re: bin/56422: zgrep -l sometimes hangs

[matthew green <mrg%eterna.com.au@localhost>]

The following reply was made to PR bin/56422; it has been noted by GNATS.

From: matthew green <mrg%eterna.com.au@localhost>
To: gnats-bugs%netbsd.org@localhost
Cc: gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost
Subject: re: bin/56422: zgrep -l sometimes hangs
Date: Sat, 02 Oct 2021 14:11:36 +1000

 hannken's description of what is going on makes me think that this
 is related to an uncommon issue i where where "command | less"
 may hang when i try to ^Z it.  it doesn't happen often, but when
 it does, the "command" has not yet finished output and less is
 still reading from it.  i've never seen the hang after the command
 has exited.  when it happens, the whole shell is unavailable and
 i have to kill the command from another shell.
 
 i'll test this (either before commit or after), but my problem was
 only a more than weekly event so it's never been easy to test fixes
 (christos tried a couple of times.)
 
 
 .mrg.