From 69611ab325034639bd11c28ddd60bfce770ee449 Mon Sep 17 00:00:00 2001
From: Ben Lubar <ben.lubar@gmail.com>
Date: Sun, 9 Feb 2020 18:05:09 -0600
Subject: [PATCH] exit if a fatal startup error is encountered while in
 headless mode (#1491)

---
 library/Core.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/library/Core.cpp b/library/Core.cpp
index 380f37965..00a8879fc 100644
--- a/library/Core.cpp
+++ b/library/Core.cpp
@@ -1579,6 +1579,12 @@ void Core::fatal (std::string output)
 #else
     cout << "DFHack fatal error: " << out.str() << std::endl;
 #endif
+
+    bool is_headless = bool(getenv("DFHACK_HEADLESS"));
+    if (is_headless)
+    {
+        exit('f');
+    }
 }
 
 std::string Core::getHackPath()