commit https://github.com/vim/vim/commit/187db50d0499aecf4cfd42fb4db0a1bebf61c8cd Author: Bram Moolenaar <Bram@vim.org> Date: Sat Feb 27 14:44:26 2016 +0100 patch 7.4.1426 Problem: The "out-io" option for jobs is not implemented yet. Solution: Implement the "buffer" value: append job output to a buffer.

--- a/src/netbeans.c
+++ b/src/netbeans.c
@@ -99,8 +99,11 @@ netbeans_close(void)
     {
 	netbeans_send_disconnect();
 	if (nb_channel != NULL)
+	{
 	    /* Close the socket and remove the input handlers. */
 	    channel_close(nb_channel, TRUE);
+	    channel_clear(nb_channel);
+	}
 	nb_channel = NULL;
     }