From cd06e616a32206adca1fce2b648e3ea9bbbe4f85 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Ville=20Skytt=C3=A4?= <ville.skytta@iki.fi>
Date: Sun, 13 Mar 2022 14:49:28 +0200
Subject: model/obj: add mtllib and Blender comment based magic

Blender produced obj files, such as the one in our test suite, can have
a first line comment like "# Blender v2.82 (sub 7) OBJ File: ''"
---
 data/freedesktop.org.xml.in | 4 ++++
 tests/mime-detection/list   | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/data/freedesktop.org.xml.in b/data/freedesktop.org.xml.in
index 8edf4248..ae05d58a 100644
--- a/data/freedesktop.org.xml.in
+++ b/data/freedesktop.org.xml.in
@@ -5886,6 +5886,10 @@ command to generate the output files.
   <mime-type type="model/obj">
     <comment>OBJ 3D model</comment>
     <sub-class-of type="text/plain"/>
+    <magic priority="50">
+      <match type="string" value=" OBJ File: '" offset="0:64"/>
+      <match type="string" value="mtllib " offset="0:256"/>
+    </magic>
     <glob pattern="*.obj"/>
   </mime-type>
   <mime-type type="model/mtl">
diff --git a/tests/mime-detection/list b/tests/mime-detection/list
index 3cbfe16c..d2aed529 100644
--- a/tests/mime-detection/list
+++ b/tests/mime-detection/list
@@ -852,7 +852,7 @@ ascii.stl model/stl
 test.gcode text/x.gcode ox
 20mm_Box.gx text/x-gcode-gx
 # Converted from binary.stl with Blender
-test.obj model/obj xxx
+test.obj model/obj x
 test.mtl model/mtl
 
 # Virtualization disk images
-- 
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