@@ -1,11 +1,11 @@
-export const lengthConv = new Map([
+const lengthConv = new Map([
   ['in', 288],
   ['px', 3],
   ['pt', 4],
   ['pc', 48],
 ]);
 
-export const metricConv = new Map([
+const metricConv = new Map([
   ['cm', 40],
   ['mm', 4],
   ['q', 1],
 
@@ -1,5 +1,5 @@
 import cssnanoUtils from 'cssnano-utils';
-import { syntaxAllowsPercentage } from './parse-syntax.js';
+import { syntaxAllowsPercentage } from './parseSyntax.js';
 import { findReplacements, stripVendorPrefix } from './findReplacements.js';
 
 const { applyEdits } = cssnanoUtils;
 
@@ -500,4 +500,12 @@ describe('@property initial-value', () => {
       `@property --test{syntax:/* a */ '<length>' /* b */;inherits:false;initial-value:0;}`
     )
   );
+
+  test(
+    'should reuse cached syntax evaluation for multiple initial-value declarations in @property',
+    processCSS(
+      `@property --percent{syntax:'<percentage>';inherits:false;initial-value:0%;initial-value:0%;}`,
+      `@property --percent{syntax:'<percentage>';inherits:false;initial-value:0%;initial-value:0%;}`
+    )
+  );
 });
@@ -131,6 +131,9 @@ describe('Escaped and case-insensitive function names', () => {
 
     const mozResult = await processor('div{width:-moz-calc(100% - 0px)}');
     assert.equal(mozResult.css, 'div{width:-moz-calc(100% - 0px)}');
+
+    const oResult = await processor('div{width:-o-calc(100% - 0px)}');
+    assert.equal(oResult.css, 'div{width:-o-calc(100% - 0px)}');
   });
 
   test('should preserve zero units in vendor-prefixed conic-gradient names', async () => {
@@ -383,6 +386,13 @@ describe('Math functions and preserving units', () => {
     )
   );
 
+  test(
+    'should preserve zero length and percentage units in anchor-size() fallbacks',
+    passthroughCSS(
+      'h1{width:anchor-size(--target width, 0px);height:anchor-size(--target height, 0%);top:anchor-size(self-inline, 0rem)}'
+    )
+  );
+
   test(
     'should preserve zero percentage inside contrast-color()',
     passthroughCSS('h1{color:contrast-color(0%)}')
@@ -394,6 +404,21 @@ describe('Math functions and preserving units', () => {
       'h1{view-timeline-inset:view(0px 0px);animation-range:view(0%)}'
     )
   );
+
+  test(
+    'should preserve zero percentage in animation-timeline view() inset',
+    passthroughCSS('h1{animation-timeline:view(0% 0%)}')
+  );
+
+  test(
+    'should convert percentage to unitless zero in view-timeline-inset',
+    processCSS('h1{view-timeline-inset:0%}', 'h1{view-timeline-inset:0}')
+  );
+
+  test(
+    'should convert multiple percentages to unitless zeros in view-timeline-inset',
+    processCSS('h1{view-timeline-inset:0% 0%}', 'h1{view-timeline-inset:0 0}')
+  );
 });
 
 describe('CSS custom property fallbacks (var)', () => {
 
@@ -166,6 +166,11 @@ describe('Length and viewport units', () => {
     passthroughCSS('h1{-webkit-line-height:0px;-webkit-line-height:0%}')
   );
 
+  test(
+    'should preserve zero units in -o- prefixed line-height',
+    passthroughCSS('h1{-o-line-height:0px;-o-line-height:0%}')
+  );
+
   test(
     'should convert metric units (mm to cm)',
     processCSS(
 
@@ -1,5 +1,3 @@
-export declare const lengthConv: Map<string, number>;
-export declare const metricConv: Map<string, number>;
 export declare const timeConv: Map<string, number>;
 export declare const angleConv: Map<string, number>;
 export declare const freqConv: Map<string, number>;
 
@@ -1,3 +1,3 @@
 /** @param {string} value @return {boolean} */
 export declare function syntaxAllowsPercentage(value: string): boolean;
-//# sourceMappingURL=parse-syntax.d.ts.map
+//# sourceMappingURL=parseSyntax.d.ts.map
Original file line number	Diff line number	Diff line change
@@ -1,5 +1,3 @@
1		- export declare const lengthConv: Map<string, number>;
2		- export declare const metricConv: Map<string, number>;
3	1	export declare const timeConv: Map<string, number>;
4	2	export declare const angleConv: Map<string, number>;
5	3	export declare const freqConv: Map<string, number>;