Re: Odd behavior using MULTIOS

[Clinton Bunch <cdbunch@xxxxxxxxxxx>]

Ok.  Well I got the same result on 4.3.17 on HP-UX 11.31 and 5.5.1 on 
Centos Linux 8.  So if it's a bug, it's been there a while.

Although my original use case was to create a file descriptor that 
printed both to stderr and a log file, where simple messages would be 
printed to both while more details could be sent to the logfile without 
doubling the print statements for the simple messages. So the ordering 
problem I initially posted about would affect this use case as well, 
making it, for me at least, moot.

On 11/11/2020 11:25 AM, Peter Stephenson wrote:
> > On 11 November 2020 at 17:11 Clinton Bunch <cdbunch@xxxxxxxxxxx> wrote:
> > Another thing I noticed is that MULTIOS doesn't appear to work with exec
> >
> > i.e.
> >
> > exec 3>/tmp/test1 3>/tmp/test2
> >
> > causes the script to hang.
> >
> > I'm not sure why.  Am I just being dense today?
> That sounds like a real bug.  The implementation is going to be a little
> different for this case, indeed we effectively get a coprocess so anyone
> fixing it may have their work cut out, but I'm not aware of any actual
> expectation that it doesn't work, and certainly not that it hangs.
>
> pws