D21862.id52129.diff
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D21862.id52129.diff
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	diff --git a/.gitignore b/.gitignore
	--- a/.gitignore
	+++ b/.gitignore
	@@ -36,6 +36,8 @@

	# NPM local packages
	/support/aphlict/server/node_modules/
	+/support/aphlict/server/package.json
	+/support/aphlict/server/package-lock.json

	# Places for users to add custom resources.
	/resources/cows/custom/*
	diff --git a/src/aphront/AphrontRequest.php b/src/aphront/AphrontRequest.php
	--- a/src/aphront/AphrontRequest.php
	+++ b/src/aphront/AphrontRequest.php
	@@ -66,7 +66,7 @@
	}

	public static function parseURILineRange($range, $limit) {
	- if (!strlen($range)) {
	+ if ($range === null \|\| !strlen($range)) {
	return null;
	}

	@@ -448,11 +448,10 @@
	}

	private function getPrefixedCookieName($name) {
	- if (strlen($this->cookiePrefix)) {
	+ if ($this->cookiePrefix !== null && strlen($this->cookiePrefix)) {
	return $this->cookiePrefix.'_'.$name;
	- } else {
	- return $name;
	}
	+ return $name;
	}

	public function getCookie($name, $default = null) {
	@@ -499,7 +498,7 @@
	// domain is. This makes setup easier, and we'll tell administrators to
	// configure a base domain during the setup process.
	$base_uri = PhabricatorEnv::getEnvConfig('phabricator.base-uri');
	- if (!strlen($base_uri)) {
	+ if ($base_uri === null \|\| !strlen($base_uri)) {
	return new PhutilURI('http://'.$host.'/');
	}

	@@ -956,7 +955,7 @@
	$submit_cookie = PhabricatorCookies::COOKIE_SUBMIT;

	$submit_key = $this->getCookie($submit_cookie);
	- if (strlen($submit_key)) {
	+ if ($submit_key !== null && strlen($submit_key)) {
	$this->clearCookie($submit_cookie);
	$this->submitKey = $submit_key;
	}
	diff --git a/src/aphront/response/AphrontFileResponse.php b/src/aphront/response/AphrontFileResponse.php
	--- a/src/aphront/response/AphrontFileResponse.php
	+++ b/src/aphront/response/AphrontFileResponse.php
	@@ -19,7 +19,7 @@
	}

	public function setDownload($download) {
	- if (!strlen($download)) {
	+ if ($download === null \|\| !strlen($download)) {
	$download = 'untitled';
	}
	$this->download = $download;
	@@ -113,7 +113,8 @@
	$headers[] = array('Content-Length', $content_len);
	}

	- if (strlen($this->getDownload())) {
	+ $download = $this->getDownload();
	+ if ($download !== null && strlen($download)) {
	$headers[] = array('X-Download-Options', 'noopen');

	$filename = $this->getDownload();
	@@ -150,7 +151,7 @@
	$begin = (int)$matches[1];

	// The "Range" may be "200-299" or "200-", meaning "until end of file".
	- if (strlen($matches[2])) {
	+ if ($matches[2] !== null && strlen($matches[2])) {
	$range_end = (int)$matches[2];
	$end = $range_end + 1;
	} else {
	diff --git a/src/aphront/response/AphrontWebpageResponse.php b/src/aphront/response/AphrontWebpageResponse.php
	--- a/src/aphront/response/AphrontWebpageResponse.php
	+++ b/src/aphront/response/AphrontWebpageResponse.php
	@@ -21,7 +21,7 @@

	public function buildResponseString() {
	$unexpected_output = $this->getUnexpectedOutput();
	- if (strlen($unexpected_output)) {
	+ if ($unexpected_output !== null && strlen($unexpected_output)) {
	$style = array(
	'background: linear-gradient(180deg, #eeddff, #ddbbff);',
	'white-space: pre-wrap;',
	diff --git a/src/applications/auth/constants/PhabricatorCookies.php b/src/applications/auth/constants/PhabricatorCookies.php
	--- a/src/applications/auth/constants/PhabricatorCookies.php
	+++ b/src/applications/auth/constants/PhabricatorCookies.php
	@@ -89,7 +89,7 @@
	// temporary and clearing it when users log out.

	$value = $request->getCookie(self::COOKIE_CLIENTID);
	- if (!strlen($value)) {
	+ if ($value === null \|\| !strlen($value)) {
	$request->setTemporaryCookie(
	self::COOKIE_CLIENTID,
	Filesystem::readRandomCharacters(16));
	diff --git a/src/applications/auth/controller/PhabricatorAuthController.php b/src/applications/auth/controller/PhabricatorAuthController.php
	--- a/src/applications/auth/controller/PhabricatorAuthController.php
	+++ b/src/applications/auth/controller/PhabricatorAuthController.php
	@@ -282,7 +282,7 @@
	$viewer,
	PhabricatorAuthLoginMessageType::MESSAGEKEY);

	- if (!strlen($text)) {
	+ if ($text === null \|\| !strlen($text)) {
	return null;
	}

	diff --git a/src/applications/auth/controller/PhabricatorAuthRegisterController.php b/src/applications/auth/controller/PhabricatorAuthRegisterController.php
	--- a/src/applications/auth/controller/PhabricatorAuthRegisterController.php
	+++ b/src/applications/auth/controller/PhabricatorAuthRegisterController.php
	@@ -18,7 +18,7 @@
	$invite = $this->loadInvite();

	$is_setup = false;
	- if (strlen($account_key)) {
	+ if ($account_key !== null && strlen($account_key)) {
	$result = $this->loadAccountForRegistrationOrLinking($account_key);
	list($account, $provider, $response) = $result;
	$is_default = false;
	@@ -244,9 +244,9 @@

	$require_real_name = PhabricatorEnv::getEnvConfig('user.require-real-name');

	- $e_username = strlen($value_username) ? null : true;
	+ $e_username = phutil_nonempty_string($value_username) ? null : true;
	$e_realname = $require_real_name ? true : null;
	- $e_email = strlen($value_email) ? null : true;
	+ $e_email = phutil_nonempty_string($value_email) ? null : true;
	$e_password = true;
	$e_captcha = true;

	@@ -288,7 +288,7 @@

	if ($can_edit_username) {
	$value_username = $request->getStr('username');
	- if (!strlen($value_username)) {
	+ if (!phutil_nonempty_string($value_username)) {
	$e_username = pht('Required');
	$errors[] = pht('Username is required.');
	} else if (!PhabricatorUser::validateUsername($value_username)) {
	@@ -323,7 +323,7 @@

	if ($can_edit_email) {
	$value_email = $request->getStr('email');
	- if (!strlen($value_email)) {
	+ if (!phutil_nonempty_string($value_email)) {
	$e_email = pht('Required');
	$errors[] = pht('Email is required.');
	} else if (!PhabricatorUserEmail::isValidAddress($value_email)) {
	@@ -339,7 +339,7 @@

	if ($can_edit_realname) {
	$value_realname = $request->getStr('realName');
	- if (!strlen($value_realname) && $require_real_name) {
	+ if (!phutil_nonempty_string($value_realname) && $require_real_name) {
	$e_realname = pht('Required');
	$errors[] = pht('Real name is required.');
	} else {
	diff --git a/src/applications/auth/controller/PhabricatorAuthStartController.php b/src/applications/auth/controller/PhabricatorAuthStartController.php
	--- a/src/applications/auth/controller/PhabricatorAuthStartController.php
	+++ b/src/applications/auth/controller/PhabricatorAuthStartController.php
	@@ -31,7 +31,7 @@
	$session_token = $request->getCookie(PhabricatorCookies::COOKIE_SESSION);
	$did_clear = $request->getStr('cleared');

	- if (strlen($session_token)) {
	+ if ($session_token !== null && strlen($session_token)) {
	$kind = PhabricatorAuthSessionEngine::getSessionKindFromToken(
	$session_token);
	switch ($kind) {
	@@ -98,7 +98,7 @@
	}

	$next_uri = $request->getStr('next');
	- if (!strlen($next_uri)) {
	+ if (phutil_nonempty_string($next_uri)) {
	if ($this->getDelegatingController()) {
	// Only set a next URI from the request path if this controller was
	// delegated to, which happens when a user tries to view a page which
	@@ -112,7 +112,7 @@
	}

	if (!$request->isFormPost()) {
	- if (strlen($next_uri)) {
	+ if (phutil_nonempty_string($next_uri)) {
	PhabricatorCookies::setNextURICookie($request, $next_uri);
	}
	PhabricatorCookies::setClientIDCookie($request);
	@@ -226,7 +226,7 @@

	$via_header = AphrontRequest::getViaHeaderName();
	$via_uri = AphrontRequest::getHTTPHeader($via_header);
	- if (strlen($via_uri)) {
	+ if ($via_uri !== null && strlen($via_uri)) {
	PhabricatorCookies::setNextURICookie($request, $via_uri, $force = true);
	}

	diff --git a/src/applications/auth/password/PhabricatorAuthPasswordException.php b/src/applications/auth/password/PhabricatorAuthPasswordException.php
	--- a/src/applications/auth/password/PhabricatorAuthPasswordException.php
	+++ b/src/applications/auth/password/PhabricatorAuthPasswordException.php
	@@ -4,7 +4,7 @@
	extends Exception {

	private $passwordError;
	- private $confirmErorr;
	+ private $confirmError;

	public function __construct(
	$message,
	diff --git a/src/applications/base/controller/PhabricatorController.php b/src/applications/base/controller/PhabricatorController.php
	--- a/src/applications/base/controller/PhabricatorController.php
	+++ b/src/applications/base/controller/PhabricatorController.php
	@@ -74,7 +74,7 @@
	$session_engine = new PhabricatorAuthSessionEngine();

	$phsid = $request->getCookie(PhabricatorCookies::COOKIE_SESSION);
	- if (strlen($phsid)) {
	+ if ($phsid !== null && strlen($phsid)) {
	$session_user = $session_engine->loadUserForSession(
	PhabricatorAuthSession::TYPE_WEB,
	$phsid);
	diff --git a/src/applications/celerity/controller/CelerityResourceController.php b/src/applications/celerity/controller/CelerityResourceController.php
	--- a/src/applications/celerity/controller/CelerityResourceController.php
	+++ b/src/applications/celerity/controller/CelerityResourceController.php
	@@ -113,7 +113,7 @@

	$range = AphrontRequest::getHTTPHeader('Range');

	- if (strlen($range)) {
	+ if ($range !== null && strlen($range)) {
	$response->setContentLength(strlen($data));

	list($range_begin, $range_end) = $response->parseHTTPRange($range);
	diff --git a/src/applications/config/check/PhabricatorBaseURISetupCheck.php b/src/applications/config/check/PhabricatorBaseURISetupCheck.php
	--- a/src/applications/config/check/PhabricatorBaseURISetupCheck.php
	+++ b/src/applications/config/check/PhabricatorBaseURISetupCheck.php
	@@ -11,7 +11,7 @@

	$host_header = AphrontRequest::getHTTPHeader('Host');
	if (strpos($host_header, '.') === false) {
	- if (!strlen(trim($host_header))) {
	+ if ($host_header === null \|\| !strlen(trim($host_header))) {
	$name = pht('No "Host" Header');
	$summary = pht('No "Host" header present in request.');
	$message = pht(
	diff --git a/src/applications/config/check/PhabricatorDaemonsSetupCheck.php b/src/applications/config/check/PhabricatorDaemonsSetupCheck.php
	--- a/src/applications/config/check/PhabricatorDaemonsSetupCheck.php
	+++ b/src/applications/config/check/PhabricatorDaemonsSetupCheck.php
	@@ -53,7 +53,7 @@
	}

	$expect_user = PhabricatorEnv::getEnvConfig('phd.user');
	- if (strlen($expect_user)) {
	+ if ($expect_user !== null && strlen($expect_user)) {

	try {
	$all_daemons = id(new PhabricatorDaemonLogQuery())
	diff --git a/src/applications/config/check/PhabricatorPHPPreflightSetupCheck.php b/src/applications/config/check/PhabricatorPHPPreflightSetupCheck.php
	--- a/src/applications/config/check/PhabricatorPHPPreflightSetupCheck.php
	+++ b/src/applications/config/check/PhabricatorPHPPreflightSetupCheck.php
	@@ -124,7 +124,7 @@
	}

	$open_basedir = ini_get('open_basedir');
	- if (strlen($open_basedir)) {
	+ if ($open_basedir !== null && strlen($open_basedir)) {
	// If `open_basedir` is set, just fatal. It's technically possible for
	// us to run with certain values of `open_basedir`, but: we can only
	// raise fatal errors from preflight steps, so we'd have to do this check
	diff --git a/src/applications/config/check/PhabricatorSetupCheck.php b/src/applications/config/check/PhabricatorSetupCheck.php
	--- a/src/applications/config/check/PhabricatorSetupCheck.php
	+++ b/src/applications/config/check/PhabricatorSetupCheck.php
	@@ -122,7 +122,7 @@
	$db_cache = new PhabricatorKeyValueDatabaseCache();
	try {
	$value = $db_cache->getKey('phabricator.setup.issue-keys');
	- if (!strlen($value)) {
	+ if ($value === null \|\| !strlen($value)) {
	return null;
	}
	return phutil_json_decode($value);
	diff --git a/src/applications/config/check/PhabricatorStorageSetupCheck.php b/src/applications/config/check/PhabricatorStorageSetupCheck.php
	--- a/src/applications/config/check/PhabricatorStorageSetupCheck.php
	+++ b/src/applications/config/check/PhabricatorStorageSetupCheck.php
	@@ -151,19 +151,19 @@

	$how_many = 0;

	- if (strlen($access_key)) {
	+ if ($access_key !== null && strlen($access_key)) {
	$how_many++;
	}

	- if (strlen($secret_key)) {
	+ if ($secret_key !== null && strlen($secret_key)) {
	$how_many++;
	}

	- if (strlen($region)) {
	+ if ($region !== null && strlen($region)) {
	$how_many++;
	}

	- if (strlen($endpoint)) {
	+ if ($endpoint !== null && strlen($endpoint)) {
	$how_many++;
	}

	diff --git a/src/applications/config/check/PhabricatorWebServerSetupCheck.php b/src/applications/config/check/PhabricatorWebServerSetupCheck.php
	--- a/src/applications/config/check/PhabricatorWebServerSetupCheck.php
	+++ b/src/applications/config/check/PhabricatorWebServerSetupCheck.php
	@@ -23,7 +23,7 @@
	}

	$base_uri = PhabricatorEnv::getEnvConfig('phabricator.base-uri');
	- if (!strlen($base_uri)) {
	+ if ($base_uri === null \|\| !strlen($base_uri)) {
	// If `phabricator.base-uri` is not set then we can't really do
	// anything.
	return;
	diff --git a/src/applications/config/controller/PhabricatorConfigConsoleController.php b/src/applications/config/controller/PhabricatorConfigConsoleController.php
	--- a/src/applications/config/controller/PhabricatorConfigConsoleController.php
	+++ b/src/applications/config/controller/PhabricatorConfigConsoleController.php
	@@ -85,14 +85,14 @@
	$rows = array();
	foreach ($versions as $name => $info) {
	$branchpoint = $info['branchpoint'];
	- if (strlen($branchpoint)) {
	+ if ($branchpoint !== null && strlen($branchpoint)) {
	$branchpoint = substr($branchpoint, 0, 12);
	} else {
	$branchpoint = null;
	}

	$version = $info['hash'];
	- if (strlen($version)) {
	+ if ($version !== null && strlen($version)) {
	$version = substr($version, 0, 12);
	} else {
	$version = pht('Unknown');
	diff --git a/src/applications/config/controller/services/PhabricatorConfigDatabaseStatusController.php b/src/applications/config/controller/services/PhabricatorConfigDatabaseStatusController.php
	--- a/src/applications/config/controller/services/PhabricatorConfigDatabaseStatusController.php
	+++ b/src/applications/config/controller/services/PhabricatorConfigDatabaseStatusController.php
	@@ -837,7 +837,7 @@

	$parts = array();
	foreach ($properties as $key => $property) {
	- if (!strlen($property)) {
	+ if ($property === null \|\| !strlen($property)) {
	continue;
	}

	diff --git a/src/applications/config/controller/settings/PhabricatorConfigSettingsListController.php b/src/applications/config/controller/settings/PhabricatorConfigSettingsListController.php
	--- a/src/applications/config/controller/settings/PhabricatorConfigSettingsListController.php
	+++ b/src/applications/config/controller/settings/PhabricatorConfigSettingsListController.php
	@@ -7,7 +7,7 @@
	$viewer = $request->getViewer();

	$filter = $request->getURIData('filter');
	- if (!strlen($filter)) {
	+ if ($filter === null \|\| !strlen($filter)) {
	$filter = 'settings';
	}

	diff --git a/src/applications/console/controller/DarkConsoleController.php b/src/applications/console/controller/DarkConsoleController.php
	--- a/src/applications/console/controller/DarkConsoleController.php
	+++ b/src/applications/console/controller/DarkConsoleController.php
	@@ -26,7 +26,7 @@
	}

	$visible = $request->getStr('visible');
	- if (strlen($visible)) {
	+ if (phutil_nonempty_string($visible)) {
	$this->writeDarkConsoleSetting(
	PhabricatorDarkConsoleVisibleSetting::SETTINGKEY,
	(int)$visible);
	@@ -34,7 +34,7 @@
	}

	$tab = $request->getStr('tab');
	- if (strlen($tab)) {
	+ if (phutil_nonempty_string($tab)) {
	$this->writeDarkConsoleSetting(
	PhabricatorDarkConsoleTabSetting::SETTINGKEY,
	$tab);
	diff --git a/src/applications/console/core/DarkConsoleCore.php b/src/applications/console/core/DarkConsoleCore.php
	--- a/src/applications/console/core/DarkConsoleCore.php
	+++ b/src/applications/console/core/DarkConsoleCore.php
	@@ -114,6 +114,9 @@
	* need to convert it to UTF-8.
	*/
	private function sanitizeForJSON($data) {
	+ if ($data === null) {
	+ return '<null>';
	+ }
	if (is_object($data)) {
	return '<object:'.get_class($data).'>';
	} else if (is_array($data)) {
	diff --git a/src/applications/diffusion/conduit/DiffusionHistoryQueryConduitAPIMethod.php b/src/applications/diffusion/conduit/DiffusionHistoryQueryConduitAPIMethod.php
	--- a/src/applications/diffusion/conduit/DiffusionHistoryQueryConduitAPIMethod.php
	+++ b/src/applications/diffusion/conduit/DiffusionHistoryQueryConduitAPIMethod.php
	@@ -55,7 +55,7 @@
	$limit = $request->getValue('limit');

	if (strlen($against_hash)) {
	- $commit_range = "${against_hash}..${commit_hash}";
	+ $commit_range = "{$against_hash}..{$commit_hash}";
	} else {
	$commit_range = $commit_hash;
	}
	diff --git a/src/applications/diffusion/controller/DiffusionController.php b/src/applications/diffusion/controller/DiffusionController.php
	--- a/src/applications/diffusion/controller/DiffusionController.php
	+++ b/src/applications/diffusion/controller/DiffusionController.php
	@@ -97,19 +97,19 @@
	AphrontRequest $request) {

	$short_name = $request->getURIData('repositoryShortName');
	- if (strlen($short_name)) {
	+ if ($short_name !== null && strlen($short_name)) {
	// If the short name ends in ".git", ignore it.
	$short_name = preg_replace('/\\.git\z/', '', $short_name);
	return $short_name;
	}

	$identifier = $request->getURIData('repositoryCallsign');
	- if (strlen($identifier)) {
	+ if ($identifier !== null && strlen($identifier)) {
	return $identifier;
	}

	$id = $request->getURIData('repositoryID');
	- if (strlen($id)) {
	+ if ($id !== null && strlen($id)) {
	return (int)$id;
	}

	diff --git a/src/applications/files/builtin/PhabricatorFilesComposeAvatarBuiltinFile.php b/src/applications/files/builtin/PhabricatorFilesComposeAvatarBuiltinFile.php
	--- a/src/applications/files/builtin/PhabricatorFilesComposeAvatarBuiltinFile.php
	+++ b/src/applications/files/builtin/PhabricatorFilesComposeAvatarBuiltinFile.php
	@@ -183,11 +183,11 @@
	'image/png');
	}

	- private static function rgba2gd($rgba) {
	- $r = $rgba[0];
	- $g = $rgba[1];
	- $b = $rgba[2];
	- $a = $rgba[3];
	+ private static function rgba2gd(array $rgba) {
	+ $r = (int)$rgba[0];
	+ $g = (int)$rgba[1];
	+ $b = (int)$rgba[2];
	+ $a = (int)$rgba[3];
	$a = (1 - $a) * 255;
	return ($a << 24) \| ($r << 16) \| ($g << 8) \| $b;
	}
	diff --git a/src/applications/files/conduit/FileAllocateConduitAPIMethod.php b/src/applications/files/conduit/FileAllocateConduitAPIMethod.php
	--- a/src/applications/files/conduit/FileAllocateConduitAPIMethod.php
	+++ b/src/applications/files/conduit/FileAllocateConduitAPIMethod.php
	@@ -65,7 +65,7 @@
	->executeOne();
	}

	- if (strlen($name) && !$hash && !$file) {
	+ if ($name !== null && strlen($name) && !$hash && !$file) {
	if ($length > PhabricatorFileStorageEngine::getChunkThreshold()) {
	// If we don't have a hash, but this file is large enough to store in
	// chunks and thus may be resumable, try to find a partially uploaded
	diff --git a/src/applications/files/controller/PhabricatorFileDataController.php b/src/applications/files/controller/PhabricatorFileDataController.php
	--- a/src/applications/files/controller/PhabricatorFileDataController.php
	+++ b/src/applications/files/controller/PhabricatorFileDataController.php
	@@ -29,7 +29,7 @@
	$request_kind = $request->getURIData('kind');
	$is_download = ($request_kind === 'download');

	- if (!strlen($alt) \|\| $main_domain == $alt_domain) {
	+ if (($alt === null \|\| !strlen($alt)) \|\| $main_domain == $alt_domain) {
	// No alternate domain.
	$should_redirect = false;
	$is_alternate_domain = false;
	@@ -69,7 +69,7 @@
	// an initial request for bytes 0-1 of the audio file, and things go south
	// if we can't respond with a 206 Partial Content.
	$range = $request->getHTTPHeader('range');
	- if (strlen($range)) {
	+ if ($range !== null && strlen($range)) {
	list($begin, $end) = $response->parseHTTPRange($range);
	}

	diff --git a/src/applications/files/controller/PhabricatorFileLightboxController.php b/src/applications/files/controller/PhabricatorFileLightboxController.php
	--- a/src/applications/files/controller/PhabricatorFileLightboxController.php
	+++ b/src/applications/files/controller/PhabricatorFileLightboxController.php
	@@ -20,7 +20,7 @@
	return new Aphront404Response();
	}

	- if (strlen($comment)) {
	+ if ($comment !== null && strlen($comment)) {
	$xactions = array();
	$xactions[] = id(new PhabricatorFileTransaction())
	->setTransactionType(PhabricatorTransactions::TYPE_COMMENT)
	diff --git a/src/applications/files/controller/PhabricatorFileViewController.php b/src/applications/files/controller/PhabricatorFileViewController.php
	--- a/src/applications/files/controller/PhabricatorFileViewController.php
	+++ b/src/applications/files/controller/PhabricatorFileViewController.php
	@@ -311,12 +311,12 @@
	$file->getStorageHandle());

	$custom_alt = $file->getCustomAltText();
	- if (strlen($custom_alt)) {
	+ if ($custom_alt !== null && strlen($custom_alt)) {
	$finfo->addProperty(pht('Custom Alt Text'), $custom_alt);
	}

	$default_alt = $file->getDefaultAltText();
	- if (strlen($default_alt)) {
	+ if ($default_alt !== null && strlen($default_alt)) {
	$finfo->addProperty(pht('Default Alt Text'), $default_alt);
	}

	diff --git a/src/applications/files/document/PhabricatorJupyterDocumentEngine.php b/src/applications/files/document/PhabricatorJupyterDocumentEngine.php
	--- a/src/applications/files/document/PhabricatorJupyterDocumentEngine.php
	+++ b/src/applications/files/document/PhabricatorJupyterDocumentEngine.php
	@@ -323,7 +323,7 @@
	}

	$nbformat = idx($data, 'nbformat');
	- if (!strlen($nbformat)) {
	+ if ($nbformat == null \|\| !strlen($nbformat)) {
	throw new Exception(
	pht(
	'This document is missing an "nbformat" field. Jupyter notebooks '.
	diff --git a/src/applications/files/document/render/PhabricatorDocumentRenderingEngine.php b/src/applications/files/document/render/PhabricatorDocumentRenderingEngine.php
	--- a/src/applications/files/document/render/PhabricatorDocumentRenderingEngine.php
	+++ b/src/applications/files/document/render/PhabricatorDocumentRenderingEngine.php
	@@ -60,12 +60,12 @@
	}

	$encode_setting = $request->getStr('encode');
	- if (strlen($encode_setting)) {
	+ if (phutil_nonempty_string($encode_setting)) {
	$engine->setEncodingConfiguration($encode_setting);
	}

	$highlight_setting = $request->getStr('highlight');
	- if (strlen($highlight_setting)) {
	+ if (phutil_nonempty_string($highlight_setting)) {
	$engine->setHighlightingConfiguration($highlight_setting);
	}

	@@ -208,12 +208,12 @@
	$this->activeEngine = $engine;

	$encode_setting = $request->getStr('encode');
	- if (strlen($encode_setting)) {
	+ if (phutil_nonempty_string($encode_setting)) {
	$engine->setEncodingConfiguration($encode_setting);
	}

	$highlight_setting = $request->getStr('highlight');
	- if (strlen($highlight_setting)) {
	+ if (phutil_nonempty_string($highlight_setting)) {
	$engine->setHighlightingConfiguration($highlight_setting);
	}

	diff --git a/src/applications/files/engine/PhabricatorS3FileStorageEngine.php b/src/applications/files/engine/PhabricatorS3FileStorageEngine.php
	--- a/src/applications/files/engine/PhabricatorS3FileStorageEngine.php
	+++ b/src/applications/files/engine/PhabricatorS3FileStorageEngine.php
	@@ -31,11 +31,11 @@
	$endpoint = PhabricatorEnv::getEnvConfig('amazon-s3.endpoint');
	$region = PhabricatorEnv::getEnvConfig('amazon-s3.region');

	- return (strlen($bucket) &&
	- strlen($access_key) &&
	- strlen($secret_key) &&
	- strlen($endpoint) &&
	- strlen($region));
	+ return ($bucket !== null && strlen($bucket) &&
	+ $access_key !== null && strlen($access_key) &&
	+ $secret_key !== null && strlen($secret_key) &&
	+ $endpoint !== null && strlen($endpoint) &&
	+ $region !== null && strlen($region));
	}


	@@ -57,7 +57,7 @@
	$parts[] = 'phabricator';

	$instance_name = PhabricatorEnv::getEnvConfig('cluster.instance');
	- if (strlen($instance_name)) {
	+ if ($instance_name !== null && strlen($instance_name)) {
	$parts[] = $instance_name;
	}

	diff --git a/src/applications/files/markup/PhabricatorEmbedFileRemarkupRule.php b/src/applications/files/markup/PhabricatorEmbedFileRemarkupRule.php
	--- a/src/applications/files/markup/PhabricatorEmbedFileRemarkupRule.php
	+++ b/src/applications/files/markup/PhabricatorEmbedFileRemarkupRule.php
	@@ -197,7 +197,7 @@
	$alt = $options['alt'];
	}

	- if (!strlen($alt)) {
	+ if ($alt === null \|\| !strlen($alt)) {
	$alt = $file->getAltText();
	}

	@@ -346,6 +346,9 @@
	}

	private function parseDimension($string) {
	+ if ($string === null \|\| !strlen($string)) {
	+ return null;
	+ }
	$string = trim($string);

	if (preg_match('/^(?:\d*\\.)?\d+%?$/', $string)) {
	diff --git a/src/applications/files/markup/PhabricatorImageRemarkupRule.php b/src/applications/files/markup/PhabricatorImageRemarkupRule.php
	--- a/src/applications/files/markup/PhabricatorImageRemarkupRule.php
	+++ b/src/applications/files/markup/PhabricatorImageRemarkupRule.php
	@@ -49,7 +49,8 @@

	$args += $defaults;

	- if (!strlen($args['uri'])) {
	+ $uri_arg = $args['uri'];
	+ if ($uri_arg === null \|\| !strlen($uri_arg)) {
	return $matches[0];
	}

	@@ -57,9 +58,9 @@
	// validate it more carefully before proxying it, but if whatever the user
	// has typed isn't even close, just decline to activate the rule behavior.
	try {
	- $uri = new PhutilURI($args['uri']);
	+ $uri = new PhutilURI($uri_arg);

	- if (!strlen($uri->getProtocol())) {
	+ if ($uri->getProtocol() === null \|\| !strlen($uri->getProtocol())) {
	return $matches[0];
	}

	diff --git a/src/applications/files/storage/PhabricatorFile.php b/src/applications/files/storage/PhabricatorFile.php
	--- a/src/applications/files/storage/PhabricatorFile.php
	+++ b/src/applications/files/storage/PhabricatorFile.php
	@@ -288,7 +288,7 @@
	// update the parent file if a MIME type hasn't been provided. This matters
	// for large media files like video.
	$mime_type = idx($params, 'mime-type');
	- if (!strlen($mime_type)) {
	+ if ($mime_type === null \|\| !strlen($mime_type)) {
	$file->setMimeType('application/octet-stream');
	}

	@@ -856,7 +856,7 @@
	// instance identity in the path allows us to distinguish between requests
	// originating from different instances but served through the same CDN.
	$instance = PhabricatorEnv::getEnvConfig('cluster.instance');
	- if (strlen($instance)) {
	+ if ($instance !== null && strlen($instance)) {
	$parts[] = '@'.$instance;
	}

	@@ -903,7 +903,7 @@
	$parts[] = 'xform';

	$instance = PhabricatorEnv::getEnvConfig('cluster.instance');
	- if (strlen($instance)) {
	+ if ($instance !== null && strlen($instance)) {
	$parts[] = '@'.$instance;
	}

	@@ -1278,7 +1278,7 @@
	public function getAltText() {
	$alt = $this->getCustomAltText();

	- if (strlen($alt)) {
	+ if ($alt !== null && strlen($alt)) {
	return $alt;
	}

	@@ -1309,7 +1309,7 @@
	$parts = array();

	$name = $this->getName();
	- if (strlen($name)) {
	+ if ($name !== null && strlen($name)) {
	$parts[] = $name;
	}

	diff --git a/src/applications/files/view/PhabricatorGlobalUploadTargetView.php b/src/applications/files/view/PhabricatorGlobalUploadTargetView.php
	--- a/src/applications/files/view/PhabricatorGlobalUploadTargetView.php
	+++ b/src/applications/files/view/PhabricatorGlobalUploadTargetView.php
	@@ -67,7 +67,7 @@
	require_celerity_resource('global-drag-and-drop-css');

	$hint_text = $this->getHintText();
	- if (!strlen($hint_text)) {
	+ if ($hint_text === null \|\| !strlen($hint_text)) {
	$hint_text = "\xE2\x87\xAA ".pht('Drop Files to Upload');
	}

	diff --git a/src/applications/herald/phid/HeraldTranscriptPHIDType.php b/src/applications/herald/phid/HeraldTranscriptPHIDType.php
	--- a/src/applications/herald/phid/HeraldTranscriptPHIDType.php
	+++ b/src/applications/herald/phid/HeraldTranscriptPHIDType.php
	@@ -35,7 +35,7 @@
	$id = $xscript->getID();

	$handle->setName(pht('Transcript %s', $id));
	- $handle->setURI("/herald/transcript/${id}/");
	+ $handle->setURI("/herald/transcript/{$id}/");
	}
	}

	diff --git a/src/applications/meta/query/PhabricatorAppSearchEngine.php b/src/applications/meta/query/PhabricatorAppSearchEngine.php
	--- a/src/applications/meta/query/PhabricatorAppSearchEngine.php
	+++ b/src/applications/meta/query/PhabricatorAppSearchEngine.php
	@@ -45,7 +45,7 @@
	->withUnlisted(false);

	$name = $saved->getParameter('name');
	- if (strlen($name)) {
	+ if ($name !== null && strlen($name)) {
	$query->withNameContains($name);
	}

	diff --git a/src/applications/notification/client/PhabricatorNotificationServerRef.php b/src/applications/notification/client/PhabricatorNotificationServerRef.php
	--- a/src/applications/notification/client/PhabricatorNotificationServerRef.php
	+++ b/src/applications/notification/client/PhabricatorNotificationServerRef.php
	@@ -144,7 +144,19 @@
	}

	public function getURI($to_path = null) {
	- $full_path = rtrim($this->getPath(), '/').'/'.ltrim($to_path, '/');
	+ if ($to_path === null \|\| !strlen($to_path)) {
	+ $to_path = '';
	+ } else {
	+ $to_path = '/'.ltrim($to_path, '/');
	+ }
	+
	+ $base_path = $this->getPath();
	+ if ($base_path === null \|\| !strlen($base_path)) {
	+ $base_path = '';
	+ } else {
	+ $base_path = rtrim($base_path, '/');
	+ }
	+ $full_path = $base_path.$to_path;

	$uri = id(new PhutilURI('http://'.$this->getHost()))
	->setProtocol($this->getProtocol())
	@@ -152,7 +164,7 @@
	->setPath($full_path);

	$instance = PhabricatorEnv::getEnvConfig('cluster.instance');
	- if (strlen($instance)) {
	+ if ($instance !== null && strlen($instance)) {
	$uri->replaceQueryParam('instance', $instance);
	}

	@@ -161,7 +173,7 @@

	public function getWebsocketURI($to_path = null) {
	$instance = PhabricatorEnv::getEnvConfig('cluster.instance');
	- if (strlen($instance)) {
	+ if ($instance !== null && strlen($instance)) {
	$to_path = $to_path.'~'.$instance.'/';
	}

	diff --git a/src/applications/notification/config/PhabricatorNotificationServersConfigType.php b/src/applications/notification/config/PhabricatorNotificationServersConfigType.php
	--- a/src/applications/notification/config/PhabricatorNotificationServersConfigType.php
	+++ b/src/applications/notification/config/PhabricatorNotificationServersConfigType.php
	@@ -92,7 +92,7 @@
	}

	$path = idx($spec, 'path');
	- if ($type == 'admin' && strlen($path)) {
	+ if ($type == 'admin' && $path !== null && strlen($path)) {
	throw $this->newException(
	pht(
	'Notification server configuration describes an invalid host '.
	diff --git a/src/applications/people/cache/PhabricatorUserProfileImageCacheType.php b/src/applications/people/cache/PhabricatorUserProfileImageCacheType.php
	--- a/src/applications/people/cache/PhabricatorUserProfileImageCacheType.php
	+++ b/src/applications/people/cache/PhabricatorUserProfileImageCacheType.php
	@@ -91,6 +91,10 @@
	}

	public function isRawCacheDataValid(PhabricatorUser $user, $key, $data) {
	+ if ($data === null) {
	+ return false;
	+ }
	+
	$parts = explode(',', $data, 2);
	$version = reset($parts);
	return ($version === $this->getCacheVersion($user));
	diff --git a/src/applications/people/view/PhabricatorUserLogView.php b/src/applications/people/view/PhabricatorUserLogView.php
	--- a/src/applications/people/view/PhabricatorUserLogView.php
	+++ b/src/applications/people/view/PhabricatorUserLogView.php
	@@ -36,7 +36,12 @@

	$rows = array();
	foreach ($logs as $log) {
	- $session = substr($log->getSession(), 0, 6);
	+ // Events such as "Login Failure" will not have an associated session.
	+ $session = $log->getSession();
	+ if ($session === null) {
	+ $session = '';
	+ }
	+ $session = substr($session, 0, 6);

	$actor_phid = $log->getActorPHID();
	$user_phid = $log->getUserPHID();
	diff --git a/src/applications/search/compiler/PhutilSearchQueryCompiler.php b/src/applications/search/compiler/PhutilSearchQueryCompiler.php
	--- a/src/applications/search/compiler/PhutilSearchQueryCompiler.php
	+++ b/src/applications/search/compiler/PhutilSearchQueryCompiler.php
	@@ -104,6 +104,9 @@
	private function tokenizeQuery($query) {
	$maximum_bytes = 1024;

	+ if ($query === null) {
	+ $query = '';
	+ }
	$query_bytes = strlen($query);
	if ($query_bytes > $maximum_bytes) {
	throw new PhutilSearchQueryCompilerSyntaxException(
	diff --git a/src/applications/search/controller/PhabricatorApplicationSearchController.php b/src/applications/search/controller/PhabricatorApplicationSearchController.php
	--- a/src/applications/search/controller/PhabricatorApplicationSearchController.php
	+++ b/src/applications/search/controller/PhabricatorApplicationSearchController.php
	@@ -112,10 +112,10 @@
	$named_query = null;
	$run_query = true;
	$query_key = $this->queryKey;
	- if ($this->queryKey == 'advanced') {
	+ if ($query_key == 'advanced') {
	$run_query = false;
	$query_key = $request->getStr('query');
	- } else if (!strlen($this->queryKey)) {
	+ } else if ($query_key === null \|\| !strlen($query_key)) {
	$found_query_data = false;

	if ($request->isHTTPGet() \|\| $request->isQuicksand()) {
	@@ -775,7 +775,7 @@
	$force_nux) {

	// Don't render NUX if the user has clicked away from the default page.
	- if (strlen($this->getQueryKey())) {
	+ if ($this->getQueryKey() !== null && strlen($this->getQueryKey())) {
	return null;
	}

	@@ -1022,7 +1022,7 @@
	$object_name = pht('%s %s', $object->getMonogram(), $object->getName());

	// Likewise, the context object can only be a dashboard.
	- if (strlen($context_phid)) {
	+ if ($context_phid !== null && !strlen($context_phid)) {
	$context = id(new PhabricatorDashboardQuery())
	->setViewer($viewer)
	->withPHIDs(array($context_phid))
	diff --git a/src/applications/search/engine/PhabricatorApplicationSearchEngine.php b/src/applications/search/engine/PhabricatorApplicationSearchEngine.php
	--- a/src/applications/search/engine/PhabricatorApplicationSearchEngine.php
	+++ b/src/applications/search/engine/PhabricatorApplicationSearchEngine.php
	@@ -179,7 +179,7 @@

	$order = $saved->getParameter('order');
	$builtin = $query->getBuiltinOrderAliasMap();
	- if (strlen($order) && isset($builtin[$order])) {
	+ if ($order !== null && strlen($order) && isset($builtin[$order])) {
	$query->setOrder($order);
	} else {
	// If the order is invalid or not available, we choose the first
	@@ -872,7 +872,7 @@
	protected function readBoolFromRequest(
	AphrontRequest $request,
	$key) {
	- if (!strlen($request->getStr($key))) {
	+ if (!phutil_nonempty_string($request->getStr($key))) {
	return null;
	}
	return $request->getBool($key);
	@@ -895,7 +895,7 @@
	* @task dates
	*/
	protected function parseDateTime($date_time) {
	- if (!strlen($date_time)) {
	+ if ($date_time === null \|\| !strlen($date_time)) {
	return null;
	}

	@@ -916,7 +916,7 @@

	$start_str = $saved_query->getParameter($start_key);
	$start = null;
	- if (strlen($start_str)) {
	+ if ($start_str !== null && strlen($start_str)) {
	$start = $this->parseDateTime($start_str);
	if (!$start) {
	$this->addError(
	@@ -929,7 +929,7 @@

	$end_str = $saved_query->getParameter($end_key);
	$end = null;
	- if (strlen($end_str)) {
	+ if ($end_str !== null && strlen($end_str)) {
	$end = $this->parseDateTime($end_str);
	if (!$end) {
	$this->addError(
	@@ -1137,7 +1137,7 @@
	$viewer = $this->requireViewer();

	$query_key = $request->getValue('queryKey');
	- if (!strlen($query_key)) {
	+ if ($query_key === null \|\| !strlen($query_key)) {
	$saved_query = new PhabricatorSavedQuery();
	} else if ($this->isBuiltinQuery($query_key)) {
	$saved_query = $this->buildSavedQueryFromBuiltin($query_key);
	diff --git a/src/applications/search/engine/PhabricatorProfileMenuEngine.php b/src/applications/search/engine/PhabricatorProfileMenuEngine.php
	--- a/src/applications/search/engine/PhabricatorProfileMenuEngine.php
	+++ b/src/applications/search/engine/PhabricatorProfileMenuEngine.php
	@@ -135,7 +135,7 @@
	if ($is_view) {
	$selected_item = $this->selectViewItem($view_list, $item_id);
	} else {
	- if (!strlen($item_id)) {
	+ if ($item_id === null \|\| !strlen($item_id)) {
	$item_id = self::ITEM_MANAGE;
	}
	$selected_item = $this->selectEditItem($view_list, $item_id);
	@@ -1308,7 +1308,7 @@
	// render the default view instead.

	$selected_view = null;
	- if (strlen($item_id)) {
	+ if ($item_id !== null && strlen($item_id)) {
	$item_views = $view_list->getViewsWithItemIdentifier($item_id);
	if ($item_views) {
	$selected_view = head($item_views);
	diff --git a/src/applications/search/engine/PhabricatorProfileMenuItemView.php b/src/applications/search/engine/PhabricatorProfileMenuItemView.php
	--- a/src/applications/search/engine/PhabricatorProfileMenuItemView.php
	+++ b/src/applications/search/engine/PhabricatorProfileMenuItemView.php
	@@ -110,7 +110,7 @@
	return $this->isExternalLink;
	}

	- public function setIsLabel($is_label) {
	+ public function setIsLabel() {
	return $this->setSpecialType('label');
	}

	@@ -118,7 +118,7 @@
	return $this->isSpecialType('label');
	}

	- public function setIsDivider($is_divider) {
	+ public function setIsDivider() {
	return $this->setSpecialType('divider');
	}

	@@ -140,7 +140,7 @@
	->setName($this->getName());

	$uri = $this->getURI();
	- if (strlen($uri)) {
	+ if ($uri !== null && strlen($uri)) {
	if ($this->getIsExternalLink()) {
	if (!PhabricatorEnv::isValidURIForLink($uri)) {
	$uri = '#';
	@@ -176,7 +176,7 @@
	}

	$tooltip = $this->getTooltip();
	- if (strlen($tooltip)) {
	+ if ($tooltip !== null && strlen($tooltip)) {
	$view->setTooltip($tooltip);
	}

	diff --git a/src/applications/search/field/PhabricatorSearchDateField.php b/src/applications/search/field/PhabricatorSearchDateField.php
	--- a/src/applications/search/field/PhabricatorSearchDateField.php
	+++ b/src/applications/search/field/PhabricatorSearchDateField.php
	@@ -17,7 +17,7 @@
	}

	protected function validateControlValue($value) {
	- if (!strlen($value)) {
	+ if ($value === null \|\| !strlen($value)) {
	return;
	}

	@@ -32,7 +32,7 @@
	}

	protected function parseDateTime($value) {
	- if (!strlen($value)) {
	+ if ($value === null \|\| !strlen($value)) {
	return null;
	}

	diff --git a/src/applications/transactions/editengine/PhabricatorEditEngine.php b/src/applications/transactions/editengine/PhabricatorEditEngine.php
	--- a/src/applications/transactions/editengine/PhabricatorEditEngine.php
	+++ b/src/applications/transactions/editengine/PhabricatorEditEngine.php
	@@ -941,7 +941,7 @@
	}
	} else {
	$form_key = $request->getURIData('formKey');
	- if (strlen($form_key)) {
	+ if ($form_key !== null && strlen($form_key)) {
	$config = $this->loadEditEngineConfigurationWithIdentifier($form_key);

	if (!$config) {
	@@ -971,14 +971,14 @@
	}

	$page_key = $request->getURIData('pageKey');
	- if (!strlen($page_key)) {
	+ if ($page_key === null \|\| !strlen($page_key)) {
	$pages = $this->getPages($object);
	if ($pages) {
	$page_key = head_key($pages);
	}
	}

	- if (strlen($page_key)) {
	+ if ($page_key !== null && strlen($page_key)) {
	$page = $this->selectPage($object, $page_key);
	if (!$page) {
	return new Aphront404Response();
	@@ -1169,7 +1169,7 @@
	if ($this->getIsCreate()) {
	$template = $request->getStr('template');

	- if (strlen($template)) {
	+ if (phutil_nonempty_string($template)) {
	$template_object = $this->newObjectFromIdentifier(
	$template,
	array(
	@@ -1909,7 +1909,7 @@
	$comment_text = $request->getStr('comment');

	$comment_metadata = $request->getStr('comment_metadata');
	- if (strlen($comment_metadata)) {
	+ if (phutil_nonempty_string($comment_metadata)) {
	$comment_metadata = phutil_json_decode($comment_metadata);
	}

	@@ -2009,7 +2009,7 @@
	$xactions[] = $xaction;
	}

	- if (strlen($comment_text) \|\| !$xactions) {
	+ if (($comment_text !== null && strlen($comment_text)) \|\| !$xactions) {
	$xactions[] = id(clone $template)
	->setTransactionType(PhabricatorTransactions::TYPE_COMMENT)
	->setMetadataValue('remarkup.control', $comment_metadata)
	diff --git a/src/applications/transactions/editengine/PhabricatorEditEngineSubtype.php b/src/applications/transactions/editengine/PhabricatorEditEngineSubtype.php
	--- a/src/applications/transactions/editengine/PhabricatorEditEngineSubtype.php
	+++ b/src/applications/transactions/editengine/PhabricatorEditEngineSubtype.php
	@@ -89,6 +89,9 @@
	}

	public function hasTagView() {
	+ if ($this->getTagText() === null) {
	+ return false;
	+ }
	return (bool)strlen($this->getTagText());
	}

	diff --git a/src/applications/transactions/editfield/PhabricatorEditField.php b/src/applications/transactions/editfield/PhabricatorEditField.php
	--- a/src/applications/transactions/editfield/PhabricatorEditField.php
	+++ b/src/applications/transactions/editfield/PhabricatorEditField.php
	@@ -418,7 +418,7 @@
	}

	$instructions = $this->getControlInstructions();
	- if (strlen($instructions)) {
	+ if ($instructions !== null && strlen($instructions)) {
	$form->appendRemarkupInstructions($instructions);
	}

	diff --git a/src/applications/transactions/editfield/PhabricatorTextEditField.php b/src/applications/transactions/editfield/PhabricatorTextEditField.php
	--- a/src/applications/transactions/editfield/PhabricatorTextEditField.php
	+++ b/src/applications/transactions/editfield/PhabricatorTextEditField.php
	@@ -18,7 +18,7 @@
	$control = new AphrontFormTextControl();

	$placeholder = $this->getPlaceholder();
	- if (strlen($placeholder)) {
	+ if ($placeholder !== null && strlen($placeholder)) {
	$control->setPlaceholder($placeholder);
	}

	diff --git a/src/applications/transactions/editor/PhabricatorApplicationTransactionEditor.php b/src/applications/transactions/editor/PhabricatorApplicationTransactionEditor.php
	--- a/src/applications/transactions/editor/PhabricatorApplicationTransactionEditor.php
	+++ b/src/applications/transactions/editor/PhabricatorApplicationTransactionEditor.php
	@@ -617,7 +617,7 @@
	return true;
	case PhabricatorTransactions::TYPE_SPACE:
	$space_phid = $xaction->getNewValue();
	- if (!strlen($space_phid)) {
	+ if ($space_phid === null \|\| !strlen($space_phid)) {
	// If an install has no Spaces or the Spaces controls are not visible
	// to the viewer, we might end up with the empty string here instead
	// of a strict `null`, because some controller just used `getStr()`
	diff --git a/src/applications/typeahead/controller/PhabricatorTypeaheadModularDatasourceController.php b/src/applications/typeahead/controller/PhabricatorTypeaheadModularDatasourceController.php
	--- a/src/applications/typeahead/controller/PhabricatorTypeaheadModularDatasourceController.php
	+++ b/src/applications/typeahead/controller/PhabricatorTypeaheadModularDatasourceController.php
	@@ -39,7 +39,7 @@
	$parameters = array();

	$raw_parameters = $request->getStr('parameters');
	- if (strlen($raw_parameters)) {
	+ if (phutil_nonempty_string($raw_parameters)) {
	try {
	$parameters = phutil_json_decode($raw_parameters);
	} catch (PhutilJSONParserException $ex) {
	diff --git a/src/applications/typeahead/datasource/PhabricatorTypeaheadCompositeDatasource.php b/src/applications/typeahead/datasource/PhabricatorTypeaheadCompositeDatasource.php
	--- a/src/applications/typeahead/datasource/PhabricatorTypeaheadCompositeDatasource.php
	+++ b/src/applications/typeahead/datasource/PhabricatorTypeaheadCompositeDatasource.php
	@@ -28,7 +28,8 @@

	// We only need to do a prefix phase query if there's an actual query
	// string. If the user didn't type anything, nothing can possibly match it.
	- if (strlen($this->getRawQuery())) {
	+ $raw_query = $this->getRawQuery();
	+ if ($raw_query !== null && strlen($raw_query)) {
	$phases[] = self::PHASE_PREFIX;
	}

	@@ -214,6 +215,9 @@
	if (!$limit) {
	$limit = count($results);
	}
	+ if (!$offset) {
	+ $offset = 0;
	+ }

	$results = array_slice($results, $offset, $limit, $preserve_keys = true);
	}
	diff --git a/src/applications/typeahead/datasource/PhabricatorTypeaheadDatasource.php b/src/applications/typeahead/datasource/PhabricatorTypeaheadDatasource.php
	--- a/src/applications/typeahead/datasource/PhabricatorTypeaheadDatasource.php
	+++ b/src/applications/typeahead/datasource/PhabricatorTypeaheadDatasource.php
	@@ -147,6 +147,9 @@
	}

	public static function tokenizeString($string) {
	+ if ($string === null) {
	+ return array();
	+ }
	$string = phutil_utf8_strtolower($string);
	$string = trim($string);
	if (!strlen($string)) {
	@@ -464,7 +467,7 @@
	// We're looking for a "(" so that a string like "members(q" is identified
	// and parsed as a function call. This allows us to start generating
	// results immediately, before the user fully types out "members(quack)".
	- return (strpos($token, '(') !== false);
	+ return ($token !== null && strpos($token, '(') !== false);
	}


	diff --git a/src/infrastructure/cluster/PhabricatorDatabaseRef.php b/src/infrastructure/cluster/PhabricatorDatabaseRef.php
	--- a/src/infrastructure/cluster/PhabricatorDatabaseRef.php
	+++ b/src/infrastructure/cluster/PhabricatorDatabaseRef.php
	@@ -229,7 +229,7 @@
	$host = $this->getHost();

	$port = $this->getPort();
	- if (strlen($port)) {
	+ if ($port !== null && strlen($port)) {
	return "{$host}:{$port}";
	}

	diff --git a/src/infrastructure/customfield/field/PhabricatorCustomFieldList.php b/src/infrastructure/customfield/field/PhabricatorCustomFieldList.php
	--- a/src/infrastructure/customfield/field/PhabricatorCustomFieldList.php
	+++ b/src/infrastructure/customfield/field/PhabricatorCustomFieldList.php
	@@ -89,7 +89,7 @@
	$field_handles = array_select_keys($handles, $phids[$field_key]);

	$instructions = $field->getInstructionsForEdit();
	- if (strlen($instructions)) {
	+ if ($instructions !== null && strlen($instructions)) {
	$form->appendRemarkupInstructions($instructions);
	}

	diff --git a/src/infrastructure/env/PhabricatorEnv.php b/src/infrastructure/env/PhabricatorEnv.php
	--- a/src/infrastructure/env/PhabricatorEnv.php
	+++ b/src/infrastructure/env/PhabricatorEnv.php
	@@ -125,7 +125,7 @@
	// If an instance identifier is defined, write it into the environment so
	// it's available to subprocesses.
	$instance = self::getEnvConfig('cluster.instance');
	- if (strlen($instance)) {
	+ if ($instance !== null && strlen($instance)) {
	putenv('PHABRICATOR_INSTANCE='.$instance);
	$_ENV['PHABRICATOR_INSTANCE'] = $instance;
	}
	diff --git a/src/infrastructure/javelin/markup.php b/src/infrastructure/javelin/markup.php
	--- a/src/infrastructure/javelin/markup.php
	+++ b/src/infrastructure/javelin/markup.php
	@@ -77,7 +77,10 @@
	$is_post = (strcasecmp($http_method, 'POST') === 0);

	$http_action = idx($attributes, 'action');
	- $is_absolute_uri = preg_match('#^(https?:\|//)#', $http_action);
	+ $is_absolute_uri = false;
	+ if ($http_action != null) {
	+ $is_absolute_uri = preg_match('#^(https?:\|//)#', $http_action);
	+ }

	if ($is_post) {

	diff --git a/src/view/control/AphrontTableView.php b/src/view/control/AphrontTableView.php
	--- a/src/view/control/AphrontTableView.php
	+++ b/src/view/control/AphrontTableView.php
	@@ -135,7 +135,7 @@

	$col_classes = array();
	foreach ($this->columnClasses as $key => $class) {
	- if (strlen($class)) {
	+ if ($class !== null && strlen($class)) {
	$col_classes[] = $class;
	} else {
	$col_classes[] = null;
	diff --git a/src/view/form/control/AphrontFormControl.php b/src/view/form/control/AphrontFormControl.php
	--- a/src/view/form/control/AphrontFormControl.php
	+++ b/src/view/form/control/AphrontFormControl.php
	@@ -109,7 +109,7 @@
	}

	public function isEmpty() {
	- return !strlen($this->getValue());
	+ return $this->getValue() === null \|\| !strlen($this->getValue());
	}

	public function getSerializedValue() {
	@@ -171,9 +171,8 @@
	array('class' => 'aphront-form-input'),
	$this->renderInput());

	- $error = null;
	- if (strlen($this->getError())) {
	- $error = $this->getError();
	+ $error = $this->error;
	+ if ($error !== null && strlen($error)) {
	if ($error === true) {
	$error = phutil_tag(
	'span',
	@@ -185,9 +184,12 @@
	array('class' => 'aphront-form-error'),
	$error);
	}
	+ } else {
	+ $error = null;
	}

	- if (strlen($this->getLabel())) {
	+ $label = $this->label;
	+ if ($label !== null && strlen($label)) {
	$label = phutil_tag(
	'label',
	array(
	@@ -203,7 +205,8 @@
	$custom_class .= ' aphront-form-control-nolabel';
	}

	- if (strlen($this->getCaption())) {
	+ $caption = $this->caption;
	+ if ($caption !== null && strlen($caption)) {
	$caption = phutil_tag(
	'div',
	array('class' => 'aphront-form-caption'),
	diff --git a/src/view/form/control/AphrontFormTokenizerControl.php b/src/view/form/control/AphrontFormTokenizerControl.php
	--- a/src/view/form/control/AphrontFormTokenizerControl.php
	+++ b/src/view/form/control/AphrontFormTokenizerControl.php
	@@ -67,8 +67,8 @@
	}
	$datasource->setViewer($this->getUser());

	- $placeholder = null;
	- if (!strlen($this->placeholder)) {
	+ $placeholder = $this->placeholder;
	+ if ($placeholder === null \|\| !strlen($placeholder)) {
	$placeholder = $datasource->getPlaceholderText();
	}

	diff --git a/src/view/layout/AphrontSideNavFilterView.php b/src/view/layout/AphrontSideNavFilterView.php
	--- a/src/view/layout/AphrontSideNavFilterView.php
	+++ b/src/view/layout/AphrontSideNavFilterView.php
	@@ -97,11 +97,10 @@
	->setName($name)
	->setType($type);

	- if (strlen($icon)) {
	+ if ($icon !== null) {
	$item->setIcon($icon);
	}

	-
	if (strlen($key)) {
	$item->setKey($key);
	}
	@@ -145,7 +144,7 @@

	public function selectFilter($key, $default = null) {
	$this->selectedFilter = $default;
	- if ($this->menu->getItem($key) && strlen($key)) {
	+ if ($key !== null && strlen($key) && $this->menu->getItem($key)) {
	$this->selectedFilter = $key;
	}
	return $this->selectedFilter;
	diff --git a/src/view/page/PhabricatorStandardPageView.php b/src/view/page/PhabricatorStandardPageView.php
	--- a/src/view/page/PhabricatorStandardPageView.php
	+++ b/src/view/page/PhabricatorStandardPageView.php
	@@ -188,7 +188,7 @@
	}
	}

	- if (strlen($prefix)) {
	+ if ($prefix !== null && strlen($prefix)) {
	$title = $prefix.' '.$title;
	}

	diff --git a/src/view/page/menu/PhabricatorMainMenuView.php b/src/view/page/menu/PhabricatorMainMenuView.php
	--- a/src/view/page/menu/PhabricatorMainMenuView.php
	+++ b/src/view/page/menu/PhabricatorMainMenuView.php
	@@ -333,7 +333,7 @@


	$wordmark_text = PhabricatorCustomLogoConfigType::getLogoWordmark();
	- if (!strlen($wordmark_text)) {
	+ if ($wordmark_text === null \|\| !strlen($wordmark_text)) {
	$wordmark_text = PlatformSymbols::getPlatformServerName();
	}

	diff --git a/src/view/phui/PHUIInfoView.php b/src/view/phui/PHUIInfoView.php
	--- a/src/view/phui/PHUIInfoView.php
	+++ b/src/view/phui/PHUIInfoView.php
	@@ -44,8 +44,8 @@
	return $this;
	}

	- public function setIsHidden($bool) {
	- $this->isHidden = $bool;
	+ public function setIsHidden($is_hidden) {
	+ $this->isHidden = $is_hidden;
	return $this;
	}

	@@ -147,7 +147,7 @@
	}

	$title = $this->title;
	- if ($title \|\| strlen($title)) {
	+ if ($title !== null && strlen($title)) {
	$title = phutil_tag(
	'h1',
	array(
	diff --git a/src/view/phui/PHUIObjectItemListView.php b/src/view/phui/PHUIObjectItemListView.php
	--- a/src/view/phui/PHUIObjectItemListView.php
	+++ b/src/view/phui/PHUIObjectItemListView.php
	@@ -120,7 +120,7 @@
	require_celerity_resource('phui-oi-color-css');

	$header = null;
	- if (strlen($this->header)) {
	+ if ($this->header !== null && strlen($this->header)) {
	$header = phutil_tag(
	'h1',
	array(
	@@ -141,7 +141,7 @@
	}

	$items = $this->items;
	- } else if ($this->allowEmptyList) {
	+ } else if ($this->getAllowEmptyList()) {
	$items = null;
	} else {
	$string = nonempty($this->noDataString, pht('No data.'));
	diff --git a/src/view/phui/PHUIObjectItemView.php b/src/view/phui/PHUIObjectItemView.php
	--- a/src/view/phui/PHUIObjectItemView.php
	+++ b/src/view/phui/PHUIObjectItemView.php
	@@ -97,6 +97,10 @@
	return $this;
	}

	+ public function getHeader() {
	+ return $this->header;
	+ }
	+
	public function setSubHead($subhead) {
	$this->subhead = $subhead;
	return $this;
	@@ -122,10 +126,6 @@
	return $this->titleText;
	}

	- public function getHeader() {
	- return $this->header;
	- }
	-
	public function addByline($byline) {
	$this->bylines[] = $byline;
	return $this;
	@@ -659,8 +659,12 @@
	$this->getImageIcon());
	}

	- if ($image && (strlen($this->href) \|\| strlen($this->imageHref))) {
	- $image_href = ($this->imageHref) ? $this->imageHref : $this->href;
	+ $image_href = $this->href;
	+ if ($image_href === null \|\| !strlen($image_href)) {
	+ $image_href = $this->imageHref;
	+ }
	+
	+ if ($image && $image_href !== null && strlen($image_href)) {
	$image = phutil_tag(
	'a',
	array(
	@@ -873,7 +877,7 @@
	'class' => 'phui-oi-status-icon',
	);

	- if (strlen($label)) {
	+ if ($label !== null && strlen($label)) {
	$options['sigil'] = 'has-tooltip';
	$options['meta'] = array('tip' => $label, 'size' => 300);
	}
	diff --git a/src/view/phui/PHUITagView.php b/src/view/phui/PHUITagView.php
	--- a/src/view/phui/PHUITagView.php
	+++ b/src/view/phui/PHUITagView.php
	@@ -105,6 +105,10 @@
	return $this;
	}

	+ public function getHref() {
	+ return $this->href;
	+ }
	+
	public function setClosed($closed) {
	$this->closed = $closed;
	return $this;
	@@ -126,7 +130,7 @@
	}

	protected function getTagName() {
	- return strlen($this->href) ? 'a' : 'span';
	+ return ($this->href !== null && strlen($this->href)) ? 'a' : 'span';
	}

	public function setContextObject($context_object) {
	diff --git a/src/view/widget/AphrontStackTraceView.php b/src/view/widget/AphrontStackTraceView.php
	--- a/src/view/widget/AphrontStackTraceView.php
	+++ b/src/view/widget/AphrontStackTraceView.php
	@@ -30,7 +30,7 @@
	$relative = $file;
	foreach ($libraries as $library) {
	$root = phutil_get_library_root($library);
	- if (Filesystem::isDescendant($file, $root)) {
	+ if ($file !== null && Filesystem::isDescendant($file, $root)) {
	$lib = $library;
	$relative = Filesystem::readablePath($file, $root);
	break;

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