patch 8.0.0103
Problem:    May not process channel readahead. (skywind)
Solution:   If there is readahead don't block on input.
diff --git a/src/os_unix.c b/src/os_unix.c
index 12fb33b..aa3c3e5 100644
--- a/src/os_unix.c
+++ b/src/os_unix.c
@@ -462,6 +462,10 @@
 	/* Checking if a job ended requires polling.  Do this every 100 msec. */
 	if (has_pending_job() && (wait_time < 0 || wait_time > 100L))
 	    wait_time = 100L;
+	/* If there is readahead then parse_queued_messages() timed out and we
+	 * should call it again soon. */
+	if ((wait_time < 0 || wait_time > 100L) && channel_any_readahead())
+	    wait_time = 10L;
 #endif
 
 	/*