rumdl

Vership-Release: v0.2.77

Added

• MD094: report each invalid UTF-8 sequence, with its position (6c25d76)
• encoding: lint files containing invalid UTF-8 instead of skipping them (f531bf4)

Fixed

• MD013: leave definition lists as written when reflowing, instead of moving a definition's later paragraph out of the list (93ab135)
• MD013: keep every block of consecutive mkdocstrings blocks out of reflow (7199b0a)
• MD013: recognize mkdocstrings blocks whose identifier has no dot (31b56ea)
• cli: report a skipped file on the same stream as the run's other findings, not always stderr (9558bc5)
• MD092: follow the invocation's rule selection (b0dfbe2)
• lint-context: record only CommonMark headings as headings (1479a1e)
• cli: name every ignore file --respect-gitignore controls (268a54d)
• discovery: attribute empty runs to .markdownlintignore separately (834e10c)

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

• md093: add opt-in rule for inline formatting in headings (ed627ef)

Fixed

• md013: add opt-in link text wrapping (effdb6a)
• MD013: protect opt-in bracket display math during reflow (e2c7fe8)
• MD044: add opt-in whole-word matching for identifiers (013621e)

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 explicit rumdl, oxfmt, djlint, and shuck modes (77f0e55)

Fixed

• MD092: allow scoped suppression of documented conflicts (6f9a6cb)
• MD032: keep parent list items open after nested lists (952c507)
• MD026: delete a setext heading's trailing punctuation where it stands (7f0981c)
• parser: keep link reference definitions out of a setext heading (80fdfc3)
• parser: read the whole paragraph as a setext heading (5d7b046)
• parser: lint the headings a short or quoted setext underline makes (e183924)
• parser: keep a container open below a block written inside it (e2c13b7)
• parser: read an empty list item under a paragraph as its text (68a04ae)
• MD013: write one space at a soft break after a trailing space (6388794)
• MD013: keep a whole-line display math expression on its own line (cc518ab)
• MD013: read no math span through a code span (f069246)
• MD013: keep a definition-list marker written on its own line (7e11b9e)
• MD013: split a CJK sentence only where its delimiter runs pair (06ba814)
• MD013: keep a closing bracket with the CJK sentence it ends (a2a82de)
• MD057: require the link target's exact case on case-insensitive filesystems (202da50)
• MD057: check inline links whose text wraps onto another line (943d1de)
• parser: read a link label to the bracket the inline parse closes it at (8ace221)
• parser: read no setext heading inside an HTML block (9eebbd3)
• parser: end a paragraph at an MDX flow expression (8f2def2)
• MD090: report a break under the underline of an equals setext heading (b78d5eb)
• MD065: keep the underline of a quoted setext heading (320b7d0)
• parser: detect setext headings that start with markup or sit in a blockquote (5513bb8)
• lsp: apply only the fixes rumdl fmt applies in Fix all (1c7aabe)
• discovery: match a rooted Windows path without a drive against absolute exclude patterns (a021a02)
• mdx: pass the MDX recovery tests in builds without debug assertions (adb5d17)
• cli: mark fixed the finding the fix resolved when another says the same thing (9061b88)
• stdin: write a piped document back unchanged when no fix applies (6ed5b5b)
• cli: keep a diff out of JSON Lines output (15a575b)
• cli: list beside a diff the findings it leaves unfixed (c5a5c7a)
• cli: keep each Rust doc comment line's prefix when a fix adds or removes lines (b48d4b6)
• cli: state each summary count once, with singular nouns for one (fc451cb)
• stdin: honor fmt --check, fmt --diff and check --diff for piped documents (bb95a6d)
• cli: print --diff and fmt --check output as a patch git apply accepts (48af0f0)
• discovery: exclude a named or piped file whenever a directory walk would skip it (009e440)
• stdin: apply exclude patterns to --stdin-filename and --stdin-batch paths (6cf7b89)

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

• MD022,MD031,MD032,MD058: count a comment-only line as a blank line (b394e30)
• MD057: stop requiring index.md for directory links in filesystem mode (c04ae4e)
• MD051: validate fragments in repository-absolute cross-file links (ead5f39)
• parser: stop reading headings inside blocks whose body is not Markdown (59958b1)
• MD077: carry a code block's interior indentation when reindenting its fence (00c578d)

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

• MD090: add rule flagging horizontal rules directly before headings (09dcae5)

Fixed

• MD013: end a sentence after a closing marker run of any shape (e63206c)

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

• MD034: do not report the tail of a schemed URI as a bare email (a8df862)
• lsp: write the mailto scheme when converting a bare email to a link (600e229)
• config: measure suggestion distance in characters, not bytes (eabdf80)
• MD034: emit a link, not an autolink, when fixing bare URLs in MDX (98a6255)
• config: suggestion panics on multibyte characters (dd88a4a)

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

• mdx: recover instead of crashing on unclosed JSX in a link label (35de79c)
• lsp: index links whose paths contain parentheses (bc5adc0)
• MD057: handle balanced parentheses in link paths (b2a9ce9)
• MD032: respect suppression at each list boundary (9aeb5f3)
• MD087,inline-config: ignore directives inside inline code spans (749a7ea)
• stdin: preserve original bytes when formatting is unchanged (2c84470)
• MD046: align fence repairs with diagnostic edits (443892e)
• MD032: preserve line endings in document fixes (60bae56)

Performance

• MD024: avoid cloned keys and redundant diagnostic work (ffebf4e)

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

• MD032: recognize spaced nested blockquotes (974540f)
• MD032: separate lists from standalone code fences (e335c58)
• mdx: avoid parser panic on malformed Setext headings (5e4a387)
• preserve markdown containing merge conflicts (8aabd3d)
• deps: remove unmaintained paste and atomic-polyfill (e2ab5cb)

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

• MDX: recognize Markdown links and images inside JSX elements, including generated reference tables, without requiring blank lines. This removes false MD091 warnings and lets normal link rules check the content. JavaScript expressions, JSX attributes, comments, and code are excluded, and link fixes preserve source labels and positions (#801).

Performance

• Reduce regex locking and redundant rule work.
• Precompute proper-name lookups and streamline regex caching.

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

• code-block-tools: survive a tool that exits without reading its input (a3f2b15)
• MD042: do not report an image with an unparseable destination as an empty link (600236e)
• code-block-tools: report missing tool binaries instead of passing silently (fd83c4b)
• code-block-tools: report tool failures from the format path (4f92370)

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

• MD051: GitHub-style anchors match GitHub.com for a § in the heading and for an emoji not surrounded by spaces (#854) (d530737). A link written to the old slug is now reported, and MD073 regenerates the TOC entry of such a heading on its next fix; MD080 and the LSP heading rename use the same slug.
• MD063: recognize an ordinal wrapped in punctuation (473bf51)
• MD013: keep a link-only line inside the sentence it continues (3e767ee)
• MD013: read require-sentence-capital when counting sentences (8706780)

Added

• config: apply inline --config overrides to the non-rule sections (7737dca)
• cli: accept format as a hidden alias for fmt (0cd9168)

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

• MD091: add opt-in rule for markdown inside HTML blocks (4333acf)
• cli: add --no-code-block-tools and --only-code-block-tools mode flags (#829) (fc410f7)
• config: show every configuration section in rumdl config (#851) (4dc0d30)

Fixed

• config: parse [tool.rumdl.code-block-tools] in pyproject.toml (#851) (87b159d)
• config: report a malformed code-block-tools section (ed1b7c5)
• config: report the line length MD013 enforces (a4bf2a7)
• config: state that an empty section in rumdl config is empty (cac7b76)
• config: print each code-block-tools setting on one line (02ba15d)
• MD046: preserve code blocks during style conversion (9f13f3b)
• MD063: preserve the English first-person pronoun in sentence-case headings (#845) (35b2df9)
• MD063: honor pronoun boundaries and explicit ignores (0604c03)

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

• flavor: add preview support for GitHub Agentic Workflows (gh-aw), including imports and current conditional branch syntax (39f7263)
• Rust API: add MarkdownFlavor::GhAw; downstream exhaustive matches must handle the new variant
• MD089: add opt-in cjk-spacing rule (50f40a2)
• MD089: add configuration for cjk-spacing symbol sets (868e933)
• unicode: add is_cjk_letter predicate (087e518)

Fixed

• MD013: handle sentences ending before code spans in sentence-per-line reflow (#811, #812) (576e2c1)
• MD022: accept per-level arrays during validation (976087c)
• MD051: slug headings with the whitespace an anchor element leaves (04cbfc2)
• MD057: exclude Markdown-looking frontmatter strings from body link validation and workspace indexing (39f7263)
• MD041: never move or promote headings across GitHub Agentic Workflow control boundaries (39f7263)
• MD063: capitalize opening link labels in sentence case (88ea8b7)
• MD073: skip TOC entries for headings that slug to nothing (41e2312)
• docs: improve responsive accessibility (4b54ce5)

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

• brand: refine wordmark typography (e871dcb)
• playground: rebuild browser editor (35e27df)
• analytics: classify aggregate referral sources (3cc0ef2)
• brand: add social previews and npm identity (d6971f6)
• docs: restore terminal capture colors (eccf710)
• docs: frame terminal capture (084fc30)
• docs: use real terminal capture (e417bae)
• docs: replace hero proof with real terminal (6c66a07)
• docs: sharpen homepage activation path (a60b622)
• docs: expose private adoption snapshot (da299bb)
• brand: adopt Heading Pulse identity (1a05c28)
• docs: activate adoption analytics and reporting (3a0b64f)
• docs: improve website and product documentation (ad4ebf9)

Fixed

• deps: update vulnerable development dependencies (8489019)
• MD051: register HTML anchors as browsers resolve them (e4615b0)
• MD063: preserve every inline HTML tag in headings (e5de9cf)
• MD073: read TOC markers and heading anchors as rendered (6a8eba2)
• MD061: preserve matched term casing in diagnostics (11bf7cd)
• MD029: check parenthesized markers and ordered-only documents (c67c96c)
• MD041: promote only paragraph lines and measure title length in characters (faba034)
• MD026: keep entity and emoji shortcode delimiters in headings (ab0886d)
• MD009: honor br-spaces below 2 as no line-break exception (39bba7c)
• docs: sharpen closing invitation (32f8e33)
• docs: clarify repository check actions (136eb57)
• docs: restore homepage documentation gateway (db5ae8f)
• output: show full Windows paths without the verbatim prefix (2dbfd15)
• output: drop the Windows verbatim prefix from SARIF artifact URIs (c9a8758)
• output: harden machine-readable formats (3e2816d)
• docs: ignore out-of-contract adoption rows (473620d)
• docs: enforce analytics event contract (cc7d4c8)
• docs: make uvx the primary trial command (3fc2727)
• cli: honour --disable all and disable = ["all"] in rumdl check (22a3b37)
• docs: bind production analytics dataset (33f26c9)
• docs: make homepage links verifiable (df67325)

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

• flavor: add support for Markdown with Gherkin (MDG) (db62377)

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

• cli: add --stdin-batch for NUL-framed multi-document linting and --stdin-batch-closed-world for supplied-document-only link resolution (9ae854b)

Fixed

• lint-context: stop reading a lazy continuation as a setext underline (2c486b7)
• cli: stop rewriting Rust source when formatting doc comments (dc1eb6a)
• cli: report document-level fixes as fixed (7e767a9)
• cli: resolve canonical stdin batch target paths (134347b)
• MD057: respect closed-world self-reference policy (48675c1)

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

• deps: update h2 to 0.4.16 (a650302)

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

• MD033: ignore escaped HTML tag openers (eaa4075)
• config: match absolute patterns through symlinks (5dd6158)
• MD013: stop reflow from joining a setext heading into its underline (9ec9e17)

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

• wasm: load extends chains from embedder-supplied config files (e7c7d8f)

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

• MD013: let a sentence open with a number under require-sentence-capital (5060333)
• lsp: keep a CRLF document's line endings through fixes and code actions (c88a7da)

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

• MD076: attach its edit to each warning so the CLI reports it fixable (a10f6c8)
• MD076: analyse each nested list on its own spacing (eb2d9d8)
• MD064: judge column alignment per list so a nested item keeps its parent's exemption (9ea97d1)
• MD076: measure a list item's nesting level in columns as the block tracker does (15ba409)
• MD032: measure list indent in columns so a tab nests and continues an item (bd197b0)
• MD013: read sentence openers off the parse and honour reference definitions (78bafa9)
• MD032: measure an HTML opener's indent in columns against every open item (56944fc)
• MD013: keep links, images, math and HTML whole in sentence reflow (72871b9)
• code-block-tools: resolve Windows tool names the way Command::new does (a005be4)
• MD032: let an HTML block or fence at short indent end a list (75d49a8)
• MD032: keep a Quarto div fence out of the lazy-continuation check (98242fd)
• MD013: run reflow after every rule that rewrites inline content (aabb420)
• MD046: classify indented code blocks from the line above's verdict (e8004fb)
• MD032: treat under-indented text and no-space # lines as lazy continuations (3e60005)
• code-block-tools: resolve tools in-process instead of spawning which (fb3e5d8)
• MD057: invalidate cache when link targets change (f6ae68f)
• MD075: require an outer pipe on orphaned table row candidates (66d8d12)
• MD034: recognize reference definitions whose label escapes a closing bracket (f024e4d)

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: honor per-directory config across workspace features (2c7670f)
• core: align path-aware document processing across adapters (7285b7a)

Performance

• lsp: construct workspace index rules directly (864e42a)

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

• action: add a command input to run rumdl fmt (9b59bff)
• action: add install-only input to skip linting (aa0c604)
• MD010: add ignore-code-languages to exempt fence languages from tab checks (21b56d0)

Fixed

• config: honor the markdown attribute on every block-level element (6f88d71)
• links: stop parsing reference links and images inside HTML blocks (8829f6b)
• html-blocks: keep a nested raw-text element from opening its own block (27d96bb)
• code-block-tools: stop a linter in a format slot from overwriting the block (a40d7da)
• code-block-tools: report findings at the line they belong to (31cc6cb)
• code-block-tools: bound a hanging tool by its timeout and stop respawning it (6ce8a1d)
• action: add rumdl to PATH so later workflow steps can call it (98baf60)

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

• tables: find a table's extent in the document's flavor (ad139af)
• tables: quoted brackets and a blank target are not a wikilink (a8aed70)
• lsp: a rescan keeps an open buffer only where a file still is (8e16303)
• lsp: keep an open document indexed from its buffer (ea30cca)
• lsp: index what an editor is showing when the workspace is rescanned (0d8eacc)
• lsp: stop an evicted file from being put back by a waiting disk read (5644516)
• md075: ignore Obsidian wikilink aliases in prose after tables (dda35d5)
• md084: stop deleting line endings as invisible characters (e6ca26e)
• rules: report a multi-line link's range on the line it ends on (2e1fde5)
• config: break "did you mean" ties by name instead of by key order (23fafd9)
• lsp: keep a pending edit when a file is only evicted from the index (1e34c47)
• lsp: drop a pending edit when its file is deleted (f718eca)
• md038: include the closing backtick in the reported range (128b9a1)
• md038: stop deleting a line when trimming a multi-line code span (e2e27ac)
• md018: recognize tags that start with a digit (6237384)
• lsp: stop publishing diagnostics for files that were never opened (8b89584)
• lsp: refresh cross-file diagnostics when the workspace index changes (eecda03)

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

• md012: report blank lines before a code block that ends the document (#791) (e897556)
• rules: treat a template shortcode tag as opaque markup (6962184)
• cli: report a piped document's findings on stdout like every other run (47f8a50)

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

• md088: normalize quotes and dashes to ASCII (#763) (52e9844)

Fixed

• config: keep a file's per-file-ignores out of the workspace index it feeds (2bb0ce7)
• md051: validate cross-file link fragments for a document read from stdin (e215c65)
• md051: report a broken fragment on a query-string destination once (7c8390f)
• md088: leave modifier letters and math notation alone (56dbf0f)
• config: report the effective rule lists from config get global.* (5db8f0c)
• config: answer config get for every key rumdl accepts (ecce820)
• md035: publish the horizontal rule style the rule enforces (77c8c65)
• config: accept every config key a rule actually reads (8ec7bba)
• lsp: identify documents by the same resolved path as the index (78f4aa0)
• lsp: keep frontmatter values out of find-references results (499b005)
• md051: index cross-file links independently of frontmatter config (ca7b93e)
• lsp: build the workspace index from the rules the CLI uses (b7a293c)
• md051,md080: resolve the anchor style per file, not once from the global flavor (8e09304)

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

• md077: support fixed continuation indent config (#786) (fea6322)

Fixed

• md065: leave markers alone inside a block that hides its content (2654364)
• md065: report thematic breaks written with spaces between markers (1d29236)
• md076: ask the parser whether a list item's block is really fenced (fd616c2)
• md022: require a blank line below a heading above a spaced thematic break (27120f2)
• MD076: preserve fenced list item spacing (#788) (2d60067)
• md022: use the same list test below a heading in check and fix (#790) (ef926b7)
• md040: locate the fence a list marker holds instead of assuming the indent (6099a6c)
• md077: keep the strict-flavor minimum as a floor under a configured indent (cfaad2e)
• md077: reject a configured indent of 0 (1ac97a3)
• md077: accept the indent option instead of reporting it as unknown (cba175c)
• md013: stop exempting a complete link followed by a parenthesized aside (722fad6)
• md013: keep nested links intact when reflowing emphasis spans (#779) (cb65237)
• md013: exempt standalone links with nested markup or unresolved references (#781) (2c52283)

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.

Security

• config: keep an extends target's path and contents out of messages about it (72bcb49)

  An extends value is expanded from the environment before it is resolved, so naming the resolved path in an error or warning printed environment variable values wherever that message went, which under CI is the build log. extends also points at an arbitrary path, so a target that is not valid TOML had its offending line quoted back. A file reached through extends is now named by the reference as written, and its own text is never repeated. A config you name yourself is unchanged, and rumdl config, the language server's report to its editor, and RUST_LOG=debug still show resolved paths.

  Reported privately by Shuvam Kumar.

Fixed

• md072: keep every trailing newline when sorting frontmatter keys (a5e7c40)
• fix-utils: measure fix ranges against the content the rule read (2ed4238)
• md044: read a wikilink's display text, not the page name it hides (51d584e)
• md039: keep wikilinks and nested images intact when trimming link text (aabd859)
• md045,md057,md044: stop reporting wiki embeds as images (1147d17)
• md058,md065: preserve the trailing newline when inserting blank lines (#783) (0ba54ce)
• md013: track line numbers in BlockBuilder for list reflow (#780) (56e2b3f)
• mkdocs: read an indented code block inside a container body as code (9439134)
• md087,inline-config: judge directives in indented container bodies (9285de1)

Performance

• md038: judge nested backticks against the outermost spans on a line (b02ea88)

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

• md087: report inline disable comments that suppress nothing (40fc37d)
• md051,md057: check path-shaped frontmatter values behind an option (98a0ff0)
• md033: add allowed-inside and a no-markdown-equivalent allowlist value (cb0ba51)
• name rules by their readable name in generated output (3b196d8)
• md082: add allow-parent-headings to accept a heading with subsections (662d570)
• md040: add custom-languages for fence labels Linguist does not know (1eda9f4)
• md086: add rule for unclosed comment delimiters (6cbd27f)
• md057: report relative links that point at their own file (7fd85fe)
• lsp: report inline config problems as diagnostics (20acc02)

Fixed

• md063: name the documented style spellings when a style is invalid (5476db8)
• md013: exempt an HTML-only line in a blockquote inside a list item (98e5d34)
• md013: exempt nested standalone links (3be374e)
• md013: adjust paragraph reflow limit for common indent (2f7c68e)
• md032: avoid warning on pseudo-list markers after recognized lists (71e6ff5)
• md062: preserve parentheses in link destinations (8ec2eea)
• md051: resolve cross-file links whose path carries a query string (8876d46)
• md051,md057: read frontmatter in documents that hold no body links (5f35562)
• md040: take disabled fences out of the label vote by the shared state (dd7011d)
• md040: honor a rule alias in a disable comment (7b86267)
• md040: reject custom-languages entries containing whitespace (651a7ec)
• md040: stop normalizing fence labels to an invalid preferred alias (7c10626)
• config: apply map-valued rule options set in rumdl.toml (a8ff5b6)
• inline-config: ignore directives inside indented code blocks (fee4d6f)
• config: warn when an inline enable targets a per-file-ignored rule (3c3837f)
• lsp: measure diagnostic positions in UTF-16 code units (3cb34b4)
• comments: read an unclosed comment in a container body, not in code (85bd3f8)
• comments: hide the block an unclosed <!-- opens from every rule (27c247c)
• md086: keep reporting an Obsidian opener below an unclosed HTML one (a05dff9)
• md086: don't report a comment opener the other syntax hides (4d589a1)
• comments: ignore Obsidian comment delimiters inside front matter (441a0a4)
• comments: ignore comment delimiters inside front matter (dded694)
• comments: end an HTML comment at the first --> after the opener (274166a)
• md057: keep search paths a fallback when matching a link to its own file (26e88cc)
• md057: anchor reference definition fixes to the link destination (b930b71)
• lsp: use defaults when a workspace root's own scope cannot be resolved (d1777ce)
• cli: count fixes a document enables with an inline configure-file comment (f17a5eb)
• lsp: resolve a secondary workspace root's own configuration (41b9a22)
• cli: count an unloadable subdirectory config as a config warning (648aa72)
• md041: report the fix capability its opt-in fix enables (ed30c9a)
• lsp: resolve workspace configuration from the workspace root (8e0fcee)

Performance

• md062,lint-context: scan link escapes in one forward pass (8fff82b)

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

• md084: flag deprecated and markup-unsuitable Unicode code points (bac271b)
• md013: measure reflowed lines with the check's length exemptions (2063a81)

Fixed

• md013: take the space before an inline span from the source (038dc39)
• md084: report invisible characters orphaned mid-line by an annotation delimiter (a3e6152)
• md084: keep orphaned selectors visible beside an annotation delimiter (4a2dec0)
• md084: keep the removal fix for invisible deprecated code points (ab37e5d)
• md013: keep protecting an element a reflow break carried forward (d86470b)
• md013: break semantic lines only where the source has whitespace (3fd88b7)

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: stop reading gitignores above the repository root (2ff6e98)
• cli: lint markdown files whose extension is capitalized (baece97)
• cli: report why a run checked no markdown files (f0a0c61)
• md013: keep a quoted question inside its sentence when splitting (2cef5ec)

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

• md013: keep every word when a sentence boundary falls inside emphasis (207823b)
• md037: don't flag text between emphasis spans when a span wraps (17db4f9)

Changed

• md013: reflow output changed for emphasis spanning several sentences. In sentence-per-line and semantic-line-breaks modes, **First. Second.** now becomes **First.\nSecond.** instead of **First.**\n**Second.**. Reopening the markers on each line replaced the sentence-separating space with a marker pair, which deleted the space and, on many inputs, whole words. A line break inside a span is whitespace in CommonMark, so the rendered output is unchanged.

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: read .editorconfig when a project opts in (c215175)
• md085: add opt-in rule for paragraph continuation indentation (f929e82)
• md063: add sentence-case-restart-after option (498d922)
• md041: add allow-preamble option (72ca4f4)
• md013: add math-blocks option to exempt display math from the length check (e75ea67)

Fixed

• md013: don't reflow display math blocks or the prose written against their delimiters (bda0cc5, c03c883)
• watch: re-run when a config above the watched path changes (d085756)
• lsp: stop caching a config that could not be resolved (151f8e2)
• lsp: resolve to defaults when a file's config cannot be loaded (76165f9)
• lsp: surface a broken user config instead of falling back to a parent (0c315ea)
• lsp: resolve a discovered config the same way the CLI does (a6724d2)
• md013: wrap paragraphs before numbers that only look like list markers (099a900)
• md037,md052: check emphasis and references inside table cells (0e4859c)

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

• invisiblechars: new rule MD084 for detecting invisible characters (#758) (0a6354a)

Fixed

• md084: treat a zero width joiner between visible characters as presentation (4fbb1cc)
• md084: keep attached variation selectors in consecutive-character detection (f4e9fd3)
• md084: don't flag variation selectors attached to a base character (14941bb)

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

• mojibake: new rule MD083 for mojibake detection (#753) (552842b)

Fixed

• lint_context: prevent panic when HTML tag window splits a UTF-8 char (d14b252)

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

• flavor: add Hugo flavor and skip block attribute lists in blanks-around rules (e6bb033)

Fixed

• md044: recognize indented HTML comments so links and code escape the rule (3d6191c)
• md013: keep an attr list whole inside a wrapped span (e06f03d)
• md013: keep a reference-style link whole inside a wrapped span (de42709)
• md013: wrap an over-long span whose whole content is another span (f6c7c9c)

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

• md003: consume the setext underline when converting a heading to ATX. Converting a setext heading left the underline behind, where a following blank line turned it into a thematic break, so rumdl fmt added a horizontal rule the document never had (7363c34)
• md077: stop scoping list items inside blockquotes, which made a lazy continuation line gain indentation on every pass so the formatter never converged (58fb25b)
• reflow: keep wiki links, shortcodes and math whole inside a wrapped span (db12c2c)
• config: honor the documented MD033 table_allowed alias, which silently dropped the configured value (db2c204)
• config: stop reporting MD013's documented semantic-link-understanding alias as an unknown option (1539a64)
• parity: make the markdownlint comparison harness actually run (182763c)

Documentation

• md013: document that ignore-link-urls affects reporting only. Reflow measures the markdown as written, matching prettier and mdformat (c4f8bad)

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: expand ~ to the home directory in path settings (70f91aa)

Fixed

• md013: wrap over-long emphasis spans that contain nested markup (ddc73f4)
• discovery: strip Windows verbatim prefix from canonicalized paths (a85ab87)
• discovery: apply absolute exclude patterns during directory discovery (0d20fc8)

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

• md044: add ignore-frontmatter-fields option (b664e5a)
• config: warn when an inline enable cannot re-enable a config-disabled rule (a74a923)

Fixed

• md044: stop flagging proper names inside frontmatter file paths (35649d9)
• md022: stop panicking when one blank-line requirement is unlimited (8a25eb2)
• config: report unknown option keys in inline configure-file comments (8f4c0ea)
• config: apply markdownlint-configure-file when the comment spans lines (7a023a5)
• config: honor booleans and alias keys in markdownlint-configure-file (#745) (acefc19)

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

• reflow: add atomic_spans configuration and refactor inline wrapping (#742) (aeabec1)

Changed

• BREAKING: the MD013 emphasis-spans option is renamed to atomic-spans (default true), with inverted meaning (emphasis-spans = true is now atomic-spans = false). Configs setting the old key should migrate; it is no longer recognized

Fixed

• reflow: keep code spans atomic when wrapping would collapse whitespace (d43618b)

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 shuck:format as a built-in shell formatter (5b23261)

Fixed

• wasm: stop double-converting already-character-based columns (4178cdf)
• tests: resolve String addition compilation errors under Rust 1.96 (#737) (38f36cf)

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

• cli: honor --deny-config-warnings on the stdin path (0f93ca5)
• cli: make --deny-config-warnings cover inline disable-comment rule names (96d75f5)
• cli: add --deny-config-warnings for config-file and CLI-flag problems (5045daf)
• reflow: support breaking within emphasis spans (2e8bded)

Fixed

• reflow: preserve non-breaking spaces and the space before French double punctuation (f66021f)
• cli: walk directory arguments even when file paths are also passed (d058273)
• lsp: honor line anchors in goto-definition (17a21e7)
• md077: attribute middle-level continuation lines to their own list item (c73763b)

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: restore shuck as a built-in shell linter (da66447)

Performance

• reflow: probe inline math at the cursor instead of rescanning the suffix (1e6ea3b)
• reflow: merge emphasis and code span extraction into a single cmark pass (8e03537)
• reflow: optimize MyST inline role parsing using pre-extracted code spans (e966899)

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

• md044: stop flagging proper names inside bare URLs (5e9b51a)
• md040: recognize file-extension fence labels as known languages (686ba20)
• cli: replace unhelpful panic message with an actionable one (#717) (37ac880)
• reflow: re-search cached inline-math after a dollar sign (a30a4f9)
• reflow: support multiple backticks and optimize code span parsing (81944c5)
• md013: stop reflow from starting lines with block markers (eebd18b)

Performance

• reflow: implement cached match lookups to prevent quadratic suffix scanning (1cc8d2b)

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

• md032: stop flagging ordered lists nested in MkDocs admonitions (80f896e)
• md013: recognize sentence boundaries followed by footnote references (04a8c78)
• md036,md023: skip admonition and content tab bodies under MkDocs flavor (e8d1421)
• md040: recognize py and py3 as Python language aliases (6e7f8bf)
• md057: anchor URL extraction so links cannot borrow a sibling's destination (5a643ca)

Performance

• reflow: skip pulldown-cmark parses when a span kind cannot be present (66d7f7b)

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

• action: install rumdl from GitHub Releases instead of pip (7f69695)

Performance

• reflow: optimize inline code mask calculation using pre-extracted spans (27e5507)

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

• MD007: clamp explicit fixed-style indent under ordered parents (1f3a32d)

Fixed

• lint-context: keep lazy continuation lines in their list block (a17f0af)

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

• lint-context: keep indented continuation lines when a different list type follows (5dd3c3f)
• MD013: treat tabs and extra spaces after a list marker as marker padding (f0f97a2)

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

• md043: report each heading mismatch via sequence alignment (d46dbef)

Fixed

• lsp: isolate rule panics from the document lint path (020d4a2)
• prevent stack overflow on deeply nested blockquote markers (1dd3ce5)
• write fixes atomically and exit non-zero on unreadable files (085d7fe)
• per-file-ignores: enforce centrally in the fix coordinator (c4b9899)
• fmt: honor per-file-ignores on the stdin pipeline (5b5e779)
• fmt: honor per-file-ignores in the fix pipeline (cb2d7f7)
• md043: say 'pattern position' in unsatisfied-wildcard warnings (9ffc105)

Performance

• md013: drop the per-check heading lookup allocation (f76a209)
• make semantic-line-break reflow iterative (5692564)
• md077: compute list-continuation ranges in linear time (d36b017)

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: detect latent list markers past an unstable heading (05d273e)
• MD013: keep reference-style links atomic when reflowing (a991a71)

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

• wasi: add wasi build feature, make target, and CI coverage (8b9b027)
• lsp: add enableSymbols setting to gate symbol providers (b80f001)

Fixed

• workspace-index: make cache temp file names unique per write (d3aa269)
• allow building for WASI (8d0b44a)
• MD060: preserve trailing blank lines and skip table-free content (0223b30)

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: document LSP settings and scope link-completion triggers (18fae1b)
• MD013: reflow lists with configured marker spacing (#692) (b00b117)

Fixed

• MD052: preserve author casing in undefined-reference messages (6d1cb96)
• MD013: preserve single-tilde strikethrough content during reflow (#701) (a2387ce)
• rules: resolve complex link handling in reflow and MD052 (#702) (d57a61a)
• rules: prevent front-matter and skippable region leakage (#699) (e09fa06)
• MD007: align nested lists to a widened parent's content column (#700) (595cc4d)

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

• MD043: report expected and actual headings at first mismatch (#696) (57f0902) - thanks @mkowen1
• MD013: add semantic-link-understanding to flag long-URL links in stern mode (#691) (f17e3f7) - thanks @chandlerc

Fixed

• MD013: extend standalone-link reflow boundary to blockquotes (74e79f6)
• MD013: treat standalone links as paragraph boundaries in reflow (#697) (39ea2b2) - thanks @chandlerc
• MD013: associate paragraph reflow fix with all violating lines (#698) (f17be35) - thanks @chandlerc
• fix-coordinator: honor inline rumdl-configure-file overrides when applying fixes (c347ab6)
• MD013: exempt standalone links with trailing punctuation and wrappers (#694) (d7a3c2e) - thanks @chandlerc
• MD013: keep the space after an inline code span before punctuation (#693) (13745db) - thanks @chandlerc
• lsp: iterate formatting fixes to a fixpoint so one format pass converges (#695) (78c42ad) - thanks @chandlerc
• MD028: make blockquote-merge autofix opt-in by default (cffadef)
• MD036: make emphasis-to-heading autofix opt-in by default (9b145a9)
• MD007: scope fence-opening exception to backtick/tilde fences (2a3a554)
• MD007: keep nested lists nested under a fence-opening list item (59f987e) - 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

• rules: add MD082 to require content between headings (e5592ae)

Fixed

• lint-context: attach list items whose marker line opens a code fence (95898f4)
• parser: parse reference-definition titles on a continuation line (fb02b52)
• cli: make per-file exclude notice verbose-only (2923e27)

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

• md077: add opt-in style = "aligned" for continuation indent (14eebe1)

Fixed

• md040: keep blockquote fences valid when adding default language (eab51f6)
• md013: keep blockquote markers when reflowing a blockquote nested in a list item (f601c8c)

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

• emphasis: align MD049 and MD037 with CommonMark flanking (#681) (d1b9968)
• ci: bump pinned Rust toolchain to 1.96.0 to unblock mise tool install (b2afd76)

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

• cli: redirect removed --list-rules to the canonical commands (7a3842d)
• parser: correct code-region detection for comments and JSX fences (17f975c)

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

• md013: add code-spans option to exempt unbreakable inline code (78896f5)
• lsp: document and workspace symbols for headings (2cef95b)

Fixed

• parser: recognize reference definitions inside blockquotes (82f4567)
• md034: don't flag reference definitions inside blockquotes (faf0fa4)
• md013: reflow list items inside blockquotes (362b5a6)

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.