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	diff --git a/scripts/arcanist.php b/scripts/arcanist.php
	index 99af52e8..83eebff2 100755
	--- a/scripts/arcanist.php
	+++ b/scripts/arcanist.php
	@@ -1,220 +1,227 @@
	#!/usr/bin/env php
	<?php

	/*
	* Copyright 2011 Facebook, Inc.
	*
	* Licensed under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/

	require_once dirname(__FILE__).'/__init_script__.php';

	phutil_require_module('phutil', 'conduit/client');
	phutil_require_module('phutil', 'console');
	phutil_require_module('phutil', 'future/exec');
	phutil_require_module('phutil', 'filesystem');
	phutil_require_module('phutil', 'symbols');

	phutil_require_module('arcanist', 'exception/usage');
	phutil_require_module('arcanist', 'configuration');
	phutil_require_module('arcanist', 'workingcopyidentity');
	phutil_require_module('arcanist', 'repository/api/base');

	$config_trace_mode = false;
	$args = array_slice($argv, 1);
	$load = array();
	$matches = null;
	foreach ($args as $key => $arg) {
	if ($arg == '--') {
	break;
	} else if ($arg == '--trace') {
	unset($args[$key]);
	$config_trace_mode = true;
	+ } else if ($arg == '--no-ansi') {
	+ unset($args[$key]);
	+ PhutilConsoleFormatter::disableANSI(true);
	} else if (preg_match('/^--load-phutil-library=(.*)$/', $arg, $matches)) {
	unset($args[$key]);
	$load['?'] = $matches[1];
	}
	}

	+if (!posix_isatty(STDOUT)) {
	+ PhutilConsoleFormatter::disableANSI(true);
	+}
	+
	$args = array_values($args);

	try {

	if ($config_trace_mode) {
	ExecFuture::pushEchoMode(true);
	}

	if (!$args) {
	throw new ArcanistUsageException("No command provided. Try 'arc help'.");
	}

	$working_copy = ArcanistWorkingCopyIdentity::newFromPath($_SERVER['PWD']);
	if ($load) {
	$libs = $load;
	} else {
	$libs = $working_copy->getConfig('phutil_libraries');
	}
	if ($libs) {
	foreach ($libs as $name => $location) {
	if ($config_trace_mode) {
	echo "Loading phutil library '{$name}' from '{$location}'...\n";
	}
	$library_root = Filesystem::resolvePath(
	$location,
	$working_copy->getProjectRoot());
	phutil_load_library($library_root);
	}
	}

	$user_config = array();
	$user_config_path = getenv('HOME').'/.arcrc';
	if (Filesystem::pathExists($user_config_path)) {
	$user_config_data = Filesystem::readFile($user_config_path);
	$user_config = json_decode($user_config_data, true);
	if (!is_array($user_config)) {
	throw new ArcanistUsageException(
	"Your '~/.arcrc' file is not a valid JSON file.");
	}
	}

	$config = $working_copy->getConfig('arcanist_configuration');
	if ($config) {
	PhutilSymbolLoader::loadClass($config);
	$config = new $config();
	} else {
	$config = new ArcanistConfiguration();
	}

	$command = strtolower($args[0]);
	$workflow = $config->buildWorkflow($command);
	if (!$workflow) {
	throw new ArcanistUsageException(
	"Unknown command '{$command}'. Try 'arc help'.");
	}
	$workflow->setArcanistConfiguration($config);
	$workflow->setCommand($command);
	$workflow->parseArguments(array_slice($args, 1));

	$need_working_copy = $workflow->requiresWorkingCopy();
	$need_conduit = $workflow->requiresConduit();
	$need_auth = $workflow->requiresAuthentication();
	$need_repository_api = $workflow->requiresRepositoryAPI();

	$need_conduit = $need_conduit \|\|
	$need_auth;
	$need_working_copy = $need_working_copy \|\|
	$need_conduit \|\|
	$need_repository_api;

	if ($need_working_copy) {
	if (!$working_copy->getProjectRoot()) {
	throw new ArcanistUsageException(
	"There is no '.arcconfig' file in this directory or any parent ".
	"directory. Create a '.arcconfig' file to configure this project ".
	"for use with Arcanist.");
	}
	$workflow->setWorkingCopy($working_copy);
	}

	$set_guid = false;
	if ($need_conduit) {
	$conduit_uri = $working_copy->getConduitURI();
	if (!$conduit_uri) {
	throw new ArcanistUsageException(
	"No Conduit URI is specified in the .arcconfig file for this project. ".
	"Specify the Conduit URI for the host Differential is running on.");
	}
	$conduit = new ConduitClient($conduit_uri);
	$conduit->setTraceMode($config_trace_mode);
	$workflow->setConduit($conduit);

	$hosts_config = idx($user_config, 'hosts', array());
	$host_config = idx($hosts_config, $conduit_uri, array());
	$user_name = idx($host_config, 'user', getenv('USER'));
	$certificate = idx($host_config, 'cert');

	$description = implode(' ', $argv);
	$connection = $conduit->callMethodSynchronous(
	'conduit.connect',
	array(
	'client' => 'arc',
	'clientVersion' => 2,
	'clientDescription' => php_uname('n').':'.$description,
	'user' => $user_name,
	'certificate' => $certificate,
	));

	$workflow->setUserName($user_name);
	$user_phid = idx($connection, 'userPHID');
	if ($user_phid) {
	$set_guid = true;
	$workflow->setUserGUID($user_phid);
	}
	}

	if ($need_repository_api) {
	$repository_api = ArcanistRepositoryAPI::newAPIFromWorkingCopyIdentity(
	$working_copy);
	$workflow->setRepositoryAPI($repository_api);
	}

	if ($need_auth && !$set_guid) {
	$user_name = getenv('USER');
	$user_find_future = $conduit->callMethod(
	'user.find',
	array(
	'aliases' => array(
	$user_name,
	),
	));
	$user_guids = $user_find_future->resolve();
	if (empty($user_guids[$user_name])) {
	throw new ArcanistUsageException(
	"Username '{$user_name}' is not recognized.");
	}

	$user_guid = $user_guids[$user_name];
	$workflow->setUserGUID($user_guid);
	$workflow->setUserName($user_name);
	}

	$config->willRunWorkflow($command, $workflow);
	$workflow->willRunWorkflow();
	$err = $workflow->run();
	if ($err == 0) {
	$config->didRunWorkflow($command, $workflow);
	}
	exit($err);

	} catch (ArcanistUsageException $ex) {
	echo phutil_console_format(
	"Usage Exception: %s\n",
	$ex->getMessage());
	if ($config_trace_mode) {
	echo "\n";
	throw $ex;
	}

	exit(1);
	} catch (Exception $ex) {
	if ($config_trace_mode) {
	throw $ex;
	}

	echo phutil_console_format(
	"\nException:\n%s\n%s\n",
	$ex->getMessage(),
	"(Run with --trace for a full exception trace.)");

	exit(1);
	}

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