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+<div align="center">
+  <img width="150" height="150" title="PostHTML" src="https://posthtml.github.io/posthtml/logo.svg">
+  <h1>posthtml-match-helper</h1>
+  
+  Expand CSS selectors into PostHTML matcher objects
+
+  [![Version][npm-version-shield]][npm]
+  [![Build][github-ci-shield]][github-ci]
+  [![License][license-shield]][license]
+  [![Downloads][npm-stats-shield]][npm-stats]
+</div>
+
+## Introduction
+
+This PostHTML plugin can turn simple CSS selectors into [matcher objects](https://github.com/posthtml/posthtml/blob/master/README.md#match).
+
+Supported features:
+
+* Tags: `"div"` returns `{tag: "div"}`.
+* Ids: `"#bar"` returns `{attrs: {id: "bar"}}`.
+* Classes: `.foo` returns `{attrs: { class: /(?:^|\s)foo(?:\\s|$)/ }}`. Any number of classnames supported.
+* Attribute selectors: any number of standard [attribute selectors](https://developer.mozilla.org/en/docs/Web/CSS/Attribute_selectors) can be used<sup><a href="#attribute_selectors_footnote">1</a></sup> including the following non-standard:
+   * `[attr!=value]`: matches attributes with values that do not contain `value`.
+* Multiple node selectors: `"div, span"` returns `[{tag: "div"}, {tag: "span"}]`.
+
+**<sup><a name="attribute_selectors_footnote">1</a></sup>** Multiple attribute selectors for the same attribute are not supported (this includes mixing classnames and attribute selectors matching `class`).
+
+The basic template for selectors (and order of features) looks like this:
+
+```js
+"tag#id.class.name[attr*=value][otherattr^='start']"
+```
+
+## Basic usage
+
+```js
+import matchHelper from "posthtml-match-helper";
+
+tree.match(matchHelper("div.class"), function (node) {
+  // do stuff with matched node...
+});
+```
+
+## Advanced usage
+
+```js
+import matchHelper from "posthtml-match-helper";
+
+tree.match(matchHelper("input.my-control[type!='radio'][checked], input[value^='foo'][checked]"), function (node) {
+  // do stuff with node that matched either of the selectors...
+});
+```
+
+## Classnames with escaped characters
+
+If you need to match nodes with classnames that use escaped characters, like those in Tailwind CSS utilities with arbitrary values, use the following syntax:
+
+```js
+import matchHelper from "posthtml-match-helper";
+
+tree.match(matchHelper("input.\\[display:none\\]"), function (node) {
+  // do stuff with node that matched either of the selectors...
+});
+```
+
+
+## The helper function
+
+#### Arguments
+
+* `matcher` (string) - A CSS selector that describes the node you want to match in PostHTML.
+
+#### Returns
+
+A matcher object or an array of matcher objects.
+
+[npm]: https://www.npmjs.com/package/posthtml-match-helper
+[npm-version-shield]: https://img.shields.io/npm/v/posthtml-match-helper.svg
+[npm-stats]: http://npm-stat.com/charts.html?package=posthtml-match-helper
+[npm-stats-shield]: https://img.shields.io/npm/dt/posthtml-match-helper.svg
+[github-ci]: https://github.com/posthtml/posthtml-match-helper/actions/workflows/nodejs.yml
+[github-ci-shield]: https://github.com/posthtml/posthtml-match-helper/actions/workflows/nodejs.yml/badge.svg
+[license]: ./LICENSE
+[license-shield]: https://img.shields.io/npm/l/posthtml-match-helper.svg