changelog.txt



[0.20]

  * Require at least one nonspace character in a link label (#322).
  * Require replacement (rather than omission) of U+0000 (#327).
  * Clarify that entities resolving to U+0000 are to be
    replaced by U+FFFD (#323).
  * Removed statement that what counts as a line ending is
    platform-dependent (#326).  We now count `\r`, `\n`,
    or `\r\n` as a line ending regardless of the platform.
    (The line ending styles can even be mixed in a single document.)
  * Define "space."
  * Revise "non-space character". Previously a non-space character
    was defined as anything but a space (U+0020).  Now it is anything
    that is not a whitespace character (as defined in the spec).
  * Clarify that tab expansion is a preprocessing step (#330).
  * Added a test case with `#` directly followed by a letter
    (not an ATX header).
  * Added two test cases illustrating that a list at the
    outer level can have items that are indented by more
    than four spaces (see commonmark.js#42 and
    <http://talk.commonmark.org/t/odd-list-behaviour/1189>).
  * Fixed typo in emphasis examples.

[0.19]

  * Fixed rules for `_`-based emphasis and strong emphasis (#317).
    Previously `_(bar)_.` was not parsed as containing emphasis
    because the closing delimiter is both left- and right- flanking.
    This fix allows such delimiters, provided they're followed
    by punctuation (i.e., they have punctuation on both sides).
    Similarly, mutatis mutandis, for opening delimiters and for `__`.
  * Clarified definitions of left-flanking and right-flanking (#310).
    The spec now says explicitly that the beginning and end of line count
    as whitespace for purposes of this definition.
  * Clarified that a code fence followed by header line isn't a header (#306).
  * Fixed alignment in flankingness examples (cosmetic).
  * Fixed last "right flanking but not left flanking" example (#316).
  * Fixed a broken link (Konstantin Zudov).
  * Added link to list of implementations on wiki.
  * Fixed mistake in examples of left/right flanking delimiters
    (Konstantin Zudov).
  * Spell out `iff` (if and only if) the first time it is used (#309).
  * Fixed typos (isoroku, #309).
  * Clarified wording for soft line break: newline can't be preceded
    by two spaces or a backslash.
  * Replaced some references to UTF-8 that should be to unicode.
  * Fixed dingus link in tools/template.html.
  * Replaced obsolete reference to `spec2md.pl` in spec (#304).

[0.18]

  * Added a shortcut link test with mismatched brackets (#282).
  * Added cases with newline whitespace around emphasis open delimiter
    (#282).
  * Added list item examples with no space after marker (#282).
  * Added additional test showing backslash escapes don't work in
    autolinks (#282).
  * Added test for multiline title in reference definition (#282).
  * Added a reference link definition test case (#282).
  * Clarified that link titles can't contain blank lines (#271).
  * Revised Rule 3 for list items (#275).  Previously this just applied to
    empty list items.  It has been rewritten to apply to any list item
    starting with a blank line, including items like:

        -
          ```
          code
          ```

  * Added U+000B and U+000C as whitespace characters (#300).
  * Added comment on sourcepos attribute format in DTD (#298).
  * Use `--smart` option in producing HTML version of spec.
  * Clarified that delimiter runs at beginning/end of line behave as
    if preceded/followed by whitespace (#302).
  * Ensure that URLs in examples have slash after domain.
    This helps with #9, making these tests less sensitive to
    the normalizer used.
  * Fixed typo (Robin Stocker).

[0.17]

  * Improved rule limiting intraword `_` for emphasis and strong emphasis.
    To prevent intra-word emphasis, we used to check to see if
    the delimiter was followed/preceded by an ASCII alphanumeric.
    We now do something more elegant:  whereas an opening `*` must
    be left-flanking, an opening `_` must be left-flanking *and
    not right-flanking*.  And so on for the other cases.
    All the original tests passed except some tests with Russian
    text with internal `_`, which formerly created emphasis but no
    longer do with the new rule.  These tests have been adjusted.
    A few new test cases have been added to illustrate the rule.
  * Added example with link break inside pointy braces (no link) (#295).
  * Added spec example: loose list with blank line after fenced code (#285).

[0.16]

  * Rewrote beginning of Entities section, clarifying that only
    entities not in code blocks or spans are decoded.
  * Removed defective Example 449 (#284).
  * Fixed typo (#283).
  * Added intended two-space hard-breaks in Examples 521, 523.
  * Clarified that brackets in general don't take precedence over emph
    (#258).
  * Clarified that final newline is removed from paragraph content
    (#176).
  * Talk of "info string" rather than "attributes" for code blocks
    (#262).
  * Clarified precedence of code spans, HTML tags, autolinks (#259).
  * Fixed a number of internal links and duplicate references in the spec.
  * Linkify "info string" in spec.
  * Use shortcut reference links when possible in spec.txt.
  * cmark itself is now used to build spec.html, rather than pandoc.
  * Use shortcut reference links when possible in spec.txt. This
    relies on the new `spec2md.py` behavior of creating references
    for all internal anchors.
  * Moved some examples from block to inline HTML section.
  * Added examples of non-comments (#264).
  * Changed rule for comments to conform to HTML5 spec.
  * Made clear that any sequence of characters is a valid document
    (#266).
  * Changed wording: "is preferred" -> "takes precedence."
  * Regularized spelling of "non-space character" and added links
    (#260).
  * Use four spaces rather than five to show "four spaces is too much"
    (#261).

[0.15]

  * Fixed some typos with "left-" and "right-flanking" delimiters in the
    section on emphasis and strong emphasis (#257).

[0.14]

  * Clarified indented code blocks. Previously the spec said, wrongly,
    that a blank line was needed between a paragraph and a following
    code block.  It is only needed between a code block and a following
    paragraph (due to lazy continuations). (Thanks to textnut.)
  * Added definitions of whitespace, unicode whitespace, punctuation,
    ASCII punctuation (#108).
  * Improved rules for emphasis and strong emphasis. This improves
    parsing of emphasis around punctuation. For background see
    <http://talk.commonmark.org/t/903/6>. The basic idea of the change
    is that if the delimiter is part of a delimiter clump that has
    punctuation to the left and a normal character (non-space,
    non-punctuation) to the right, it can only be an opener.  If it has
    punctuation to the right and a normal character (non-space,
    non-punctuation) to the left, it can only be a closer. This handles
    cases like

          **Gomphocarpus (*Gomphocarpus physocarpus*, syn. *Asclepias
          physocarpa*)**

    and

          **foo "*bar*" foo**

    better than before.
  * Added test case for link-in-link-in-image (#252).
  * Fixed broken internal references.
  * Added another example of an unclarity in the canonical Markdown
    syntax description.
  * Reworded the principle of uniformity to be more general; it applies
    to all container blocks, not just list items.
  * Added a rule for empty list items (#242).
  * Clarified precedence of empty list items over setext header lines
    (#95).
  * Added an example with two blank lines in fenced code in a sublist (#180).
  * Added an explicit CC-BY-SA license to the spec (#55).

[0.13]

  * Updated path of test program.
  * Use terminology "plain textual content" instead of "string."
  * Added condition that conforming parsers strip or replace NULL characters.
  * Changed Example 196 to reflect the spec's rules.  It should not be a loose
    list as it has no blank lines.
  * Adjusted semantically insignificant formatting of HTML output.
  * Added example to spec of shortcut link with following space (#214).