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stylelint

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Modern CSS linter

github.com/stylelint/stylelint

stylelint/stylelint

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# value-list-comma-newline-before Require a newline or disallow whitespace before the commas of value lists. ```css a { background-size: 0 , 0; } /** ↑ * The newline before these commas */ ``` ## Options `string`: `"always"|"always-multi-line"|"never-multi-line"` ### `"always"` There *must always* be a newline before the commas. The following patterns are considered warnings: ```css a { background-size: 0,0; } ``` ```css a { background-size: 0, 0; } ``` The following patterns are *not* considered warnings: ```css a { background-size: 0 , 0; } ``` ### `"always-multi-line"` There *must always* be a newline before the commas in multi-line value lists. The following patterns are considered warnings: ```css a { background-size: 0, 0; } ``` The following patterns are *not* considered warnings: ```css a { background-size: 0, 0; } ``` ```css a { background-size: 0,0; } ``` ```css a { background-size: 0 , 0; } ``` ### `"never-multi-line"` There *must never* be whitespace before the commas in multi-line value lists. The following patterns are considered warnings: ```css a { background-size: 0 , 0; } ``` The following patterns are *not* considered warnings: ```css a { background-size: 0,0; } ``` ```css a { background-size: 0, 0; } ``` ```css a { background-size: 0, 0; } ```