testing

DiffusionGitRawDiffQuery.php
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			<?php

			final class DiffusionGitRawDiffQuery extends DiffusionRawDiffQuery {

			protected function newQueryFuture() {
			$drequest = $this->getRequest();
			$repository = $drequest->getRepository();

			$commit = $this->getAnchorCommit();

			$options = array(
			'-M',
			'-C',
			'--no-ext-diff',
			'--no-color',
			'--src-prefix=a/',
			'--dst-prefix=b/',
			'-U'.(int)$this->getLinesOfContext(),
			);

			$against = $this->getAgainstCommit();
			if ($against === null) {
			// Check if this is the root commit by seeing if it has parents, since
			// `git diff X^ X` does not work if "X" is the initial commit.
			list($parents) = $repository->execxLocalCommand(
			'log --format=%s %s --',
			'%P',
			$commit);

			if (strlen(trim($parents))) {
			$against = $commit.'^';
			} else {
			$against = ArcanistGitAPI::GIT_MAGIC_ROOT_COMMIT;
			}
			}

			$path = $drequest->getPath();
			if (!strlen($path)) {
			$path = '.';
			}

			return $repository->getLocalCommandFuture(
			'diff %Ls %s %s -- %s',
			$options,
			$against,
			$commit,
			$path);
			}

			}