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- # expand-brackets [](https://www.npmjs.com/package/expand-brackets) [](https://npmjs.org/package/expand-brackets) [](https://travis-ci.org/jonschlinkert/expand-brackets)
- > Expand POSIX bracket expressions (character classes) in glob patterns.
- ## Install
- Install with [npm](https://www.npmjs.com/):
- ```sh
- $ npm install expand-brackets --save
- ```
- ## Usage
- ```js
- var brackets = require('expand-brackets');
- brackets('[![:lower:]]');
- //=> '[^a-z]'
- ```
- ## .isMatch
- Return true if the given string matches the bracket expression:
- ```js
- brackets.isMatch('A', '[![:lower:]]');
- //=> true
- brackets.isMatch('a', '[![:lower:]]');
- //=> false
- ```
- ## .makeRe
- Make a regular expression from a bracket expression:
- ```js
- brackets.makeRe('[![:lower:]]');
- //=> /[^a-z]/
- ```
- The following named POSIX bracket expressions are supported:
- * `[:alnum:]`: Alphanumeric characters (`a-zA-Z0-9]`)
- * `[:alpha:]`: Alphabetic characters (`a-zA-Z]`)
- * `[:blank:]`: Space and tab (`[ t]`)
- * `[:digit:]`: Digits (`[0-9]`)
- * `[:lower:]`: Lowercase letters (`[a-z]`)
- * `[:punct:]`: Punctuation and symbols. (`[!"#$%&'()*+, -./:;<=>?@ [\]^_``{|}~]`)
- * `[:upper:]`: Uppercase letters (`[A-Z]`)
- * `[:word:]`: Word characters (letters, numbers and underscores) (`[A-Za-z0-9_]`)
- * `[:xdigit:]`: Hexadecimal digits (`[A-Fa-f0-9]`)
- Collating sequences are not supported.
- ## Related projects
- You might also be interested in these projects:
- * [extglob](https://www.npmjs.com/package/extglob): Convert extended globs to regex-compatible strings. Add (almost) the expressive power of regular expressions to… [more](https://www.npmjs.com/package/extglob) | [homepage](https://github.com/jonschlinkert/extglob)
- * [is-extglob](https://www.npmjs.com/package/is-extglob): Returns true if a string has an extglob. | [homepage](https://github.com/jonschlinkert/is-extglob)
- * [is-glob](https://www.npmjs.com/package/is-glob): Returns `true` if the given string looks like a glob pattern or an extglob pattern.… [more](https://www.npmjs.com/package/is-glob) | [homepage](https://github.com/jonschlinkert/is-glob)
- * [is-posix-bracket](https://www.npmjs.com/package/is-posix-bracket): Returns true if the given string is a POSIX bracket expression (POSIX character class). | [homepage](https://github.com/jonschlinkert/is-posix-bracket)
- * [micromatch](https://www.npmjs.com/package/micromatch): Glob matching for javascript/node.js. A drop-in replacement and faster alternative to minimatch and multimatch. Just… [more](https://www.npmjs.com/package/micromatch) | [homepage](https://github.com/jonschlinkert/micromatch)
- ## Contributing
- Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](https://github.com/jonschlinkert/expand-brackets/issues/new).
- ## Building docs
- Generate readme and API documentation with [verb](https://github.com/verbose/verb):
- ```sh
- $ npm install verb && npm run docs
- ```
- Or, if [verb](https://github.com/verbose/verb) is installed globally:
- ```sh
- $ verb
- ```
- ## Running tests
- Install dev dependencies:
- ```sh
- $ npm install -d && npm test
- ```
- ## Author
- **Jon Schlinkert**
- * [github/jonschlinkert](https://github.com/jonschlinkert)
- * [twitter/jonschlinkert](http://twitter.com/jonschlinkert)
- ## License
- verb © 2016, [Jon Schlinkert](https://github.com/jonschlinkert).
- Released under the [MIT license](https://github.com/jonschlinkert/expand-brackets/blob/master/LICENSE).
- ***
- _This file was generated by [verb](https://github.com/verbose/verb), v, on April 01, 2016._
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