From eabc327edcea85b39c729255db903cdabf7b1f27 Mon Sep 17 00:00:00 2001
From: Louis Pontoise <louis.pontoise@amadeus.com>
Date: Mon, 11 Nov 2019 15:12:37 +0900
Subject: [PATCH] fix: handle preference files with deprecated keys

---
 alt-tab-macos/logic/Preferences.swift | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/alt-tab-macos/logic/Preferences.swift b/alt-tab-macos/logic/Preferences.swift
index a781f434..7fd7b87a 100644
--- a/alt-tab-macos/logic/Preferences.swift
+++ b/alt-tab-macos/logic/Preferences.swift
@@ -67,7 +67,8 @@ class Preferences {
             }
             rawValues = try loadFromDisk(userFile)
             if preferencesExist {
-                rawValues = defaults.merging(rawValues) { (_, new) in new }
+                let compatiblePreferences = rawValues.filter { defaults[$0.key] != nil }
+                rawValues = defaults.merging(compatiblePreferences) { (_, new) in new }
             }
             try rawValues.forEach { try updateAndValidateFromString($0.key, $0.value) }
             if preferencesExist {