Fix pasting text containing linefeeds into the chat textbox expands them to multiline although single line mode is set

indra/llui/llchatentry.cpp

@@ -268,3 +268,21 @@ void LLChatEntry::enableSingleLineMode(bool single_line_mode)
 	mPrevLinesCount = -1;
 	setWordWrap(!single_line_mode);
 }
+
+
+// <FS:Ansariel> Fix linefeed pasting
+//virtual
+void LLChatEntry::paste()
+{
+	LLTextEditor::paste();
+
+	if (mSingleLineMode)
+	{
+		S32 cursor_pos = getCursorPos();
+		LLWString content = getWText();
+		LLWStringUtil::replaceChar(content, '\n', 182);
+		setWText(content);
+		setCursorPos(cursor_pos);
+	}
+}
+// </FS:Ansariel>

indra/llui/llchatentry.h

@@ -71,6 +71,9 @@ public:
 	// <FS:Ansariel> Changed to public so we can update history when using modifier keys
 	void	updateHistory();
 
+	// <FS:Ansariel> Fix linefeed pasting
+	/*virtual*/ void	paste();
+
 private:
 
 	/**