[Haskell-cafe] Re: ANNOUNCE: graphviz 2999.9.0.0

Ivan Miljenovic ivan.miljenovic at gmail.com
Mon Apr 26 09:54:23 EDT 2010

A few things I forgot to mention in my haste to get this out:

1) I was planning on having a tutorial-style blog post where I'd use
graphviz to parse an manipulate the output "ghc-pkg dot"; however I've
been busier than I expected recently and figured it'd be better to get
this release out and do this later.

2) The website was developed with the help of John MacFarlane; at the
moment I'm using the CSS he uses for Pandoc's homepage, but I plan on
updating that during the week (again, better to get it out now and fix
it later).

And with that, I need to sleep.  Having a public holiday to get this
finished in was nice, but it didn't help with my sleep deprivation :s

On 26 April 2010 23:46, Ivan Lazar Miljenovic <ivan.miljenovic at gmail.com> wrote:
> I'm pleased to announce the latest version of my graphviz library that
> provides Haskell bindings to the Graphviz graph visualisation suite.
> There are numerous changes in this release, the most important of which
> are:
> * graphviz now has an FAQ and an improved README as well as its own
>  homepage: http://projects.haskell.org/graphviz/ (as prompted by Eric
>  Kow).
> * Add support for record labels; values are automatically
>  escaped/unescaped.  The `Record` and `MRecord` shapes have been
>  added for use with these labels.  Requested by Minh Thu and Eric
>  Kow.
> * Add support for HTML-like values (this replaces the wrong and
>  completely broken URL datatype).  Strings are automatically
>  escaped/unescaped.
> * Various parsing improvements (including a slight parsing speed
>  increase!).
> In particular, graphviz is now able to parse almost all Dot graphs found
> on my system (including samples shipped with Graphviz, Linux kernel
> documentation and various other package documentations).  A list of the
> breakages and why:
> * /usr/share/sgml/docbook/xsl-stylesheets/roundtrip/template.dot seems
>  to be a binary file and thus can't be read.
> * /usr/share/graphviz/graphs/directed/Latin1.gv uses Latin1 encoding; at
>  the moment graphviz uses the system's locale encoding (or whatever GHC
>  < 6.10 defaults to).
> * /usr/share/doc/boost-*/html/libs/graph/example/graphviz_test.dot
>  (various boost versions) has subgraphs in edges; graphviz currently
>  can't cope with these.
> * /usr/src/linux-2.6.33-gentoo-r1/Documentation/blockdev/drbd/drbd-connection-state-overview.dot
>  uses incorrect syntax for the "minlen" attribute (it is meant to be an
>  integer but actually contains a floating point value).
> The plans for the next release (which I don't plan on even starting for
> a while) are to focus on improving printing and parsing performance,
> using a state-based printer and parser (as part of Dot syntax is
> state-based) and force usage of UTF-8 (via text or utf8-string).
> --
> Ivan Lazar Miljenovic
> Ivan.Miljenovic at gmail.com
> IvanMiljenovic.wordpress.com

Ivan Lazar Miljenovic
Ivan.Miljenovic at gmail.com

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