rename w30 to webxdc

test-data/message/webxdc_good_extension.eml

@@ -0,0 +1,29 @@
+Subject: webxdc object attached
+Message-ID: 12345@example.org
+Date: Fri, 03 Dec 2021 10:00:27 +0000
+To: alice@example.org
+From: bob@example.org
+Chat-Version: 1.0
+Content-Type: multipart/mixed; boundary="==BREAK=="
+
+
+--==BREAK==
+Content-Type: text/plain; charset=utf-8
+
+webxdc with good extension;
+the mimetype is ignored then,
+content is checked.
+
+--==BREAK==
+Content-Type: text/html
+Content-Disposition: attachment; filename=minimal.xdc
+Content-Transfer-Encoding: base64
+
+UEsDBBQAAgAIAFJqnVOItjSofAAAALwAAAAKABwAaW5kZXguaHRtbFVUCQADG1LMYV1SzGF1eAsAAQ
+T1AQAABBQAAACzUXTxdw6JDHBVyCjJzbHjsoFQCgo2SfkplSCGgkJJanGJIphlU5xclFlQAhFWUEjJ
+Ty7NTc0r0SsvyixJ1VAqyU8EqlTStIYo1kdWbZOXj6o5uiQjsxhodkWJQnFGfmlOikJefolCUiqIV5
+4XCzUCWZeNPsRNNvoQRwIAUEsBAh4DFAACAAgAUmqdU4i2NKh8AAAAvAAAAAoAGAAAAAAAAQAAAKSB
+AAAAAGluZGV4Lmh0bWxVVAUAAxtSzGF1eAsAAQT1AQAABBQAAABQSwUGAAAAAAEAAQBQAAAAwAAAAA
+AA
+
+--==BREAK==--