Re: PATCH: file:close() return-value for pipes

[Roberto Ierusalimschy <roberto@...>]

> > On 02/11/2011 02:03 AM, Sam Roberts wrote:
> > > Me, I wouldn't do it by putting exit or signal number in the same
> > > return position, that seems ripe for confusion. I'd have pclose()
> > > return exit status if WIFEXITED, or "nil,signo" if WIFSIGNALLED.
> > 
> > This seems like a good idea, although note that the first return value
> > already uses nil for certain error situations, but these are somewhat
> > esoteric and unlikely to occur in a lua program: see
> > http://pubs.opengroup.org/onlinepubs/9699919799/functions/pclose.html for
> > details.
> 
> Wouldn't be better if the first result was what happened
> ("exit" x "signal") and the second result the actual exit code
> or signal number?

Better yet, it could return true for exit(0) and nil,what,code otherwise.

-- Roberto