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+# PostCSS IC Unit [<img src="https://postcss.github.io/postcss/logo.svg" alt="PostCSS Logo" width="90" height="90" align="right">][postcss]
+
+
+[<img alt="npm version" src="https://img.shields.io/npm/v/@csstools/postcss-ic-unit.svg" height="20">][npm-url]
+[<img alt="CSS Standard Status" src="https://cssdb.org/images/badges/ic-unit.svg" height="20">][css-url]
+[<img alt="Build Status" src="https://github.com/csstools/postcss-plugins/workflows/test/badge.svg" height="20">][cli-url]
+[<img alt="Discord" src="https://shields.io/badge/Discord-5865F2?logo=discord&logoColor=white">][discord]
+
+[PostCSS IC Unit] lets you use the ic length unit, following the [CSS Values and Units Module] specification.
+
+```pcss
+p {
+  text-indent: 2ic;
+}
+
+.bubble {
+  width: calc(8ic + 20px);
+}
+
+/* becomes */
+p {
+  text-indent: 2em;
+}
+
+.bubble {
+  width: calc(8em + 20px);
+}
+```
+
+_See prior work by [JLHwung](https://github.com/JLHwung) here [postcss-ic-unit](https://github.com/JLHwung/postcss-ic-unit)
+To ensure long term maintenance and to provide the needed features this plugin was recreated based on JLHwung's work._
+
+## Usage
+
+Add [PostCSS IC Unit] to your project:
+
+```bash
+npm install postcss @csstools/postcss-ic-unit --save-dev
+```
+
+Use it as a [PostCSS] plugin:
+
+```js
+const postcss = require('postcss');
+const postcssIcUnit = require('@csstools/postcss-ic-unit');
+
+postcss([
+  postcssIcUnit(/* pluginOptions */)
+]).process(YOUR_CSS /*, processOptions */);
+```
+
+[PostCSS IC Unit] runs in all Node environments, with special
+instructions for:
+
+| [Node](INSTALL.md#node) | [PostCSS CLI](INSTALL.md#postcss-cli) | [Webpack](INSTALL.md#webpack) | [Gulp](INSTALL.md#gulp) | [Grunt](INSTALL.md#grunt) |
+| --- | --- | --- | --- | --- |
+
+## Options
+
+### preserve
+
+The `preserve` option determines whether the original source
+is preserved. By default, it is not preserved.
+
+```js
+postcssIcUnit({ preserve: true })
+```
+
+```pcss
+p {
+  text-indent: 2ic;
+}
+
+/* becomes */
+
+p {
+  text-indent: 2em;
+  text-indent: 2ic;
+}
+```
+
+[postcss]: https://github.com/postcss/postcss
+
+[cli-url]: https://github.com/csstools/postcss-plugins/actions/workflows/test.yml?query=workflow/test
+[css-url]: https://cssdb.org/#ic-unit
+[discord]: https://discord.gg/bUadyRwkJS
+[npm-url]: https://www.npmjs.com/package/@csstools/postcss-ic-unit
+
+[Gulp PostCSS]: https://github.com/postcss/gulp-postcss
+[Grunt PostCSS]: https://github.com/nDmitry/grunt-postcss
+[PostCSS]: https://github.com/postcss/postcss
+[PostCSS Loader]: https://github.com/postcss/postcss-loader
+[CSS Values and Units Module]: https://www.w3.org/TR/css-values-4/#ic
+[PostCSS IC Unit]: https://github.com/csstools/postcss-plugins/tree/main/plugins/postcss-ic-unit