Using this bug to track interest in implementing protocol handlers defined within the Web App Manifest. Explainer: https://github.com/MicrosoftEdge/MSEdgeExplainers/blob/master/URLProtocolHandler/explainer.md Feature PR to Web App Manifest: https://github.com/w3c/manifest/pull/863 Discussion: https://github.com/w3c/manifest/issues/846
<rdar://problem/62866037>