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string-quotes

Specify single or double quotes around strings.

a[id="foo"] { content: "x"; }
/** ↑ ↑ ↑ ↑
* These quotes and these quotes */

Quotes within comments are ignored.

/* "This is fine" */
/* 'And this is also fine' */

Single quotes in a charset @-rule are ignored as using single quotes in this context is incorrect according the CSS specification.

@charset "utf-8"
/* fine regardless of configuration */

The fix option can automatically fix most of the problems reported by this rule.

Options

string: "single"|"double"

"single"

Strings must always be wrapped with single quotes.

The following patterns are considered problems:

a { content: "x"; }
a[id="foo"] {}

The following patterns are not considered problems:

a { content: 'x'; }
a[id='foo'] {}
a { content: "x'y'z"; }

"double"

Strings must always be wrapped with double quotes.

The following patterns are considered problems:

a { content: 'x'; }
a[id='foo'] {}

The following patterns are not considered problems:

a { content: "x"; }
a[id="foo"] {}
a { content: 'x"y"z'; }

Optional secondary options

avoidEscape: true|false, defaults to true

Allows strings to use single-quotes or double-quotes so long as the string contains a quote that would have to be escaped otherwise.

For example, with "single", { "avoidEscape" : false }.

The following patterns are considered problems:

a { content: "x'y'z"; }
a[id="foo'bar'baz"] {}

The following patterns are not considered problems:

a { content: 'x'; }
a[id='foo'] {}