shithub: vdiff

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exit if diff is empty

--- a/vdiff.c

+++ b/vdiff.c

@@ -272,6 +272,10 @@

 	int e, n;

 	parse(0);

+	if(lcount==0){

+		fprint(2, "no diff\n");

+		exits(nil);

+	}

 	if(initdraw(nil, nil, "vdiff")<0)

 		sysfatal("initdraw: %r");

 	initcols();