src/Composer/Downloader/HgDownloader.php
public function doDownload(PackageInterface $package, $path, $url)
    {
        $hgUtils = new HgUtils($this->io, $this->config, $this->process);

        $cloneCommand = function ($url) use ($path) {
            return sprintf('hg clone %s %s', ProcessExecutor::escape($url), ProcessExecutor::escape($path));
        };

        $hgUtils->runCommand($cloneCommand, $url, $path);

        $ref = ProcessExecutor::escape($package->getSourceReference());
        $command = sprintf('hg up %s', $ref);
        if (0 !== $this->process->execute($command, $ignoredOutput, realpath($path))) {
            throw new \RuntimeException('Failed to execute ' . $command . "\n\n" . $this->process->getErrorOutput());
        }
    }
public function doDownload(PackageInterface $package, $path, $url)
    {
        $hgUtils = new HgUtils($this->io, $this->config, $this->process);

        $cloneCommand = function ($url) use ($path) {
            return sprintf('hg clone %s %s', ProcessExecutor::escape($url), ProcessExecutor::escape($path));
        };

        $hgUtils->runCommand($cloneCommand, $url, $path);

        $ref = ProcessExecutor::escape($package->getSourceReference());
        $command = sprintf('hg up %s', $ref);
        if (0 !== $this->process->execute($command, $ignoredOutput, realpath($path))) {
            throw new \RuntimeException('Failed to execute ' . $command . "\n\n" . $this->process->getErrorOutput());
        }
    }
{@inheritDoc}