On 07/31/2010 10:47 AM, Ralf Wildenhues wrote:
> * Paolo Bonzini wrote on Sat, Jul 31, 2010 at 11:24:50AM CEST:
>> cd "${var:-.}"
>
> Is :- portable now?We still recommend against it in the manual. But Solaris /bin/sh supports it, and according to http://www.in-ulm.de/~mascheck/bourne/, it was added in SysIII in 1981, while shell functions appeared in SVR2 in 1984, and shell functions with local $@ in SVR3 in 1986. Since we depend on the latter for most m4sh targest, should we start testing for it in m4sh, and claiming that it is portable within configure scripts? -- Eric Blake [email protected] +1-801-349-2682 Libvirt virtualization library http://libvirt.org
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