From 4506064aa689d46f0e24a4b39d5de11aa10ab3d9 Mon Sep 17 00:00:00 2001
From: Matthew Chen <charlesmchen@gmail.com>
Date: Mon, 8 May 2017 15:50:06 -0400
Subject: [PATCH] =?UTF-8?q?Prefer=20to=20determine=20an=20attachment?=
 =?UTF-8?q?=E2=80=99s=20file=20extension=20for=20its=20file=20name=20if=20?=
 =?UTF-8?q?possible.?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

// FREEBIE
---
 Signal/src/ViewControllers/SignalAttachment.swift | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Signal/src/ViewControllers/SignalAttachment.swift b/Signal/src/ViewControllers/SignalAttachment.swift
index 3c30c0e40..4d78694ac 100644
--- a/Signal/src/ViewControllers/SignalAttachment.swift
+++ b/Signal/src/ViewControllers/SignalAttachment.swift
@@ -216,6 +216,12 @@ class SignalAttachment: NSObject {
     // Returns the file extension for this attachment or nil if no file extension
     // can be identified.
     var fileExtension: String? {
+        if let filename = filename {
+            let fileExtension = (filename as NSString).pathExtension
+            if fileExtension.characters.count > 0 {
+                return fileExtension
+            }
+        }
         if dataUTI == SignalAttachment.kOversizeTextAttachmentUTI {
             return "txt"
         }