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Contents
# font-family-no-duplicate-names
Disallow duplicate font family names.
<!-- prettier-ignore -->
```css
a { font-family: serif, serif; }
/** ↑ ↑
* These font family names */
```
This rule checks the `font` and `font-family` properties.
This rule ignores `$sass`, `@less`, and `var(--custom-property)` variable syntaxes.
**Caveat:** This rule will stumble on _unquoted_ multi-word font names and _unquoted_ font names containing escape sequences. Wrap these font names in quotation marks, and everything should be fine.
## Options
### `true`
The following patterns are considered violations:
<!-- prettier-ignore -->
```css
a { font-family: 'Times', Times, serif; }
```
<!-- prettier-ignore -->
```css
a { font: 1em "Arial", 'Arial', sans-serif; }
```
<!-- prettier-ignore -->
```css
a { font: normal 14px/32px -apple-system, BlinkMacSystemFont, sans-serif, sans-serif; }
```
The following patterns are _not_ considered violations:
<!-- prettier-ignore -->
```css
a { font-family: Times, serif; }
```
<!-- prettier-ignore -->
```css
a { font: 1em "Arial", "sans-serif", sans-serif; }
```
<!-- prettier-ignore -->
```css
a { font: normal 14px/32px -apple-system, BlinkMacSystemFont, sans-serif; }
```
## Optional secondary options
### `ignoreFontFamilyNames: ["/regex/", /regex/, "string"]`
Given:
```
["/^My Font /", "monospace"]
```
The following patterns are _not_ considered violations:
<!-- prettier-ignore -->
```css
font-family: monospace, monospace
```
<!-- prettier-ignore -->
```css
font-family: "My Font Family", "My Font Family", monospace
```
Version data entries
24 entries across 24 versions & 1 rubygems