Changed rules to keep in line with actual markdown. Although Tox is marketed somewhat as a Skype-replacement, that doesn't mean we have to break compatibility with the rest of the web.

src/chatlog/chatmessage.cpp

@@ -187,9 +187,9 @@ QString ChatMessage::detectMarkdown(const QString &str)
 
     // Create regex for certain markdown syntax
     QRegExp exp("(\\*\\*)([^\\*\\*]{2,})(\\*\\*)"   // Bold    **text**
-                "|(\\*)([^\\*]{2,})(\\*)"           // Bold *text*
+                "|(\\*)([^\\*]{2,})(\\*)"           // Italics *text*
                 "|(\\_)([^\\_]{2,})(\\_)"           // Italics _text_
-                "|(\\_\\_)([^\\_\\_]{2,})(\\_\\_)"  // Italics __text__
+                "|(\\_\\_)([^\\_\\_]{2,})(\\_\\_)"  // Bold    __text__
                 "|(\\-)([^\\-]{2,})(\\-)"           // Underline  -text-
                 "|(\\~)([^\\~]{2,})(\\~)"           // Strike  ~text~
                 "|(\\~~)([^\\~\\~]{2,})(\\~~)"      // Strike  ~~text~~
@@ -225,12 +225,12 @@ QString ChatMessage::detectMarkdown(const QString &str)
             // Match captured string to corresponding md format
             if (exp.cap(1) == "**") // Bold **text**
                 htmledSnippet = QString(" <b>%1</b> ").arg(snippet.mid(mul,snippet.length()-2*mul));
-            else if (exp.cap(4) == "*" && snippet.length() > 2) // Bold *text*
-                htmledSnippet = QString(" <b>%1</b> ").arg(snippet.mid(mul/2,snippet.length()-mul));
+            else if (exp.cap(4) == "*" && snippet.length() > 2) // Italics *text*
+                htmledSnippet = QString(" <i>%1</i> ").arg(snippet.mid(mul/2,snippet.length()-mul));
             else if (exp.cap(7) == "_" && snippet.length() > 2) // Italics _text_
                 htmledSnippet = QString(" <i>%1</i> ").arg(snippet.mid(mul/2,snippet.length()-mul));
-            else if (exp.cap(10) == "__"&& snippet.length() > 4) // Italics __text__
-                htmledSnippet = QString(" <i>%1</i> ").arg(snippet.mid(mul,snippet.length()-2*mul));
+            else if (exp.cap(10) == "__"&& snippet.length() > 4) // Bold __text__
+                htmledSnippet = QString(" <b>%1</b> ").arg(snippet.mid(mul,snippet.length()-2*mul));
             else if (exp.cap(13) == "-" && snippet.length() > 2) // Underline -text-
                 htmledSnippet = QString(" <u>%1</u> ").arg(snippet.mid(mul/2,snippet.length()-mul));
             else if (exp.cap(16) == "~" && snippet.length() > 2) // Strikethrough ~text~