bug#12189: Italic support in terminal

[koral]

Hello,

I'm using emacs in a terminal (rxvt-unicode) and I'm surprised to notice that, 
although bold and underlined characters are supported, italic ones aren't.
As far as I remember, that's just a distinct escape sequence to parse, doesn't 
sound like a big deal.
Would emacs' maintainers be so kind as to include support for italic fonts in 
terminal emacs, or otherwise explain why this isn't worth the effort ?

Kind regards.

-- 
koral