Fix for :nth-child(n+B) to select B-th and all following elements

.gitignore

@@ -12,4 +12,6 @@ docs/*
 doc/*
 test/fakepear
 vendor/
-composer.lock
+composer.lock
+.phpunit.result.cache
+.idea/

CHANGELOG.md

@@ -1,6 +1,10 @@
 QueryPath Changelog
 ===========================
 
+# 4.0.2
+
+- Fix for :nth-child(n+B) to select B-th and all following elements
+
 # 4.0.1
 
 - Only define global functions qp(), htmlqp(), and html5qp() if they haven't been defined already.

src/CSS/QueryPathEventHandler.php

@@ -734,9 +734,15 @@ protected function parseAnB($rule)
 			throw new ParseException("nth-child value is invalid.");
 		}
 
-		// Each of these is legal: 1, -1, and -. '-' is shorthand for -1.
+		// Each of these is legal: 1, -1, - and <empty>. '-' is shorthand for -1. <empty> is shorthand for 1
 		$aVal = trim($rule[0]);
-		$aVal = ($aVal == '-') ? -1 : (int) $aVal;
+		if ($aVal === '') {
+			$aVal = 1;
+		} elseif ($aVal === '-') {
+			$aVal = -1;
+		} else {
+			$aVal = (int) $aVal;
+		}
 
 		$bVal = ! empty($rule[1]) ? (int) trim($rule[1]) : 0;
 

tests/QueryPath/CSS/QueryPathEventHandlerTest.php

@@ -714,6 +714,13 @@ public function testPseudoClassNthChild()
 		$matches = $handler->getMatches();
 		$this->assertEquals(0, $matches->count());
 
+		// Test nth-child(n+3) (3+ elements)
+		$handler = new QueryPathEventHandler($doc);
+		$handler->find('i:nth-child(n+3)');
+		$matches = $handler->getMatches();
+		$this->assertEquals(3, $matches->count());
+		$this->assertEquals('four', $this->nthMatch($matches, 1)->getAttribute('id'));
+
 		// Test nth-child(-n+3) (First three lines)
 		// $handler = new QueryPathEventHandler($doc);
 		// $handler->find('i:nth-child(-n+3)');