Re: eval

[Eric Blake]

[adding bug-autoconf to document a NetBSD bug]

On 05/05/2011 07:23 AM, Chet Ramey wrote:
> On 5/4/11 4:40 PM, Rafael Fernandez wrote:
>> I am used to the behavior of sh on NetBSD which does not require
>> enclosing positional parameters. 
> 
> I'd call that a pretty serious incompatibility on the part of ash and its
> descendants (BSD sh, dash, etc.).  There's no good reason that
> 
> set -- a b c d e f g h i j
> echo $10
> 
> should echo `j'.

Also a POSIX violation:

http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_06_02

"The parameter name or symbol can be enclosed in braces, which are
optional except for positional parameters with more than one digit or
when parameter is followed by a character that could be interpreted as
part of the name."

And worth documenting as a portability pitfall in the autoconf manual.

-- 
Eric Blake   eblake@redhat.com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org

signature.asc
Description: OpenPGP digital signature