D1703: logtoprocess: connect all fds to /dev/null to avoid bad interaction with pager

[yuja (Yuya Nishihara)]

yuja added inline comments.

INLINE COMMENTS

> logtoprocess.py:94
> +                # and pager will wait for scripts to end if we don't do that
> +                nullrfd = open(os.devnull, 'r')
> +                nullwfd = open(os.devnull, 'w')

Better to close these file objects in the parent process, though that wouldn't matter.

As we only need a file descriptor, `os.open(os.devnull, os.O_RDWR)` can be used.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D1703

To: lothiraldan, #hg-reviewers
Cc: yuja, mercurial-devel