Repo created

app/proguard-rules-release.pro

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+
+# R8 usage for DAVx⁵:
+#    shrinking        yes (only in release builds)
+#    optimization     yes (on by R8 defaults)
+#      full-mode      no (see gradle.properties)
+#    obfuscation      no (open-source)
+
+-dontobfuscate
+-printusage build/reports/r8-usage.txt
+
+# keep rules
+-keep class at.bitfire.** { *; }        # all DAVx5 code is required
+-keep class org.xmlpull.** { *; }
+
+# Additional rules which are now required since missing classes can't be ignored in R8 anymore.
+# [https://developer.android.com/build/releases/past-releases/agp-7-0-0-release-notes#r8-missing-class-warning]
+-dontwarn org.xmlpull.**
+
+# dnsjava
+-dontwarn com.sun.jna.**
+-dontwarn lombok.**
+-dontwarn javax.naming.NamingException
+-dontwarn javax.naming.directory.**
+-dontwarn sun.net.spi.nameservice.NameService
+-dontwarn sun.net.spi.nameservice.NameServiceDescriptor
+-dontwarn org.xbill.DNS.spi.DnsjavaInetAddressResolverProvider
+
+# okhttp
+# https://github.com/bitfireAT/davx5/issues/711 / https://github.com/square/okhttp/issues/8574
+-keep class okhttp3.internal.idn.IdnaMappingTable { *; }
+-keep class okhttp3.internal.idn.IdnaMappingTableInstanceKt{ *; }