py311 compatibility

python 3.11 prevents use of global flags not at the start
of the regex. Mistune does something with the regex that
conflicts with the use of a global flag (even at the start
of the regex) and pre-compiling does not work. Instead
of using DOTALL use [\w\W].

.github/workflows/sphinx_asdf_ci.yml

@@ -16,6 +16,11 @@ jobs:
     strategy:
       matrix:
         include:
+          - name: Python 3.11 Tests
+            python-version: "3.11"
+            os: ubuntu-latest
+            toxenv: py311
+
           - name: Python 3.10 Tests
             python-version: "3.10"
             os: ubuntu-latest

sphinx_asdf/md2rst.py

@@ -41,6 +41,6 @@ def md2rst(content):
     converter = mistune.create_markdown(renderer=renderer)
     INLINE_MATH_PATTERN = r"\$\$?(?!\s)(?P<math_text>.+?)(?!\s)(?<!\\)\$\$?"
     converter.inline.register("inline_math", INLINE_MATH_PATTERN, parse_inline_math, before="link")
-    BLOCK_MATH_PATTERN = r"(?s)\$\$(?P<math_text>.*?)\$\$"
+    BLOCK_MATH_PATTERN = r"\$\$(?P<math_text>[\w\W]*?)\$\$"
     converter.block.register("block_math", BLOCK_MATH_PATTERN, parse_block_math, before="list")
     return converter(content)