Prevent redundant css in the editor

packages/block-editor/src/components/global-styles/test/use-global-styles-output.js

@@ -565,9 +565,44 @@ describe( 'global styles renderer', () => {
 				},
 			};
 
-			expect( toStyles( Object.freeze( tree ), blockSelectors ) ).toEqual(
-				':where(body) {margin: 0;}.is-layout-flow > .alignleft { float: left; margin-inline-start: 0; margin-inline-end: 2em; }.is-layout-flow > .alignright { float: right; margin-inline-start: 2em; margin-inline-end: 0; }.is-layout-flow > .aligncenter { margin-left: auto !important; margin-right: auto !important; }.is-layout-constrained > .alignleft { float: left; margin-inline-start: 0; margin-inline-end: 2em; }.is-layout-constrained > .alignright { float: right; margin-inline-start: 2em; margin-inline-end: 0; }.is-layout-constrained > .aligncenter { margin-left: auto !important; margin-right: auto !important; }.is-layout-constrained > :where(:not(.alignleft):not(.alignright):not(.alignfull)) { max-width: var(--wp--style--global--content-size); margin-left: auto !important; margin-right: auto !important; }.is-layout-constrained > .alignwide { max-width: var(--wp--style--global--wide-size); }body .is-layout-flex { display:flex; }.is-layout-flex { flex-wrap: wrap; align-items: center; }.is-layout-flex > :is(*, div) { margin: 0; }body .is-layout-grid { display:grid; }.is-layout-grid > :is(*, div) { margin: 0; }' +
-					':root :where(.is-style-foo.wp-image.wp-image-spacing){padding-top: 2px;}:root :where(.is-style-foo.wp-image.wp-image-border-color){border-color: blue;}:root :where(.is-style-foo.wp-image){color: blue;}.wp-site-blocks > .alignleft { float: left; margin-right: 2em; }.wp-site-blocks > .alignright { float: right; margin-left: 2em; }.wp-site-blocks > .aligncenter { justify-content: center; margin-left: auto; margin-right: auto; }'
+			const hasBlockGapSupport = false;
+			const hasFallbackGapSupport = true;
+			const disableLayoutStyles = true;
+			const disableRootPadding = true;
+			const styleOptions = {
+				blockGap: false,
+				blockStyles: true,
+				layoutStyles: false,
+				marginReset: false,
+				presets: false,
+				rootPadding: false,
+			};
+
+			// Confirm no variation styles by default.
+			const withoutVariations = toStyles(
+				Object.freeze( tree ),
+				blockSelectors,
+				hasBlockGapSupport,
+				hasFallbackGapSupport,
+				disableLayoutStyles,
+				disableRootPadding,
+				styleOptions
+			);
+			expect( withoutVariations ).toEqual( '' );
+
+			// Includes variation styles when requested.
+			styleOptions.variationStyles = true;
+			const withVariations = toStyles(
+				Object.freeze( tree ),
+				blockSelectors,
+				hasBlockGapSupport,
+				hasFallbackGapSupport,
+				disableLayoutStyles,
+				disableRootPadding,
+				styleOptions
+			);
+			expect( withVariations ).toEqual(
+				':root :where(.is-style-foo.wp-image.wp-image-spacing){padding-top: 2px;}:root :where(.is-style-foo.wp-image.wp-image-border-color){border-color: blue;}:root :where(.is-style-foo.wp-image){color: blue;}'
 			);
 		} );
 

packages/block-editor/src/components/global-styles/use-global-styles-output.js

@@ -881,6 +881,7 @@ export const toStyles = (
 		marginReset: true,
 		presets: true,
 		rootPadding: true,
+		variationStyles: false,
 		...styleOptions,
 	};
 	const nodesWithStyles = getNodesWithStyles( tree, blockSelectors );
@@ -1010,7 +1011,7 @@ export const toStyles = (
 					);
 				}
 
-				if ( styleVariationSelectors ) {
+				if ( options.variationStyles && styleVariationSelectors ) {
 					Object.entries( styleVariationSelectors ).forEach(
 						( [ styleVariationName, styleVariationSelector ] ) => {
 							const styleVariations =

packages/block-editor/src/hooks/block-style-variation.js

@@ -116,22 +116,23 @@ function useBlockProps( { name, className, clientId } ) {
 		const hasBlockGapSupport = false;
 		const hasFallbackGapSupport = true;
 		const disableLayoutStyles = true;
-		const isTemplate = true;
+		const disableRootPadding = true;
 
 		return toStyles(
 			variationConfig,
 			blockSelectors,
 			hasBlockGapSupport,
 			hasFallbackGapSupport,
 			disableLayoutStyles,
-			isTemplate,
+			disableRootPadding,
 			{
 				blockGap: false,
 				blockStyles: true,
 				layoutStyles: false,
 				marginReset: false,
 				presets: false,
 				rootPadding: false,
+				variationStyles: true,
 			}
 		);
 	}, [ variation, settings, styles, getBlockStyles, clientId ] );