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font-family-no-duplicate-names
Disallow duplicate font family names.
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 warnings:
a { font-family: 'Times', Times, serif; }
a { font: 1em "Arial", 'Arial', sans-serif; }
a { font: normal 14px/32px -apple-system, BlinkMacSystemFont, sans-serif, sans-serif; }
The following patterns are not considered warnings:
a { font-family: Times, serif; }
a { font: 1em "Arial", "sans-serif", sans-serif; }
a { font: normal 14px/32px -apple-system, BlinkMacSystemFont, sans-serif; }
Optional secondary options
ignoreFontFamilyNames: ["/regex/", "string"]
Given:
["/^My Font /", "monospace"]
The following patterns are not considered warnings:
font-family: monospace, monospace
font-family: "My Font Family", "My Font Family", monospace