Fixed & search after consuming parenthesis

src/Parser.js

@@ -44,7 +44,7 @@ export function parse (value, root, parent, rule, rules, rulesets, pseudo, point
 			// (
 			case 40:
 				if (previous != 108 && charat(characters, length - 1) == 58) {
-					if (indexof(characters += replace(delimit(character), '&', '&\f'), '&\f') != -1)
+					if (indexof(characters += replace(delimit(character), '&', '&\f'), '&\f', abs(index ? points[index - 1] : 0)) != -1)
 						ampersand = -1
 					break
 				}

src/Prefixer.js

@@ -87,7 +87,7 @@ export function prefix (value, length, children) {
 		// grid-(row|column)-start
 		case 4384: case 3616:
 			if (children && children.some(function (element, index) { return length = index, match(element.props, /grid-\w+-end/) })) {
-				return ~indexof(value + (children = children[length].value), 'span') ? value : (MS + replace(value, '-start', '') + value + MS + 'grid-row-span:' + (~indexof(children, 'span') ? match(children, /\d+/) : +match(children, /\d+/) - +match(value, /\d+/)) + ';')
+				return ~indexof(value + (children = children[length].value), 'span', 0) ? value : (MS + replace(value, '-start', '') + value + MS + 'grid-row-span:' + (~indexof(children, 'span', 0) ? match(children, /\d+/) : +match(children, /\d+/) - +match(value, /\d+/)) + ';')
 			}
 			return MS + replace(value, '-start', '') + value
 		// grid-(row|column)-end
@@ -113,7 +113,7 @@ export function prefix (value, length, children) {
 						return replace(value, /(.+:)(.+)-([^]+)/, '$1' + WEBKIT + '$2-$3' + '$1' + MOZ + (charat(value, length + 3) == 108 ? '$3' : '$2-$3')) + value
 					// (s)tretch
 					case 115:
-						return ~indexof(value, 'stretch') ? prefix(replace(value, 'stretch', 'fill-available'), length, children) + value : value
+						return ~indexof(value, 'stretch', 0) ? prefix(replace(value, 'stretch', 'fill-available'), length, children) + value : value
 				}
 			break
 		// grid-(column|row)

src/Utility.js

@@ -55,10 +55,11 @@ export function replace (value, pattern, replacement) {
 /**
  * @param {string} value
  * @param {string} search
+ * @param {number} position
  * @return {number}
  */
-export function indexof (value, search) {
-	return value.indexOf(search)
+export function indexof (value, search, position) {
+	return value.indexOf(search, position)
 }
 
 /**

test/Parser.js

@@ -142,6 +142,21 @@ describe('Parser', () => {
     ).to.equal(`.user [href="https://css-tricks.com?a=1&b=2"]{color:red;}`)
   })
 
+  test('& in first selector within a comma-separated list', () => {
+    expect(
+      stylis(`
+        div {
+          display: flex;
+
+          &.foo,
+          p:not(:last-child) {
+            background: red;
+          }
+        }
+      `)
+    ).to.equal(`.user div{display:flex;}.user div.foo,.user div p:not(:last-child){background:red;}`)
+  });
+
   test('escaped chars in selector identifiers', () => {
     expect(
       stylis(`
@@ -858,6 +873,15 @@ describe('Parser', () => {
     ].join(''))
   })
 
+  test('context character IX', () => {
+    expect(
+      stylis(`background: url(i&m&g.png);.a {background: url(i&m&g.png);}`)
+    ).to.equal([
+      `.user{background:url(i&m&g.png);}`,
+      `.user .a{background:url(i&m&g.png);}`
+    ].join(''))
+  })
+
   test('`--` in an identifier (#220)', () => {
     expect(
       stylis(`