From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <9d83eef5e63fdea20a46c54ce6cf0a27@proxima.alt.za>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] Re: Building GCC
Date: Thu, 24 Jan 2008 19:21:19 +0200
From: lucio@proxima.alt.za
In-Reply-To: <140e7ec30801240159p6f0aab44s6d0b72611f3b346d@mail.gmail.com>
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>  A modern web browser is more like a VM. But instead of having some
> sort of sane rendering backend it uses HTML/CSS. Javascript/plugins
> serve as the "userspace" code, if you will. HTTP exports the local
> rendering interface and cpu to remote machines.

I haven't looked at any implementation of an HTML rendering engine, so
I may be totally off the mark, but presumably there is merit in the
ability to take a textual source and turn it into a two-dimensional
graphical representation of the intended document?

Now, HTML may be a poor realisation of the language such a rendering
engine would interpret, but it must be possible to design a mark-up
language (and let's not let "mark-up" or "language" condition our
thinking) that can be used as the human-editable source for a
graphical production.  I don't suggest that there is a "perfect" such
notation, merely that we have had enough experience with word
processors (a long list), text processors (TeX, troff, etc.) and page
layout languages (Postscript, are there any other interesting ones?)
to be able to explore the next generation, together with the tools
they would need to manipulate them.

Given a rendering engine with a powerful and hopefully flexible input
language, one may be able to write compilers or interpreters for the
more popular brands.  Or am I missing the wood for the trees?

If I'm not, I propose that Plan 9 could provide the platform for such
an engine as well as for the various interpreters.  Designing a useful
graphical description language is no small project, but surely there
is some prior art out there than one can draw on?

++L