Merge remote-tracking branch 'upstream/master'

.github/workflows/phpstan.yml

@@ -52,5 +52,5 @@ jobs:
       - name: Run PHPStan
         # Locked to phpunit 7.5 here as newer ones have void return types which break inheritance
         run: |
-          bin/composer require --dev phpstan/phpstan:^0.12.42 phpunit/phpunit:^7.5.20 --with-all-dependencies ${{ env.COMPOSER_FLAGS }}
+          bin/composer require --dev phpstan/phpstan:^0.12.69 phpunit/phpunit:^7.5.20 --with-all-dependencies ${{ env.COMPOSER_FLAGS }}
           vendor/bin/phpstan analyse --configuration=phpstan/config.neon

CHANGELOG.md

@@ -1,3 +1,17 @@
+### [2.0.9] 2021-01-27
+
+  * Added warning if the curl extension is not enabled as it significantly degrades performance
+  * Fixed InstalledVersions to report all packages when several vendor dirs are present in the same runtime
+  * Fixed download speed when downloading large files
+  * Fixed `archive` and path repo copies mishandling some .gitignore paths
+  * Fixed root package classes not being available to the plugins/scripts during the initial install
+  * Fixed cache writes to be atomic and better support multiple Composer processes running in parallel
+  * Fixed preg jit issues when `config` or `require` modifies large composer.json files
+  * Fixed compatibility with envs having open_basedir restrictions
+  * Fixed exclude-from-classmap causing regex issues when having too many paths
+  * Fixed compatibility issue with Symfony 4/5
+  * Several small performance and debug output improvements
+
 ### [2.0.8] 2020-12-03
 
   * Fixed packages with aliases not matching conflicts which match the alias
@@ -150,6 +164,11 @@
   * Fixed suggest output being very spammy, it now is only one line long and shows more rarely
   * Fixed conflict rules like e.g. >=5 from matching dev-master, as it is not normalized to 9999999-dev internally anymore
 
+### [1.10.20] 2021-01-27
+
+  * Fixed exclude-from-classmap causing regex issues when having too many paths
+  * Fixed compatibility issue with Symfony 4/5
+
 ### [1.10.19] 2020-12-04
 
   * Fixed regression on PHP 8.0
@@ -1076,6 +1095,7 @@
 
   * Initial release
 
+[2.0.9]: https://github.com/composer/composer/compare/2.0.8...2.0.9
 [2.0.8]: https://github.com/composer/composer/compare/2.0.7...2.0.8
 [2.0.7]: https://github.com/composer/composer/compare/2.0.6...2.0.7
 [2.0.6]: https://github.com/composer/composer/compare/2.0.5...2.0.6
@@ -1090,6 +1110,7 @@
 [2.0.0-alpha3]: https://github.com/composer/composer/compare/2.0.0-alpha2...2.0.0-alpha3
 [2.0.0-alpha2]: https://github.com/composer/composer/compare/2.0.0-alpha1...2.0.0-alpha2
 [2.0.0-alpha1]: https://github.com/composer/composer/compare/1.10.7...2.0.0-alpha1
+[1.10.20]: https://github.com/composer/composer/compare/1.10.19...1.10.20
 [1.10.19]: https://github.com/composer/composer/compare/1.10.18...1.10.19
 [1.10.18]: https://github.com/composer/composer/compare/1.10.17...1.10.18
 [1.10.17]: https://github.com/composer/composer/compare/1.10.16...1.10.17

composer.lock

@@ -8,16 +8,16 @@
     "packages": [
         {
             "name": "composer/ca-bundle",
-            "version": "1.2.8",
+            "version": "1.2.9",
             "source": {
                 "type": "git",
                 "url": "https://github.com/composer/ca-bundle.git",
-                "reference": "8a7ecad675253e4654ea05505233285377405215"
+                "reference": "78a0e288fdcebf92aa2318a8d3656168da6ac1a5"
             },
             "dist": {
                 "type": "zip",
-                "url": "https://api.github.com/repos/composer/ca-bundle/zipball/8a7ecad675253e4654ea05505233285377405215",
+                "url": "https://api.github.com/repos/composer/ca-bundle/zipball/78a0e288fdcebf92aa2318a8d3656168da6ac1a5",
-                "reference": "8a7ecad675253e4654ea05505233285377405215",
+                "reference": "78a0e288fdcebf92aa2318a8d3656168da6ac1a5",
                 "shasum": ""
             },
             "require": {
@@ -26,14 +26,15 @@
                 "php": "^5.3.2 || ^7.0 || ^8.0"
             },
             "require-dev": {
-                "phpunit/phpunit": "^4.8.35 || ^5.7 || 6.5 - 8",
+                "phpstan/phpstan": "^0.12.55",
                 "psr/log": "^1.0",
+                "symfony/phpunit-bridge": "^4.2 || ^5",
                 "symfony/process": "^2.5 || ^3.0 || ^4.0 || ^5.0"
             },
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-master": "1.x-dev"
+                    "dev-main": "1.x-dev"
                 }
             },
             "autoload": {
@@ -63,7 +64,7 @@
             "support": {
                 "irc": "irc://irc.freenode.org/composer",
                 "issues": "https://github.com/composer/ca-bundle/issues",
-                "source": "https://github.com/composer/ca-bundle/tree/1.2.8"
+                "source": "https://github.com/composer/ca-bundle/tree/1.2.9"
             },
             "funding": [
                 {
@@ -79,7 +80,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2020-08-23T12:54:47+00:00"
+            "time": "2021-01-12T12:10:35+00:00"
         },
         {
             "name": "composer/semver",

doc/03-cli.md

@@ -943,6 +943,8 @@ The `COMPOSER_HOME` var allows you to change the Composer home directory. This
 is a hidden, global (per-user on the machine) directory that is shared between
 all projects.
 
+Use `composer config --global home` to see the location of the home directory.
+
 By default, it points to `C:\Users\<user>\AppData\Roaming\Composer` on Windows
 and `/Users/<user>/.composer` on macOS. On \*nix systems that follow the [XDG Base
 Directory Specifications](https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html),
@@ -1012,6 +1014,13 @@ similar use case), and need to support proxies, please provide the `CGI_HTTP_PRO
 environment variable instead. See [httpoxy.org](https://httpoxy.org/) for further
 details.
 
+### COMPOSER_MAX_PARALLEL_HTTP
+
+Set to an integer to configure how many files can be downloaded in parallel. This
+defaults to 12 and must be between 1 and 50. If your proxy has issues with
+concurrency maybe you want to lower this. Increasing it should generally not result
+in performance gains.
+
 ### HTTP_PROXY_REQUEST_FULLURI
 
 If you use a proxy, but it does not support the request_fulluri flag, then you

doc/04-schema.md

@@ -401,19 +401,19 @@ Example:
 
 #### require
 
-Lists packages required by this package. The package will not be installed
+Map of packages required by this package. The package will not be installed
 unless those requirements can be met.
 
 #### require-dev <span>([root-only](04-schema.md#root-package))</span>
 
-Lists packages required for developing this package, or running
+Map of packages required for developing this package, or running
 tests, etc. The dev requirements of the root package are installed by default.
 Both `install` or `update` support the `--no-dev` option that prevents dev
 dependencies from being installed.
 
 #### conflict
 
-Lists packages that conflict with this version of this package. They
+Map of packages that conflict with this version of this package. They
 will not be allowed to be installed together with your package.
 
 Note that when specifying ranges like `<1.0 >=1.1` in a `conflict` link,
@@ -423,7 +423,7 @@ probably want to go for `<1.0 || >=1.1` in this case.
 
 #### replace
 
-Lists packages that are replaced by this package. This allows you to fork a
+Map of packages that are replaced by this package. This allows you to fork a
 package, publish it under a different name with its own version numbers, while
 packages requiring the original package continue to work with your fork because
 it replaces the original package.
@@ -441,10 +441,12 @@ that exact version, and not any other version, which would be incorrect.
 
 #### provide
 
-List of other packages that are provided by this package. This is mostly
+Map of packages that are provided by this package. This is mostly
 useful for implementations of common interfaces. A package could depend on
-some virtual `logger-implementation` package, any library that implements
+some virtual package e.g. `psr/logger-implementation`, any library that implements
-this logger interface would list it in `provide`.
+this logger interface would list it in `provide`. Implementors can then
+be [found on Packagist.org](https://packagist.org/providers/psr/log-implementation).
+
 Using `provide` with the name of an actual package rather than a virtual one
 implies that the code of that package is also shipped, in which case `replace`
 is generally a better choice. A common convention for packages providing an

doc/05-repositories.md

@@ -576,14 +576,23 @@ the branch or tag that is currently checked out. Otherwise, the version should
 be explicitly defined in the package's `composer.json` file. If the version
 cannot be resolved by these means, it is assumed to be `dev-master`.
 
-When the version cannot be inferred from the local VCS repository, you should use
+When the version cannot be inferred from the local VCS repository, or when you
-the special `branch-version` entry under `extra` instead of `version`:
+want to override the version, you can use the `versions` option when declaring
+the repository:
 
 ```json
 {
-    "extra": {
+    "repositories": [
-        "branch-version": "4.2-dev"
+        {
-    }
+            "type": "path",
+            "url": "../../packages/my-package",
+            "options": {
+                "versions": {
+                    "my/package": "4.2-dev"
+                }
+            }
+        }
+    ]
 }
 ```
 

doc/07-runtime.md

@@ -87,7 +87,7 @@ possible for safety.
 ----
 
 A few other methods are available for more complex usages, please refer to the
-source/docblocks of the class itself.
+source/docblocks of [the class itself](https://github.com/composer/composer/blob/master/src/Composer/InstalledVersions.php).
 
 ## Platform check
 

doc/articles/authentication-for-private-packages.md

@@ -80,10 +80,9 @@ To fix this you need to open the file in an editor and fix the error. To find th
 your global `auth.json`, execute:
 
 ```sh
-composer config --global --list
+composer config --global home
 ```
 
-And look for the `[home]` section. (It is by default `~/.composer` or `%APPDATA%/Composer` on Windows)
 The folder will contain your global `auth.json` if it exists.
 
 You can open this file in your favorite editor and fix the error.
@@ -107,7 +106,7 @@ section or directly in the repository definition.
 
 The final option to supply Composer with credentials is to use the `COMPOSER_AUTH` environment variable.
 These variables can be either passed as command line variables or set in actual environment variables.
-Read more about the usage of this environment variable [here](../03-cli.md#COMPOSER_AUTH).
+Read more about the usage of this environment variable [here](../03-cli.md#composer-auth).
 
 # Authentication methods
 

doc/articles/versions.md

@@ -80,6 +80,19 @@ In the above example, if you wanted to check out the `my-feature` branch, you wo
 
 When branch names look like versions, we have to clarify for composer that we're trying to check out a branch and not a tag. In the above example, we have two version branches: `v1` and `v2`. To get Composer to check out one of these branches, you must specify a version constraint that looks like this: `v1.x-dev`. The `.x` is an arbitrary string that Composer requires to tell it that we're talking about the `v1` branch and not a `v1` tag (alternatively, you can name the branch `v1.x` instead of `v1`). In the case of a branch with a version-like name (`v1`, in this case), you append `-dev` as a suffix, rather than using `dev-` as a prefix.
 
+### Stabilities
+
+Composer recognizes the following stabilities (in order of stability): dev,
+alpha, beta, RC, and stable where RC stands for release candidate. The stability
+of a version is defined by its suffix e.g version `v1.1-BETA` has a stability of
+`beta` and `v1.1-RC1` has a stability of `RC`. If such a suffix is missing
+e.g. version `v1.1` then Composer considers that version `stable`. In addition
+to that Composer automatically adds a `-dev` suffix to all numeric branches and
+prefixes all other branches imported from a VCS repository with `dev-`. In both
+cases the stability `dev` gets assigned.
+
+Keeping this in mind will help you in the next section.
+
 ### Minimum Stability
 
 There's one more thing that will affect which files are checked out of a library's VCS and added to your project: Composer allows you to specify stability constraints to limit which tags are considered valid. In the above example, note that the library released a beta and two release candidates for version `1.1` before the final official release. To receive these versions when running `composer install` or `composer update`, we have to explicitly tell Composer that we are ok with release candidates and beta releases (and alpha releases, if we want those). This can be done using either a project-wide `minimum-stability` value in `composer.json` or using "stability flags" in version constraints. Read more on the [schema page](../04-schema.md#minimum-stability).

doc/faqs/how-to-install-composer-programmatically.md

@@ -9,7 +9,7 @@ An alternative is to use this script which only works with UNIX utilities:
 ```bash
 #!/bin/sh
 
-EXPECTED_CHECKSUM="$(wget -q -O - https://composer.github.io/installer.sig)"
+EXPECTED_CHECKSUM="$(php -r 'copy("https://composer.github.io/installer.sig", "php://stdout");')"
 php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');"
 ACTUAL_CHECKSUM="$(php -r "echo hash_file('sha384', 'composer-setup.php');")"
 

src/Composer/Autoload/AutoloadGenerator.php

@@ -275,7 +275,7 @@ EOF;
 
         $excluded = null;
         if (!empty($autoloads['exclude-from-classmap'])) {
-            $excluded = '{(' . implode('|', $autoloads['exclude-from-classmap']) . ')}';
+            $excluded = $autoloads['exclude-from-classmap'];
         }
 
         $classMap = array();
@@ -398,8 +398,31 @@ EOF;
         return $classMap;
     }
 
+    /**
+     * @param ?array $excluded
+     */
     private function generateClassMap($dir, $excluded, $namespaceFilter, $autoloadType, $showAmbiguousWarning, array &$scannedFiles)
     {
+        if ($excluded) {
+            // filter excluded patterns here to only use those matching $dir
+            // exclude-from-classmap patterns are all realpath'd so we can only filter them if $dir exists so that realpath($dir) will work
+            // if $dir does not exist, it should anyway not find anything there so no trouble
+            if (file_exists($dir)) {
+                // transform $dir in the same way that exclude-from-classmap patterns are transformed so we can match them against each other
+                $dirMatch = preg_quote(strtr(realpath($dir), '\\', '/'));
+                foreach ($excluded as $index => $pattern) {
+                    // extract the constant string prefix of the pattern here, until we reach a non-escaped regex special character
+                    $pattern = preg_replace('{^(([^.+*?\[^\]$(){}=!<>|:\\\\#-]+|\\\\[.+*?\[^\]$(){}=!<>|:#-])*).*}', '$1', $pattern);
+                    // if the pattern is not a subset or superset of $dir, it is unrelated and we skip it
+                    if (0 !== strpos($pattern, $dirMatch) && 0 !== strpos($dirMatch, $pattern)) {
+                        unset($excluded[$index]);
+                    }
+                }
+            }
+
+            $excluded = $excluded ? '{(' . implode('|', $excluded) . ')}' : null;
+        }
+
         return ClassMapGenerator::createMap($dir, $excluded, $showAmbiguousWarning ? $this->io : null, $namespaceFilter, $autoloadType, $scannedFiles);
     }
 
@@ -513,7 +536,7 @@ EOF;
         if (isset($autoloads['classmap'])) {
             $excluded = null;
             if (!empty($autoloads['exclude-from-classmap'])) {
-                $excluded = '{(' . implode('|', $autoloads['exclude-from-classmap']) . ')}';
+                $excluded = $autoloads['exclude-from-classmap'];
             }
 
             $scannedFiles = array();
@@ -838,7 +861,7 @@ PLATFORM_CHECK;
 
         $file .= <<<CLASSLOADER_INIT
         spl_autoload_register(array('ComposerAutoloaderInit$suffix', 'loadClassLoader'), true, $prependAutoloader);
-        self::\$loader = \$loader = new \\Composer\\Autoload\\ClassLoader();
+        self::\$loader = \$loader = new \\Composer\\Autoload\\ClassLoader(\\dirname(\\dirname(__FILE__)));
         spl_autoload_unregister(array('ComposerAutoloaderInit$suffix', 'loadClassLoader'));
 
 

src/Composer/Autoload/ClassLoader.php

@@ -42,6 +42,8 @@ namespace Composer\Autoload;
  */
 class ClassLoader
 {
+    private $vendorDir;
+
     // PSR-4
     private $prefixLengthsPsr4 = array();
     private $prefixDirsPsr4 = array();
@@ -57,6 +59,13 @@ class ClassLoader
     private $missingClasses = array();
     private $apcuPrefix;
 
+    private static $registeredLoaders = array();
+
+    public function __construct($vendorDir = null)
+    {
+        $this->vendorDir = $vendorDir;
+    }
+
     public function getPrefixes()
     {
         if (!empty($this->prefixesPsr0)) {
@@ -300,6 +309,17 @@ class ClassLoader
     public function register($prepend = false)
     {
         spl_autoload_register(array($this, 'loadClass'), true, $prepend);
+
+        if (null === $this->vendorDir) {
+            return;
+        }
+
+        if ($prepend) {
+            self::$registeredLoaders = array($this->vendorDir => $this) + self::$registeredLoaders;
+        } else {
+            unset(self::$registeredLoaders[$this->vendorDir]);
+            self::$registeredLoaders[$this->vendorDir] = $this;
+        }
     }
 
     /**
@@ -308,6 +328,10 @@ class ClassLoader
     public function unregister()
     {
         spl_autoload_unregister(array($this, 'loadClass'));
+
+        if (null !== $this->vendorDir) {
+            unset(self::$registeredLoaders[$this->vendorDir]);
+        }
     }
 
     /**
@@ -367,6 +391,16 @@ class ClassLoader
         return $file;
     }
 
+    /**
+     * Returns the currently registered loaders indexed by their corresponding vendor directories.
+     *
+     * @return self[]
+     */
+    public static function getRegisteredLoaders()
+    {
+        return self::$registeredLoaders;
+    }
+
     private function findFileWithExtension($class, $ext)
     {
         // PSR-4 lookup

src/Composer/Autoload/ClassMapGenerator.php

@@ -51,7 +51,7 @@ class ClassMapGenerator
      * Iterate over all files in the given directory searching for classes
      *
      * @param \Iterator|string $path         The path to search in or an iterator
-     * @param string           $excluded     Regex that matches against the file path that exclude from the classmap.
+     * @param string           $excluded     Regex that matches file paths to be excluded from the classmap
      * @param IOInterface      $io           IO object
      * @param string           $namespace    Optional namespace prefix to filter by
      * @param string           $autoloadType psr-0|psr-4 Optional autoload standard to use mapping rules

src/Composer/Cache.php

@@ -114,20 +114,21 @@ class Cache
 
             $this->io->writeError('Writing '.$this->root . $file.' into cache', true, IOInterface::DEBUG);
 
+            $tempFileName = $this->root . $file . uniqid('.', true) . '.tmp';
             try {
-                return file_put_contents($this->root . $file.'.tmp', $contents) !== false && rename($this->root . $file . '.tmp', $this->root . $file);
+                return file_put_contents($tempFileName, $contents) !== false && rename($tempFileName, $this->root . $file);
             } catch (\ErrorException $e) {
                 $this->io->writeError('<warning>Failed to write into cache: '.$e->getMessage().'</warning>', true, IOInterface::DEBUG);
                 if (preg_match('{^file_put_contents\(\): Only ([0-9]+) of ([0-9]+) bytes written}', $e->getMessage(), $m)) {
                     // Remove partial file.
-                    unlink($this->root . $file);
+                    unlink($tempFileName);
 
                     $message = sprintf(
                         '<warning>Writing %1$s into cache failed after %2$u of %3$u bytes written, only %4$u bytes of free space available</warning>',
-                        $this->root . $file,
+                        $tempFileName,
                         $m[1],
                         $m[2],
-                        @disk_free_space($this->root . dirname($file))
+                        @disk_free_space(dirname($tempFileName))
                     );
 
                     $this->io->writeError($message);

src/Composer/Command/InstallCommand.php

@@ -15,6 +15,7 @@ namespace Composer\Command;
 use Composer\Installer;
 use Composer\Plugin\CommandEvent;
 use Composer\Plugin\PluginEvents;
+use Composer\Util\HttpDownloader;
 use Symfony\Component\Console\Input\InputInterface;
 use Symfony\Component\Console\Input\InputOption;
 use Symfony\Component\Console\Input\InputArgument;
@@ -93,6 +94,10 @@ EOT
 
         $composer = $this->getComposer(true, $input->getOption('no-plugins'));
 
+        if ((!$composer->getLocker() || !$composer->getLocker()->isLocked()) && !HttpDownloader::isCurlEnabled()) {
+            $io->writeError('<warning>Composer is operating significantly slower than normal because you do not have the PHP curl extension enabled.</warning>');
+        }
+
         $commandEvent = new CommandEvent(PluginEvents::COMMAND, 'install', $input, $output);
         $composer->getEventDispatcher()->dispatch($commandEvent->getName(), $commandEvent);
 

src/Composer/Command/SelfUpdateCommand.php

@@ -126,7 +126,7 @@ EOT
             $composeUser = posix_getpwuid(posix_geteuid());
             $homeOwner = posix_getpwuid(fileowner($home));
             if (isset($composeUser['name'], $homeOwner['name']) && $composeUser['name'] !== $homeOwner['name']) {
-                $io->writeError('<warning>You are running composer as "'.$composeUser['name'].'", while "'.$home.'" is owned by "'.$homeOwner['name'].'"</warning>');
+                $io->writeError('<warning>You are running Composer as "'.$composeUser['name'].'", while "'.$home.'" is owned by "'.$homeOwner['name'].'"</warning>');
             }
         }
 
@@ -185,7 +185,7 @@ EOT
         if (Composer::VERSION === $updateVersion) {
             $io->writeError(
                 sprintf(
-                    '<info>You are already using composer version %s (%s channel).</info>',
+                    '<info>You are already using the latest available Composer version %s (%s channel).</info>',
                     $updateVersion,
                     $channelString
                 )

src/Composer/Command/UpdateCommand.php

@@ -19,6 +19,7 @@ use Composer\IO\IOInterface;
 use Composer\Plugin\CommandEvent;
 use Composer\Plugin\PluginEvents;
 use Composer\Package\Version\VersionParser;
+use Composer\Util\HttpDownloader;
 use Composer\Semver\Constraint\MultiConstraint;
 use Composer\Package\Link;
 use Symfony\Component\Console\Helper\Table;
@@ -114,6 +115,10 @@ EOT
 
         $composer = $this->getComposer(true, $input->getOption('no-plugins'));
 
+        if (!HttpDownloader::isCurlEnabled()) {
+            $io->writeError('<warning>Composer is operating significantly slower than normal because you do not have the PHP curl extension enabled.</warning>');
+        }
+
         $packages = $input->getArgument('packages');
         $reqs = $this->formatRequirements($input->getOption('with'));
 

src/Composer/Config.php

@@ -78,8 +78,7 @@ class Config
     public static $defaultRepositories = array(
         'packagist.org' => array(
             'type' => 'composer',
-            'url' => 'https?://repo.packagist.org',
+            'url' => 'https://repo.packagist.org',
-            'allow_ssl_downgrade' => true,
         ),
     );
 
@@ -180,6 +179,11 @@ class Config
                     continue;
                 }
 
+                // auto-deactivate the default packagist.org repo if it gets redefined
+                if (isset($repository['type'], $repository['url']) && $repository['type'] === 'composer' && preg_match('{^https?://(?:[a-z0-9-.]+\.)?packagist.org(/|$)}', $repository['url'])) {
+                    $this->disableRepoByName('packagist.org');
+                }
+
                 // store repo
                 if (is_int($name)) {
                     $this->repositories[] = $repository;

src/Composer/Console/Application.php

@@ -237,11 +237,11 @@ class Application extends BaseApplication
             }
 
             if (extension_loaded('xdebug') && !getenv('COMPOSER_DISABLE_XDEBUG_WARN')) {
-                $io->writeError('<warning>You are running composer with Xdebug enabled. This has a major impact on runtime performance. See https://getcomposer.org/xdebug</warning>');
+                $io->writeError('<warning>Composer is operating slower than normal because you have Xdebug enabled. See https://getcomposer.org/xdebug</warning>');
             }
 
             if (defined('COMPOSER_DEV_WARNING_TIME') && $commandName !== 'self-update' && $commandName !== 'selfupdate' && time() > COMPOSER_DEV_WARNING_TIME) {
-                $io->writeError(sprintf('<warning>Warning: This development build of composer is over 60 days old. It is recommended to update it by running "%s self-update" to get the latest version.</warning>', $_SERVER['PHP_SELF']));
+                $io->writeError(sprintf('<warning>Warning: This development build of Composer is over 60 days old. It is recommended to update it by running "%s self-update" to get the latest version.</warning>', $_SERVER['PHP_SELF']));
             }
 
             if (
@@ -309,8 +309,9 @@ class Application extends BaseApplication
 
             $result = parent::doRun($input, $output);
 
+            // chdir back to $oldWorkingDir if set
             if (isset($oldWorkingDir)) {
-                chdir($oldWorkingDir);
+                Silencer::call('chdir', $oldWorkingDir);
             }
 
             if (isset($startTime)) {

src/Composer/DependencyResolver/SolverProblemsException.php

@@ -63,7 +63,7 @@ class SolverProblemsException extends \RuntimeException
             $hints[] = $this->createExtensionHint();
         }
 
-        if ($isCausedByLock && !$isDevExtraction) {
+        if ($isCausedByLock && !$isDevExtraction && !$request->getUpdateAllowTransitiveRootDependencies()) {
             $hints[] = "Use the option --with-all-dependencies (-W) to allow upgrades, downgrades and removals for packages currently locked to specific versions.";
         }
 

src/Composer/Downloader/FileDownloader.php

@@ -16,6 +16,7 @@ use Composer\Config;
 use Composer\Cache;
 use Composer\IO\IOInterface;
 use Composer\IO\NullIO;
+use Composer\Exception\IrrecoverableDownloadException;
 use Composer\Package\Comparer\Comparer;
 use Composer\DependencyResolver\Operation\UpdateOperation;
 use Composer\DependencyResolver\Operation\InstallOperation;
@@ -219,6 +220,10 @@ class FileDownloader implements DownloaderInterface, ChangeReportInterface
             }
             $self->clearLastCacheWrite($package);
 
+            if ($e instanceof IrrecoverableDownloadException) {
+                throw $e;
+            }
+
             if ($e instanceof TransportException) {
                 // if we got an http response with a proper code, then requesting again will probably not help, abort
                 if ((0 !== $e->getCode() && !in_array($e->getCode(), array(500, 502, 503, 504))) || !$retries) {

src/Composer/Downloader/GitDownloader.php

@@ -71,6 +71,8 @@ class GitDownloader extends VcsDownloader implements DvcsDownloaderInterface
             if ($this->gitUtil->fetchRefOrSyncMirror($url, $cachePath, $ref) && is_dir($cachePath)) {
                 $this->cachedPackages[$package->getId()][$ref] = true;
             }
+        } elseif (null === $gitVersion) {
+            throw new \RuntimeException('git was not found in your PATH, skipping source download');
         }
     }
 
@@ -454,13 +456,10 @@ class GitDownloader extends VcsDownloader implements DvcsDownloaderInterface
 
             $command = sprintf('git checkout %s --', ProcessExecutor::escape($branch));
             $fallbackCommand = sprintf('git checkout '.$force.'-B %s %s --', ProcessExecutor::escape($branch), ProcessExecutor::escape('composer/'.$branch));
-            if (0 === $this->process->execute($command, $output, $path)
+            $resetCommand = sprintf('git reset --hard %s --', ProcessExecutor::escape($reference));
-                || 0 === $this->process->execute($fallbackCommand, $output, $path)
+
-            ) {
+            if (0 === $this->process->execute("($command || $fallbackCommand) && $resetCommand", $output, $path)) {
-                $command = sprintf('git reset --hard %s --', ProcessExecutor::escape($reference));
+                return null;
-                if (0 === $this->process->execute($command, $output, $path)) {
-                    return null;
-                }
             }
         }
 

src/Composer/Downloader/HgDownloader.php

@@ -26,6 +26,9 @@ class HgDownloader extends VcsDownloader
      */
     protected function doDownload(PackageInterface $package, $path, $url, PackageInterface $prevPackage = null)
     {
+        if (null === HgUtils::getVersion($this->process)) {
+            throw new \RuntimeException('hg was not found in your PATH, skipping source download');
+        }
     }
 
     /**

src/Composer/Downloader/SvnDownloader.php

@@ -30,6 +30,11 @@ class SvnDownloader extends VcsDownloader
      */
     protected function doDownload(PackageInterface $package, $path, $url, PackageInterface $prevPackage = null)
     {
+        SvnUtil::cleanEnv();
+        $util = new SvnUtil($url, $this->io, $this->config, $this->process);
+        if (null === $util->binaryVersion()) {
+            throw new \RuntimeException('svn was not found in your PATH, skipping source download');
+        }
     }
 
     /**

src/Composer/Downloader/TransportException.php

@@ -20,6 +20,7 @@ class TransportException extends \RuntimeException
     protected $headers;
     protected $response;
     protected $statusCode;
+    protected $responseInfo = array();
 
     public function setHeaders($headers)
     {
@@ -50,4 +51,20 @@ class TransportException extends \RuntimeException
     {
         return $this->statusCode;
     }
+
+    /**
+     * @return array
+     */
+    public function getResponseInfo()
+    {
+        return $this->responseInfo;
+    }
+
+    /**
+     * @param array $responseInfo
+     */
+    public function setResponseInfo(array $responseInfo)
+    {
+        $this->responseInfo = $responseInfo;
+    }
 }

src/Composer/EventDispatcher/EventDispatcher.php

@@ -243,6 +243,8 @@ class EventDispatcher
 
                 if (strpos($exec, '@putenv ') === 0) {
                     putenv(substr($exec, 8));
+                    list($var, $value) = explode('=', substr($exec, 8), 2);
+                    $_SERVER[$var] = $value;
 
                     continue;
                 }

src/Composer/InstalledVersions.php

@@ -12,6 +12,7 @@
 
 namespace Composer;
 
+use Composer\Autoload\ClassLoader;
 use Composer\Semver\VersionParser;
 
 /**
@@ -22,6 +23,8 @@ use Composer\Semver\VersionParser;
 class InstalledVersions
 {
     private static $installed;
+    private static $canGetVendors;
+    private static $installedByVendor = array();
 
     /**
      * Returns a list of all package names which are present, either by being installed, replaced or provided
@@ -31,7 +34,17 @@ class InstalledVersions
      */
     public static function getInstalledPackages()
     {
-        return array_keys(self::$installed['versions']);
+        $packages = array();
+        foreach (self::getInstalled() as $installed) {
+            $packages[] = array_keys($installed['versions']);
+        }
+
+
+        if (1 === \count($packages)) {
+            return $packages[0];
+        }
+
+        return array_keys(array_flip(\call_user_func_array('array_merge', $packages)));
     }
 
     /**
@@ -44,7 +57,13 @@ class InstalledVersions
      */
     public static function isInstalled($packageName)
     {
-        return isset(self::$installed['versions'][$packageName]);
+        foreach (self::getInstalled() as $installed) {
+            if (isset($installed['versions'][$packageName])) {
+                return true;
+            }
+        }
+
+        return false;
     }
 
     /**
@@ -79,25 +98,29 @@ class InstalledVersions
      */
     public static function getVersionRanges($packageName)
     {
-        if (!isset(self::$installed['versions'][$packageName])) {
+        foreach (self::getInstalled() as $installed) {
-            throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
+            if (!isset($installed['versions'][$packageName])) {
+                continue;
+            }
+
+            $ranges = array();
+            if (isset($installed['versions'][$packageName]['pretty_version'])) {
+                $ranges[] = $installed['versions'][$packageName]['pretty_version'];
+            }
+            if (array_key_exists('aliases', $installed['versions'][$packageName])) {
+                $ranges = array_merge($ranges, $installed['versions'][$packageName]['aliases']);
+            }
+            if (array_key_exists('replaced', $installed['versions'][$packageName])) {
+                $ranges = array_merge($ranges, $installed['versions'][$packageName]['replaced']);
+            }
+            if (array_key_exists('provided', $installed['versions'][$packageName])) {
+                $ranges = array_merge($ranges, $installed['versions'][$packageName]['provided']);
+            }
+
+            return implode(' || ', $ranges);
         }
 
-        $ranges = array();
+        throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
-        if (isset(self::$installed['versions'][$packageName]['pretty_version'])) {
-            $ranges[] = self::$installed['versions'][$packageName]['pretty_version'];
-        }
-        if (array_key_exists('aliases', self::$installed['versions'][$packageName])) {
-            $ranges = array_merge($ranges, self::$installed['versions'][$packageName]['aliases']);
-        }
-        if (array_key_exists('replaced', self::$installed['versions'][$packageName])) {
-            $ranges = array_merge($ranges, self::$installed['versions'][$packageName]['replaced']);
-        }
-        if (array_key_exists('provided', self::$installed['versions'][$packageName])) {
-            $ranges = array_merge($ranges, self::$installed['versions'][$packageName]['provided']);
-        }
-
-        return implode(' || ', $ranges);
     }
 
     /**
@@ -106,15 +129,19 @@ class InstalledVersions
      */
     public static function getVersion($packageName)
     {
-        if (!isset(self::$installed['versions'][$packageName])) {
+        foreach (self::getInstalled() as $installed) {
-            throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
+            if (!isset($installed['versions'][$packageName])) {
+                continue;
+            }
+
+            if (!isset($installed['versions'][$packageName]['version'])) {
+                return null;
+            }
+
+            return $installed['versions'][$packageName]['version'];
         }
 
-        if (!isset(self::$installed['versions'][$packageName]['version'])) {
+        throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
-            return null;
-        }
-
-        return self::$installed['versions'][$packageName]['version'];
     }
 
     /**
@@ -123,15 +150,19 @@ class InstalledVersions
      */
     public static function getPrettyVersion($packageName)
     {
-        if (!isset(self::$installed['versions'][$packageName])) {
+        foreach (self::getInstalled() as $installed) {
-            throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
+            if (!isset($installed['versions'][$packageName])) {
+                continue;
+            }
+
+            if (!isset($installed['versions'][$packageName]['pretty_version'])) {
+                return null;
+            }
+
+            return $installed['versions'][$packageName]['pretty_version'];
         }
 
-        if (!isset(self::$installed['versions'][$packageName]['pretty_version'])) {
+        throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
-            return null;
-        }
-
-        return self::$installed['versions'][$packageName]['pretty_version'];
     }
 
     /**
@@ -140,15 +171,19 @@ class InstalledVersions
      */
     public static function getReference($packageName)
     {
-        if (!isset(self::$installed['versions'][$packageName])) {
+        foreach (self::getInstalled() as $installed) {
-            throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
+            if (!isset($installed['versions'][$packageName])) {
+                continue;
+            }
+
+            if (!isset($installed['versions'][$packageName]['reference'])) {
+                return null;
+            }
+
+            return $installed['versions'][$packageName]['reference'];
         }
 
-        if (!isset(self::$installed['versions'][$packageName]['reference'])) {
+        throw new \OutOfBoundsException('Package "' . $packageName . '" is not installed');
-            return null;
-        }
-
-        return self::$installed['versions'][$packageName]['reference'];
     }
 
     /**
@@ -157,7 +192,9 @@ class InstalledVersions
      */
     public static function getRootPackage()
     {
-        return self::$installed['root'];
+        $installed = self::getInstalled();
+
+        return $installed[0]['root'];
     }
 
     /**
@@ -192,5 +229,32 @@ class InstalledVersions
     public static function reload($data)
     {
         self::$installed = $data;
+        self::$installedByVendor = array();
+    }
+
+    /**
+     * @return array[]
+     */
+    private static function getInstalled()
+    {
+        if (null === self::$canGetVendors) {
+            self::$canGetVendors = method_exists('Composer\Autoload\ClassLoader', 'getRegisteredLoaders');
+        }
+
+        $installed = array();
+
+        if (self::$canGetVendors) {
+            foreach (ClassLoader::getRegisteredLoaders() as $vendorDir => $loader) {
+                if (isset(self::$installedByVendor[$vendorDir])) {
+                    $installed[] = self::$installedByVendor[$vendorDir];
+                } elseif (is_file($vendorDir.'/composer/installed.php')) {
+                    $installed[] = self::$installedByVendor[$vendorDir] = require $vendorDir.'/composer/installed.php';
+                }
+            }
+        }
+
+        $installed[] = self::$installed;
+
+        return $installed;
     }
 }

src/Composer/Installer.php

@@ -43,12 +43,14 @@ use Composer\Package\Version\VersionParser;
 use Composer\Package\Package;
 use Composer\Repository\ArrayRepository;
 use Composer\Repository\RepositorySet;
+use Composer\Repository\CompositeRepository;
 use Composer\Semver\Constraint\Constraint;
 use Composer\Package\Locker;
 use Composer\Package\RootPackageInterface;
 use Composer\Repository\InstalledArrayRepository;
 use Composer\Repository\InstalledRepositoryInterface;
 use Composer\Repository\InstalledRepository;
+use Composer\Repository\FilterRepository;
 use Composer\Repository\RootPackageRepository;
 use Composer\Repository\PlatformRepository;
 use Composer\Repository\RepositoryInterface;
@@ -706,7 +708,7 @@ class Installer
         return 0;
     }
 
-    private function createPlatformRepo($forUpdate)
+    protected function createPlatformRepo($forUpdate)
     {
         if ($forUpdate) {
             $platformOverrides = $this->config->get('platform') ?: array();
@@ -766,6 +768,21 @@ class Installer
         $repositorySet->addRepository(new RootPackageRepository($this->fixedRootPackage));
         $repositorySet->addRepository($platformRepo);
         if ($this->additionalFixedRepository) {
+            // allow using installed repos if needed to avoid warnings about installed repositories being used in the RepositorySet
+            // see https://github.com/composer/composer/pull/9574
+            $additionalFixedRepositories = $this->additionalFixedRepository;
+            if ($additionalFixedRepositories instanceof CompositeRepository) {
+                $additionalFixedRepositories = $additionalFixedRepositories->getRepositories();
+            } else {
+                $additionalFixedRepositories = array($additionalFixedRepositories);
+            }
+            foreach ($additionalFixedRepositories as $additionalFixedRepository) {
+                if ($additionalFixedRepository instanceof InstalledRepository || $additionalFixedRepository instanceof InstalledRepositoryInterface) {
+                    $repositorySet->allowInstalledRepositories();
+                    break;
+                }
+            }
+
             $repositorySet->addRepository($this->additionalFixedRepository);
         }
 

src/Composer/Installer/InstallationManager.php

@@ -492,9 +492,15 @@ class InstallationManager
             $promise = $installer->update($repo, $initial, $target);
             $this->markForNotification($target);
         } else {
-            $this->getInstaller($initialType)->uninstall($repo, $initial);
+            $promise = $this->getInstaller($initialType)->uninstall($repo, $initial);
+            if (!$promise instanceof PromiseInterface) {
+                $promise = \React\Promise\resolve();
+            }
+
             $installer = $this->getInstaller($targetType);
-            $promise = $installer->install($repo, $target);
+            $promise->then(function () use ($installer, $repo, $target) {
+                return $installer->install($repo, $target);
+            });
         }
 
         return $promise;

src/Composer/Json/JsonFile.php

@@ -80,6 +80,7 @@ class JsonFile
     /**
      * Reads json file.
      *
+     * @throws ParsingException
      * @throws \RuntimeException
      * @return mixed
      */
@@ -172,6 +173,7 @@ class JsonFile
      * @param  int                     $schema     a JsonFile::*_SCHEMA constant
      * @param  string|null             $schemaFile a path to the schema file
      * @throws JsonValidationException
+     * @throws ParsingException
      * @return bool                    true on success
      */
     public function validateSchema($schema = self::STRICT_SCHEMA, $schemaFile = null)
@@ -289,6 +291,7 @@ class JsonFile
      * @param string $json json string
      * @param string $file the json file
      *
+     * @throws ParsingException
      * @return mixed
      */
     public static function parseJson($json, $file = null)

src/Composer/Json/JsonManipulator.php

@@ -20,13 +20,13 @@ use Composer\Repository\PlatformRepository;
 class JsonManipulator
 {
     private static $DEFINES = '(?(DEFINE)
-       (?<number>   -? (?= [1-9]|0(?!\d) ) \d+ (\.\d+)? ([eE] [+-]? \d+)? )
+       (?<number>    -? (?= [1-9]|0(?!\d) ) \d++ (\.\d++)? ([eE] [+-]?+ \d++)? )
        (?<boolean>   true | false | null )
-       (?<string>    " ([^"\\\\]* | \\\\ ["\\\\bfnrt\/] | \\\\ u [0-9A-Fa-f]{4} )* " )
+       (?<string>    " ([^"\\\\]*+ | \\\\ ["\\\\bfnrt\/] | \\\\ u [0-9A-Fa-f]{4} )* " )
-       (?<array>     \[  (?:  (?&json) \s* (?: , (?&json) \s* )*  )?  \s* \] )
+       (?<array>     \[  (?:  (?&json) \s*+ (?: , (?&json) \s*+ )*+  )?+  \s*+ \] )
-       (?<pair>      \s* (?&string) \s* : (?&json) \s* )
+       (?<pair>      \s*+ (?&string) \s*+ : (?&json) \s*+ )
-       (?<object>    \{  (?:  (?&pair)  (?: , (?&pair)  )*  )?  \s* \} )
+       (?<object>    \{  (?:  (?&pair)  (?: , (?&pair)  )*+  )?+  \s*+ \} )
-       (?<json>   \s* (?: (?&number) | (?&boolean) | (?&string) | (?&array) | (?&object) ) )
+       (?<json>      \s*+ (?: (?&number) | (?&boolean) | (?&string) | (?&array) | (?&object) ) )
     )';
 
     private $contents;

src/Composer/Package/Archiver/BaseExcludeFilter.php

@@ -123,26 +123,25 @@ abstract class BaseExcludeFilter
     protected function generatePattern($rule)
     {
         $negate = false;
-        $pattern = '{';
+        $pattern = '';
 
-        if (strlen($rule) && $rule[0] === '!') {
+        if ($rule !== '' && $rule[0] === '!') {
             $negate = true;
-            $rule = substr($rule, 1);
+            $rule = ltrim($rule, '!');
         }
 
-        if (strlen($rule) && $rule[0] === '/') {
+        $firstSlashPosition = strpos($rule, '/');
-            $pattern .= '^/';
+        if (0 === $firstSlashPosition) {
-            $rule = substr($rule, 1);
+            $pattern = '^/';
-        } elseif (strlen($rule) - 1 === strpos($rule, '/')) {
+        } elseif (false === $firstSlashPosition || strlen($rule) - 1 === $firstSlashPosition) {
-            $pattern .= '/';
+            $pattern = '/';
-            $rule = substr($rule, 0, -1);
-        } elseif (false === strpos($rule, '/')) {
-            $pattern .= '/';
         }
 
+        $rule = trim($rule, '/');
+        
         // remove delimiters as well as caret (^) and dollar sign ($) from the regex
-        $pattern .= substr(Finder\Glob::toRegex($rule), 2, -2) . '(?=$|/)';
+        $rule = substr(Finder\Glob::toRegex($rule), 2, -2);
 
-        return array($pattern . '}', $negate, false);
+        return array('{'.$pattern.$rule.'(?=$|/)}', $negate, false);
     }
 }

src/Composer/Package/Loader/RootPackageLoader.php

@@ -74,10 +74,8 @@ class RootPackageLoader extends ArrayLoader
         if (!isset($config['version'])) {
             $commit = null;
 
-            if (isset($config['extra']['branch-version'])) {
+            // override with env var if available
-                $config['version'] = preg_replace('{(\.x)?(-dev)?$}', '', $config['extra']['branch-version']).'.x-dev';
+            if (getenv('COMPOSER_ROOT_VERSION')) {
-            } elseif (getenv('COMPOSER_ROOT_VERSION')) {
-                // override with env var if available
                 $config['version'] = getenv('COMPOSER_ROOT_VERSION');
             } else {
                 $versionData = $this->versionGuesser->guessVersion($config, $cwd ?: getcwd());

src/Composer/Plugin/PluginManager.php

@@ -21,7 +21,9 @@ use Composer\Package\RootPackage;
 use Composer\Package\Version\VersionParser;
 use Composer\Repository\RepositoryInterface;
 use Composer\Repository\InstalledRepository;
+use Composer\Repository\RootPackageRepository;
 use Composer\Package\PackageInterface;
+use Composer\Package\RootPackageInterface;
 use Composer\Package\Link;
 use Composer\Semver\Constraint\Constraint;
 use Composer\Plugin\Capability\Capability;
@@ -174,7 +176,9 @@ class PluginManager
         $localRepo = $this->composer->getRepositoryManager()->getLocalRepository();
         $globalRepo = $this->globalComposer ? $this->globalComposer->getRepositoryManager()->getLocalRepository() : null;
 
-        $installedRepo = new InstalledRepository(array($localRepo));
+        $rootPackage = clone $this->composer->getPackage();
+        $rootPackageRepo = new RootPackageRepository($rootPackage);
+        $installedRepo = new InstalledRepository(array($localRepo, $rootPackageRepo));
         if ($globalRepo) {
             $installedRepo->addRepository($globalRepo);
         }
@@ -183,13 +187,17 @@ class PluginManager
         $autoloadPackages = $this->collectDependencies($installedRepo, $autoloadPackages, $package);
 
         $generator = $this->composer->getAutoloadGenerator();
-        $autoloads = array();
+        $autoloads = array(array($rootPackage, ''));
         foreach ($autoloadPackages as $autoloadPackage) {
+            if ($autoloadPackage === $rootPackage) {
+                continue;
+            }
+
             $downloadPath = $this->getInstallPath($autoloadPackage, $globalRepo && $globalRepo->hasPackage($autoloadPackage));
             $autoloads[] = array($autoloadPackage, $downloadPath);
         }
 
-        $map = $generator->parseAutoloads($autoloads, new RootPackage('dummy/root-package', '1.0.0.0', '1.0.0'));
+        $map = $generator->parseAutoloads($autoloads, $rootPackage);
         $classLoader = $generator->createLoader($map);
         $classLoader->register();
 
@@ -403,12 +411,7 @@ class PluginManager
      */
     private function collectDependencies(InstalledRepository $installedRepo, array $collected, PackageInterface $package)
     {
-        $requires = array_merge(
+        foreach ($package->getRequires() as $requireLink) {
-            $package->getRequires(),
-            $package->getDevRequires()
-        );
-
-        foreach ($requires as $requireLink) {
             foreach ($installedRepo->findPackagesWithReplacersAndProviders($requireLink->getTarget()) as $requiredPackage) {
                 if (!isset($collected[$requiredPackage->getName()])) {
                     $collected[$requiredPackage->getName()] = $requiredPackage;

src/Composer/Repository/ComposerRepository.php

@@ -532,6 +532,7 @@ class ComposerRepository extends ArrayRepository implements ConfigurableReposito
      */
     private function whatProvides($name, array $acceptableStabilities = null, array $stabilityFlags = null, array $alreadyLoaded = array())
     {
+        $packagesSource = null;
         if (!$this->hasPartialPackages() || !isset($this->partialPackagesByName[$name])) {
             // skip platform packages, root package and composer-plugin-api
             if (PlatformRepository::isPlatformPackage($name) || '__root__' === $name) {
@@ -565,15 +566,18 @@ class ComposerRepository extends ArrayRepository implements ConfigurableReposito
             if ($cacheKey) {
                 if (!$useLastModifiedCheck && $hash && $this->cache->sha256($cacheKey) === $hash) {
                     $packages = json_decode($this->cache->read($cacheKey), true);
+                    $packagesSource = 'cached file ('.$cacheKey.' originating from '.Url::sanitize($url).')';
                 } elseif ($useLastModifiedCheck) {
                     if ($contents = $this->cache->read($cacheKey)) {
                         $contents = json_decode($contents, true);
                         // we already loaded some packages from this file, so assume it is fresh and avoid fetching it again
                         if (isset($alreadyLoaded[$name])) {
                             $packages = $contents;
+                            $packagesSource = 'cached file ('.$cacheKey.' originating from '.Url::sanitize($url).')';
                         } elseif (isset($contents['last-modified'])) {
                             $response = $this->fetchFileIfLastModified($url, $cacheKey, $contents['last-modified']);
                             $packages = true === $response ? $contents : $response;
+                            $packagesSource = true === $response ? 'cached file ('.$cacheKey.' originating from '.Url::sanitize($url).')' : 'downloaded file ('.Url::sanitize($url).')';
                         }
                     }
                 }
@@ -582,10 +586,12 @@ class ComposerRepository extends ArrayRepository implements ConfigurableReposito
             if (!$packages) {
                 try {
                     $packages = $this->fetchFile($url, $cacheKey, $hash, $useLastModifiedCheck);
+                    $packagesSource = 'downloaded file ('.Url::sanitize($url).')';
                 } catch (TransportException $e) {
                     // 404s are acceptable for lazy provider repos
                     if ($this->lazyProvidersUrl && in_array($e->getStatusCode(), array(404, 499), true)) {
                         $packages = array('packages' => array());
+                        $packagesSource = 'not-found file ('.Url::sanitize($url).')';
                         if ($e->getStatusCode() === 499) {
                             $this->io->error('<warning>' . $e->getMessage() . '</warning>');
                         }
@@ -598,6 +604,7 @@ class ComposerRepository extends ArrayRepository implements ConfigurableReposito
             $loadingPartialPackage = false;
         } else {
             $packages = array('packages' => array('versions' => $this->partialPackagesByName[$name]));
+            $packagesSource = 'root file ('.Url::sanitize($this->getPackagesJsonUrl()).')';
             $loadingPartialPackage = true;
         }
 
@@ -637,7 +644,7 @@ class ComposerRepository extends ArrayRepository implements ConfigurableReposito
         }
 
         // load acceptable packages in the providers
-        $loadedPackages = $this->createPackages($versionsToLoad);
+        $loadedPackages = $this->createPackages($versionsToLoad, $packagesSource);
         $uids = array_keys($versionsToLoad);
 
         foreach ($loadedPackages as $index => $package) {
@@ -667,7 +674,7 @@ class ComposerRepository extends ArrayRepository implements ConfigurableReposito
 
         $repoData = $this->loadDataFromServer();
 
-        foreach ($this->createPackages($repoData) as $package) {
+        foreach ($this->createPackages($repoData, 'root file ('.Url::sanitize($this->getPackagesJsonUrl()).')') as $package) {
             $this->addPackage($package);
         }
     }
@@ -729,8 +736,11 @@ class ComposerRepository extends ArrayRepository implements ConfigurableReposito
             }
 
             $promises[] = $this->asyncFetchFile($url, $cacheKey, $lastModified)
-                ->then(function ($response) use (&$packages, &$namesFound, $contents, $realName, $constraint, $repo, $acceptableStabilities, $stabilityFlags, $alreadyLoaded) {
+                ->then(function ($response) use (&$packages, &$namesFound, $url, $cacheKey, $contents, $realName, $constraint, $repo, $acceptableStabilities, $stabilityFlags, $alreadyLoaded) {
+                    $packagesSource = 'downloaded file ('.Url::sanitize($url).')';
+
                     if (true === $response) {
+                        $packagesSource = 'cached file ('.$cacheKey.' originating from '.Url::sanitize($url).')';
                         $response = $contents;
                     }
 
@@ -764,7 +774,7 @@ class ComposerRepository extends ArrayRepository implements ConfigurableReposito
                         }
                     }
 
-                    $loadedPackages = $repo->createPackages($versionsToLoad);
+                    $loadedPackages = $repo->createPackages($versionsToLoad, $packagesSource);
                     foreach ($loadedPackages as $package) {
                         $package->setRepository($repo);
                         $packages[spl_object_hash($package)] = $package;
@@ -812,6 +822,17 @@ class ComposerRepository extends ArrayRepository implements ConfigurableReposito
         return false;
     }
 
+    private function getPackagesJsonUrl()
+    {
+        $jsonUrlParts = parse_url($this->url);
+
+        if (isset($jsonUrlParts['path']) && false !== strpos($jsonUrlParts['path'], '.json')) {
+            return $this->url;
+        }
+
+        return $this->url . '/packages.json';
+    }
+
     protected function loadRootServerFile()
     {
         if (null !== $this->rootData) {
@@ -822,15 +843,7 @@ class ComposerRepository extends ArrayRepository implements ConfigurableReposito
             throw new \RuntimeException('You must enable the openssl extension in your php.ini to load information from '.$this->url);
         }
 
-        $jsonUrlParts = parse_url($this->url);
+        $data = $this->fetchFile($this->getPackagesJsonUrl(), 'packages.json');
-
-        if (isset($jsonUrlParts['path']) && false !== strpos($jsonUrlParts['path'], '.json')) {
-            $jsonUrl = $this->url;
-        } else {
-            $jsonUrl = $this->url . '/packages.json';
-        }
-
-        $data = $this->fetchFile($jsonUrl, 'packages.json');
 
         if (!empty($data['notify-batch'])) {
             $this->notifyUrl = $this->canonicalizeUrl($data['notify-batch']);
@@ -1027,7 +1040,7 @@ class ComposerRepository extends ArrayRepository implements ConfigurableReposito
      *
      * @private
      */
-    public function createPackages(array $packages, $class = 'Composer\Package\CompletePackage')
+    public function createPackages(array $packages, $source = null)
     {
         if (!$packages) {
             return array();
@@ -1040,7 +1053,7 @@ class ComposerRepository extends ArrayRepository implements ConfigurableReposito
                 }
             }
 
-            $packages = $this->loader->loadPackages($packages, $class);
+            $packages = $this->loader->loadPackages($packages, 'Composer\Package\CompletePackage');
 
             foreach ($packages as $package) {
                 if (isset($this->sourceMirrors[$package->getSourceType()])) {
@@ -1052,7 +1065,7 @@ class ComposerRepository extends ArrayRepository implements ConfigurableReposito
 
             return $packages;
         } catch (\Exception $e) {
-            throw new \RuntimeException('Could not load packages '.(isset($packages[0]['name']) ? $packages[0]['name'] : json_encode($packages)).' in '.$this->url.': ['.get_class($e).'] '.$e->getMessage(), 0, $e);
+            throw new \RuntimeException('Could not load packages '.(isset($packages[0]['name']) ? $packages[0]['name'] : json_encode($packages)).' in '.$this->getRepoName().($source ? ' from '.$source : '').': ['.get_class($e).'] '.$e->getMessage(), 0, $e);
         }
     }
 

src/Composer/Repository/FilesystemRepository.php

@@ -204,6 +204,9 @@ class FilesystemRepository extends WritableArrayRepository
 
             $fs->filePutContentsIfModified($repoDir.'/installed.php', '<?php return '.var_export($versions, true).';'."\n");
             $installedVersionsClass = file_get_contents(__DIR__.'/../InstalledVersions.php');
+            // while not strictly needed since https://github.com/composer/composer/pull/9635 - we keep this for BC
+            // and overall broader compatibility with people that may not use Composer's ClassLoader. They can
+            // simply include InstalledVersions.php manually and have it working in a basic way.
             $installedVersionsClass = str_replace('private static $installed;', 'private static $installed = '.var_export($versions, true).';', $installedVersionsClass);
             $fs->filePutContentsIfModified($repoDir.'/InstalledVersions.php', $installedVersionsClass);
 

src/Composer/Repository/PathRepository.php

@@ -170,10 +170,11 @@ class PathRepository extends ArrayRepository implements ConfigurableRepositoryIn
                 'reference' => sha1($json . serialize($this->options)),
             );
             $package['transport-options'] = $this->options;
+            unset($package['transport-options']['versions']);
 
-            // use the branch-version as the package version if available
+            // use the version provided as option if available
-            if (!isset($package['version']) && isset($package['extra']['branch-version'])) {
+            if (isset($package['name'], $this->options['versions'][$package['name']])) {
-                $package['version'] = preg_replace('{(\.x)?(-dev)?$}', '', $package['extra']['branch-version']).'.x-dev';
+                $package['version'] = $this->options['versions'][$package['name']];
             }
 
             // carry over the root package version if this path repo is in the same git repository as root package

src/Composer/Repository/Vcs/GitDriver.php

@@ -37,6 +37,9 @@ class GitDriver extends VcsDriver
     {
         if (Filesystem::isLocalPath($this->url)) {
             $this->url = preg_replace('{[\\/]\.git/?$}', '', $this->url);
+            if (!is_dir($this->url)) {
+                throw new \RuntimeException('Failed to read package information from '.$this->url.' as the path does not exist');
+            }
             $this->repoDir = $this->url;
             $cacheUrl = realpath($this->url);
         } else {

src/Composer/Util/Filesystem.php

@@ -63,7 +63,7 @@ class Filesystem
 
     public function emptyDirectory($dir, $ensureDirectoryExists = true)
     {
-        if (file_exists($dir) && is_link($dir)) {
+        if (is_link($dir) && file_exists($dir)) {
             $this->unlink($dir);
         }
 
@@ -108,7 +108,7 @@ class Filesystem
             return unlink($directory);
         }
 
-        if (!file_exists($directory) || !is_dir($directory)) {
+        if (!is_dir($directory) || !file_exists($directory)) {
             return true;
         }
 
@@ -131,7 +131,7 @@ class Filesystem
         // clear stat cache because external processes aren't tracked by the php stat cache
         clearstatcache();
 
-        if ($result && !file_exists($directory)) {
+        if ($result && !is_dir($directory)) {
             return true;
         }
 
@@ -600,7 +600,7 @@ class Filesystem
         if (!function_exists('symlink')) {
             return false;
         }
-    
+
         $cwd = getcwd();
 
         $relativePath = $this->findShortestPath($link, $target);

src/Composer/Util/Git.php

@@ -101,7 +101,7 @@ class Git
             $errorMsg = $this->process->getErrorOutput();
             // private github repository without ssh key access, try https with auth
             if (preg_match('{^git@' . self::getGitHubDomainsRegex($this->config) . ':(.+?)\.git$}i', $url, $match)
-                || preg_match('{^https?://' . self::getGitHubDomainsRegex($this->config) . '/(.*)}', $url, $match)
+                || preg_match('{^https?://' . self::getGitHubDomainsRegex($this->config) . '/(.*?)(?:\.git)?$}i', $url, $match)
             ) {
                 if (!$this->io->hasAuthentication($match[1])) {
                     $gitHubUtil = new GitHub($this->io, $this->config, $this->process);
@@ -122,7 +122,7 @@ class Git
 
                     $errorMsg = $this->process->getErrorOutput();
                 }
-            } elseif (preg_match('{^https://(bitbucket\.org)/(.*)(\.git)?$}U', $url, $match)) { //bitbucket oauth
+            } elseif (preg_match('{^https://(bitbucket\.org)/(.*?)(?:\.git)?$}i', $url, $match)) { //bitbucket oauth
                 $bitbucketUtil = new Bitbucket($this->io, $this->config, $this->process);
 
                 if (!$this->io->hasAuthentication($match[1])) {
@@ -167,7 +167,7 @@ class Git
                 }
             } elseif (
                 preg_match('{^(git)@' . self::getGitLabDomainsRegex($this->config) . ':(.+?\.git)$}i', $url, $match)
-                || preg_match('{^(https?)://' . self::getGitLabDomainsRegex($this->config) . '/(.*)}', $url, $match)
+                || preg_match('{^(https?)://' . self::getGitLabDomainsRegex($this->config) . '/(.*)}i', $url, $match)
             ) {
                 if ($match[1] === 'git') {
                     $match[1] = 'https';
@@ -354,7 +354,7 @@ class Git
         // added in git 1.7.1, prevents prompting the user for username/password
         if (getenv('GIT_ASKPASS') !== 'echo') {
             putenv('GIT_ASKPASS=echo');
-            unset($_SERVER['GIT_ASKPASS']);
+            $_SERVER['GIT_ASKPASS'] = 'echo';
         }
 
         // clean up rogue git env vars in case this is running in a git hook
@@ -370,6 +370,7 @@ class Git
         // Run processes with predictable LANGUAGE
         if (getenv('LANGUAGE') !== 'C') {
             putenv('LANGUAGE=C');
+            $_SERVER['LANGUAGE'] = 'C';
         }
 
         // clean up env for OSX, see https://github.com/composer/composer/issues/2146#issuecomment-35478940
@@ -402,15 +403,12 @@ class Git
     /**
      * Retrieves the current git version.
      *
-     * @return string|null The git version number.
+     * @return string|null The git version number, if present.
      */
     public static function getVersion(ProcessExecutor $process)
     {
         if (false === self::$version) {
             self::$version = null;
-            if (!$process) {
-                $process = new ProcessExecutor;
-            }
             if (0 === $process->execute('git --version', $output) && preg_match('/^git version (\d+(?:\.\d+)+)/m', $output, $matches)) {
                 self::$version = $matches[1];
             }

src/Composer/Util/Hg.php

@@ -20,6 +20,8 @@ use Composer\IO\IOInterface;
  */
 class Hg
 {
+    private static $version = false;
+
     /**
      * @var \Composer\IO\IOInterface
      */
@@ -74,10 +76,27 @@ class Hg
 
     private function throwException($message, $url)
     {
-        if (0 !== $this->process->execute('hg --version', $ignoredOutput)) {
+        if (null === self::getVersion($this->process)) {
             throw new \RuntimeException(Url::sanitize('Failed to clone ' . $url . ', hg was not found, check that it is installed and in your PATH env.' . "\n\n" . $this->process->getErrorOutput()));
         }
 
         throw new \RuntimeException(Url::sanitize($message));
     }
+
+    /**
+     * Retrieves the current hg version.
+     *
+     * @return string|null The hg version number, if present.
+     */
+    public static function getVersion(ProcessExecutor $process)
+    {
+        if (false === self::$version) {
+            self::$version = null;
+            if (0 === $process->execute('hg --version', $output) && preg_match('/version (\d+(?:\.\d+)+)/m', $output, $matches)) {
+                self::$version = $matches[1];
+            }
+        }
+
+        return self::$version;
+    }
 }

src/Composer/Util/Http/CurlDownloader.php

@@ -321,12 +321,12 @@ class CurlDownloader
                         rewind($job['bodyHandle']);
                         $contents = stream_get_contents($job['bodyHandle']);
                     }
-                    $response = new Response(array('url' => $progress['url']), $statusCode, $headers, $contents);
+                    $response = new CurlResponse(array('url' => $progress['url']), $statusCode, $headers, $contents, $progress);
                     $this->io->writeError('['.$statusCode.'] '.Url::sanitize($progress['url']), true, IOInterface::DEBUG);
                 } else {
                     rewind($job['bodyHandle']);
                     $contents = stream_get_contents($job['bodyHandle']);
-                    $response = new Response(array('url' => $progress['url']), $statusCode, $headers, $contents);
+                    $response = new CurlResponse(array('url' => $progress['url']), $statusCode, $headers, $contents, $progress);
                     $this->io->writeError('['.$statusCode.'] '.Url::sanitize($progress['url']), true, IOInterface::DEBUG);
                 }
                 fclose($job['bodyHandle']);
@@ -374,6 +374,9 @@ class CurlDownloader
                 if ($e instanceof TransportException && $response) {
                     $e->setResponse($response->getBody());
                 }
+                if ($e instanceof TransportException && $progress) {
+                    $e->setResponseInfo($progress);
+                }
 
                 if (is_resource($job['headerHandle'])) {
                     fclose($job['headerHandle']);
@@ -511,7 +514,12 @@ class CurlDownloader
             @unlink($job['filename'].'~');
         }
 
-        return new TransportException('The "'.$job['url'].'" file could not be downloaded ('.$errorMessage.')', $response->getStatusCode());
+        $details = '';
+        if ($response->getHeader('content-type') === 'application/json') {
+            $details = ':'.PHP_EOL.substr($response->getBody(), 0, 200).(strlen($response->getBody()) > 200 ? '...' : '');
+        }
+
+        return new TransportException('The "'.$job['url'].'" file could not be downloaded ('.$errorMessage.')' . $details, $response->getStatusCode());
     }
 
     private function checkCurlResult($code)

src/Composer/Util/Http/CurlResponse.php

@@ -0,0 +1,32 @@
+<?php
+
+/*
+ * This file is part of Composer.
+ *
+ * (c) Nils Adermann <naderman@naderman.de>
+ *     Jordi Boggiano <j.boggiano@seld.be>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Composer\Util\Http;
+
+class CurlResponse extends Response
+{
+    private $curlInfo;
+
+    public function __construct(array $request, $code, array $headers, $body, array $curlInfo)
+    {
+        parent::__construct($request, $code, $headers, $body);
+        $this->curlInfo = $curlInfo;
+    }
+
+    /**
+     * @return array
+     */
+    public function getCurlInfo()
+    {
+        return $this->curlInfo;
+    }
+}

src/Composer/Util/Http/ProxyManager.php

@@ -87,7 +87,7 @@ class ProxyManager
         $options = array();
         $formattedProxyUrl = '';
 
-        if ($this->hasProxy && $this->fullProxy[$scheme]) {
+        if ($this->hasProxy && in_array($scheme, array('http', 'https'), true) && $this->fullProxy[$scheme]) {
             if ($this->noProxy($requestUrl)) {
                 $formattedProxyUrl = 'excluded by no_proxy';
             } else {

src/Composer/Util/HttpDownloader.php

@@ -19,6 +19,7 @@ use Composer\Util\Http\Response;
 use Composer\Composer;
 use Composer\Package\Version\VersionParser;
 use Composer\Semver\Constraint\Constraint;
+use Composer\Exception\IrrecoverableDownloadException;
 use React\Promise\Promise;
 
 /**
@@ -37,7 +38,7 @@ class HttpDownloader
     private $jobs = array();
     private $options = array();
     private $runningJobs = 0;
-    private $maxJobs = 10;
+    private $maxJobs = 12;
     private $curl;
     private $rfs;
     private $idGen = 0;
@@ -71,6 +72,10 @@ class HttpDownloader
         }
 
         $this->rfs = new RemoteFilesystem($io, $config, $options, $disableTls);
+
+        if (is_numeric($maxJobs = getenv('COMPOSER_MAX_PARALLEL_HTTP'))) {
+            $this->maxJobs = max(1, min(50, (int) $maxJobs));
+        }
     }
 
     /**
@@ -253,10 +258,11 @@ class HttpDownloader
             if (isset($job['curl_id'])) {
                 $curl->abortRequest($job['curl_id']);
             }
+            throw new IrrecoverableDownloadException('Download of ' . Url::sanitize($job['request']['url']) . ' canceled');
         };
 
         $promise = new Promise($resolver, $canceler);
-        $promise->then(function ($response) use (&$job, $downloader) {
+        $promise = $promise->then(function ($response) use (&$job, $downloader) {
             $job['status'] = HttpDownloader::STATUS_COMPLETED;
             $job['response'] = $response;
 
@@ -302,7 +308,7 @@ class HttpDownloader
             if (isset($job['request']['options']['http']['header']) && false !== stripos(implode('', $job['request']['options']['http']['header']), 'if-modified-since')) {
                 $resolve(new Response(array('url' => $url), 304, array(), ''));
             } else {
-                $e = new TransportException('Network disabled, request canceled: '.$url, 499);
+                $e = new TransportException('Network disabled, request canceled: '.Url::sanitize($url), 499);
                 $e->setStatusCode(499);
                 $reject($e);
             }
@@ -336,13 +342,9 @@ class HttpDownloader
      */
     public function wait($index = null)
     {
-        while (true) {
+        do {
-            if (!$this->countActiveJobs($index)) {
+            $jobCount = $this->countActiveJobs($index);
-                return;
+        } while ($jobCount);
-            }
-
-            usleep(1000);
-        }
     }
 
     /**
@@ -429,7 +431,7 @@ class HttpDownloader
                 }
             }
 
-            $io->writeError('<'.$type.'>'.ucfirst($type).' from '.$url.': '.$data[$type].'</'.$type.'>');
+            $io->writeError('<'.$type.'>'.ucfirst($type).' from '.Url::sanitize($url).': '.$data[$type].'</'.$type.'>');
         }
     }
 

src/Composer/Util/Loop.php

@@ -85,6 +85,7 @@ class Loop
             $progress->start($totalJobs);
         }
 
+        $lastUpdate = 0;
         while (true) {
             $activeJobs = 0;
 
@@ -95,15 +96,19 @@ class Loop
                 $activeJobs += $this->processExecutor->countActiveJobs();
             }
 
-            if ($progress) {
+            if ($progress && microtime(true) - $lastUpdate > 0.1) {
+                $lastUpdate = microtime(true);
                 $progress->setProgress($progress->getMaxSteps() - $activeJobs);
             }
 
             if (!$activeJobs) {
                 break;
             }
+        }
 
-            usleep(5000);
+        // as we skip progress updates if they are too quick, make sure we do one last one here at 100%
+        if ($progress) {
+            $progress->setProgress($progress->getMaxSteps());
         }
 
         unset($this->currentPromises[$waitIndex]);

src/Composer/Util/ProcessExecutor.php

@@ -98,11 +98,15 @@ class ProcessExecutor
             $this->io->writeError('Executing command ('.($cwd ?: 'CWD').'): '.$safeCommand);
         }
 
+        // TODO in 2.2, these two checks can be dropped as Symfony 4+ supports them out of the box
         // make sure that null translate to the proper directory in case the dir is a symlink
         // and we call a git command, because msysgit does not handle symlinks properly
         if (null === $cwd && Platform::isWindows() && false !== strpos($command, 'git') && getcwd()) {
             $cwd = realpath(getcwd());
         }
+        if (null !== $cwd && !is_dir($cwd)) {
+            throw new \RuntimeException('The given CWD for the process does not exist: '.$cwd);
+        }
 
         $this->captureOutput = func_num_args() > 3;
         $this->errorOutput = null;
@@ -177,6 +181,8 @@ class ProcessExecutor
                 // signal can throw in various conditions, but we don't care if it fails
             }
             $job['process']->stop(1);
+
+            throw new \RuntimeException('Aborted process');
         };
 
         $promise = new Promise($resolver, $canceler);
@@ -233,11 +239,15 @@ class ProcessExecutor
             $this->io->writeError('Executing async command ('.($cwd ?: 'CWD').'): '.$safeCommand);
         }
 
+        // TODO in 2.2, these two checks can be dropped as Symfony 4+ supports them out of the box
         // make sure that null translate to the proper directory in case the dir is a symlink
         // and we call a git command, because msysgit does not handle symlinks properly
         if (null === $cwd && Platform::isWindows() && false !== strpos($command, 'git') && getcwd()) {
             $cwd = realpath(getcwd());
         }
+        if (null !== $cwd && !is_dir($cwd)) {
+            throw new \RuntimeException('The given CWD for the process does not exist: '.$cwd);
+        }
 
         // TODO in v3, commands should be passed in as arrays of cmd + args
         if (method_exists('Symfony\Component\Process\Process', 'fromShellCommandline')) {

tests/Composer/Test/AllFunctionalTest.php

@@ -85,7 +85,7 @@ class AllFunctionalTest extends TestCase
             }
         }
 
-        $proc = new Process('php '.escapeshellarg('./bin/compile'), $target);
+        $proc = new Process('php -dphar.readonly=0 '.escapeshellarg('./bin/compile'), $target);
         $exitcode = $proc->run();
 
         if ($exitcode !== 0 || trim($proc->getOutput())) {
@@ -102,26 +102,73 @@ class AllFunctionalTest extends TestCase
     public function testIntegration($testFile)
     {
         $testData = $this->parseTestFile($testFile);
+        $this->testDir = self::getUniqueTmpDirectory();
+
+        // if a dir is present with the name of the .test file (without .test), we
+        // copy all its contents in the $testDir to be used to run the test with
+        $testFileSetupDir = substr($testFile, 0, -5);
+        if (is_dir($testFileSetupDir)) {
+            $fs = new Filesystem();
+            $fs->copy($testFileSetupDir, $this->testDir);
+        }
 
         $this->oldenv = getenv('COMPOSER_HOME');
         $_SERVER['COMPOSER_HOME'] = $this->testDir.'home';
         putenv('COMPOSER_HOME='.$_SERVER['COMPOSER_HOME']);
 
         $cmd = 'php '.escapeshellarg(self::$pharPath).' --no-ansi '.$testData['RUN'];
-        $proc = new Process($cmd, __DIR__.'/Fixtures/functional', null, null, 300);
+        $proc = new Process($cmd, $this->testDir, null, null, 300);
-        $exitcode = $proc->run();
+        $output = '';
+
+        $exitcode = $proc->run(function ($type, $buffer) use (&$output) {
+            $output .= $buffer;
+        });
 
         if (isset($testData['EXPECT'])) {
-            $this->assertEquals($testData['EXPECT'], $this->cleanOutput($proc->getOutput()), 'Error Output: '.$proc->getErrorOutput());
+            $output = trim($this->cleanOutput($output));
+            $expected = $testData['EXPECT'];
+
+            $line = 1;
+            for ($i = 0, $j = 0; $i < strlen($expected); ) {
+                if ($expected[$i] === "\n") {
+                    $line++;
+                }
+                if ($expected[$i] === '%') {
+                    preg_match('{%(.+?)%}', substr($expected, $i), $match);
+                    $regex = $match[1];
+
+                    if (preg_match('{'.$regex.'}', substr($output, $j), $match)) {
+                        $i += strlen($regex) + 2;
+                        $j += strlen($match[0]);
+                        continue;
+                    } else {
+                        $this->fail(
+                            'Failed to match pattern '.$regex.' at line '.$line.' / abs offset '.$i.': '
+                            .substr($output, $j, min(strpos($output, "\n", $j)-$j, 100)).PHP_EOL.PHP_EOL.
+                            'Output:'.PHP_EOL.$output
+                        );
+                    }
+                }
+                if ($expected[$i] !== $output[$j]) {
+                    $this->fail(
+                        'Output does not match expectation at line '.$line.' / abs offset '.$i.': '.PHP_EOL
+                        .'-'.substr($expected, $i, min(strpos($expected, "\n", $i)-$i, 100)).PHP_EOL
+                        .'+'.substr($output, $j, min(strpos($output, "\n", $j)-$j, 100)).PHP_EOL.PHP_EOL
+                        .'Output:'.PHP_EOL.$output
+                    );
+                }
+                $i++;
+                $j++;
+            }
         }
         if (isset($testData['EXPECT-REGEX'])) {
-            $this->assertRegExp($testData['EXPECT-REGEX'], $this->cleanOutput($proc->getOutput()), 'Error Output: '.$proc->getErrorOutput());
+            $this->assertRegExp($testData['EXPECT-REGEX'], $this->cleanOutput($output));
         }
-        if (isset($testData['EXPECT-ERROR'])) {
+        if (isset($testData['EXPECT-REGEXES'])) {
-            $this->assertEquals($testData['EXPECT-ERROR'], $this->cleanOutput($proc->getErrorOutput()));
+            $cleanOutput = $this->cleanOutput($output);
-        }
+            foreach (explode("\n", $testData['EXPECT-REGEXES']) as $regex) {
-        if (isset($testData['EXPECT-ERROR-REGEX'])) {
+                $this->assertRegExp($regex, $cleanOutput, 'Output: '.$output);
-            $this->assertRegExp($testData['EXPECT-ERROR-REGEX'], $this->cleanOutput($proc->getErrorOutput()));
+            }
         }
         if (isset($testData['EXPECT-EXIT-CODE'])) {
             $this->assertSame($testData['EXPECT-EXIT-CODE'], $exitcode);
@@ -132,7 +179,7 @@ class AllFunctionalTest extends TestCase
     {
         $tests = array();
         foreach (Finder::create()->in(__DIR__.'/Fixtures/functional')->name('*.test')->files() as $file) {
-            $tests[] = array($file->getRealPath());
+            $tests[basename($file)] = array($file->getRealPath());
         }
 
         return $tests;
@@ -144,23 +191,6 @@ class AllFunctionalTest extends TestCase
         $data = array();
         $section = null;
 
-        $testDir = self::getUniqueTmpDirectory();
-        $this->testDir = $testDir;
-        $varRegex = '#%([a-zA-Z_-]+)%#';
-        $variableReplacer = function ($match) use (&$data, $testDir) {
-            list(, $var) = $match;
-
-            switch ($var) {
-                case 'testDir':
-                    $data['test_dir'] = $testDir;
-
-                    return $testDir;
-
-                default:
-                    throw new \InvalidArgumentException(sprintf('Unknown variable "%s". Supported variables: "testDir"', $var));
-            }
-        };
-
         foreach ($tokens as $token) {
             if ('' === $token && null === $section) {
                 continue;
@@ -176,24 +206,20 @@ class AllFunctionalTest extends TestCase
 
             // Allow sections to validate, or modify their section data.
             switch ($section) {
-                case 'RUN':
-                    $sectionData = preg_replace_callback($varRegex, $variableReplacer, $sectionData);
-                    break;
-
                 case 'EXPECT-EXIT-CODE':
                     $sectionData = (int) $sectionData;
                     break;
 
+                case 'RUN':
                 case 'EXPECT':
                 case 'EXPECT-REGEX':
-                case 'EXPECT-ERROR':
+                case 'EXPECT-REGEXES':
-                case 'EXPECT-ERROR-REGEX':
+                    $sectionData = trim($sectionData);
-                    $sectionData = preg_replace_callback($varRegex, $variableReplacer, $sectionData);
                     break;
 
                 default:
                     throw new \RuntimeException(sprintf(
-                        'Unknown section "%s". Allowed sections: "RUN", "EXPECT", "EXPECT-ERROR", "EXPECT-EXIT-CODE", "EXPECT-REGEX", "EXPECT-ERROR-REGEX". '
+                        'Unknown section "%s". Allowed sections: "RUN", "EXPECT", "EXPECT-EXIT-CODE", "EXPECT-REGEX", "EXPECT-REGEXES". '
                        .'Section headers must be written as "--HEADER_NAME--".',
                         $section
                     ));
@@ -207,8 +233,8 @@ class AllFunctionalTest extends TestCase
         if (!isset($data['RUN'])) {
             throw new \RuntimeException('The test file must have a section named "RUN".');
         }
-        if (!isset($data['EXPECT']) && !isset($data['EXPECT-ERROR']) && !isset($data['EXPECT-REGEX']) && !isset($data['EXPECT-ERROR-REGEX'])) {
+        if (!isset($data['EXPECT']) && !isset($data['EXPECT-REGEX']) && !isset($data['EXPECT-REGEXES'])) {
-            throw new \RuntimeException('The test file must have a section named "EXPECT", "EXPECT-ERROR", "EXPECT-REGEX", or "EXPECT-ERROR-REGEX".');
+            throw new \RuntimeException('The test file must have a section named "EXPECT", "EXPECT-REGEX", or "EXPECT-REGEXES".');
         }
 
         return $data;

tests/Composer/Test/ApplicationTest.php

@@ -61,7 +61,7 @@ class ApplicationTest extends TestCase
 
             $outputMock->expects($this->at($index++))
                 ->method("write")
-                ->with($this->equalTo('<warning>You are running composer with Xdebug enabled. This has a major impact on runtime performance. See https://getcomposer.org/xdebug</warning>'));
+                ->with($this->equalTo('<warning>Composer is operating slower than normal because you have Xdebug enabled. See https://getcomposer.org/xdebug</warning>'));
         }
 
         $outputMock->expects($this->at($index++))
@@ -70,7 +70,7 @@ class ApplicationTest extends TestCase
 
         $outputMock->expects($this->at($index++))
             ->method("write")
-            ->with($this->equalTo(sprintf('<warning>Warning: This development build of composer is over 60 days old. It is recommended to update it by running "%s self-update" to get the latest version.</warning>', $_SERVER['PHP_SELF'])));
+            ->with($this->equalTo(sprintf('<warning>Warning: This development build of Composer is over 60 days old. It is recommended to update it by running "%s self-update" to get the latest version.</warning>', $_SERVER['PHP_SELF'])));
 
         if (!defined('COMPOSER_DEV_WARNING_TIME')) {
             define('COMPOSER_DEV_WARNING_TIME', time() - 1);

tests/Composer/Test/Autoload/AutoloadGeneratorTest.php

@@ -1447,9 +1447,9 @@ EOF;
         $package->setAutoload(array(
             'psr-0' => array('Foo' => '../path/../src'),
             'psr-4' => array('Acme\Foo\\' => '../path/../src-psr4'),
-            'classmap' => array('../classmap'),
+            'classmap' => array('../classmap', '../classmap2/subdir', 'classmap3', 'classmap4'),
             'files' => array('../test.php'),
-            'exclude-from-classmap' => array('./../classmap/excluded'),
+            'exclude-from-classmap' => array('./../classmap/excluded', '../classmap2', 'classmap3/classes.php', 'classmap4/*/classes.php'),
         ));
 
         $this->repository->expects($this->once())
@@ -1458,9 +1458,15 @@ EOF;
 
         $this->fs->ensureDirectoryExists($this->workingDir.'/src/Foo');
         $this->fs->ensureDirectoryExists($this->workingDir.'/classmap/excluded');
+        $this->fs->ensureDirectoryExists($this->workingDir.'/classmap2/subdir');
+        $this->fs->ensureDirectoryExists($this->workingDir.'/working-dir/classmap3');
+        $this->fs->ensureDirectoryExists($this->workingDir.'/working-dir/classmap4/foo/');
         file_put_contents($this->workingDir.'/src/Foo/Bar.php', '<?php namespace Foo; class Bar {}');
         file_put_contents($this->workingDir.'/classmap/classes.php', '<?php namespace Foo; class Foo {}');
         file_put_contents($this->workingDir.'/classmap/excluded/classes.php', '<?php namespace Foo; class Boo {}');
+        file_put_contents($this->workingDir.'/classmap2/subdir/classes.php', '<?php namespace Foo; class Boo2 {}');
+        file_put_contents($this->workingDir.'/working-dir/classmap3/classes.php', '<?php namespace Foo; class Boo3 {}');
+        file_put_contents($this->workingDir.'/working-dir/classmap4/foo/classes.php', '<?php namespace Foo; class Boo4 {}');
         file_put_contents($this->workingDir.'/test.php', '<?php class Foo {}');
 
         $this->generator->dump($this->config, $this->repository, $package, $this->im, 'composer', true, '_14');

tests/Composer/Test/Autoload/Fixtures/autoload_real_files_by_dependency.php

@@ -23,7 +23,7 @@ class ComposerAutoloaderInitFilesAutoloadOrder
         }
 
         spl_autoload_register(array('ComposerAutoloaderInitFilesAutoloadOrder', 'loadClassLoader'), true, true);
-        self::$loader = $loader = new \Composer\Autoload\ClassLoader();
+        self::$loader = $loader = new \Composer\Autoload\ClassLoader(\dirname(\dirname(__FILE__)));
         spl_autoload_unregister(array('ComposerAutoloaderInitFilesAutoloadOrder', 'loadClassLoader'));
 
         $useStaticLoader = PHP_VERSION_ID >= 50600 && !defined('HHVM_VERSION') && (!function_exists('zend_loader_file_encoded') || !zend_loader_file_encoded());

tests/Composer/Test/Autoload/Fixtures/autoload_real_functions.php

@@ -23,7 +23,7 @@ class ComposerAutoloaderInitFilesAutoload
         }
 
         spl_autoload_register(array('ComposerAutoloaderInitFilesAutoload', 'loadClassLoader'), true, true);
-        self::$loader = $loader = new \Composer\Autoload\ClassLoader();
+        self::$loader = $loader = new \Composer\Autoload\ClassLoader(\dirname(\dirname(__FILE__)));
         spl_autoload_unregister(array('ComposerAutoloaderInitFilesAutoload', 'loadClassLoader'));
 
         $useStaticLoader = PHP_VERSION_ID >= 50600 && !defined('HHVM_VERSION') && (!function_exists('zend_loader_file_encoded') || !zend_loader_file_encoded());

tests/Composer/Test/Autoload/Fixtures/autoload_real_functions_with_include_paths.php

@@ -23,7 +23,7 @@ class ComposerAutoloaderInitFilesAutoload
         }
 
         spl_autoload_register(array('ComposerAutoloaderInitFilesAutoload', 'loadClassLoader'), true, true);
-        self::$loader = $loader = new \Composer\Autoload\ClassLoader();
+        self::$loader = $loader = new \Composer\Autoload\ClassLoader(\dirname(\dirname(__FILE__)));
         spl_autoload_unregister(array('ComposerAutoloaderInitFilesAutoload', 'loadClassLoader'));
 
         $includePaths = require __DIR__ . '/include_paths.php';

tests/Composer/Test/Autoload/Fixtures/autoload_real_functions_with_removed_include_paths_and_autolad_files.php

@@ -23,7 +23,7 @@ class ComposerAutoloaderInitFilesAutoload
         }
 
         spl_autoload_register(array('ComposerAutoloaderInitFilesAutoload', 'loadClassLoader'), true, true);
-        self::$loader = $loader = new \Composer\Autoload\ClassLoader();
+        self::$loader = $loader = new \Composer\Autoload\ClassLoader(\dirname(\dirname(__FILE__)));
         spl_autoload_unregister(array('ComposerAutoloaderInitFilesAutoload', 'loadClassLoader'));
 
         $useStaticLoader = PHP_VERSION_ID >= 50600 && !defined('HHVM_VERSION') && (!function_exists('zend_loader_file_encoded') || !zend_loader_file_encoded());

tests/Composer/Test/Autoload/Fixtures/autoload_real_include_path.php

@@ -23,7 +23,7 @@ class ComposerAutoloaderInitIncludePath
         }
 
         spl_autoload_register(array('ComposerAutoloaderInitIncludePath', 'loadClassLoader'), true, true);
-        self::$loader = $loader = new \Composer\Autoload\ClassLoader();
+        self::$loader = $loader = new \Composer\Autoload\ClassLoader(\dirname(\dirname(__FILE__)));
         spl_autoload_unregister(array('ComposerAutoloaderInitIncludePath', 'loadClassLoader'));
 
         $useStaticLoader = PHP_VERSION_ID >= 50600 && !defined('HHVM_VERSION') && (!function_exists('zend_loader_file_encoded') || !zend_loader_file_encoded());

tests/Composer/Test/Autoload/Fixtures/autoload_real_target_dir.php

@@ -23,7 +23,7 @@ class ComposerAutoloaderInitTargetDir
         }
 
         spl_autoload_register(array('ComposerAutoloaderInitTargetDir', 'loadClassLoader'), true, true);
-        self::$loader = $loader = new \Composer\Autoload\ClassLoader();
+        self::$loader = $loader = new \Composer\Autoload\ClassLoader(\dirname(\dirname(__FILE__)));
         spl_autoload_unregister(array('ComposerAutoloaderInitTargetDir', 'loadClassLoader'));
 
         $useStaticLoader = PHP_VERSION_ID >= 50600 && !defined('HHVM_VERSION') && (!function_exists('zend_loader_file_encoded') || !zend_loader_file_encoded());

tests/Composer/Test/ConfigTest.php

@@ -35,7 +35,7 @@ class ConfigTest extends TestCase
         $data = array();
         $data['local config inherits system defaults'] = array(
             array(
-                'packagist.org' => array('type' => 'composer', 'url' => 'https?://repo.packagist.org', 'allow_ssl_downgrade' => true),
+                'packagist.org' => array('type' => 'composer', 'url' => 'https://repo.packagist.org'),
             ),
             array(),
         );
@@ -58,7 +58,7 @@ class ConfigTest extends TestCase
             array(
                 1 => array('type' => 'vcs', 'url' => 'git://github.com/composer/composer.git'),
                 0 => array('type' => 'pear', 'url' => 'http://pear.composer.org'),
-                'packagist.org' => array('type' => 'composer', 'url' => 'https?://repo.packagist.org', 'allow_ssl_downgrade' => true),
+                'packagist.org' => array('type' => 'composer', 'url' => 'https://repo.packagist.org'),
             ),
             array(
                 array('type' => 'vcs', 'url' => 'git://github.com/composer/composer.git'),
@@ -69,7 +69,7 @@ class ConfigTest extends TestCase
         $data['system config adds above core defaults'] = array(
             array(
                 'example.com' => array('type' => 'composer', 'url' => 'http://example.com'),
-                'packagist.org' => array('type' => 'composer', 'url' => 'https?://repo.packagist.org', 'allow_ssl_downgrade' => true),
+                'packagist.org' => array('type' => 'composer', 'url' => 'https://repo.packagist.org'),
             ),
             array(),
             array(
@@ -104,9 +104,27 @@ class ConfigTest extends TestCase
             ),
         );
 
+        $data['local config redefining packagist.org by URL override it if no named keys are used'] = array(
+            array(
+                array('type' => 'composer', 'url' => 'https://repo.packagist.org'),
+            ),
+            array(
+                array('type' => 'composer', 'url' => 'https://repo.packagist.org'),
+            ),
+        );
+
+        $data['local config redefining packagist.org by URL override it also with named keys'] = array(
+            array(
+                'example' => array('type' => 'composer', 'url' => 'https://repo.packagist.org'),
+            ),
+            array(
+                'example' => array('type' => 'composer', 'url' => 'https://repo.packagist.org'),
+            ),
+        );
+
         $data['incorrect local config does not cause ErrorException'] = array(
             array(
-                'packagist.org' => array('type' => 'composer', 'url' => 'https?://repo.packagist.org', 'allow_ssl_downgrade' => true),
+                'packagist.org' => array('type' => 'composer', 'url' => 'https://repo.packagist.org'),
                 'type' => 'vcs',
                 'url' => 'http://example.com',
             ),

tests/Composer/Test/Downloader/GitDownloaderTest.php

@@ -122,12 +122,7 @@ class GitDownloaderTest extends TestCase
 
         $processExecutor->expects($this->at(2))
             ->method('execute')
-            ->with($this->equalTo($this->winCompat("git checkout 'master' --")), $this->equalTo(null), $this->equalTo($this->winCompat('composerPath')))
+            ->with($this->equalTo($this->winCompat("(git checkout 'master' -- || git checkout -B 'master' 'composer/master' --) && git reset --hard '1234567890123456789012345678901234567890' --")), $this->equalTo(null), $this->equalTo($this->winCompat('composerPath')))
-            ->will($this->returnValue(0));
-
-        $processExecutor->expects($this->at(3))
-            ->method('execute')
-            ->with($this->equalTo($this->winCompat("git reset --hard '1234567890123456789012345678901234567890' --")), $this->equalTo(null), $this->equalTo($this->winCompat('composerPath')))
             ->will($this->returnValue(0));
 
         $downloader = $this->getDownloaderMock(null, null, $processExecutor);
@@ -198,12 +193,7 @@ class GitDownloaderTest extends TestCase
 
         $processExecutor->expects($this->at(5))
             ->method('execute')
-            ->with($this->equalTo($this->winCompat("git checkout 'master' --")), $this->equalTo(null), $this->equalTo($this->winCompat('composerPath')))
+            ->with($this->equalTo($this->winCompat("(git checkout 'master' -- || git checkout -B 'master' 'composer/master' --) && git reset --hard '1234567890123456789012345678901234567890' --")), $this->equalTo(null), $this->equalTo($this->winCompat('composerPath')))
-            ->will($this->returnValue(0));
-
-        $processExecutor->expects($this->at(6))
-            ->method('execute')
-            ->with($this->equalTo($this->winCompat("git reset --hard '1234567890123456789012345678901234567890' --")), $this->equalTo(null), $this->equalTo($this->winCompat('composerPath')))
             ->will($this->returnValue(0));
 
         $downloader = $this->getDownloaderMock(null, $config, $processExecutor);

tests/Composer/Test/Fixtures/functional/create-project-command.test

@@ -1,4 +1,4 @@
 --RUN--
-create-project seld/jsonlint %testDir% 1.0.0 --prefer-source -n
+create-project seld/jsonlint foo 1.0.0 --prefer-source -n
---EXPECT-ERROR-REGEX--
+--EXPECT-REGEX--
-{Installing seld/jsonlint \(1.0.0\): Cloning [a-f0-9]{10}( from cache)?}
+{- Installing seld/jsonlint \(1.0.0\): Cloning [a-f0-9]{10}( from cache)?}

tests/Composer/Test/Fixtures/functional/create-project-shows-full-hash-for-dev-packages.test

@@ -1,4 +1,4 @@
 --RUN--
-create-project --repository=packages.json -v seld/jsonlint %testDir% dev-master
+create-project --repository=packages.json -v seld/jsonlint foo dev-main
---EXPECT-ERROR-REGEX--
+--EXPECT-REGEX--
-{^Installing seld/jsonlint \(dev-master [a-f0-9]{40}\)}m
+{^Installing seld/jsonlint \(dev-main [a-f0-9]{40}\)}m

tests/Composer/Test/Fixtures/functional/create-project-shows-full-hash-for-dev-packages/packages.json

@@ -9,8 +9,9 @@
             "validator"
         ],
         "homepage": "",
-        "version": "dev-master",
+        "version": "dev-main",
-        "version_normalized": "9999999-dev",
+        "version_normalized": "dev-main",
+        "default-branch": true,
         "license": [
             "MIT"
         ],
@@ -41,4 +42,4 @@
             "php": ">=5.3.0"
         }
     }
-]
+]

tests/Composer/Test/Fixtures/installer/conflict-with-all-dependencies-option-dont-recommend-to-use-it.test

@@ -0,0 +1,50 @@
+--TEST--
+Verify that a conflict with all dependencies option enabled don't recommend to use the option
+--COMPOSER--
+{
+    "repositories": [
+        {
+            "type": "package",
+            "package": [
+                { "name": "locked/pkg", "version": "dev-master", "require": {"locked/dependency": "1.0.0"}, "default-branch": true }
+            ]
+        }
+    ],
+    "require": {
+        "locked/pkg": "*@dev"
+    }
+}
+
+--LOCK--
+{
+    "packages": [
+        { "name": "locked/pkg", "version": "dev-master", "require": {"locked/dependency": "1.0.0"}, "default-branch": true },
+        { "name": "locked/dependency", "version": "1.0.0" }
+    ],
+    "packages-dev": [],
+    "aliases": [],
+    "minimum-stability": "dev",
+    "stability-flags": [],
+    "prefer-stable": false,
+    "prefer-lowest": false,
+    "platform": [],
+    "platform-dev": []
+}
+
+--RUN--
+update locked/dependency --with-all-dependencies
+
+--EXPECT-EXIT-CODE--
+2
+
+--EXPECT-OUTPUT--
+Loading composer repositories with package information
+Updating dependencies
+Your requirements could not be resolved to an installable set of packages.
+
+  Problem 1
+    - locked/pkg dev-master requires locked/dependency 1.0.0 -> found locked/dependency[1.0.0] in lock file but not in remote repositories, make sure you avoid updating this package to keep the one from lock file.
+    - locked/pkg is locked to version dev-master and an update of this package was not requested.
+
+--EXPECT--
+

tests/Composer/Test/InstalledVersionsTest.php

@@ -17,6 +17,20 @@ use Composer\Semver\VersionParser;
 
 class InstalledVersionsTest extends TestCase
 {
+    public static function setUpBeforeClass()
+    {
+        // disable multiple-ClassLoader-based checks of InstalledVersions by making it seem like no
+        // class loaders are registered
+        $prop = new \ReflectionProperty('Composer\Autoload\ClassLoader', 'registeredLoaders');
+        $prop->setAccessible(true);
+        $prop->setValue(array());
+    }
+
+    public static function tearDownAfterClass()
+    {
+        self::setUpBeforeClass();
+    }
+
     public function setUp()
     {
         InstalledVersions::reload(require __DIR__.'/Repository/Fixtures/installed.php');

tests/Composer/Test/Package/Archiver/ZipArchiverTest.php

@@ -18,20 +18,44 @@ use Composer\Package\Archiver\ZipArchiver;
 
 class ZipArchiverTest extends ArchiverTest
 {
-    public function testZipArchive()
+    /**
+     * @param string $include
+     *
+     * @dataProvider provideGitignoreExcludeNegationTestCases
+     */
+    public function testGitignoreExcludeNegation($include)
+    {
+        $this->testZipArchive(array(
+            'docs/README.md' => '# The doc',
+            '.gitignore' => "/*\n.*\n!.git*\n$include",
+        ));
+    }
+
+    public function provideGitignoreExcludeNegationTestCases()
+    {
+        return array(
+            array('!/docs'),
+            array('!/docs/'),
+        );
+    }
+
+    public function testZipArchive(array $files = array())
     {
         if (!class_exists('ZipArchive')) {
             $this->markTestSkipped('Cannot run ZipArchiverTest, missing class "ZipArchive".');
         }
 
-        $files = array(
+        if (empty($files)) {
-            'file.txt',
+            $files = array(
-            'foo/bar/baz',
+                'file.txt' => NULL,
-            'x/baz',
+                'foo/bar/baz' => NULL,
-            'x/includeme',
+                'x/baz' => NULL,
-        );
+                'x/includeme' => NULL,
-        if (!Platform::isWindows()) {
+            );
-            $files[] = 'foo' . getcwd() . '/file.txt';
+
+            if (!Platform::isWindows()) {
+                $files['foo' . getcwd() . '/file.txt'] = NULL;
+            }
         }
         // Set up repository
         $this->setupDummyRepo($files);
@@ -41,12 +65,12 @@ class ZipArchiverTest extends ArchiverTest
         // Test archive
         $archiver = new ZipArchiver();
         $archiver->archive($package->getSourceUrl(), $target, 'zip');
-        $this->assertFileExists($target);
+        static::assertFileExists($target);
         $zip = new ZipArchive();
         $res = $zip->open($target);
-        self::assertTrue($res, 'Failed asserting that Zip file can be opened');
+        static::assertTrue($res, 'Failed asserting that Zip file can be opened');
-        foreach ($files as $file) {
+        foreach ($files as $path => $content) {
-            $this->assertSame('content', $zip->getFromName($file), 'Failed asserting that Zip contains ' . $file);
+            static::assertSame($content, $zip->getFromName($path), 'Failed asserting that Zip contains ' . $path);
         }
         $zip->close();
 
@@ -57,12 +81,15 @@ class ZipArchiverTest extends ArchiverTest
      * Create a local dummy repository to run tests against!
      * @param array $files
      */
-    protected function setupDummyRepo($files)
+    protected function setupDummyRepo(array &$files)
     {
         $currentWorkDir = getcwd();
         chdir($this->testDir);
-        foreach ($files as $file) {
+        foreach ($files as $path => $content) {
-            $this->writeFile($file, 'content', $currentWorkDir);
+            if ($files[$path] === NULL) {
+                $files[$path] = 'content';
+            }
+            $this->writeFile($path, $files[$path], $currentWorkDir);
         }
 
         chdir($currentWorkDir);

tests/Composer/Test/Package/Loader/RootPackageLoaderTest.php

@@ -202,28 +202,4 @@ class RootPackageLoaderTest extends TestCase
 
         $this->assertEquals("dev-latest-production", $package->getPrettyVersion());
     }
-
-    /**
-     * @dataProvider provideExtraBranchVersion
-     */
-    public function testLoadExtraBranchVersion($branchVersion)
-    {
-        $package = $this->loadPackage(array(
-            'extra' => array(
-                'branch-version' => $branchVersion,
-            ),
-        ));
-
-        $this->assertEquals('1.2.x-dev', $package->getPrettyVersion());
-    }
-
-    public function provideExtraBranchVersion()
-    {
-        return array(
-            array('1.2'),
-            array('1.2.x'),
-            array('1.2-dev'),
-            array('1.2.x-dev'),
-        );
-    }
 }

tests/Composer/Test/Plugin/PluginInstallerTest.php

@@ -18,6 +18,7 @@ use Composer\Installer\PluginInstaller;
 use Composer\Package\CompletePackage;
 use Composer\Package\Loader\JsonLoader;
 use Composer\Package\Loader\ArrayLoader;
+use Composer\Package\RootPackage;
 use Composer\Plugin\PluginManager;
 use Composer\IO\BufferIO;
 use Composer\EventDispatcher\EventDispatcher;
@@ -111,6 +112,7 @@ class PluginInstallerTest extends TestCase
         $this->composer->setInstallationManager($im);
         $this->composer->setAutoloadGenerator($this->autoloadGenerator);
         $this->composer->setEventDispatcher(new EventDispatcher($this->composer, $this->io));
+        $this->composer->setPackage(new RootPackage('dummy/root', '1.0.0.0', '1.0.0'));
 
         $this->pm = new PluginManager($this->io, $this->composer);
         $this->composer->setPluginManager($this->pm);

tests/Composer/Test/Repository/ComposerRepositoryTest.php

@@ -55,7 +55,7 @@ class ComposerRepositoryTest extends TestCase
         $repository
             ->expects($this->at(2))
             ->method('createPackages')
-            ->with($this->identicalTo($expected), $this->equalTo('Composer\Package\CompletePackage'))
+            ->with($this->identicalTo($expected), $this->equalTo('root file (http://example.org/packages.json)'))
             ->will($this->returnValue($stubs));
 
         // Triggers initialization

tests/Composer/Test/Repository/Fixtures/path/with-branch-version/composer.json

@@ -1,6 +0,0 @@
-{
-  "name": "test/path-branch-versioned",
-  "extra": {
-    "branch-version": "1.2"
-  }
-}

tests/Composer/Test/Repository/PathRepositoryTest.php

@@ -67,23 +67,6 @@ class PathRepositoryTest extends TestCase
         $this->assertNotEmpty($packageVersion);
     }
 
-    public function testLoadPackageFromFileSystemWithExtraBranchVersion()
-    {
-        $ioInterface = $this->getMockBuilder('Composer\IO\IOInterface')
-            ->getMock();
-
-        $config = new \Composer\Config();
-        $versionGuesser = null;
-
-        $repositoryUrl = implode(DIRECTORY_SEPARATOR, array(__DIR__, 'Fixtures', 'path', 'with-branch-version'));
-        $repository = new PathRepository(array('url' => $repositoryUrl), $ioInterface, $config);
-        $packages = $repository->getPackages();
-
-        $this->assertEquals(1, $repository->count());
-
-        $this->assertTrue($repository->hasPackage($this->getPackage('test/path-branch-versioned', '1.2.x-dev')));
-    }
-
     public function testLoadPackageFromFileSystemWithWildcard()
     {
         $ioInterface = $this->getMockBuilder('Composer\IO\IOInterface')
@@ -95,16 +78,50 @@ class PathRepositoryTest extends TestCase
         $repositoryUrl = implode(DIRECTORY_SEPARATOR, array(__DIR__, 'Fixtures', 'path', '*'));
         $repository = new PathRepository(array('url' => $repositoryUrl), $ioInterface, $config);
         $packages = $repository->getPackages();
-        $result = array();
+        $names = array();
 
-        $this->assertGreaterThanOrEqual(3, $repository->count());
+        $this->assertEquals(2, $repository->count());
 
-        foreach ($packages as $package) {
+        $package = $packages[0];
-            $result[$package->getName()] = $package->getPrettyVersion();
+        $names[] = $package->getName();
-        }
 
-        ksort($result);
+        $package = $packages[1];
-        $this->assertSame(array('test/path-branch-versioned' => '1.2.x-dev', 'test/path-unversioned' => $result['test/path-unversioned'], 'test/path-versioned' => '0.0.2'), $result);
+        $names[] = $package->getName();
+
+        sort($names);
+        $this->assertEquals(array('test/path-unversioned', 'test/path-versioned'), $names);
+    }
+
+    public function testLoadPackageWithExplicitVersions()
+    {
+        $ioInterface = $this->getMockBuilder('Composer\IO\IOInterface')
+            ->getMock();
+
+        $config = new \Composer\Config();
+        $versionGuesser = null;
+
+        $options = array(
+            'versions' => array(
+                'test/path-unversioned' => '4.3.2.1',
+                'test/path-versioned' => '3.2.1.0',
+            ),
+        );
+        $repositoryUrl = implode(DIRECTORY_SEPARATOR, array(__DIR__, 'Fixtures', 'path', '*'));
+        $repository = new PathRepository(array('url' => $repositoryUrl, 'options' => $options), $ioInterface, $config);
+        $packages = $repository->getPackages();
+
+        $versions = array();
+
+        $this->assertEquals(2, $repository->count());
+
+        $package = $packages[0];
+        $versions[$package->getName()] = $package->getVersion();
+
+        $package = $packages[1];
+        $versions[$package->getName()] = $package->getVersion();
+
+        ksort($versions);
+        $this->assertSame(array('test/path-unversioned' => '4.3.2.1', 'test/path-versioned' => '3.2.1.0'), $versions);
     }
 
     /**