Fix AltGr for a few more keys in IE and Edge

Some keys apparently send 'Unidentified' rather than an unshifted value.
Make sure those are also handled. Examples are \ and | on a Swedish
keyboard.

1 files changed, 10 insertions, 3 deletions

diff --git a/core/input/util.js b/core/input/util.js
index b0e8855..d93aafa 100644
--- a/core/input/util.js
+++ b/core/input/util.js
@@ -108,9 +108,16 @@ export function getKey(evt) {
             return 'Delete';
         }
 
-        // IE and Edge have broken handling of AltGraph so we cannot
-        // trust them for printable characters
-        if ((evt.key.length !== 1) || (!browser.isIE() && !browser.isEdge())) {
+        // IE and Edge need special handling, but for everyone else we
+        // can trust the value provided
+        if (!browser.isIE() && !browser.isEdge()) {
+            return evt.key;
+        }
+
+        // IE and Edge have broken handling of AltGraph so we can only
+        // trust them for non-printable characters (and unfortunately
+        // they also specify 'Unidentified' for some problem keys)
+        if ((evt.key.length !== 1) && (evt.key !== 'Unidentified')) {
             return evt.key;
         }
     }