Added

• release: publish an alpine container image flavour (10fc739)

Fixed

• discovery: honor config include patterns with non-standard extensions (4436dd7)

Downloads

Installation

Using uv (Recommended)

uv tool install rumdl

Using pip

pip install rumdl

Using pipx

pipx install rumdl

Direct Download

Download the appropriate binary for your platform from the table above, extract it, and add it to your PATH.

Added

• release: publish multi-arch container image to ghcr.io (2e3d70b)
• MD072: add required-keys option to enforce frontmatter key presence (7e8c78f)
• config: file-precise provenance in rumdl config output (f401004)

Fixed

• config: probe the working directory for project config even when it is $HOME (b49a2f8)

Downloads

Installation

Using uv (Recommended)

uv tool install rumdl

Using pip

pip install rumdl

Using pipx

pipx install rumdl

Direct Download

Download the appropriate binary for your platform from the table above, extract it, and add it to your PATH.

Fixed

• discovery: normalize path_relative_to output to forward slashes on Windows (36c8fd9)
• lsp: apply document fixes through the FixCoordinator (a5c5da1)
• stdin: lint stdin through the shared engine (065c4d2)

Downloads

Installation

Using uv (Recommended)

uv tool install rumdl

Using pip

pip install rumdl

Using pipx

pipx install rumdl

Direct Download

Download the appropriate binary for your platform from the table above, extract it, and add it to your PATH.

Fixed

• lsp: rebuild and prune workspace index when configuration changes (9ca9049)
• lsp: align workspace file discovery with CLI semantics (7a5d6aa)

Downloads

Installation

Using uv (Recommended)

uv tool install rumdl

Using pip

pip install rumdl

Using pipx

pipx install rumdl

Direct Download

Download the appropriate binary for your platform from the table above, extract it, and add it to your PATH.

Added

• config: warn when multiple rumdl configs shadow each other in a directory (49cd393)

Fixed

• config: apply inline --config overrides to subdirectory config groups (45800e8)
• config: anchor multi-path config discovery at the common ancestor of the target paths (5b0d3c7)
• config: discover global config from cwd for multi-path runs (#660) (3c28327)
• config: show shadowed-config warning paths relative to their directory (37358a1)

Thanks to @darwin for reporting and contributing the initial fix for multi-path config discovery in #660.

Downloads

Installation

Using uv (Recommended)

uv tool install rumdl

Using pip

pip install rumdl

Using pipx

pipx install rumdl

Direct Download

Download the appropriate binary for your platform from the table above, extract it, and add it to your PATH.

Added

• md030: align ordered list text to a column with ol-align-column (#658) (221cdaa) - thanks @chandlerc

Fixed

• md022: keep the blanks-around-headings fix idempotent when a heading sits between a list and a list marker
• md030: reject out-of-range ol-align-column values (3620545)
• md030: keep nested content attached when a marker widens (#657) (3bcc4c4) - thanks @chandlerc

Downloads

Installation

Using uv (Recommended)

uv tool install rumdl

Using pip

pip install rumdl

Using pipx

pipx install rumdl

Direct Download

Download the appropriate binary for your platform from the table above, extract it, and add it to your PATH.

Added

• code-block-tools: add deno fmt as a built-in formatter (755b086)
• junit: report passing files, not just failures (dc8a964)
• code-block-tools: generate built-in tools docs table from the registry (fe9d52c)

Fixed

• code-block-tools: drop rubocop (not usable as a generic code-block linter) (fa7fa83)
• code-block-tools: correct and drop built-ins after verifying real binaries (9106da9)
• code-block-tools: correct shellcheck invocation, drop unworkable eslint (415fab0)
• MD026: make trailing-punctuation removal idempotent (3dfeb83)
• config: bound project config discovery at the home directory (0cdf3b7)
• tables: use real line terminator for byte offsets in table detection (751b158)

Downloads

Installation

Using uv (Recommended)

uv tool install rumdl

Using pip

pip install rumdl

Using pipx

pipx install rumdl

Direct Download

Download the appropriate binary for your platform from the table above, extract it, and add it to your PATH.

Fixed

• MD077: normalize over-indented loose list continuation (6b9fcee)

Downloads

Installation

Using uv (Recommended)

uv tool install rumdl

Using pip

pip install rumdl

Using pipx

pipx install rumdl

Direct Download

Download the appropriate binary for your platform from the table above, extract it, and add it to your PATH.

Fixed

• MD062: treat a lone quote in a link destination as part of the URL (b3aea98)
• config: stop directory config discovery at the canonical project root (ef9f3f6)
• config: match root config by canonical path in per-directory resolution (4442a9f)
• output: relativize the verbose 'Processing file' path on Windows (35986d6)
• output: normalize remaining displayed paths to forward slashes on Windows (dbfb3ef)
• output: use forward slashes in displayed paths on Windows (7049c01)
• MD049,MD037: Preserve inline code inside emphasis during auto-fix (#652) (a1b1055)

Downloads

Installation

Using uv (Recommended)

uv tool install rumdl

Using pip

pip install rumdl

Using pipx

pipx install rumdl

Direct Download

Download the appropriate binary for your platform from the table above, extract it, and add it to your PATH.

Added

• lsp: resolve buffer-file links and extend hover previews (94e088a)

Fixed

• md034: don't flag URLs in JSX component attributes (MDX) (5ed2c5d)
• md013: avoid byte-slice underflow on all-emphasis lines (ad5647a)
• fix-utils: reject non-char-boundary ranges in validate_fix_range too (9d07c16)
• md072: span quoted keys fully in unsorted-key diagnostics (8aa9140)
• config: don't create phantom rule entries for unconvertible values (4b21cb0)
• md004: guard empty marker in count_marker_prevalence too (5584c23)
• config: keep pyproject [tool.rumdl] with only cache=true set (774a1b3)
• wasm: cover AzureDevOps and MyST flavors in round-trip test (58f8d0d)
• config: tighten pyproject rumdl-section detection (b8a5966)
• config: keep pyproject [tool.rumdl] with only scalar globals (7da87d7)
• md078,md079: declare Unfixable to match fix() returning Err (d1d838a)
• config: skip unconvertible markdownlint values instead of exiting (9bfc296)
• md004: guard against empty list marker instead of unwrapping (a73d0bf)
• check: emit cross-file diagnostics in a stable path order (8eb5027)
• md063: preserve URLs with nested parens and image alt text (ba68a84)
• md057: only treat bare .com domains as external, not relative paths (a0f8a86)
• md046: no trailing spaces on blank lines and tighter list detection (eceb1d6)
• md072: preserve trailing newline and sort quoted keys by content (73f80cf)
• fix-utils: reject fix ranges that split UTF-8 codepoints (1ded124)
• md033: avoid non-char-boundary panic on multi-byte whitespace in tags (5dfbec7)

Performance

• md037: use cached HTML-comment lookup in the warning filter (e5dcf91)
• lint-context: cache math byte ranges for is_in_math_context (33ff165)
• md057: index lines via raw_lines() instead of lines().nth() (251e8ff)
• md032: compare blockquote prefixes as &str without allocating (c4f37d6)
• lint-context: skip kramdown masking when there are no extension lines (29378b2)
• rules: use LazyLock regexes instead of the mutex-backed cache (f757bae)
• workspace: clear reverse deps via the file's own links (f28a27d)
• lint-context: precompute math-block closer lookahead (be6796a)
• lint-context: make is_in_list_block/is_in_table_block O(1) (9dc96a4)
• reflow: scan is_horizontal_rule without allocating a Vec (9664d22)
• reflow: hoist char collection out of is_sentence_boundary (457cbad)

Downloads

Installation

Using uv (Recommended)

uv tool install rumdl

Using pip

pip install rumdl

Using pipx

pipx install rumdl

Direct Download

Download the appropriate binary for your platform from the table above, extract it, and add it to your PATH.