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stylelint

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A mighty, modern CSS linter.

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stylelint/stylelint

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# value-list-comma-space-before Require a single space or disallow whitespace before the commas of value lists. <!-- prettier-ignore --> ```css a { background-size: 0 ,0; } /** ↑ * The space before this comma */ ``` The [`fix` option](../../../docs/user-guide/usage/options.md#fix) can automatically fix most of the problems reported by this rule. ## Options `string`: `"always"|"never"|"always-single-line"|"never-single-line"` ### `"always"` There _must always_ be a single space before the commas. The following patterns are considered violations: <!-- prettier-ignore --> ```css a { background-size: 0,0; } ``` <!-- prettier-ignore --> ```css a { background-size: 0 , 0; } ``` The following patterns are _not_ considered violations: <!-- prettier-ignore --> ```css a { background-size: 0 ,0; } ``` <!-- prettier-ignore --> ```css a { background-size: 0 , 0; } ``` ### `"never"` There _must never_ be whitespace before the commas. The following patterns are considered violations: <!-- prettier-ignore --> ```css a { background-size: 0 ,0; } ``` <!-- prettier-ignore --> ```css a { background-size: 0 , 0; } ``` The following patterns are _not_ considered violations: <!-- prettier-ignore --> ```css a { background-size: 0,0; } ``` <!-- prettier-ignore --> ```css a { background-size: 0, 0; } ``` ### `"always-single-line"` There _must always_ be a single space before the commas in single-line value lists. The following patterns are considered violations: <!-- prettier-ignore --> ```css a { background-size: 0,0; } ``` The following patterns are _not_ considered violations: <!-- prettier-ignore --> ```css a { background-size: 0 ,0; } ``` <!-- prettier-ignore --> ```css a { background-size: 0 , 0; } ``` <!-- prettier-ignore --> ```css a { background-size: 0 , 0; } ``` ### `"never-single-line"` There _must never_ be whitespace before the commas in single-line value lists. The following patterns are considered violations: <!-- prettier-ignore --> ```css a { background-size: 0 ,0; } ``` The following patterns are _not_ considered violations: <!-- prettier-ignore --> ```css a { background-size: 0,0; } ``` <!-- prettier-ignore --> ```css a { background-size: 0, 0; } ``` <!-- prettier-ignore --> ```css a { background-size: 0 , 0; } ```