<p></p>
<p><b>@gravitystorm</b> commented on this pull request.</p>

<hr>

<p>In <a href="https://github.com/openstreetmap/openstreetmap-website/pull/2597#discussion_r412918711">app/models/trace.rb</a>:</p>
<pre style='color:#555'>> @@ -117,7 +117,7 @@ def trace_name
   end
 
   def mime_type
-    filetype = `/usr/bin/file -Lbz #{trace_name}`.chomp
+    filetype = Open3.capture2("/usr/bin/file", "-Lbz", trace_name)[0].chomp
</pre>
<p>Me too! I'm not sure why I overlooked this.</p>

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