Bad regex in DefaultExtractor matches special characters

[SebastianS90]

The default extractor regex in version v0.16.0 is /[A-z0-9-]+/g

The range A-z includes all ascii characters between A (65) and z (122), in particular also the range from 91 to 96, which is [ \ ] ^ _ `

This was probably not intended. I would suggest the following regex: /[A-Za-z0-9-]+/g

'foo[bar] foo^bar foo`bar`baz'.match(/[A-z0-9-]+/g)
~> [ 'foo[bar]', 'foo^bar', 'foo`bar`baz' ]

'foo[bar] foo^bar foo`bar`baz'.match(/[A-Za-z0-9-]+/g)
~> [ 'foo', 'bar', 'foo', 'bar', 'foo', 'bar', 'baz' ]

See also: FullHuman/purgecss-webpack-plugin#7

[Ffloriel]

Thank you for reporting the issue. It's actually a known issue thanks to FullHuman/purgecss-webpack-plugin#7.

As suggested by @jsnanigans, the default extractor will be modified to /[A-Za-z0-9_-]+/g.
_ is commonly used for css selectors, especially with the bem methodology.

[Ffloriel]

The default extractor has been modified in the latest version: 0.18.0.