Use double spaces instead of Chatterino character when possible (#3081)

CHANGELOG.md

@@ -9,6 +9,7 @@
 - Minor: Received IRC messages use `time` message tag for timestamp if it's available. (#3021)
 - Minor: Added informative messages for recent-messages API's errors. (#3029)
 - Minor: Added section with helpful Chatterino-related links to the About page. (#3068)
+- Minor: Now uses spaces instead of magic Unicode character for sending duplicate messages (#3081)
 - Minor: Added `channel.live` filter variable (#3092)
 - Bugfix: Fixed "smiley" emotes being unable to be "Tabbed" with autocompletion, introduced in v2.3.3. (#3010)
 - Bugfix: Fixed PubSub not properly trying to resolve pending listens when the pending listens list was larger than 50. (#3037)

src/providers/twitch/TwitchChannel.cpp

@@ -375,7 +375,17 @@ void TwitchChannel::sendMessage(const QString &message)
         {
             if (parsedMessage == this->lastSentMessage_)
             {
-                parsedMessage.append(MAGIC_MESSAGE_SUFFIX);
+                auto spaceIndex = parsedMessage.indexOf(' ');
+                if (spaceIndex == -1)
+                {
+                    // no spaces found, fall back to old magic character
+                    parsedMessage.append(MAGIC_MESSAGE_SUFFIX);
+                }
+                else
+                {
+                    // replace the space we found in spaceIndex with two spaces
+                    parsedMessage.replace(spaceIndex, 1, "  ");
+                }
             }
         }
     }