Re: io.popen binary write compatibility

[Enrico Colombini <erix@...>]

On 25/09/2014 3.43, Luiz Henrique de Figueiredo wrote:
> In Posix, the only possible modes for popen are 'r' and 'w':
> 	http://pubs.opengroup.org/onlinepubs/009695399/functions/popen.html
>
> To quote: "if mode is any other value, the result is undefined."

Thanks. Here I have a problem, because my workaround (try 'wb' first, 
use 'w' if I get nil) is not guaranteed to work.

Should I detect the host system (something that I tried to avoid) or is 
there a cleaner solution?

--
  Enrico