Fix compose autocomplete suggestions not displaying

c737354ed3 was overzealous

Tusker/Screens/Compose/ComposeContentWarningTextField.swift

@@ -32,8 +32,12 @@ struct ComposeContentWarningTextField: UIViewRepresentable {
     }
     
     func updateUIView(_ uiView: UITextField, context: Context) {
+        if context.coordinator.skipSettingTextOnNextUpdate {
+            context.coordinator.skipSettingTextOnNextUpdate = false
+        } else {
             uiView.text = text
         }
+    }
     
     func makeCoordinator() -> Coordinator {
         return Coordinator()
@@ -44,6 +48,8 @@ struct ComposeContentWarningTextField: UIViewRepresentable {
         var text: Binding<String>!
         var uiState: ComposeUIState!
         
+        var skipSettingTextOnNextUpdate = false
+        
         @objc func didChange(_ textField: UITextField) {
             text.wrappedValue = textField.text ?? ""
         }
@@ -57,6 +63,12 @@ struct ComposeContentWarningTextField: UIViewRepresentable {
             updateAutocompleteState(textField: textField)
         }
         
+        func textFieldDidChangeSelection(_ textField: UITextField) {
+            // see MainComposeTextView.Coordinator.textViewDidChangeSelection(_:)
+            skipSettingTextOnNextUpdate = true
+            self.updateAutocompleteState(textField: textField)
+        }
+        
         func autocomplete(with string: String) {
             guard let textField = textField,
                   let text = textField.text,

Tusker/Screens/Compose/MainComposeTextView.swift

@@ -135,7 +135,11 @@ struct MainComposeWrappedTextView: UIViewRepresentable {
     }
     
     func updateUIView(_ uiView: UITextView, context: Context) {
+        if context.coordinator.skipSettingTextOnNextUpdate {
+            context.coordinator.skipSettingTextOnNextUpdate = false
+        } else {
             uiView.text = text
+        }
         
         if let visibilityButton = visibilityButton {
             visibilityButton.image = UIImage(systemName: visibility.imageName)
@@ -199,6 +203,8 @@ struct MainComposeWrappedTextView: UIViewRepresentable {
         var uiState: ComposeUIState
         var caretScrollPositionAnimator: UIViewPropertyAnimator?
         
+        var skipSettingTextOnNextUpdate = false
+        
         init(text: Binding<String>, uiState: ComposeUIState, didChange: @escaping (UITextView) -> Void) {
             self.text = text
             self.didChange = didChange
@@ -258,6 +264,14 @@ struct MainComposeWrappedTextView: UIViewRepresentable {
             updateAutocompleteState()
         }
         
+        func textViewDidChangeSelection(_ textView: UITextView) {
+            // Setting the text view's text causes it to move the cursor to the end (though only
+            // when the text contains an emoji :/), so skip setting the text on the next SwiftUI update
+            // that's triggered by setting the autocomplete state.
+            skipSettingTextOnNextUpdate = true
+            self.updateAutocompleteState()
+        }
+        
         func autocomplete(with string: String) {
             guard let textView = textView,
                   let text = textView.text,