Commits on Jun 21, 2022

1. mdx_gist: inherit from InlineProcessor, work on Python 3.11 (getnikol… …

   …a#3630)
   
   The gist-rst pattern crashes Python 3.11, because its pattern
   tries to set the multiline flag - it starts with `(?m)` - but
   Markdown's `Pattern` class `__init__`, which is called by our
   `GistPattern.__init__`, 'wraps' the pattern with additional
   capture groups before compiling it. This causes the multiline
   flag not to be at the start of the 'wrapped' pattern. From
   Python 3.6 to Python 3.10 flags not being at the start of the
   pattern was deprecated and triggered a warning when trying to
   compile it; in Python 3.11 it's an error.
   
   Markdown 3.0.0 added a preferred `InlineProcessor` class:
   Python-Markdown/markdown#629
   which does not do this wrapping. It requires the subclass to
   implement `handleMatch`, which we already do. Our `handleMatch`
   uses named capture groups, so the change in the number of
   capture groups in the compiled expression shouldn't matter. So
   simply switching to inheriting from `InlineProcessor` instead
   of `Pattern` (and slightly adjusting the signature and return
   values to match what's expected of `InlineProcessor` subclasses)
   should solve the problem.
   
   We already required Markdown 3.0.0, so this does not mean we
   require a newer Markdown than before.
   
   Signed-off-by: Adam Williamson <awilliam@redhat.com>

   

   AdamWill committed Jun 21, 2022
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2. Fix docstring/comment formatting

   

   Kwpolska committed Jun 21, 2022
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