From cffb29c9195e6e80e51105e56d7a67d43a36230a Mon Sep 17 00:00:00 2001
From: Anmol Sethi <anmol@terrastruct.com>
Date: Sun, 18 Dec 2022 10:48:57 -0800
Subject: [PATCH] d2: Add trailing newline to svg output

The convention. Also makes log messages clearer when input/output is -
as without the newline, you get this occasionally:

</style><style type="text/css"><![CDATA[]]></style></svg>success: successfully compiled - to -
---
 main.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/main.go b/main.go
index f37c40c0a..ce2af7899 100644
--- a/main.go
+++ b/main.go
@@ -243,6 +243,10 @@ func compile(ctx context.Context, ms *xmain.State, plugin d2plugin.Plugin, pad,
 		if err != nil {
 			return svg, false, err
 		}
+	} else {
+		if len(out) > 0  && out[len(out)-1] != '\n' {
+			out = append(out, '\n')
+		}
 	}
 
 	err = ms.WritePath(outputPath, out)