- From: Peter F. Patel-Schneider <pfps@research.bell-labs.com>
- Date: Wed, 24 Oct 2007 12:52:37 -0400 (EDT)
- To: mak@aifb.uni-karlsruhe.de
- Cc: public-owl-wg@w3.org
From: Markus Krötzsch <mak@aifb.uni-karlsruhe.de> Subject: Re: Agenda for teleconference Wednesday October 24, 2007 Date: Wed, 24 Oct 2007 18:40:15 +0200 > On Mittwoch, 24. Oktober 2007, Peter F. Patel-Schneider wrote: > > From: "Sandro Hawke" <sandro@w3.org> > > Subject: Re: Agenda for teleconference Wednesday October 24, 2007 > > Date: Tue, 23 Oct 2007 13:08:56 -0400 > > > > > "Peter F. Patel-Schneider" <pfps@research.bell-labs.com> writes: > > > > From: Ian Horrocks <ian.horrocks@comlab.ox.ac.uk> > > > > Subject: Agenda for teleconference Wednesday October 24, 2007 > > > > Date: Tue, 23 Oct 2007 15:52:36 +0100 > > > > > > > > [...] > > > > > > > > > o PROPOSED: Documents to be edited using wiki markup > > > > > facilities (templates, tex math, etc). Revisit if there > > > > > are problems. > > > > > > > > [...] > > > > > > > > Real TeX, with everything? Just TeX? I would miss LaTeX math stuff. > > > > Is there a compact document on the capabilities we would be getting? > > > > > > AMS LaTeX, as per: > > > http://meta.wikimedia.org/wiki/Help:Displaying_a_formula > > > > That page says: > > > > MediaWiki uses a subset of TeX markup, including some extensions > > from LaTeX and AMSLaTeX, for mathematical formulae. > > I think there is a whitelist of commands that are allowed in the wiki. This > is, I think, a security issue (since TeX is a complex programming language > that may have undesired side-effects when running user-built programs on the > server). Sure, there may have to be some limitations. What are they? > > It generates > > either PNG images or simple HTML markup, depending on user > > preferences and the complexity of the expression. In the future, > > as more browsers are smarter, it will be able to generate > > enhanced HTML or even MathML in many cases. (See blahtex for > > information about current work on adding MathML support.) > > > > More precisely, MediaWiki filters the markup through Texvc, > > which in turn passes the commands to TeX for the actual > > rendering. Thus, only a limited part of the full TeX language is > > supported; see below for details. > > > > From this I take it that there are significant restrictions. The web > > page describing the language accepted prints as 19 pages. > > > > I don't like the part about displaying as "PNG images". This makes > > searching very difficult. > > AFAIK the wiki builds its search index on the input text, not on the output > HTML. Moreover, all the PNGs will have the (La)TeX code as an alternative > text label (so that text-browsers can read stuff as well, and smart web > searches may index it). Well, I don't see how to get firefox to look for all uses of "a" in a document that includes texvc. In fact, the situation is precisely the worst of all worlds: *some* uses of "a" in the texvc output are included, which can give rise to the the expectation that *all* uses of "a" in the document are included. For an example of how the search fails try searching for a in http://meta.wikimedia.org/wiki/Help:Displaying_a_formula, and then highlight all matches. > > I don't see anything about user-defined commands on the page, from which > > I take it that they are not allowed. This is a very serious lack! Of > > course, HTML also has a problem here. > > This might be easy to fix, if we have a *fixed* set of common user-defined > add-ons/packages to use in the wiki tex. We basically can change the preamble > of the TeX that is used to make the formulae as we like. I do not know > whether and how this could be done through the wiki, though. I wonder whether \newcommand is on the whitelist. > -- Markus > > > > > [...] > > > > > -- Sandro peter
Received on Wednesday, 24 October 2007 17:01:03 UTC