Import markdown from coaster.utils; revise Ruff config (#488)

.pre-commit-config.yaml

@@ -8,7 +8,7 @@ repos:
     hooks:
       - id: check-pre-commit-ci-config
   - repo: https://github.com/astral-sh/ruff-pre-commit
-    rev: v0.4.3
+    rev: v0.4.4
     hooks:
       - id: ruff
         args: ['--fix', '--exit-non-zero-on-fix']

pyproject.toml

@@ -173,64 +173,6 @@ exclude_dirs = ['node_modules']
 skips = ['*/*_test.py', '*/test_*.py']
 
 [tool.ruff]
-# This is a slight customisation of the default rules
-# 1. Funnel still targets Python 3.7 pending an upgrade of production environment
-# 2. Rule E402 (module-level import not top-level) is disabled as isort handles it
-# 3. Rule E501 (line too long) is left to Black; some strings are worse for wrapping
-
-# Enable pycodestyle (`E`) and Pyflakes (`F`) codes by default.
-lint.select = ["E", "F"]
-lint.ignore = ["E402", "E501"]
-
-# Allow autofix for all enabled rules (when `--fix`) is provided.
-lint.fixable = [
-  "A",
-  "B",
-  "C",
-  "D",
-  "E",
-  "F",
-  "G",
-  "I",
-  "N",
-  "Q",
-  "S",
-  "T",
-  "W",
-  "ANN",
-  "ARG",
-  "BLE",
-  "COM",
-  "DJ",
-  "DTZ",
-  "EM",
-  "ERA",
-  "EXE",
-  "FBT",
-  "ICN",
-  "INP",
-  "ISC",
-  "NPY",
-  "PD",
-  "PGH",
-  "PIE",
-  "PL",
-  "PT",
-  "PTH",
-  "PYI",
-  "RET",
-  "RSE",
-  "RUF",
-  "SIM",
-  "SLF",
-  "TCH",
-  "TID",
-  "TRY",
-  "UP",
-  "YTT",
-]
-lint.unfixable = []
-
 # Exclude a variety of commonly ignored directories.
 exclude = [
   ".bzr",
@@ -258,15 +200,30 @@ exclude = [
 # Same as Black.
 line-length = 88
 
-# Allow unused variables when underscore-prefixed.
-lint.dummy-variable-rgx = "^(_+|(_+[a-zA-Z0-9_]*[a-zA-Z0-9]+?))$"
-
 # Target Python 3.9
 target-version = "py39"
 
-[tool.ruff.lint.mccabe]
-# Unlike Flake8, default to a complexity level of 10.
-max-complexity = 10
+[tool.ruff.format]
+docstring-code-format = true
+quote-style = "preserve"
+
+[tool.ruff.lint]
+# Enable pycodestyle (`E`) and Pyflakes (`F`) codes by default.
+select = ["E", "F"]
+ignore = ["E402", "E501"]
+
+# Allow autofix for all enabled rules (when `--fix`) is provided.
+fixable = ["ALL"]
+unfixable = []
+
+[tool.ruff.lint.extend-per-file-ignores]
+"__init__.py" = ["E402"] # Allow non-top-level imports
+"tests/**.py" = [
+  "S101",   # Allow assert
+  "ANN001", # Args don't need types (usually fixtures)
+  "N802",   # Fixture returning a class may be named per class name convention
+  "N803",   # Args don't require naming convention (fixture could be a class)
+]
 
 [tool.ruff.lint.isort]
 # These config options should match isort config above under [tool.isort]
@@ -290,3 +247,6 @@ repo = ['baseframe']
 [tool.ruff.lint.flake8-pytest-style]
 fixture-parentheses = false
 mark-parentheses = false
+
+[tool.ruff.lint.pyupgrade]
+keep-runtime-typing = true

src/baseframe/filters.py

@@ -14,8 +14,7 @@
 from pytz import utc
 from wtforms import Field as WTField
 
-from coaster.gfm import markdown
-from coaster.utils import compress_whitespace, md5sum, text_blocks
+from coaster.utils import compress_whitespace, markdown, md5sum, text_blocks
 
 from .blueprint import baseframe
 from .extensions import DEFAULT_LOCALE, _, cache, get_timezone