Hello all,
  I am trying to write a parser for web browser called "w3" it is 
distributed with emacsen, but the development work on it is now moribund.
While looking at the parser's code(it was last modified in 1996) I saw 
lot of hacks for dealing with SGML.

Are there still lot of legacy web pages out there which uses SGML?

Should I retain support for SGML or remove it(doing so will help the 
parser in speed as well as keeping the code simple)? And speed is a big 
concern for this browser.

At one point of time I was also contemplating making a parser just good 
enough for eating XHTML 2.0, but then thought XHTML 2.0 is hardly used 
by anyone, and so I should support HTML 4.1. Any opinions on this are 
also welcome.


Thanks in advance.
-- 
Surendra Singhi
www.public.asu.edu/~sksinghi/

"O thou my friend! The prosperity of Crime is like unto the lightning, 
whose traitorous brilliancies embellish the atmosphere but for an 
instant, in order to hurl into death's very depths the luckless one they 
have dazzled." -- Marquis de Sade