@.
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