From e3887446ed1a228944310cb083b72eb4c72e3622 Mon Sep 17 00:00:00 2001
From: Allison Reid <root@cooltrainer.org>
Date: Wed, 9 Feb 2022 21:16:51 -0800
Subject: `audio/x-wav`: Add missing sub-class relationship with
 `application/x-riff`

Citations:

- IBM/Microsoft Multimedia Programming Interface and Data Specifications 1.0
  http://www-mmsp.ece.mcgill.ca/Documents/AudioFormats/WAVE/Docs/riffmci.pdf#page=36

  "Most of these file formats are based on the Resource Interchange File Format (RIFF).
   This chapter describes the following file formats:
     Waveform Audio File Format (WAVE)"

- https://docs.microsoft.com/en-us/windows/win32/xaudio2/resource-interchange-file-format--riff-

  "This overview describes the Resource Interchange File Format (RIFF),
   which is used in .wav files."

- Library of Congress
  https://www.loc.gov/preservation/digital/formats/fdd/fdd000001.shtml

  "Subtype of:  RIFF, Resource Interchange File Format (RIFF)"

- Any WAVE file :)

  ```
  [okeeblow@emi#shared-mime-info] xxd -l 16 tests/mime-detection/test.wav
  00000000: 5249 4646 ac58 0100 5741 5645 666d 7420  RIFF.X..WAVEfmt
  ```
---
 data/freedesktop.org.xml.in | 1 +
 1 file changed, 1 insertion(+)

diff --git a/data/freedesktop.org.xml.in b/data/freedesktop.org.xml.in
index ac5c2afa..53c6de8f 100644
--- a/data/freedesktop.org.xml.in
+++ b/data/freedesktop.org.xml.in
@@ -4776,6 +4776,7 @@ command to generate the output files.
     <comment>WAV audio</comment>
     <alias type="audio/wav"/>
     <alias type="audio/vnd.wave"/>
+    <sub-class-of type="application/x-riff"/>
     <magic>
       <match type="string" value="WAVE" offset="8"/>
       <match type="string" value="WAV " offset="8"/>
-- 
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