13.0

13.0

• BREAK: Arithmatex: Generic mode is now the default mode as the old MathJax script approach has not been
  supported in MathJax for a long time now. We still provide script approach and have updated configuration to get it
  properly working in recent MathJax versions.
• BREAK: Arithmatex: Non-generic mode now escapes content in script to prevent closing </script> from causing
  unintended behavior. Guidance on configuration for non-generic mode has been updated in the documentation.
• NEW: Require at least Python Markdown 3.10.3 for performance improvements.
• NEW: Drop Python 3.10 and require Python >= 3.11.5 as possessive quantifiers are broken on lower versions.
• NEW: MagicLink: Bare http://, https://, and www. links now follow GFM's extended autolink rules for what
  is considered the end of a link (trailing punctuation, entities, unbalanced ) and ]) and what a link can follow.
  Links no longer start after arbitrary punctuation (quotes are still allowed), and http://host style links with a
  short host are allowed.
• FIX: Critic: Fix quadratic (and cubic for substitutions) time complexity when parsing a large number of unclosed
  CriticMarkup openers by replacing the regular expression with a linear time scanner.
• FIX: PathConverter, B64: Handle elements with unquoted attributes.
• FIX: Arithmatex: Fix generic mode output when tex_inline_wrap or tex_block_wrap contain braces.
• FIX: InlineHilite: Fix regression related to unmatched opening and closing.
• FIX: FancyLists: Keep i and I in alphabetical lists after a blank line.
• FIX: BracketSpan: Fix unwanted colon attributes with {: ...} syntax.
• FIX: Snippets: Fix escaped section markers starting or ending a section before its start.
• FIX: StripHTML: Fix crash when strip_comments is disabled.
• FIX: Quotes: Fix callouts in indented blockquotes.
• FIX: Details, Admonitions, SaneHeaders: Improve performance of header patterns.
• FIX: Blocks.HTML: Improve performance of HTML patterns.
• FIX: MagicLink: Fix URLs with balanced parentheses or brackets losing their closing character.
• FIX: MagicLink: Improve performance of link and email patterns by removing excessive backtracking.
• FIX: ProgressBar: Fix crash on malformed 100 percent values like [=100,0%].
• FIX: BracketSpan: Fix text being dropped or misplaced when an unpaired [ precedes a span that is returned from
  the cache, e.g. [[]{#a}[b[]{#c}.
• FIX: BetterEm, Tilde, Caret, Mark: Apply the CommonMark "rule of 3" so an ambiguous closing delimiter can skip
  an incompatible opener and pair with an earlier one, e.g. __[A](u){target="_blank"}__: x.
• FIX: BetterEm, Tilde, Caret, Mark: Better handling of Python Markdown placeholders when when evaluating
  CommonMark punctuation rules.
• FIX: Blocks.Caption: Fix crash when a numbered caption is nested inside a figure not created by the caption
  block.
• FIX: BetterEm, Tilde, Caret, Mark: Fix text being dropped when a stray delimiter that cannot open or close
  appears between delimiter pairs parsed together, e.g. ***l* * **e**.
• FIX: BetterEm, Tilde, Caret, Mark: Fix text being dropped or misplaced when unused delimiters inside a
  parsed span were reprocessed against delimiter pairs found later in the same text.
• FIX: Tilde, Caret: Fix a crash when a subscript or superscript with no space allowed starts inside emphasis,
  e.g. *a ~b~* with delete disabled.
• FIX: BetterEm, Tilde, Caret, Mark: Unusable delimiters dropped by another delimiter's region no longer leave
  stale space tracking that can reject valid pairs later.
• FIX: Blocks.Caption: Fix crash when a numbered caption is nested inside a figure not created by the caption
  block.