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69 lines
1.3 KiB
Markdown
69 lines
1.3 KiB
Markdown
# font-family-no-duplicate-names
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Disallow duplicate font family names.
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```css
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a { font-family: serif, serif; }
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/** ↑ ↑
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* These font family names */
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```
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This rule checks the `font` and `font-family` properties.
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This rule ignores `$sass`, `@less`, and `var(--custom-property)` variable syntaxes.
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**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.
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## Options
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### `true`
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The following patterns are considered warnings:
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```css
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a { font-family: 'Times', Times, serif; }
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```
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```css
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a { font: 1em "Arial", 'Arial', sans-serif; }
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```
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```css
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a { font: normal 14px/32px -apple-system, BlinkMacSystemFont, sans-serif, sans-serif; }
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```
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The following patterns are *not* considered warnings:
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```css
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a { font-family: Times, serif; }
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```
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```css
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a { font: 1em "Arial", "sans-serif", sans-serif; }
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```
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```css
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a { font: normal 14px/32px -apple-system, BlinkMacSystemFont, sans-serif; }
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```
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## Optional secondary options
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### `ignoreFontFamilyNames: ["/regex/", "string"]`
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Given:
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```js
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["/^My Font /", "monospace"]
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```
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The following patterns are *not* considered warnings:
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```css
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font-family: monospace, monospace
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```
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```css
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font-family: "My Font Family", "My Font Family", monospace
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```
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