Add a note for Thunderbird users to the Developer Policy.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@52797 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/docs/DeveloperPolicy.html b/docs/DeveloperPolicy.html
index 144c55ac0d8a3ca7b4e1981a461f45993355ff8e..4ab0fe42bece30549d82847ac8d8c3deffce1faf 100644 (file)
--- a/docs/DeveloperPolicy.html
+++ b/docs/DeveloperPolicy.html
@@ -116,6 +116,15 @@
   <em>attachment</em> to the message, not embedded into the text of the
   message.  This ensures that your mailer will not mangle the patch when it 
   sends it (e.g. by making whitespace changes or by wrapping lines).</p>
+  
+  <p><em>For Thunderbird users:</em> Before submitting a patch, please open 
+  <em>Preferences &#8594; Advanced &#8594; General &#8594; Config Editor</em>,
+  find the key <tt>mail.content_disposition_type</tt>, and set its value to
+  <tt>1</tt>. Without this setting, Thunderbird sends your attachment using
+  <tt>Content-Disposition: inline</tt> rather than <tt>Content-Disposition:
+  attachment</tt>. Apple Mail gamely displays such a file inline, making it
+  difficult to work with for reviewers using that program.</p>
+</p>
 </div>
 
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