diff --git a/app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderActivity.kt b/app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderActivity.kt
index ff897c009..e90e76bc4 100644
--- a/app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderActivity.kt
+++ b/app/src/main/java/eu/kanade/tachiyomi/ui/reader/ReaderActivity.kt
@@ -843,10 +843,11 @@ class ReaderActivity : BaseRxActivity<ReaderActivityBinding, ReaderPresenter>()
             !preferences.forceHorizontalSeekbar().get() &&
             (
                 (
-                    resources.configuration.orientation == Configuration.ORIENTATION_LANDSCAPE && preferences.landscapeVerticalSeekbar().get()) ||
+                    resources.configuration.orientation == Configuration.ORIENTATION_LANDSCAPE && preferences.landscapeVerticalSeekbar().get()
+                    ) ||
                     resources.configuration.orientation == Configuration.ORIENTATION_PORTRAIT
-                )
-            && (viewer is WebtoonViewer || viewer is VerticalPagerViewer)
+                ) &&
+            (viewer is WebtoonViewer || viewer is VerticalPagerViewer)
         ) {
             binding.readerNavVert.isVisible = true
             binding.readerNavHorz.isVisible = false
diff --git a/app/src/main/java/exh/eh/EHentaiUpdateWorker.kt b/app/src/main/java/exh/eh/EHentaiUpdateWorker.kt
index 53b5db284..f97df9d17 100644
--- a/app/src/main/java/exh/eh/EHentaiUpdateWorker.kt
+++ b/app/src/main/java/exh/eh/EHentaiUpdateWorker.kt
@@ -232,7 +232,7 @@ class EHentaiUpdateWorker : JobService() {
                 if ((new.isNotEmpty() && manga.id == acceptedRoot.manga.id) ||
                     (hasNew && updatedManga.none { it.first.id == acceptedRoot.manga.id })
                 ) {
-                    updatedManga += Pair(acceptedRoot.manga, new.toTypedArray())
+                    updatedManga += acceptedRoot.manga to new.toTypedArray()
                 }
 
                 modifiedThisIteration += acceptedRoot.manga.id!!
diff --git a/app/src/main/java/exh/util/RxUtil.kt b/app/src/main/java/exh/util/RxUtil.kt
index f64d49646..e6face8ad 100644
--- a/app/src/main/java/exh/util/RxUtil.kt
+++ b/app/src/main/java/exh/util/RxUtil.kt
@@ -25,196 +25,3 @@ fun <T> Observable<T>.melt(): Observable<T> {
     subscribe(rs)
     return rs
 }
-/*
-suspend fun <T> Single<T>.await(subscribeOn: Scheduler? = null): T {
-    return suspendCancellableCoroutine { continuation ->
-        val self = if (subscribeOn != null) subscribeOn(subscribeOn) else this
-        lateinit var sub: Subscription
-        sub = self.subscribe(
-            {
-                continuation.resume(it) {
-                    sub.unsubscribe()
-                }
-            },
-            {
-                if (!continuation.isCancelled) {
-                    continuation.resumeWithException(it)
-                }
-            }
-        )
-
-        continuation.invokeOnCancellation {
-            sub.unsubscribe()
-        }
-    }
-}
-
-suspend fun <T> PreparedOperation<T>.await(): T = asRxSingle().await()
-suspend fun <T> PreparedGetObject<T>.await(): T? = asRxSingle().await()
-
-suspend fun Completable.awaitSuspending(subscribeOn: Scheduler? = null) {
-    return suspendCancellableCoroutine { continuation ->
-        val self = if (subscribeOn != null) subscribeOn(subscribeOn) else this
-        lateinit var sub: Subscription
-        sub = self.subscribe(
-            {
-                continuation.resume(Unit) {
-                    sub.unsubscribe()
-                }
-            },
-            {
-                if (!continuation.isCancelled) {
-                    continuation.resumeWithException(it)
-                }
-            }
-        )
-
-        continuation.invokeOnCancellation {
-            sub.unsubscribe()
-        }
-    }
-}
-
-suspend fun Completable.awaitCompleted(): Unit = suspendCancellableCoroutine { cont ->
-    subscribe(
-        object : CompletableSubscriber {
-            override fun onSubscribe(s: Subscription) {
-                cont.unsubscribeOnCancellation(s)
-            }
-
-            override fun onCompleted() {
-                cont.resume(Unit)
-            }
-
-            override fun onError(e: Throwable) {
-                cont.resumeWithException(e)
-            }
-        }
-    )
-}
-
-suspend fun <T> Single<T>.await(): T = suspendCancellableCoroutine { cont ->
-    cont.unsubscribeOnCancellation(
-        subscribe(
-            object : SingleSubscriber<T>() {
-                override fun onSuccess(t: T) {
-                    cont.resume(t)
-                }
-
-                override fun onError(error: Throwable) {
-                    cont.resumeWithException(error)
-                }
-            }
-        )
-    )
-}
-
-@OptIn(InternalCoroutinesApi::class)
-suspend fun <T> Observable<T>.awaitFirst(): T = first().awaitOne()
-
-@OptIn(InternalCoroutinesApi::class)
-suspend fun <T> Observable<T>.awaitFirstOrDefault(default: T): T = firstOrDefault(default).awaitOne()
-
-@OptIn(InternalCoroutinesApi::class)
-suspend fun <T> Observable<T>.awaitFirstOrNull(): T? = firstOrDefault(null).awaitOne()
-
-@OptIn(InternalCoroutinesApi::class)
-suspend fun <T> Observable<T>.awaitFirstOrElse(defaultValue: () -> T): T = switchIfEmpty(
-    Observable.fromCallable(
-        defaultValue
-    )
-).first().awaitOne()
-
-@OptIn(InternalCoroutinesApi::class)
-suspend fun <T> Observable<T>.awaitLast(): T = last().awaitOne()
-
-@OptIn(InternalCoroutinesApi::class)
-suspend fun <T> Observable<T>.awaitSingle(): T = single().awaitOne()
-
-suspend fun <T> Observable<T>.awaitSingleOrDefault(default: T): T = singleOrDefault(default).awaitOne()
-
-suspend fun <T> Observable<T>.awaitSingleOrNull(): T? = singleOrDefault(null).awaitOne()
-
-@OptIn(InternalCoroutinesApi::class)
-private suspend fun <T> Observable<T>.awaitOne(): T = suspendCancellableCoroutine { cont ->
-    cont.unsubscribeOnCancellation(
-        subscribe(
-            object : Subscriber<T>() {
-                override fun onStart() {
-                    request(1)
-                }
-
-                override fun onNext(t: T) {
-                    cont.resume(t)
-                }
-
-                override fun onCompleted() {
-                    if (cont.isActive) cont.resumeWithException(
-                        IllegalStateException(
-                            "Should have invoked onNext"
-                        )
-                    )
-                }
-
-                override fun onError(e: Throwable) {
-          *//*
-             * Rx1 observable throws NoSuchElementException if cancellation happened before
-             * element emission. To mitigate this we try to atomically resume continuation with exception:
-             * if resume failed, then we know that continuation successfully cancelled itself
-             *//*
-                    val token = cont.tryResumeWithException(e)
-                    if (token != null) {
-                        cont.completeResume(token)
-                    }
-                }
-            }
-        )
-    )
-}
-
-internal fun <T> CancellableContinuation<T>.unsubscribeOnCancellation(sub: Subscription) =
-    invokeOnCancellation { sub.unsubscribe() }
-
-fun <T : Any> Observable<T>.asFlow(): Flow<T> = callbackFlow {
-    val observer = object : Observer<T> {
-        override fun onNext(t: T) {
-            offer(t)
-        }
-
-        override fun onError(e: Throwable) {
-            close(e)
-        }
-
-        override fun onCompleted() {
-            close()
-        }
-    }
-    val subscription = subscribe(observer)
-    awaitClose { subscription.unsubscribe() }
-}
-
-fun <T : Any> Flow<T>.asObservable(backpressureMode: Emitter.BackpressureMode = Emitter.BackpressureMode.NONE): Observable<T> {
-    return Observable.create(
-        { emitter ->
-            *//*
-         * ATOMIC is used here to provide stable behaviour of subscribe+dispose pair even if
-         * asObservable is already invoked from unconfined
-         *//*
-            val job = GlobalScope.launch(Dispatchers.Unconfined, start = CoroutineStart.ATOMIC) {
-                try {
-                    collect { emitter.onNext(it) }
-                    emitter.onCompleted()
-                } catch (e: Throwable) {
-                    // Ignore `CancellationException` as error, since it indicates "normal cancellation"
-                    if (e !is CancellationException) {
-                        emitter.onError(e)
-                    } else {
-                        emitter.onCompleted()
-                    }
-                }
-            }
-            emitter.setCancellation { job.cancel() }
-        },
-        backpressureMode
-    )
-}*/
diff --git a/app/src/main/java/exh/util/StringUtil.kt b/app/src/main/java/exh/util/StringUtil.kt
index 35f0b4ac5..32c2ab5ec 100644
--- a/app/src/main/java/exh/util/StringUtil.kt
+++ b/app/src/main/java/exh/util/StringUtil.kt
@@ -7,7 +7,7 @@ fun List<String>.dropEmpty() = filter { it.isNotEmpty() }
 private val articleRegex by lazy { "^(an|a|the) ".toRegex(RegexOption.IGNORE_CASE) }
 
 fun String.removeArticles(): String {
-    return this.replace(articleRegex, "")
+    return replace(articleRegex, "")
 }
 
 fun String.trimOrNull(): String? {