IssueTracker

Component used: Navigation
Version used: 1.0.0-alpha06
Devices/Android versions reproduced on: Android 8.1.0, Samsung Galaxy J5 (I don't think it's device related)

Navigation library doesn't handle deep links properly when there are 2 deep links registered and the second one is an "extension" of the previous one. Let me give a simplified example to make it more clear:

 <fragment android:name="com.example.EventFragment">

        <argument
            android:name="eventId"
            app:argType="string" />

            <action
                android:id="@+id/exhibitorDetails"
                app:destination="@id/exhibitorDetails" />

        <deepLink app:uri="example://events/{eventId}" />

</fragment>

<activity android:id="@+id/exhibitorDetails"
        android:name="com.example.ExhibitorsActivity">
        <!-- I know, not a single Activity app. But that's the case. -->

        <argument
            android:name="exhibitorId"
            app:argType="string" />

        <deepLink app:uri="example://events/{eventId}/exhibitors/{exhibitorId}" />

</activity>

When I use a link: example://events/event123/exhibitors/exhibitor123 I expect navigation library to navigate to an ExhibitorsActivity. Instead, it navigates to EventFragment. Furthermore, an eventId passed to a fragment is invalid, in this case, it's: "event123/exhibitors/exhibitor123".

I believe it's a bug of regex: in my example, passed link matches both regexes: example://events/{eventId} and example://events/{eventId}/exhibitors/{exhibitorId}.