+++ /dev/null
-# function-url-scheme-blacklist
-
-Specify a blacklist of disallowed URL schemes.
-
-```css
-a { background-image: url('http://www.example.com/file.jpg'); }
-/** ↑
- * This URL scheme */
-```
-
-A [URL scheme](https://url.spec.whatwg.org/#syntax-url-scheme) consists of alphanumeric, `+`, `-`, and `.` characters. It can appear at the start of a URL and is followed by `:`.
-
-This rule treats URL schemes as case insensitive (`https` and `HTTPS` are the same).
-
-This rule ignores URL arguments without an existing URL scheme.
-
-This rule ignores URL arguments with variables or variable interpolation (`$sass`, `@less`, `--custom-property`, `#{$var}`, `@{var}`, `$(var)`).
-
-## Options
-
-`array|string|regex`: `["array", "of", "schemes" or "regex"]|"scheme"|/regex/`
-
-Given:
-
-```js
-["ftp", "/^http/"]
-```
-
-The following patterns are considered violations:
-
-```css
-a { background-image: url('ftp://www.example.com/file.jpg'); }
-```
-
-```css
-a { background-image: url('http://www.example.com/file.jpg'); }
-```
-
-```css
-a { background-image: url('https://www.example.com/file.jpg'); }
-```
-
-The following patterns are *not* considered violations:
-
-```css
-a { background-image: url('data:image/gif;base64,R0lGODlhAQABAIAAAAUEBAAAACwAAAAAAQABAAACAkQBADs='); }
-```
-
-```css
-a { background-image: url('example.com/file.jpg'); }
-```
-
-```css
-a { background-image: url('/example.com/file.jpg'); }
-```
-
-```css
-a { background-image: url('//example.com/file.jpg'); }
-```
-
-```css
-a { background-image: url('./path/to/file.jpg'); }
-```