Correct handling of rules with more than 2 literals.

src/Composer/DependencyResolver/Solver.php

@@ -1270,16 +1270,16 @@ class Solver
 
                 if (sizeof($ruleLiterals) > 2) {
                     foreach ($ruleLiterals as $ruleLiteral) {
-                        if (!$otherWatch->equals($ruleLiteral) &&
+                        if ($otherWatch !== $ruleLiteral->getId() &&
                             !$this->decisionsConflict($ruleLiteral)) {
 
 
-                            if ($literal->equals($rule->getWatch1())) {
-                                $rule->setWatch1($ruleLiteral);
-                                $rule->setNext1($rule);
+                            if ($literal->getId() === $rule->watch1) {
+                                $rule->watch1 = $ruleLiteral->getId();
+                                $rule->next1 = (isset($this->watches[$ruleLiteral->getId()])) ? $this->watches[$ruleLiteral->getId()] : null ;
                             } else {
-                                $rule->setWatch2($ruleLiteral);
-                                $rule->setNext2($rule);
+                                $rule->watch2 = $ruleLiteral->getId();
+                                $rule->next2 = (isset($this->watches[$ruleLiteral->getId()])) ? $this->watches[$ruleLiteral->getId()] : null ;
                             }
 
                             $this->watches[$ruleLiteral->getId()] = $rule;

tests/Composer/Test/DependencyResolver/SolverTest.php

@@ -139,7 +139,7 @@ class SolverTest extends \PHPUnit_Framework_TestCase
         $this->checkSolverResult(array());
     }
 
-    public function testSolverFull()
+    public function testSolverAllJobs()
     {
         $this->repoInstalled->addPackage($packageD = new MemoryPackage('D', '1.0'));
         $this->repoInstalled->addPackage($oldPackageC = new MemoryPackage('C', '1.0'));
@@ -165,6 +165,25 @@ class SolverTest extends \PHPUnit_Framework_TestCase
         ));
     }
 
+    public function testSolverThreeAlternativeRequireAndConflict()
+    {
+        $this->repo->addPackage($packageA = new MemoryPackage('A', '2.0'));
+        $this->repo->addPackage($middlePackageB = new MemoryPackage('B', '1.0'));
+        $this->repo->addPackage($newPackageB = new MemoryPackage('B', '1.1'));
+        $this->repo->addPackage($oldPackageB = new MemoryPackage('B', '0.9'));
+        $packageA->setRequires(array(new Link('A', 'B', new VersionConstraint('<', '1.1'), 'requires')));
+        $packageA->setConflicts(array(new Link('A', 'B', new VersionConstraint('<', '1.0'), 'conflicts')));
+
+        $this->reposComplete();
+
+        $this->request->install('A');
+
+        $this->checkSolverResult(array(
+            array('job' => 'install', 'package' => $middlePackageB),
+            array('job' => 'install', 'package' => $packageA),
+        ));
+    }
+
     public function testInstallOneOfTwoAlternatives()
     {
         $this->repo->addPackage($packageA = new MemoryPackage('A', '1.0'));