commonmark/commonmark-spec 0.26

CommonMark 0.26

on GitHub

Empty list items can no longer interrupt a paragraph.
This removes an ambiguity between setext headers and
lists in cases like

foo
-

Removed the "two blank lines breaks out of lists" rule.
This is incompatible with the principle of uniformity
(and indeed with the spec for list items, which requires
that the meaning of a chunk of lines not change when it
is put into a list item.)

Ordered list markers that interrupt a paragraph must start with 1.

Improved the section on tabs. Added some test cases for ATX
headers and thematic breaks. Clarified that it's not just cases
that affect indentation that matter, but all cases where whitespace
matters for block structure.

Removed example of ATX header with tab after #.

Allow HTML blocks to end on the last line of their container
(Colin O'Dell, #103).

Spec changes in strong/emph parsing. See
https://talk.commonmark.org/t/emphasis-strong-emphasis-corner-cases/2123
for motivation. This restores intuitive parsings for a number of cases.
The main change is to disallow strong or emph when one of
the delimiters is "internal" and the sum of the lengths of
the enclosing delimiter runs is a multiple of 3. Thus,
**foo*bar*** gets parsed <strong>foo*bar</strong> rather than
<em><em>foo</em>bar</em>** as before. Thanks to Fletcher Penney
for discussion.

Add tests to check that markdown parsing is working fine after an HTML
block end tag (Alexandre Mutel).

Add test case for nested lists with an indent > 4 (Alexandre Mutel).

Cleaned up terminology around lazy continuation lines. Added some links.

Fixed broken links and typos (Artyom, Matthias Geier, Sam Estep).

Use ≤ instead of < in list item spec for clarity.

Add point about readibility to "What is Markdown" section.

Add example for list item starting with a blank line with spaces
(Robin Stocker).

Make interact more button-like and clearer (Jeff Atwood).

spec_tests.py: exit code is now sum of failures and errors.

spec_tests.py: specify newline when opening file.