patch 7.4.1485
Problem:    Job input from buffer is not implemented.
Solution:   Implement it.  Add "in-top" and "in-bot" options.
diff --git a/src/os_unix.c b/src/os_unix.c
index 8e5ac6c..bcfffb4 100644
--- a/src/os_unix.c
+++ b/src/os_unix.c
@@ -5141,8 +5141,7 @@
 # ifdef FEAT_CHANNEL
     channel_set_pipes(channel, fd_in[1], fd_out[0],
 				    use_out_for_err ? INVALID_FD : fd_err[0]);
-    channel_set_job(channel, job);
-    channel_set_options(channel, options);
+    channel_set_job(channel, job, options);
 #  ifdef FEAT_GUI
     channel_gui_register(channel);
 #  endif