lint: WIP markdown support

.github/workflows/lint.yml

@@ -52,11 +52,20 @@ env:
   # the subset of development dependencies installed.
   INSTALL_EXTRA: lint
 
+  ORG_REPO: trailofbits.com/.github
+  ORG_REPO_REF: ${{ github.job_workflow_sha }}
+  ORG_REPO_PATH: /tmp/org_github
+
 jobs:
   lint:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
+      - uses: actions/checkout@v3
+        with:
+          repository: ${ORG_REPO}
+          ref: ${ORG_REPO_REF}
+          path: ${ORG_REPO_PATH}
 
       # Python
       - name: configure python, if required
@@ -123,6 +132,16 @@ jobs:
           version: "${{ inputs.golangci-lint-version }}"
           working-directory: "${{ inputs.directory }}"
 
+      # Markdown
+      - name: run markdownlint-cli2
+        if: inputs.language == 'markdown'
+        uses: DavidAnson/markdownlint-cli2-action@v9
+        with:
+          command: config
+          globs: |
+            ${ORG_REPO_PATH}/configs/default.markdownlint.jsonc
+            **/*.md
+
       # Make
       - name: run lint (make)
         if: (inputs.language == 'python' && inputs.type == '') || inputs.type == 'make'

configs/default.markdownlint.jsonc

@@ -0,0 +1,240 @@
+{
+    // Default state for all rules
+    "default": true,
+    // MD001/heading-increment/header-increment - Heading levels should only increment by one level at a time
+    "MD001": true,
+    // MD002/first-heading-h1/first-header-h1 - First heading should be a top-level heading
+    "MD002": {
+        // Heading level
+        "level": 1
+    },
+    // MD003/heading-style/header-style - Heading style
+    "MD003": {
+        // Heading style
+        "style": "atx"
+    },
+    // MD004/ul-style - Unordered list style
+    "MD004": {
+        // List style
+        "style": "asterisk"
+    },
+    // MD005/list-indent - Inconsistent indentation for list items at the same level
+    "MD005": true,
+    // MD006/ul-start-left - Consider starting bulleted lists at the beginning of the line
+    "MD006": true,
+    // MD007/ul-indent - Unordered list indentation
+    "MD007": {
+        // Spaces for indent
+        "indent": 2,
+        // Whether to indent the first level of the list
+        "start_indented": false,
+        // Spaces for first level indent (when start_indented is set)
+        "start_indent": 2
+    },
+    // MD009/no-trailing-spaces - Trailing spaces
+    "MD009": {
+        // Spaces for line break
+        "br_spaces": 2,
+        // Allow spaces for empty lines in list items
+        "list_item_empty_lines": false,
+        // Include unnecessary breaks
+        "strict": false
+    },
+    // MD010/no-hard-tabs - Hard tabs
+    "MD010": {
+        // Include code blocks
+        "code_blocks": true,
+        // Fenced code languages to ignore
+        "ignore_code_languages": [
+            "make",
+            "makefile"
+        ],
+        // Number of spaces for each hard tab
+        "spaces_per_tab": 1
+    },
+    // MD011/no-reversed-links - Reversed link syntax
+    "MD011": true,
+    // MD012/no-multiple-blanks - Multiple consecutive blank lines
+    "MD012": {
+        // Consecutive blank lines
+        "maximum": 1
+    },
+    // MD013/line-length - Line length
+    "MD013": {
+        // Number of characters
+        "line_length": 80,
+        // Number of characters for headings
+        "heading_line_length": 80,
+        // Number of characters for code blocks
+        "code_block_line_length": 80,
+        // Include code blocks
+        "code_blocks": true,
+        // Include tables
+        "tables": true,
+        // Include headings
+        "headings": true,
+        // Include headings
+        "headers": true,
+        // Strict length checking
+        "strict": false,
+        // Stern length checking
+        "stern": false
+    },
+    // MD014/commands-show-output - Dollar signs used before commands without showing output
+    "MD014": true,
+    // MD018/no-missing-space-atx - No space after hash on atx style heading
+    "MD018": true,
+    // MD019/no-multiple-space-atx - Multiple spaces after hash on atx style heading
+    "MD019": true,
+    // MD020/no-missing-space-closed-atx - No space inside hashes on closed atx style heading
+    "MD020": true,
+    // MD021/no-multiple-space-closed-atx - Multiple spaces inside hashes on closed atx style heading
+    "MD021": true,
+    // MD022/blanks-around-headings/blanks-around-headers - Headings should be surrounded by blank lines
+    "MD022": {
+        // Blank lines above heading
+        "lines_above": 1,
+        // Blank lines below heading
+        "lines_below": 1
+    },
+    // MD023/heading-start-left/header-start-left - Headings must start at the beginning of the line
+    "MD023": true,
+    // MD024/no-duplicate-heading/no-duplicate-header - Multiple headings with the same content
+    "MD024": {
+        // Only check sibling headings
+        "allow_different_nesting": false,
+        // Only check sibling headings
+        "siblings_only": false
+    },
+    // MD025/single-title/single-h1 - Multiple top-level headings in the same document
+    "MD025": {
+        // Heading level
+        "level": 1,
+        // RegExp for matching title in front matter
+        "front_matter_title": "^\\s*title\\s*[:=]"
+    },
+    // MD026/no-trailing-punctuation - Trailing punctuation in heading
+    "MD026": {
+        // Punctuation characters not allowed at end of headings
+        "punctuation": ".,;:!。，；：！"
+    },
+    // MD027/no-multiple-space-blockquote - Multiple spaces after blockquote symbol
+    "MD027": true,
+    // MD028/no-blanks-blockquote - Blank line inside blockquote
+    "MD028": true,
+    // MD029/ol-prefix - Ordered list item prefix
+    "MD029": {
+        // List style
+        "style": "one_or_ordered"
+    },
+    // MD030/list-marker-space - Spaces after list markers
+    "MD030": {
+        // Spaces for single-line unordered list items
+        "ul_single": 1,
+        // Spaces for single-line ordered list items
+        "ol_single": 1,
+        // Spaces for multi-line unordered list items
+        "ul_multi": 1,
+        // Spaces for multi-line ordered list items
+        "ol_multi": 1
+    },
+    // MD031/blanks-around-fences - Fenced code blocks should be surrounded by blank lines
+    "MD031": {
+        // Include list items
+        "list_items": true
+    },
+    // MD032/blanks-around-lists - Lists should be surrounded by blank lines
+    "MD032": true,
+    // MD033/no-inline-html - Inline HTML
+    "MD033": {
+        // Allowed elements
+        "allowed_elements": []
+    },
+    // MD034/no-bare-urls - Bare URL used
+    "MD034": true,
+    // MD035/hr-style - Horizontal rule style
+    "MD035": {
+        // Horizontal rule style
+        "style": "consistent"
+    },
+    // MD036/no-emphasis-as-heading/no-emphasis-as-header - Emphasis used instead of a heading
+    "MD036": {
+        // Punctuation characters
+        "punctuation": ".,;:!?。，；：！？"
+    },
+    // MD037/no-space-in-emphasis - Spaces inside emphasis markers
+    "MD037": true,
+    // MD038/no-space-in-code - Spaces inside code span elements
+    "MD038": true,
+    // MD039/no-space-in-links - Spaces inside link text
+    "MD039": true,
+    // MD040/fenced-code-language - Fenced code blocks should have a language specified
+    "MD040": {
+        // List of languages
+        "allowed_languages": [],
+        // Require language only
+        "language_only": false
+    },
+    // MD041/first-line-heading/first-line-h1 - First line in a file should be a top-level heading
+    "MD041": {
+        // Heading level
+        "level": 1,
+        // RegExp for matching title in front matter
+        "front_matter_title": "^\\s*title\\s*[:=]"
+    },
+    // MD042/no-empty-links - No empty links
+    "MD042": true,
+    // MD043/required-headings/required-headers - Required heading structure
+    "MD043": {
+        // List of headings
+        "headings": [],
+        // List of headings
+        "headers": [],
+        // Match case of headings
+        "match_case": false
+    },
+    // MD044/proper-names - Proper names should have the correct capitalization
+    "MD044": {
+        // List of proper names
+        "names": [],
+        // Include code blocks
+        "code_blocks": true,
+        // Include HTML elements
+        "html_elements": true
+    },
+    // MD045/no-alt-text - Images should have alternate text (alt text)
+    "MD045": true,
+    // MD046/code-block-style - Code block style
+    "MD046": {
+        // Block style
+        "style": "consistent"
+    },
+    // MD047/single-trailing-newline - Files should end with a single newline character
+    "MD047": true,
+    // MD048/code-fence-style - Code fence style
+    "MD048": {
+        // Code fence style
+        "style": "consistent"
+    },
+    // MD049/emphasis-style - Emphasis style should be consistent
+    "MD049": {
+        // Emphasis style should be consistent
+        "style": "consistent"
+    },
+    // MD050/strong-style - Strong style should be consistent
+    "MD050": {
+        // Strong style should be consistent
+        "style": "consistent"
+    },
+    // MD051/link-fragments - Link fragments should be valid
+    "MD051": true,
+    // MD052/reference-links-images - Reference links and images should use a label that is defined
+    "MD052": true,
+    // MD053/link-image-reference-definitions - Link and image reference definitions should be needed
+    "MD053": {
+        // Ignored definitions
+        "ignored_definitions": [
+            "//"
+        ]
+    }
+}