From 806b8a2f36ea20560f136f246d21824e62073b84 Mon Sep 17 00:00:00 2001
From: John Ellson <john.ellson@comcast.net>
Date: Sun, 4 Dec 2016 14:29:23 -0500
Subject: [PATCH] improve fix for #1175

---
 cmd/dot/dot.c     | 3 +--
 lib/gvc/gvevent.c | 4 ++--
 2 files changed, 3 insertions(+), 4 deletions(-)

diff --git a/cmd/dot/dot.c b/cmd/dot/dot.c
index 5a738466c..0bb88103e 100644
--- a/cmd/dot/dot.c
+++ b/cmd/dot/dot.c
@@ -188,13 +188,12 @@ int main(int argc, char **argv)
 	    }
 	    gvLayoutJobs(Gvc, G);  /* take layout engine from command line */
 	    gvRenderJobs(Gvc, G);
+            gvFinalize(Gvc);
 	    r = agreseterrors();
 	    rc = MAX(rc,r);
 	    prev = G;
 	}
     }
-    gvFinalize(Gvc);
-    
     r = gvFreeContext(Gvc);
     return (MAX(rc,r));
 }
diff --git a/lib/gvc/gvevent.c b/lib/gvc/gvevent.c
index b116fcfa0..d4a000f1f 100644
--- a/lib/gvc/gvevent.c
+++ b/lib/gvc/gvevent.c
@@ -576,8 +576,7 @@ static void gvevent_read (GVJ_t * job, const char *filename, const char *layout)
 
     gvc = job->gvc;
     if (!filename) {
-	g = agopen("G", Agdirected, NIL(Agdisc_t *));
-	job->output_filename = "new.gv";
+	g = agread(stdin,NIL(Agdisc_t *));  // continue processing stdin
     }
     else {
 	f = fopen(filename, "r");
@@ -586,6 +585,7 @@ static void gvevent_read (GVJ_t * job, const char *filename, const char *layout)
 	g = agread(f,NIL(Agdisc_t *));
 	fclose(f);
     }
+
     if (!g)
 	return;   /* FIXME - need some error handling */
 
-- 
2.40.0