Query regarding errno filtering

[Sahil]

Hi,

I found this enhancement request [1] on github to extend "-e status" for 
filtering errno values. I would like to take this up.

Currently, this qualifier takes values such as "successful", "failed", etc. 
Instead of extending the "status" qualifier, would it be appropriate to have a 
new qualifier as follows?

        -e errno=ERRNO_VALUE

[1] https://github.com/strace/strace/issues/258

Thanks,
Sahil