updated core and modules

vendor/wikimedia/composer-merge-plugin/README.md

@@ -24,6 +24,8 @@ extensions which may be managed via Composer.
 Installation
 ------------
 
+Composer Merge Plugin requires [Composer 1.0.0](https://getcomposer.org/) or newer.
+
 ```
 $ composer require wikimedia/composer-merge-plugin
 ```
@@ -32,7 +34,7 @@ $ composer require wikimedia/composer-merge-plugin
 Usage
 -----
 
-```
+```json
 {
     "require": {
         "wikimedia/composer-merge-plugin": "dev-master"
@@ -49,7 +51,9 @@ Usage
             "recurse": true,
             "replace": false,
             "merge-dev": true,
-            "merge-extra": false
+            "merge-extra": false,
+            "merge-extra-deep": false,
+            "merge-scripts": false
         }
     }
 }
@@ -88,11 +92,13 @@ in the top-level composer.json file:
 * [suggest](https://getcomposer.org/doc/04-schema.md#suggest)
 * [extra](https://getcomposer.org/doc/04-schema.md#extra)
   (optional, see [merge-extra](#merge-extra) below)
+* [scripts](https://getcomposer.org/doc/04-schema.md#scripts)
+  (optional, see [merge-scripts](#merge-scripts) below)
 
 
 ### require
 
-The `require` setting is identical to `[include](#include)` except when
+The `require` setting is identical to [`include`](#include) except when
 a pattern fails to match at least one file then it will cause an error.
 
 ### recurse
@@ -127,13 +133,30 @@ section is to accept the first version of any key found (e.g. a key in the
 master config wins over the version found in any imported config). If
 `replace` mode is active ([see above](#replace)) then this behavior changes
 and the last key found will win (e.g. the key in the master config is replaced
-by the key in the imported config). The usefulness of merging the extra
-section will vary depending on the Composer plugins being used and the order
-in which they are processed by Composer.
+by the key in the imported config). If `"merge-extra-deep": true` is specified
+then, the sections are merged similar to array_merge_recursive() - however
+duplicate string array keys are replaced instead of merged, while numeric
+array keys are merged as usual. The usefulness of merging the extra section
+will vary depending on the Composer plugins being used and the order in which
+they are processed by Composer.
 
 Note that `merge-plugin` sections are excluded from the merge process, but are
 always processed by the plugin unless [recursion](#recurse) is disabled.
 
+### merge-scripts
+
+A `"merge-scripts": true` setting enables merging the contents of the
+`scripts` section of included files as well. The normal merge mode for the
+scripts section is to accept the first version of any key found (e.g. a key in
+the master config wins over the version found in any imported config). If
+`replace` mode is active ([see above](#replace)) then this behavior changes
+and the last key found will win (e.g. the key in the master config is replaced
+by the key in the imported config).
+
+Note: [custom commands][] added by merged configuration will work when invoked
+as `composer run-script my-cool-command` but will not be available using the
+normal `composer my-cool-command` shortcut.
+
 
 Running tests
 -------------
@@ -167,7 +190,7 @@ GitHub as well.
 License
 -------
 
-Composer Merge plugin is licensed under the MIT license. See the `LICENSE`
+Composer Merge plugin is licensed under the MIT license. See the [`LICENSE`](LICENSE)
 file for more details.
 
 
@@ -181,3 +204,4 @@ file for more details.
 [License]: https://img.shields.io/packagist/l/wikimedia/composer-merge-plugin.svg?style=flat
 [Build Status]: https://img.shields.io/travis/wikimedia/composer-merge-plugin.svg?style=flat
 [Code Coverage]: https://img.shields.io/scrutinizer/coverage/g/wikimedia/composer-merge-plugin/master.svg?style=flat
+[custom commands]: https://getcomposer.org/doc/articles/scripts.md#writing-custom-commands

vendor/wikimedia/composer-merge-plugin/composer.json

@@ -16,7 +16,7 @@
         "php": ">=5.3.2"
     },
     "require-dev": {
-        "composer/composer": "1.0.*@dev",
+        "composer/composer": "~1.0.0",
         "jakub-onderka/php-parallel-lint": "~0.8",
         "phpunit/phpunit": "~4.8|~5.0",
         "squizlabs/php_codesniffer": "~2.1.0"

vendor/wikimedia/composer-merge-plugin/src/Merge/ExtraPackage.php

@@ -58,6 +58,11 @@ class ExtraPackage
      */
     protected $package;
 
+    /**
+     * @var VersionParser $versionParser
+     */
+    protected $versionParser;
+
     /**
      * @param string $path Path to composer.json file
      * @param Composer $composer
@@ -70,6 +75,7 @@ class ExtraPackage
         $this->logger = $logger;
         $this->json = $this->readPackageJson($path);
         $this->package = $this->loadPackage($this->json);
+        $this->versionParser = new VersionParser();
     }
 
     /**
@@ -120,10 +126,10 @@ class ExtraPackage
     }
 
     /**
-     * @param string $json
+     * @param array $json
      * @return CompletePackage
      */
-    protected function loadPackage($json)
+    protected function loadPackage(array $json)
     {
         $loader = new ArrayLoader();
         $package = $loader->load($json);
@@ -146,12 +152,9 @@ class ExtraPackage
      */
     public function mergeInto(RootPackageInterface $root, PluginState $state)
     {
-        $this->addRepositories($root);
+        $this->prependRepositories($root);
 
         $this->mergeRequires('require', $root, $state);
-        if ($state->isDevMode()) {
-            $this->mergeRequires('require-dev', $root, $state);
-        }
 
         $this->mergePackageLinks('conflict', $root);
         $this->mergePackageLinks('replace', $root);
@@ -160,11 +163,29 @@ class ExtraPackage
         $this->mergeSuggests($root);
 
         $this->mergeAutoload('autoload', $root);
-        if ($state->isDevMode()) {
-            $this->mergeAutoload('devAutoload', $root);
-        }
 
         $this->mergeExtra($root, $state);
+
+        $this->mergeScripts($root, $state);
+
+        if ($state->isDevMode()) {
+            $this->mergeDevInto($root, $state);
+        } else {
+            $this->mergeReferences($root);
+        }
+    }
+
+    /**
+     * Merge just the dev portion into a RootPackageInterface
+     *
+     * @param RootPackageInterface $root
+     * @param PluginState $state
+     */
+    public function mergeDevInto(RootPackageInterface $root, PluginState $state)
+    {
+        $this->mergeRequires('require-dev', $root, $state);
+        $this->mergeAutoload('devAutoload', $root);
+        $this->mergeReferences($root);
     }
 
     /**
@@ -173,7 +194,7 @@ class ExtraPackage
      *
      * @param RootPackageInterface $root
      */
-    protected function addRepositories(RootPackageInterface $root)
+    protected function prependRepositories(RootPackageInterface $root)
     {
         if (!isset($this->json['repositories'])) {
             return;
@@ -185,12 +206,12 @@ class ExtraPackage
             if (!isset($repoJson['type'])) {
                 continue;
             }
-            $this->logger->info("Adding {$repoJson['type']} repository");
+            $this->logger->info("Prepending {$repoJson['type']} repository");
             $repo = $repoManager->createRepository(
                 $repoJson['type'],
                 $repoJson
             );
-            $repoManager->addRepository($repo);
+            $repoManager->prependRepository($repo);
             $newRepos[] = $repo;
         }
 
@@ -402,25 +423,70 @@ class ExtraPackage
 
         if ($state->replaceDuplicateLinks()) {
             $unwrapped->setExtra(
-                array_merge($rootExtra, $extra)
+                self::mergeExtraArray($state->shouldMergeExtraDeep(), $rootExtra, $extra)
             );
-
         } else {
-            foreach (array_intersect(
-                array_keys($extra),
-                array_keys($rootExtra)
-            ) as $key) {
-                $this->logger->info(
-                    "Ignoring duplicate <comment>{$key}</comment> in ".
-                    "<comment>{$this->path}</comment> extra config."
-                );
+            if (!$state->shouldMergeExtraDeep()) {
+                foreach (array_intersect(
+                    array_keys($extra),
+                    array_keys($rootExtra)
+                ) as $key) {
+                    $this->logger->info(
+                        "Ignoring duplicate <comment>{$key}</comment> in ".
+                        "<comment>{$this->path}</comment> extra config."
+                    );
+                }
             }
             $unwrapped->setExtra(
-                array_merge($extra, $rootExtra)
+                self::mergeExtraArray($state->shouldMergeExtraDeep(), $extra, $rootExtra)
             );
         }
     }
 
+    /**
+     * Merge scripts config into a RootPackageInterface
+     *
+     * @param RootPackageInterface $root
+     * @param PluginState $state
+     */
+    public function mergeScripts(RootPackageInterface $root, PluginState $state)
+    {
+        $scripts = $this->package->getScripts();
+        if (!$state->shouldMergeScripts() || empty($scripts)) {
+            return;
+        }
+
+        $rootScripts = $root->getScripts();
+        $unwrapped = self::unwrapIfNeeded($root, 'setScripts');
+
+        if ($state->replaceDuplicateLinks()) {
+            $unwrapped->setScripts(
+                array_merge($rootScripts, $scripts)
+            );
+        } else {
+            $unwrapped->setScripts(
+                array_merge($scripts, $rootScripts)
+            );
+        }
+    }
+
+    /**
+     * Merges two arrays either via arrayMergeDeep or via array_merge.
+     *
+     * @param bool $mergeDeep
+     * @param array $array1
+     * @param array $array2
+     * @return array
+     */
+    public static function mergeExtraArray($mergeDeep, $array1, $array2)
+    {
+        if ($mergeDeep) {
+            return NestedArray::mergeDeep($array1, $array2);
+        }
+
+        return array_merge($array1, $array2);
+    }
+
     /**
      * Update Links with a 'self.version' constraint with the root package's
      * version.
@@ -438,7 +504,7 @@ class ExtraPackage
         $linkType = BasePackage::$supportedLinkTypes[$type];
         $version = $root->getVersion();
         $prettyVersion = $root->getPrettyVersion();
-        $vp = new VersionParser();
+        $vp = $this->versionParser;
 
         $method = 'get' . ucfirst($linkType['method']);
         $packages = $root->$method();
@@ -503,5 +569,53 @@ class ExtraPackage
         // @codeCoverageIgnoreEnd
         return $root;
     }
+
+    /**
+     * Update the root packages reference information.
+     *
+     * @param RootPackageInterface $root
+     */
+    protected function mergeReferences(RootPackageInterface $root)
+    {
+        // Merge source reference information for merged packages.
+        // @see RootPackageLoader::load
+        $references = array();
+        $unwrapped = $this->unwrapIfNeeded($root, 'setReferences');
+        foreach (array('require', 'require-dev') as $linkType) {
+            $linkInfo = BasePackage::$supportedLinkTypes[$linkType];
+            $method = 'get'.ucfirst($linkInfo['method']);
+            $links = array();
+            foreach ($unwrapped->$method() as $link) {
+                $links[$link->getTarget()] = $link->getConstraint()->getPrettyString();
+            }
+            $references = $this->extractReferences($links, $references);
+        }
+        $unwrapped->setReferences($references);
+    }
+
+    /**
+     * Extract vcs revision from version constraint (dev-master#abc123.
+     *
+     * @param array $requires
+     * @param array $references
+     * @return array
+     * @see RootPackageLoader::extractReferences()
+     */
+    protected function extractReferences(array $requires, array $references)
+    {
+        foreach ($requires as $reqName => $reqVersion) {
+            $reqVersion = preg_replace('{^([^,\s@]+) as .+$}', '$1', $reqVersion);
+            $stabilityName = VersionParser::parseStability($reqVersion);
+            if (
+                preg_match('{^[^,\s@]+?#([a-f0-9]+)$}', $reqVersion, $match) &&
+                $stabilityName === 'dev'
+            ) {
+                $name = strtolower($reqName);
+                $references[$name] = $match[1];
+            }
+        }
+
+        return $references;
+    }
 }
 // vim:sw=4:ts=4:sts=4:et:

vendor/wikimedia/composer-merge-plugin/src/Merge/NestedArray.php

@@ -0,0 +1,116 @@
+<?php
+/**
+ * This file is part of the Composer Merge plugin.
+ *
+ * Copyright (C) 2015 Bryan Davis, Wikimedia Foundation, and contributors
+ *
+ * This software may be modified and distributed under the terms of the MIT
+ * license. See the LICENSE file for details.
+ */
+
+namespace Wikimedia\Composer\Merge;
+
+/**
+ * Adapted from
+ * http://cgit.drupalcode.org/drupal/tree/core/lib/Drupal/Component/Utility/NestedArray.php
+ * @ f86a4d650d5af0b82a3981e09977055fa63f6f2e
+ */
+class NestedArray
+{
+
+    /**
+     * Merges multiple arrays, recursively, and returns the merged array.
+     *
+     * This function is similar to PHP's array_merge_recursive() function, but
+     * it handles non-array values differently. When merging values that are
+     * not both arrays, the latter value replaces the former rather than
+     * merging with it.
+     *
+     * Example:
+     *
+     * @code
+     * $link_options_1 = array('fragment' => 'x', 'attributes' => array('title' => t('X'), 'class' => array('a', 'b')));
+     * $link_options_2 = array('fragment' => 'y', 'attributes' => array('title' => t('Y'), 'class' => array('c', 'd')));
+     *
+     * // This results in array('fragment' => array('x', 'y'), 'attributes' =>
+     * // array('title' => array(t('X'), t('Y')), 'class' => array('a', 'b',
+     * // 'c', 'd'))).
+     * $incorrect = array_merge_recursive($link_options_1, $link_options_2);
+     *
+     * // This results in array('fragment' => 'y', 'attributes' =>
+     * // array('title' => t('Y'), 'class' => array('a', 'b', 'c', 'd'))).
+     * $correct = NestedArray::mergeDeep($link_options_1, $link_options_2);
+     * @endcode
+     *
+     * @param array ...
+     *   Arrays to merge.
+     *
+     * @return array
+     *   The merged array.
+     *
+     * @see NestedArray::mergeDeepArray()
+     */
+    public static function mergeDeep()
+    {
+        return self::mergeDeepArray(func_get_args());
+    }
+
+    /**
+     * Merges multiple arrays, recursively, and returns the merged array.
+     *
+     * This function is equivalent to NestedArray::mergeDeep(), except the
+     * input arrays are passed as a single array parameter rather than
+     * a variable parameter list.
+     *
+     * The following are equivalent:
+     * - NestedArray::mergeDeep($a, $b);
+     * - NestedArray::mergeDeepArray(array($a, $b));
+     *
+     * The following are also equivalent:
+     * - call_user_func_array('NestedArray::mergeDeep', $arrays_to_merge);
+     * - NestedArray::mergeDeepArray($arrays_to_merge);
+     *
+     * @param array $arrays
+     *   An arrays of arrays to merge.
+     * @param bool  $preserveIntegerKeys
+     *   (optional) If given, integer keys will be preserved and merged
+     *   instead of appended. Defaults to false.
+     *
+     * @return array
+     *   The merged array.
+     *
+     * @see NestedArray::mergeDeep()
+     */
+    public static function mergeDeepArray(
+        array $arrays,
+        $preserveIntegerKeys = false
+    ) {
+        $result = array();
+        foreach ($arrays as $array) {
+            foreach ($array as $key => $value) {
+                // Renumber integer keys as array_merge_recursive() does
+                // unless $preserveIntegerKeys is set to TRUE. Note that PHP
+                // automatically converts array keys that are integer strings
+                // (e.g., '1') to integers.
+                if (is_integer($key) && !$preserveIntegerKeys) {
+                    $result[] = $value;
+                } elseif (isset($result[$key]) &&
+                    is_array($result[$key]) &&
+                    is_array($value)
+                ) {
+                    // Recurse when both values are arrays.
+                    $result[$key] = self::mergeDeepArray(
+                        array($result[$key], $value),
+                        $preserveIntegerKeys
+                    );
+                } else {
+                    // Otherwise, use the latter value, overriding any
+                    // previous value.
+                    $result[$key] = $value;
+                }
+            }
+        }
+        return $result;
+    }
+}
+// vim:sw=4:ts=4:sts=4:et:

vendor/wikimedia/composer-merge-plugin/src/Merge/PluginState.php

@@ -74,6 +74,31 @@ class PluginState
      */
     protected $mergeExtra = false;
 
+    /**
+     * Whether to merge the extra section in a deep / recursive way.
+     *
+     * By default the extra section is merged with array_merge() and duplicate
+     * keys are ignored. When enabled this allows to merge the arrays recursively
+     * using the following rule: Integer keys are merged, while array values are
+     * replaced where the later values overwrite the former.
+     *
+     * This is useful especially for the extra section when plugins use larger
+     * structures like a 'patches' key with the packages as sub-keys and the
+     * patches as values.
+     *
+     * When 'replace' mode is activated the order of array merges is exchanged.
+     *
+     * @var bool $mergeExtraDeep
+     */
+    protected $mergeExtraDeep = false;
+
+    /**
+     * Whether to merge the scripts section.
+     *
+     * @var bool $mergeScripts
+     */
+    protected $mergeScripts = false;
+
     /**
      * @var bool $firstInstall
      */
@@ -116,6 +141,8 @@ class PluginState
                 'replace' => false,
                 'merge-dev' => true,
                 'merge-extra' => false,
+                'merge-extra-deep' => false,
+                'merge-scripts' => false,
             ),
             isset($extra['merge-plugin']) ? $extra['merge-plugin'] : array()
         );
@@ -128,6 +155,8 @@ class PluginState
         $this->replace = (bool)$config['replace'];
         $this->mergeDev = (bool)$config['merge-dev'];
         $this->mergeExtra = (bool)$config['merge-extra'];
+        $this->mergeExtraDeep = (bool)$config['merge-extra-deep'];
+        $this->mergeScripts = (bool)$config['merge-scripts'];
     }
 
     /**
@@ -217,7 +246,17 @@ class PluginState
      */
     public function isDevMode()
     {
-        return $this->mergeDev && $this->devMode;
+        return $this->shouldMergeDev() && $this->devMode;
+    }
+
+    /**
+     * Should devMode settings be merged?
+     *
+     * @return bool
+     */
+    public function shouldMergeDev()
+    {
+        return $this->mergeDev;
     }
 
     /**
@@ -323,5 +362,39 @@ class PluginState
     {
         return $this->mergeExtra;
     }
+
+    /**
+     * Should the extra section be merged deep / recursively?
+     *
+     * By default the extra section is merged with array_merge() and duplicate
+     * keys are ignored. When enabled this allows to merge the arrays recursively
+     * using the following rule: Integer keys are merged, while array values are
+     * replaced where the later values overwrite the former.
+     *
+     * This is useful especially for the extra section when plugins use larger
+     * structures like a 'patches' key with the packages as sub-keys and the
+     * patches as values.
+     *
+     * When 'replace' mode is activated the order of array merges is exchanged.
+     *
+     * @return bool
+     */
+    public function shouldMergeExtraDeep()
+    {
+        return $this->mergeExtraDeep;
+    }
+
+
+    /**
+     * Should the scripts section be merged?
+     *
+     * By default, the scripts section is not merged.
+     *
+     * @return bool
+     */
+    public function shouldMergeScripts()
+    {
+        return $this->mergeScripts;
+    }
 }
 // vim:sw=4:ts=4:sts=4:et:

vendor/wikimedia/composer-merge-plugin/src/MergePlugin.php

@@ -16,6 +16,7 @@ use Wikimedia\Composer\Merge\PluginState;
 
 use Composer\Composer;
 use Composer\DependencyResolver\Operation\InstallOperation;
+use Composer\EventDispatcher\Event as BaseEvent;
 use Composer\EventDispatcher\EventSubscriberInterface;
 use Composer\Factory;
 use Composer\Installer;
@@ -26,7 +27,7 @@ use Composer\Installer\PackageEvents;
 use Composer\IO\IOInterface;
 use Composer\Package\RootPackageInterface;
 use Composer\Plugin\PluginInterface;
-use Composer\Script\Event;
+use Composer\Script\Event as ScriptEvent;
 use Composer\Script\ScriptEvents;
 
 /**
@@ -86,6 +87,16 @@ class MergePlugin implements PluginInterface, EventSubscriberInterface
      */
     const PACKAGE_NAME = 'wikimedia/composer-merge-plugin';
 
+    /**
+     * Name of the composer 1.1 init event.
+     */
+    const COMPAT_PLUGINEVENTS_INIT = 'init';
+
+    /**
+     * Priority that plugin uses to register callbacks.
+     */
+    const CALLBACK_PRIORITY = 50000;
+
     /**
      * @var Composer $composer
      */
@@ -102,11 +113,18 @@ class MergePlugin implements PluginInterface, EventSubscriberInterface
     protected $logger;
 
     /**
-     * Files that have already been processed
+     * Files that have already been fully processed
      *
-     * @var string[] $loadedFiles
+     * @var string[] $loaded
      */
-    protected $loadedFiles = array();
+    protected $loaded = array();
+
+    /**
+     * Files that have already been partially processed
+     *
+     * @var string[] $loadedNoDev
+     */
+    protected $loadedNoDev = array();
 
     /**
      * {@inheritdoc}
@@ -124,24 +142,52 @@ class MergePlugin implements PluginInterface, EventSubscriberInterface
     public static function getSubscribedEvents()
     {
         return array(
-            InstallerEvents::PRE_DEPENDENCIES_SOLVING => 'onDependencySolve',
-            PackageEvents::POST_PACKAGE_INSTALL => 'onPostPackageInstall',
-            ScriptEvents::POST_INSTALL_CMD => 'onPostInstallOrUpdate',
-            ScriptEvents::POST_UPDATE_CMD => 'onPostInstallOrUpdate',
-            ScriptEvents::PRE_AUTOLOAD_DUMP => 'onInstallUpdateOrDump',
-            ScriptEvents::PRE_INSTALL_CMD => 'onInstallUpdateOrDump',
-            ScriptEvents::PRE_UPDATE_CMD => 'onInstallUpdateOrDump',
+            // Use our own constant to make this event optional. Once
+            // composer-1.1 is required, this can use PluginEvents::INIT
+            // instead.
+            self::COMPAT_PLUGINEVENTS_INIT =>
+                array('onInit', self::CALLBACK_PRIORITY),
+            InstallerEvents::PRE_DEPENDENCIES_SOLVING =>
+                array('onDependencySolve', self::CALLBACK_PRIORITY),
+            PackageEvents::POST_PACKAGE_INSTALL =>
+                array('onPostPackageInstall', self::CALLBACK_PRIORITY),
+            ScriptEvents::POST_INSTALL_CMD =>
+                array('onPostInstallOrUpdate', self::CALLBACK_PRIORITY),
+            ScriptEvents::POST_UPDATE_CMD =>
+                array('onPostInstallOrUpdate', self::CALLBACK_PRIORITY),
+            ScriptEvents::PRE_AUTOLOAD_DUMP =>
+                array('onInstallUpdateOrDump', self::CALLBACK_PRIORITY),
+            ScriptEvents::PRE_INSTALL_CMD =>
+                array('onInstallUpdateOrDump', self::CALLBACK_PRIORITY),
+            ScriptEvents::PRE_UPDATE_CMD =>
+                array('onInstallUpdateOrDump', self::CALLBACK_PRIORITY),
         );
     }
 
+    /**
+     * Handle an event callback for initialization.
+     *
+     * @param \Composer\EventDispatcher\Event $event
+     */
+    public function onInit(BaseEvent $event)
+    {
+        $this->state->loadSettings();
+        // It is not possible to know if the user specified --dev or --no-dev
+        // so assume it is false. The dev section will be merged later when
+        // the other events fire.
+        $this->state->setDevMode(false);
+        $this->mergeFiles($this->state->getIncludes(), false);
+        $this->mergeFiles($this->state->getRequires(), true);
+    }
+
     /**
      * Handle an event callback for an install, update or dump command by
      * checking for "merge-plugin" in the "extra" data and merging package
      * contents if found.
      *
-     * @param Event $event
+     * @param ScriptEvent $event
      */
-    public function onInstallUpdateOrDump(Event $event)
+    public function onInstallUpdateOrDump(ScriptEvent $event)
     {
         $this->state->loadSettings();
         $this->state->setDevMode($event->isDevMode());
@@ -196,16 +242,32 @@ class MergePlugin implements PluginInterface, EventSubscriberInterface
      */
     protected function mergeFile(RootPackageInterface $root, $path)
     {
-        if (isset($this->loadedFiles[$path])) {
-            $this->logger->debug("Already merged <comment>$path</comment>");
+        if (isset($this->loaded[$path]) ||
+            (isset($this->loadedNoDev[$path]) && !$this->state->isDevMode())
+        ) {
+            $this->logger->debug(
+                "Already merged <comment>$path</comment> completely"
+            );
             return;
-        } else {
-            $this->loadedFiles[$path] = true;
         }
-        $this->logger->info("Loading <comment>{$path}</comment>...");
 
         $package = new ExtraPackage($path, $this->composer, $this->logger);
-        $package->mergeInto($root, $this->state);
+
+        if (isset($this->loadedNoDev[$path])) {
+            $this->logger->info(
+                "Loading -dev sections of <comment>{$path}</comment>..."
+            );
+            $package->mergeDevInto($root, $this->state);
+        } else {
+            $this->logger->info("Loading <comment>{$path}</comment>...");
+            $package->mergeInto($root, $this->state);
+        }
+
+        if ($this->state->isDevMode()) {
+            $this->loaded[$path] = true;
+        } else {
+            $this->loadedNoDev[$path] = true;
+        }
 
         if ($this->state->recurseIncludes()) {
             $this->mergeFiles($package->getIncludes(), false);
@@ -230,7 +292,12 @@ class MergePlugin implements PluginInterface, EventSubscriberInterface
             );
             $request->install($link->getTarget(), $link->getConstraint());
         }
-        if ($this->state->isDevMode()) {
+
+        // Issue #113: Check devMode of event rather than our global state.
+        // Composer fires the PRE_DEPENDENCIES_SOLVING event twice for
+        // `--no-dev` operations to decide which packages are dev only
+        // requirements.
+        if ($this->state->shouldMergeDev() && $event->isDevMode()) {
             foreach ($this->state->getDuplicateLinks('require-dev') as $link) {
                 $this->logger->info(
                     "Adding dev dependency <comment>{$link}</comment>"
@@ -266,9 +333,9 @@ class MergePlugin implements PluginInterface, EventSubscriberInterface
      * plugin was installed during the run then trigger an update command to
      * process any merge-patterns in the current config.
      *
-     * @param Event $event
+     * @param ScriptEvent $event
      */
-    public function onPostInstallOrUpdate(Event $event)
+    public function onPostInstallOrUpdate(ScriptEvent $event)
     {
         // @codeCoverageIgnoreStart
         if ($this->state->isFirstInstall()) {