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DiffusionRepositoryDefaultController.php
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			<?php

			final class DiffusionRepositoryDefaultController extends DiffusionController {

			public function shouldAllowPublic() {
			// NOTE: We allow public access to this controller because it handles
			// redirecting paths that are missing a trailing "/". We need to manually
			// redirect these instead of relying on the automatic redirect because
			// some VCS requests may omit the slashes. See T12035, and below, for some
			// discussion.
			return true;
			}

			public function handleRequest(AphrontRequest $request) {
			$response = $this->loadDiffusionContext();
			if ($response) {
			return $response;
			}

			// NOTE: This controller is just here to make sure we call
			// willBeginExecution() on any /diffusion/X/ URI, so we can intercept
			// `git`, `hg` and `svn` HTTP protocol requests.

			// If we made it here, it's probably because the user copy-pasted a
			// clone URI with "/anything.git" at the end into their web browser.
			// Send them to the canonical repository URI.

			$drequest = $this->getDiffusionRequest();
			$repository = $drequest->getRepository();

			return id(new AphrontRedirectResponse())
			->setURI($repository->getURI());
			}
			}