[tex4ht] Recent updates

Wed Apr 12 21:44:20 CEST 2017

Hi all,

we fixed some issues in past few weeks. Most of the issues were found in
private mails or on TeX.sx and they haven't been posted on tex4ht issue
tracker, so I will sum some of these fixes here:

- Babel: 
  - Russian and Greek should work with LuaLaTeX and XeLaTeX. It is
    possible that it will be necessary to fix also other language
    definitions that explicitly request OpenType fonts, so feedback is
    welcome 
  - fixed compilation error in html4.4ht that appeared with LuaLaTeX abd
    XeLaTeX
- Fontspec
  - fixed support for accented commands such as \v{c}
- HTML4
  - fixed paragraphs after some AMS math environments
  - fixed equation number positioning for align 
  - fixed width and height attributes for <img>, they shouldn't contain
    units
  - use Unicode values instead of images for some accenting commands
    (\d for example)
- HTML5
  - added document language as lang and xml:lang attributes for <html>
    element
  - added support for xmlns using \Configure{xmlns}{name}{uri}
  - removed cellspacing and cellpading attributes from configuration for
    `tabular`. Removed some <center> elements. Many more deprecated
    attributes and elements are still used though, so we need to take a
    further look on this!
  - don't load MathML by default
- MathML
  - configuration for \mathbf contained a bug that caused wrong
    processing of math characters in resulting document. This was a
    pretty serious bug!
- Fonts
  - fixed some Unicode issues for ctib fonts. It is much better to
    compile Tibetan as images thought, as it seems that the result still
    isn't correct. See http://tex.stackexchange.com/a/362585/2891 for
    more details.
- Literate sources and the Makefile
  - many cleanups and fixes (many thanks to Karl for spotting so many
    mistakes!)

I also spotted another conversation where someone thought that tex4ht
receives no updates and is basically dead, probably because of this
message on CTAN:

>> No official release of tex4ht has been made since Eitan Gurari, the
>> original author, passed away.  When the release is finally made (there
>> is no ETA at present), it will be available here.

Maybe we should at least change that message, if we can't update the
tex4ht_all.zip on CTAN. This file is quite messy, by the way :(

Best regards,
Michal