From 6c713332b96753d047b206c35a2ce05e7223ddf5 Mon Sep 17 00:00:00 2001
From: jahorton <jahorton@sil.org>
Date: Mon, 30 Nov 2020 14:42:55 +0700
Subject: [PATCH] fix(ios): package-internal links should be considered
 internal

---
 .../KeymanEngine/Classes/PackageWebViewController.swift    | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/ios/engine/KMEI/KeymanEngine/Classes/PackageWebViewController.swift b/ios/engine/KMEI/KeymanEngine/Classes/PackageWebViewController.swift
index 4055f8d3d7..58697f97e4 100644
--- a/ios/engine/KMEI/KeymanEngine/Classes/PackageWebViewController.swift
+++ b/ios/engine/KMEI/KeymanEngine/Classes/PackageWebViewController.swift
@@ -90,7 +90,12 @@ class PackageWebViewController: UIViewController, WKNavigationDelegate {
                decidePolicyFor navigationAction: WKNavigationAction,
                decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
     if let link = navigationAction.request.url {
-      if UniversalLinks.isExternalLink(link) {
+      if link.path.hasPrefix(self.package.sourceFolder.path) {
+        // Links from within the package will show up as 'external' in the condition below!
+        // So, we check against package-internal links first.
+        decisionHandler(.allow)
+        return
+      } else if UniversalLinks.isExternalLink(link) {
         decisionHandler(.cancel)
 
         // Kick this link out to an external Safari process.