Enable underscore replacement by default

Change the default for _isUnderscoreReplacementEnabled in TtsModel from false to true so underscore replacement is enabled by default in TTS behavior.

Add option to replace underscores in author names for TTS

Introduces a new setting to replace underscores with spaces in author names when generating TTS prelude. Adds a toggle in the TTS settings screen and persists the setting in the TtsModel.

# Conflicts:
#	lib/models/tts.dart
#	lib/screens/settings/tts.dart

Author: LeMyst

lib/models/tts.dart

@@ -65,6 +65,7 @@ class TtsModel extends ChangeNotifier {
   var _isBotMuted = false;
   var _isEmoteMuted = false;
   var _isPreludeMuted = false;
+  var _isUnderscoreReplacementEnabled = true;
   var _isTtsCommandEncouraged = false;
   var _speed = Platform.isAndroid ? 0.8 : 0.395;
   var _pitch = 1.0;
@@ -185,8 +186,16 @@ class TtsModel extends ChangeNotifier {
       if (text.trim().isEmpty) {
         return "";
       }
-
-      final author = model.author.displayName ?? model.author.login;
+      var author = model.author.displayName ?? model.author.login;
+      if (_isUnderscoreReplacementEnabled) {
+        author = author
+            .replaceAll("_", " ")
+            .replaceAll(RegExp(r'\s+'), ' ')
+            .trim();
+      }
+      if (!includeAuthorPrelude || isPreludeMuted) {
+        return text;
+      }
       return model.isAction
           ? l10n.actionMessage(author, text)
           : l10n.saidMessage(author, text);
@@ -385,6 +394,15 @@ class TtsModel extends ChangeNotifier {
     notifyListeners();
   }
 
+  bool get isUnderscoreReplacementEnabled {
+    return _isUnderscoreReplacementEnabled;
+  }
+
+  set isUnderscoreReplacementEnabled(bool value) {
+    _isUnderscoreReplacementEnabled = value;
+    notifyListeners();
+  }
+
   bool get isCloudTtsEnabled {
     return _isCloudTtsEnabled;
   }
@@ -582,6 +600,9 @@ class TtsModel extends ChangeNotifier {
     if (json['isPreludeMuted'] != null) {
       _isPreludeMuted = json['isPreludeMuted'];
     }
+    if (json['isUnderscoreReplacementEnabled'] != null) {
+      _isUnderscoreReplacementEnabled = json['isUnderscoreReplacementEnabled'];
+    }
     if (json['isRandomVoiceEnabled'] != null) {
       _isRandomVoiceEnabled = json['isRandomVoiceEnabled'];
     }
@@ -608,6 +629,7 @@ class TtsModel extends ChangeNotifier {
         "isEmoteMuted": isEmoteMuted,
         "isTextSimplificationEnabled": isTextSimplificationEnabled,
         "isPreludeMuted": isPreludeMuted,
+        "isUnderscoreReplacementEnabled": isUnderscoreReplacementEnabled,
         "isTtsCommandEncouraged": isTtsCommandEncouraged,
         "isRandomVoiceEnabled": isRandomVoiceEnabled,
         "language": language.languageCode,

lib/screens/settings/tts.dart

@@ -264,6 +264,13 @@ class TextToSpeechScreen extends StatelessWidget {
                 model.isPreludeMuted = value;
               },
             ),
+            SwitchListTile.adaptive(
+              title: const Text("Replace underscores with spaces in viewer names"),
+              value: model.isUnderscoreReplacementEnabled,
+              onChanged: (value) {
+                model.isUnderscoreReplacementEnabled = value;
+              },
+            ),
             SwitchListTile.adaptive(
               title: const Text("Simplify messages"),
               subtitle: const Text("Simplify punctuation, symbols, and whitespace (including muting repetitive punctuation and unsupported characters)"),