Implement feature request #40 Option to embed images as data URI.

[docutils.git] / docutils / RELEASE-NOTES.txt

.. -*- coding: utf-8 -*-

========================
 Docutils Release Notes
========================

:Contact: grubert@users.sourceforge.net
:Maintainer: docutils-develop@lists.sourceforge.net
:Date: $Date$
:Revision: $Revision$
:Web site: http://docutils.sourceforge.net/
:Copyright: This document has been placed in the public domain.


This document summarizes the major changes in recent and upcoming releases.
For a more detailed list of changes, please see the Docutils `HISTORY`_.

.. contents::

Future changes
==============

* `latex` writer:
    The default for the configuration setting `legacy_class_functions`_ will
    change to "False". Adapt stylesheets modifying ``\DUadmonition``
    and/or ``\DUtitle`` or set to "True".

* `html5` writer:
    Use <blockquote> instead of <div> tags for topics and admonitions.
    
    Use <summary> and <details> tags for term and definition of a
    definition list with class value "details".

* `s5_html` writer:
    Remove the IE PNG Fix by Angus Turnbull. IE has native PNG
    support since version 7.

* ``Node.traverse()`` will return an iterator instead of a list.

* Remove ``utils.unique_combinations``
  (obsoleted by ``itertools.combinations``).

* Eventually remove the "rawsource" attribute and argument from nodes.Text:
  we store the null-escaped text in Text nodes since 0.16 so there is no
  additional information in the rawsource.

* If the id_prefix_ setting is non-empty, leading number and hyphen characters
  will not be stripped from a `reference name`_ during `identifier
  normalization`_. This may change generated `identifier keys`.

  Example: with ``--id-prefix="DU-"``, a section with title "34. May"
  currently gets the identifier key ``DU-may`` and after the change the
  identifier key ``DU-34-may``.

* The default value for auto_id_prefix_ will change to "%". This means
  auto-generated IDs will use the tag name as prefix. Set auto_id_prefix_ to
  "id" if you want unchanged auto-IDs or to "%" if you want descriptive IDs.

* The default HTML writer "html" with frontend ``rst2html.py`` may change
  from "html4css1" to "html5".

  Use ``get_writer_by_name('html')`` or the rst2html.py_ front end, if you
  want the output to be up-to-date automatically.

  Use a specific writer name or front end, if you depend on stability of the
  generated HTML code, e.g. because you use a custom style sheet or
  post-processing that may break otherwise.

.. _id_prefix: docs/user/config.html#id-prefix
.. _auto_id_prefix: docs/user/config.html#auto-id-prefix
.. _rst2html.py: docs/user/tools.html#rst2html-py
.. _reference name: docs/ref/rst/restructuredtext.html#reference-names
.. _identifier normalization: directives.html#identifier-normalization


Release 0.17
============

* Installing with ``setup.py`` now requires setuptools_.
  Alternatively, install with pip_.
  
* HTML writers: new option to embed images.

* HTML5 writer:

  - Use the new semantic tags <main>, <section>, <header>,
    <footer>, <aside>, <figure>, and <figcaption>.
    See ``minimal.css`` and ``plain.css`` for styling rule examples.

    Change the `initial_header_level`_ setting's default to "2", as browsers
    use the `same style for <h1> and <h2> when nested in a section`__.
    
  - Use HTML text-level tags <small>, <s>, <q>, <dfn>, <var>, <samp>, <kbd>,
    <i>, <b>, <u>, <mark>, and <bdi> if a matching class value
    is found in `inline` and `literal` elements.
    Use <ins> and <del> if a matching class value
    is found in `inline`, `literal`, or `container` elements.

  - Wrap block-level image elements in <p> (except for figures).
    Move non-essential styling from ``minimal.css`` to ``plain.css``.
    Support numbered figures in ``plain.css``.

  .. _initial_header_level: docs/user/config.html#initial-header-level
  __ https://stackoverflow.com/questions/39547412/same-font-size-for-h1-and-h2-in-article

* LaTeX writer:

  - New configuration setting `legacy_class_functions`_.

  - The special value "auto" for the `graphicx_option`_ setting
    is no longer supported (it never worked for xetex/luatex).

  - `Styling commands`__ using the legacy ``\docutilsrole`` prefix are
    now ignored. Use ``\DUrole``.

    __ docs/user/latex.html#classes

  - Most helper commands and element definitions are now defined in the
    LaTeX package `docutils.sty`_ and only inserted in the document
    preamble if the stylesheet__ setting does not lists "docutils".
    
    __ docs/user/config.html#stylesheet-latex-writers
    
.. _setuptools: https://pypi.org/project/setuptools/
.. _pip: https://pypi.org/project/pip/
.. _legacy_class_functions: docs/user/config.html#legacy-class-functions
.. _graphicx_option: docs/user/config.html#graphicx-option
.. _docutils.sty: https://ctan.org/pkg/docutils


Release 0.16 (2020-01-12)
=========================

.. Note::

   Docutils 0.15.x is the last version supporting Python 2.6, 3.3 and 3.4.

   Docutils 0.16.x supports Python 2.7 and Python >= 3.5 natively,
   without the use of the ``2to3`` tool.

* reStructuredText:

  - Keep `backslash escapes`__ in the document tree. This allows, e.g.,
    escaping of author-separators in `bibliographic fields`__.

  __ http://docutils.sourceforge.net/docs/ref/rst/restructuredtext.html#escaping-mechanism
  __ docs/ref/rst/restructuredtext.html#bibliographic-fields

* LaTeX writer:

  - Informal titles of type "rubric" default to bold-italic and left aligned.
  - Deprecate ``\docutilsrole`` prefix for styling commands:
    use ``\DUrole`` instead.
  - Fix topic subtitle.
  - Add "latex writers" to the `config_section_dependencies`.
  - Ignore classes for `rubric` elements
    (class wrapper interferes with LaTeX formatting).

* tools/buildhtml.py

  - New option "--html-writer" allows to select "html__" (default),
    "html4" or "html5".

  __ html: docs/user/html.html#html

* docutils/io.py

  - Remove the `handle_io_errors` option from io.FileInput/Output.

* docutils/nodes.py

  - If `auto_id_prefix`_ ends with "%", this is replaced with the tag name.

  .. _auto_id_prefix: docs/user/config.html#auto-id-prefix

* Various bugfixes and improvements (see HISTORY_).


Release 0.15 (2019-07-20)
=========================

.. Note::

   Docutils 0.14.x is the last version supporting Python 2.4, 2.5,
   3.1, and 3.2.

   Docutils 0.15.x is compatible with Python versions 2.6, 2.7 and 3.3 to 3.5
   (cf. `Python 3 compatibility`_).

* reStructuredText:

  - Allow embedded colons in field list field names (before, tokens like
    ``:this:example:`` were considered ordinary text).

  - Fixed a bug with the "trim" options of the "unicode" directive.

* languages: Added Korean localisation (ko).


Release 0.14 (2017-08-03)
=========================

* docutils/docs/ref/docutils.dtd:

  - Enable validation of Docutils XML documents against the DTD:

* docutils/parsers/rst/:

  - Added functionality: escaped whitespace in URI contexts.
  - Consistent handling of all whitespace characters in inline markup
    recognition. (May break documents that relied on some whitespace
    characters (NBSP, ...) *not* to be recognized as whitespace.)

* docutils/utils/smartquotes.py:

  - Update quote definitions for et, fi, fr, ro, sv, tr, uk.
  - Add quote definitions for hr, hsb, hu, lv, sh, sl, sr.
  - Differentiate apostrophe from closing single quote (if possible).
  - Add command line interface for stand-alone use (requires 2.7).

* docutils/writers/_html_base:

  - Provide default title in metadata.
  - The MathJax CDN shut down on April 30, 2017. For security reasons, we
    don't use a third party public installation as default but warn
    if `math-output` is set to MathJax without specifying a URL.
    See math-output_ for details.

* docutils/writers/html4css1:

  - Respect automatic table column sizing.

* docutils/writers/latex2e/__init__.py

  - Handle class arguments for block-level elements by wrapping them
    in a "DUclass" environment. This replaces the special handling for
    "epigraph" and "topic" elements.

* docutils/writers/odf_odt:

  - Language option sets ODF document's default language
  - Image width, scale, ... set image size in generated ODF.

* tools/

  - New front-end ``rst2html4.py``.


Release 0.13.1 (2016-12-09)
===========================

* docutils/writers/html5_polyglot

  - New HTML writer generating `HTML 5`_.

  .. _HTML 5: http://www.w3.org/TR/html5/

* tools/

  - New front-end ``rst2html5.py``.

* languages: persian/farsi (fa) and latvian (la) mappings.

* change default base url for :rfc: to http://tools.ietf.org/html/

* tables accept widths, a list and align

* latex2e: Fix admonition width, remove deprecated options,
  better tablewidth auto, ...

* rst.el: The problem with ``electric-indent-mode`` has been fixed.


Release 0.12 (2014-07-06)
=========================

Small changes only, release current state


Release 0.11 (2013-07-22)
=========================

* General

  - Apply [ 2714873 ] Fix for the overwritting of document attributes.
  - Support embedded aliases within hyperlink references.
  - Fix [ 228 ] try local import of docutils components (reader, writer, parser,
    language module) before global search.

* docutils/parsers/rst/directives/tables.py

  - Fix [ 210 ] Python 3.3 checks CVS syntax only if "strict" is True.

* docutils/writers/html4css1/__init__.py
  - Fix [ 3600051 ] for tables in a list, table cells are not compacted.
  - New setting `stylesheet_dirs` (see above).

    Now, it is easy to add a custom stylesheet to Docutils' default
    stylesheet with, e.g., ``--stylesheet_path='html4css1.css, mystyle.css'``

    Changed behaviour of the default settings:
      if there is a file ``html4css1.css`` in the working directory of the
      process at launch, it is used instead of the one provided by Docutils
      in the writer source directory.

  - New default for math-output_: ``HTML math.css``.
  - Avoid repeated class declarations in html4css1 writer
    (modified version of patch [ 104 ]).

  .. _math-output: docs/user/config.html#math-output

* docutils/writers/latex2e/__init__.py

  - Drop the simple algorithm replacing straight double quotes with
    English typographic ones.
    Activate the SmartQuotes_ transform if you want this feature.
  - New setting `stylesheet_dirs`: Comma-separated list of directories
    where stylesheets are found. Used by `stylesheet_path` when expanding
    relative path arguments.

  .. _SmartQuotes: docs/user/config.html#smart-quotes

* docutils/writers/manpage.py

  - Fix [3607063] handle lines starting with a period.
  - Fix option separating comma was bold (thanks to Bill Morris).

Release 0.10 (2012-12-16)
=========================

.. Note::

   Docutils 0.9.x is the last version supporting Python 2.3.

   Docutils 0.10 is compatible with Python versions from 2.4 to 3.2
   (cf. `Python 3 compatibility`_).

* General:

  - SmartQuotes transform for typographic quotes and dashes.

  - ``docutils/math``, ``docutils/error_reporting.py``, and
    ``docutils/urischemes.py`` moved to the utils package.
    Code importing these modules needs to adapt, e.g.::

      try:
          import docutils.math as math
      except ImportError:
          import docutils.utils.math as math

  - enhanced math and error handling.

* docutils/io.py

  - FileInput/FileOutput: no system-exit on IOError.
    The `handle_io_errors` option is ignored.

* docutils/writers/html4css1/__init__.py

  - Use ``<code>`` tag for inline "code",
    do not drop nested inline nodes (syntax highlight tokens).
  - Customizable MathJax URL (based on patch by Dmitry Shachnev).
  - No line break after opening inline math tag.

* docutils/writers/latex2e/__init__.py, docutils/writers/xetex/__init__.py

  - Fix section numbering by LaTeX.

* docutils/writers/s5_html/__init__.py

  - Fix [ 3556388 ] Mathjax does not work with rst2s5.


Release 0.9.1 (2012-06-17)
==========================

* General:

  Several fixes for Python 3 usage.

* docutils/setup.py

  - Fix [ 3527842 ]. Under Python 3, converted tests and tools were
    installed in the PYTHONPATH. Converted tests are now
    stored in ``docutils/test3/``, tools no longer need conversion.

    If you installed one of Docutils versions 0.7 ... 0.9 with
    ``setup.py install`` under Python 3, remove the spurious
    ``test/`` and ``tools/`` directories in the site library root.


Release 0.9 (2012-05-02)
=========================

* General:

  - reStructuredText "code" role and directive with syntax highlighting
    by Pygments_.
  - "code" option of the "include" directive.

  .. _Pygments: http://pygments.org/

  - Fix [ 3402314 ] allow non-ASCII whitespace, punctuation
    characters and "international" quotes around inline markup.

  - Fix handling of missing stylesheets.

* setup.py

  - Fix [ 2971827 ] and [ 3442827 ]
    extras/roman.py moved to docutils/utils/roman.py

* docutils/utils.py -> docutils/utils/__init__.py

  - docutils.utils is now a package (providing a place for sub-modules)

* docutils/writers/html4css1/__init__.py

  - change default for `math-output` setting to MathJax

* docutils/writers/latex2e/__init__.py

  - Support the `abbreviation` and `acronym` standard roles.
  - Record only files required to generate the LaTeX source as dependencies.
  - Use ``\setcounter{secnumdepth}{0}`` instead of ``*``-versions
    when suppressing LaTeX section numbering.


Release 0.8.1 (2011-08-30)
==========================

* General:

  - Fix [ 3364658 ] (Change last file with Apache license to BSD-2-Clause)
    and [ 3395920 ] (correct copyright info for rst.el).

* docutils/writers/latex2e/__init__.py

  - Clean up Babel language setting. Restores Sphinx compatibility.


Release 0.8 (2011-07-07)
========================

* COPYING:

  - Some additions to the Docutils core are released under the 2-Clause BSD
    license.

* General:

  - Handle language codes according to `BCP 47`_.
  - If the specified langauage is not supported by Docutils,
    warn and fall back to English.
  - Math support: reStructuredText "math" role and directive,
    ``math`` and ``math_block`` doctree elements.
  - Orphaned "python" reader and "newlatex2e" writer moved to the sandbox.

  .. _BCP 47: http://www.rfc-editor.org/rfc/bcp/bcp47.txt

* reStructuredText:

  - most directives now support a "name" option that attaches a
    reference name. So you can write ::

      .. figure:: image.png
         :name: figure name

    as a short form of ::

      .. _figure name:

      .. figure:: image.png

Internationalization:

* Added lithuanian mappings.

Components:

* HTML writer:

  - New setting "math-output" with support for HTML, MathML, and LaTeX.

* LaTeX2e writer:

  - Convert image URI to a local file path.
  - Apply [ 3148141 ] fix multicolumn support when a colspanning cell
    has more than one paragraph (Wolfgang Scherer).

* XeTeX writer:

  - New writer generating LaTeX code for compiling with ``xelatex``.

    XeTeX uses unicode and modern font technologies.

* and fixes and enhancements here and there.


Release 0.7 (2010-07-07)
========================

Components:

* HTML writer:

  - Support SVG and SWF images (thanks to Stefan Rank).
  - Generate valid XHTML for centered images with targets.
    Use CSS classes instead of "align" tags for image alignment.

* LaTeX2e writer:

  - Use the ``\url`` command for URLs (breaks long URLs instead of writing
    into the margin).
  - Preserve runs of spaces in 'inline literals'.
  - Deprecate ``figure_footnotes`` setting.
  - Rename ``use_latex_footnotes`` setting to `docutils_footnotes`__.
  - New ``latex_preamble`` setting.
  - Use PDF standard fonts (Times/Helvetica/Courier) as default.
  - `hyperref` package called with ``unicode`` option (see the
    `hyperref config tips`__ for how to override).
  - Drop the special `output_encoding`__ default ("latin-1").
    The Docutils wide default (usually "UTF-8") is used instead.

__ docs/user/config.html#docutils-footnotes
__ docs/user/latex.html#hyperlinks
__ docs/user/latex.html#output-encoding

* manpage writer:

  - Titles level 1, that is ``.SH``, always uppercase.
  - Apply patch from mg: literal text should be bold in man-pages.

General:

* io.FileInput opens files as text files with universal newline support
  (mode "rU", configurable with the new optional argument "mode").

* setup.py:

  - Python 3 support: copy test/ and tools/ to the build-dir
    and convert Python sources with 2to3.


Release 0.6 (2009-10-11)
========================

.. Note::

   Docutils 0.5 is the last version supporting Python 2.2.

   Docutils 0.6 is compatible with Python versions from 2.3 up to 2.6
   and convertible to 3.1 code.

.. note::

   The "newlatex" writer is orphaned.

   The recommended way to generate PDF output is to use either the
   LaTeX2e writer or one of the alternatives listed at
   http://docutils.sourceforge.net/docs/user/links.html#pdf.

* reStructuredText:

  - Allow length units for all length specifications.
  - Allow percent sign in "scale" argument of "figure" and "image" directives.
  - Bugfix: The "figalign" argument of a figure now works as intended
    (aligning the figure not its contents).
  - Align images with class "align-[right|center|left]"
    (allows setting the alignment of an image in a figure).
  - Hard tabs in literal inclusions are replaced by spaces. This is
    configurable via the new "tab-width" option of the "include" directive
    (a negative tab-width prevents tab expansion).

* HTML writer:

  - ``--stylesheet`` and ``--stylesheet-path`` options now support a comma
    separated list of stylesheets.

* LaTeX2e writer:

  - New defaults:
    - font-encoding: "T1" (formerly implicitely set by 'ae').
    - use-latex-toc: true (ToC with page numbers).
    - use-latex-footnotes: true (no mixup with figures).
    - Float placement defaults to "here definitely" (configurable).
    - Align of image in a figure defaults to 'center'.
    - Use class defaults for page margins ('typearea' now optional).
  - Support LaTeX packages as ``--stylesheet`` arguments.
  - Use ``bp`` for lengths without unit or unit ``pt``,
    do not convert ``px`` to ``pt``.
  - Do not use 'ae' and 'aeguill' packages if font-encoding is set to ''.
  - Set sub- and superscript role argument as text not math.
  - Support custom roles based on standard roles.
  - Load packages and define macros only if required in the document.
  - All Docutils specific LaTeX macros are prefixed with ``DU``.
  - Better conformance to Docutils specifications with "use_latex_toc".
  - If 'sectnum_xform' is False, the 'sectnum' directive triggers
    section numbering by LaTeX.
  - Use default font in admonitions and sidebar.
  - Typeset generic topic as "quote with title".
  - Use template (file and configuration option).
  - Render doctest blocks as literal blocks (indented).

* ODT writer:

  - moved from sandbox to Doctutils core.

* manpage writer:

  - moved from sandbox to Doctutils core.


Release 0.5 (2008-06-25)
========================

Components:

* HTML writer.

  - Dropped all ``name`` attributes of ``a`` elements (``id`` is
    universally supported now).

* LaTeX2e writer:

  - Better bibTeX citation support.
  - Add ``--literal-block-env``

* PEP writer:

  - Changed to support new python.org website structure and
    pep2pyramid.py.

reStructuredText:

* Changed the directive API to a new object-oriented system.
  (Compatibility for the old, functional-style directive interface is
  retained.)  See the updated `Creating reStructuredText Directives`__
  how-to.

  __ docs/howto/rst-directives.html

* Allow ``+`` and ``:`` in reference names requested for citations.

Documentation:

* Added `Deploying Docutils Securely`__

  __ docs/howto/security.txt

Internationalization:

* Added hebrew mappings.

General:

* Configuration files are now assumed and required to be
  UTF-8-encoded.

* Added docutils/writers/html4css1/template.txt.

* Enhance emacs support.


Release 0.4 (2006-01-09)
========================

.. Note::

   Docutils 0.4.x is the last version that will support Python 2.1.
   Docutils 0.5 will *not* be compatible with Python 2.1; Python 2.2
   or later will be required.

   Docutils 0.4.x is the last version that will make compromises in
   its HTML output for Netscape Navigator 4.  Docutils 0.5 will
   require more up-to-date browsers (the exact definition is to be
   determined).

Components:

* Added an `S5/HTML writer`__ and the rst2s5.py__ front end:
  multi-platform, multi-browser HTML slide shows.

  __ docs/user/slide-shows.html
  __ docs/user/tools.html#rst2s5-py

* The newlatex2e writer is nearing completion.

* Added a DocTree reader, ``publish_doctree`` and
  ``publish_from_doctree`` convenience functions, for document tree
  extraction and reprocessing.

reStructuredText:

* Added directives: "container__" (generic block-level container),
  "default-role__" (role used for \`backtick\` syntax), "title__"
  (document title metadata), and "date__" (generate the current local
  date, for substitution definitions).

  __ docs/ref/rst/directives.html#container
  __ docs/ref/rst/directives.html#default-role
  __ docs/ref/rst/directives.html#title
  __ docs/ref/rst/directives.html#date

* Length units are now supported for image__ sizes.

  __ docs/ref/rst/directives.html#image

* Added `standard definition files`__ for special characters etc.

  __ docs/ref/rst/definitions.html

Internationalization:

* Added Japanese and Simplified Chinese language mappings, and support
  for double-width CJK-characters in tables and section titles.

Documentation:

* Added a `guide for distributors`__ (package maintainers) and a
  `guide for developers`__.

  __ docs/dev/distributing.html
  __ docs/dev/hacking.html

General:

* Added significant `Emacs support for reST`__.

  __ docs/user/emacs.html

* Added a `--strip-comments`__ option.

  __ docs/user/config.html#strip-comments

* `--embed-stylesheet`__ is now the default for the HTML writer
  (rather than --link-stylesheet).

  __ docs/user/config.html#embed-stylesheet


Release 0.3.9 (2005-05-26)
==========================

* Added "file_insertion_enabled__" and "raw_enabled__" settings.

  __ docs/user/config.html#file-insertion-enabled
  __ docs/user/config.html#raw-enabled

* Added `auto-enumerated lists`__.

  __ docs/ref/rst/restructuredtext.html#enumerated-lists

* Added `"header" and "footer"`__ directives.

  __ docs/ref/rst/directives.html#document-header-footer

* Added "list-table__" directive.

  __ docs/ref/rst/directives.html#list-table

* Added support for `section subtitles`__.

  __ docs/user/config.html#sectsubtitle-xform

* Added "field_name_limit__" and "option_limit__" settings to HTML writer.

  __ docs/user/config.html#field-name-limit
  __ docs/user/config.html#option-limit

* Added "cloak_email_addresses__" setting to HTML writer.

  __ docs/user/config.html#cloak-email-addresses

* UTF-8 BOMs are now removed from the input stream.


Release 0.3.7 (2004-12-24)
==========================

* A special "`line block`__" syntax has been added.  (Also see the
  `quick reference`__.)

  __ docs/ref/rst/restructuredtext.html#line-blocks
  __ docs/user/rst/quickref.html#line-blocks

* Empty sections are now allowed.

* A "raw__" role has been added.

  __ docs/ref/rst/roles.html#raw

* The LaTeX writer now escapes consecutive dashes (like "--" or "---")
  so that they are no longer transformed by LaTeX to en or em dashes.
  (Please see the FAQ__ for how to represent such dashes.)

  __ FAQ.html#how-can-i-represent-esoteric-characters-e-g-character-entities-in-a-document

* A `dependency recorder`__ has been added.

  __ docs/user/config.html#record-dependencies

* A directive has been added for `compound paragraphs`__.

  __ docs/ref/rst/directives.html#compound-paragraph


Release 0.3.5 (2004-07-29)
==========================

* Improved, extended and reorganized the documentation__.

  __ docs/index.html

* Added "csv-table__" directive.

  __ docs/ref/rst/directives.html#csv-table

.. _HISTORY: HISTORY.html
.. _Python 3 compatibility: README.html#python-3-compatibility