Support multi-line disable descriptions

CHANGELOG.md

@@ -13,6 +13,8 @@ All notable changes to this project are documented in this file.
 - Fixed: inconsistent trailing newlines in CLI error output ([#4876](https://github.com/stylelint/stylelint/pull/4876)).
 - Fixed: `selector-max-*` (except `selector-max-type`) false negatives for `where`, `is`, `nth-child` and `nth-last-child` ([#4842](https://github.com/stylelint/stylelint/pull/4842)).
 - Fixed: `length-zero-no-unit` TypeError for custom properties fallback ([#4860](https://github.com/stylelint/stylelint/pull/4860)).
+- Fixed: false negatives for `where`, `is`, `nth-child` and `nth-last-child` in `selector-max-*` rules (except selector-max-type) ([#4842](https://github.com/stylelint/stylelint/pull/4842)).
+- Fixed: support for multi-line disable descriptions ([#4895](https://github.com/stylelint/stylelint/pull/4895)).
 
 ## 13.6.1
 

lib/__tests__/disableRanges.test.js

@@ -747,6 +747,32 @@ it('SCSS // line-disabling comment (with description)', () => {
 		});
 });
 
+it('SCSS // disable next-line comment (with multi-line description)', () => {
+	const scssSource = `a {
+    // stylelint-disable-next-line declaration-no-important
+    // --
+    // Long-winded description
+    color: pink !important;
+  }`;
+
+	return postcss()
+		.use(assignDisabledRanges)
+		.process(scssSource, { syntax: scss, from: undefined })
+		.then((result) => {
+			expect(result.stylelint.disabledRanges).toEqual({
+				all: [],
+				'declaration-no-important': [
+					{
+						start: 5,
+						end: 5,
+						strictStart: true,
+						strictEnd: true,
+					},
+				],
+			});
+		});
+});
+
 it('Less // line-disabling comment (with description)', () => {
 	const lessSource = `a {
     color: pink !important; // stylelint-disable-line declaration-no-important -- Description
@@ -770,6 +796,32 @@ it('Less // line-disabling comment (with description)', () => {
 		});
 });
 
+it('Less // disable next-line comment (with multi-line description)', () => {
+	const lessSource = `a {
+    // stylelint-disable-next-line declaration-no-important
+    // --
+    // Long-winded description
+    color: pink !important;
+  }`;
+
+	return postcss()
+		.use(assignDisabledRanges)
+		.process(lessSource, { syntax: less, from: undefined })
+		.then((result) => {
+			expect(result.stylelint.disabledRanges).toEqual({
+				all: [],
+				'declaration-no-important': [
+					{
+						start: 5,
+						end: 5,
+						strictStart: true,
+						strictEnd: true,
+					},
+				],
+			});
+		});
+});
+
 function testDisableRanges(source, cb) {
 	return postcss().use(assignDisabledRanges).process(source, { from: undefined }).then(cb);
 }

lib/assignDisabledRanges.js

@@ -9,7 +9,7 @@ const disableLineCommand = `${COMMAND_PREFIX}disable-line`;
 const disableNextLineCommand = `${COMMAND_PREFIX}disable-next-line`;
 const ALL_RULES = 'all';
 
-/** @typedef {import('postcss').Comment} PostcssComment */
+/** @typedef {import('postcss/lib/comment')} PostcssComment */
 /** @typedef {import('postcss').Root} PostcssRoot */
 /** @typedef {import('stylelint').PostcssResult} PostcssResult */
 /** @typedef {import('stylelint').DisabledRangeObject} DisabledRangeObject */
@@ -53,10 +53,53 @@ module.exports = function (root, result) {
 	};
 
 	result.stylelint.disabledRanges = disabledRanges;
-	root.walkComments(checkComment);
+
+	// Work around postcss/postcss-scss#109 by merging adjacent `//` comments
+	// into a single node before passing to `checkComment`.
+
+	/** @type {PostcssComment?} */
+	let inlineEnd;
+
+	root.walkComments((/** @type {PostcssComment} */ comment) => {
+		if (inlineEnd) {
+			// Ignore comments already processed by grouping with a previous one.
+			if (inlineEnd === comment) inlineEnd = null;
+		} else if (isInlineComment(comment)) {
+			const fullComment = comment.clone();
+			let next = comment.next();
+
+			while (next && next.type === 'comment') {
+				/** @type {PostcssComment} */
+				const current = next;
+
+				if (!isInlineComment(current)) break;
+
+				fullComment.text += `\n${current.text}`;
+
+				if (fullComment.source && current.source) {
+					fullComment.source.end = current.source.end;
+				}
+
+				inlineEnd = current;
+				next = current.next();
+			}
+			checkComment(fullComment);
+		} else {
+			checkComment(comment);
+		}
+	});
 
 	return result;
 
+	/**
+	 * @param {PostcssComment} comment
+	 */
+	function isInlineComment(comment) {
+		// We check both here because the Sass parser uses `raws.inline` to indicate
+		// inline comments, while the Less parser uses `inline`.
+		return comment.inline || comment.raws.inline;
+	}
+
 	/**
 	 * @param {PostcssComment} comment
 	 */
@@ -74,8 +117,8 @@ module.exports = function (root, result) {
 	 * @param {PostcssComment} comment
 	 */
 	function processDisableNextLineCommand(comment) {
-		if (comment.source && comment.source.start) {
-			const line = comment.source.start.line;
+		if (comment.source && comment.source.end) {
+			const line = comment.source.end.line;
 
 			getCommandRules(disableNextLineCommand, comment.text).forEach((ruleName) => {
 				disableLine(line + 1, ruleName, comment);

types/postcss/index.d.ts

@@ -1,3 +1,20 @@
+declare module 'postcss/lib/comment' {
+	import { Comment, NodeRaws } from 'postcss';
+
+	interface NodeRawsExt extends NodeRaws {
+		// Used by the SCSS parser to indicate `//` comments.
+		inline?: boolean;
+	}
+
+	interface CommentExt extends Comment {
+		// Used by the Less parser to indicate `//` comments.
+		inline?: boolean;
+		raws: NodeRawsExt;
+	}
+
+	export = CommentExt;
+}
+
 declare module 'postcss/lib/lazy-result' {
 	import {
 		LazyResult,