commit 9fcda95a6f55f017536cdf24366754a2304c1059
Author: Nicholas Marriott <nicm@openbsd.org>
Date:   Wed Apr 10 12:20:35 2013 +0000

    Set EV_WRITE for jobs or run/if-shell jobs can hang. From Chris Johnsen.

diff --git a/job.c b/job.c
index b76b334..291e000 100644
--- a/job.c
+++ b/job.c
@@ -109,7 +109,7 @@ job_run(const char *cmd, struct session *s,
 
 	job->event = bufferevent_new(job->fd, NULL, job_write_callback,
 	    job_callback, job);
-	bufferevent_enable(job->event, EV_READ);
+	bufferevent_enable(job->event, EV_READ|EV_WRITE);
 
 	log_debug("run job %p: %s, pid %ld", job, job->cmd, (long) job->pid);
 	return (job);