Warning for trigraphs in comment?

[Paul Koning]

>>>>> "Zack" == Zack Weinberg <zack@codesourcery.com> writes:

 Zack> Paul Koning <pkoning@equallogic.com> writes:
 >>>>>>> "Gabriel" == Gabriel Dos Reis <gdr@integrable-solutions.net>
 >>>>>>> writes:
 >> >> The patch is not appropriate for 3.3.  >> The real fix is to
 >> remove trigraphs from the standard.
 >> 
 Gabriel> Oh, I'm all for removing trigraphs, digraphs, quadrigraphs
 Gabriel> and whatevergraphs -- I've also thought they were mistakes.
 Gabriel> But, in fact, I'm skeptical that would ever happen.
 >> I like the notion too.  Trigraphs are an utter misfeature.
 >> 
 >> Would it make sense to have the lexer ignore trigraphs (i.e., just
 >> treat ??/ as three characters) unless specifically enabled with
 >> -fenable-trigraphs?  In the unlikely case that anyone actually
 >> uses trigraphs, this would enable them to continue doing so.

 Zack> GCC has done this for decades.  See the documentation of the
 Zack> -trigraphs option.

Oh.  So it looks like what's needed is to have -ansi NOT imply
-trigraphs.

	paul