There is a minor bug with bold text. The last character of a bold text is displayed as normal text. This is only a problem if the bold text ends with no space or carriage return.
In the exampele below the 'd' of the bold text is shown in normal font.
Nevertheless, a great tool!
Sébastien - you are using cprintf incorrectly. Firstly, the extra parameter 4 has no meaning since you are not using any printf fields (e.g. %d) in your string.
Secondly, you don't need (and actually should not use) \r - \r clears the current line to the beginning on some systems, which could explain what you are seeing.