[Docutils-develop] Address nodes

[Felix W. <Fel...@gm...>]

The rendering of address nodes is often messed up because they are
enclosed in <pre> tags:

http://docutils.sf.net/tmp/address-konqueror-2006-01-22.png
http://docutils.sf.net/tmp/address-firefox-2006-01-22.png
http://docutils.sf.net/tmp/address-ie-2006-01-22.png

(Firefox and IE have been configured to use serifless fonts by default.)

There are also problems with W3M (additional blank line) and Lynx
(additional blank lines, dedentation):

    $ w3m -dump standalone_rst_html4css1.html | head -n 15
    Document header
    ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

    reStructuredText Test Document

    Examples of Syntax Constructs

       Author:    David Goodger
                  123 Example Street
      Address:    Example, EX  Canada
                  A1B 2C3

      Contact:    go...@us...
                  Me
      Authors:    Myself

    $ lynx -dump standalone_rst_html4css1.html | head -n 15
       Document header
         _________________________________________________________________

    reStructuredText Test Document

    Examples of Syntax Constructs

       Author: David Goodger
       Address:
    123 Example Street
    Example, EX  Canada
    A1B 2C3

       Contact: [1]go...@us...
       Authors: Me

So I changed the HTML writer to omit the <pre> tags for address nodes.
Text nodes are now rendered with space preserved (using "&nbsp;" and
"<br />") if any parent has the xml:space="preserved" attribute set.

This means that all literal blocks are now rendered on a single lines.
That's a trade-off I'm willing to take for simplicity, though.

If there are no objections, I'll back-port the revision to 0.4.

-- 
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"the number of contributors [...] is strongly and inversely correlated with the
number of hoops each project makes a contributing user go through."      -- ESR