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	diff --git a/src/infrastructure/daemon/bot/handler/PhabricatorBotMacroHandler.php b/src/infrastructure/daemon/bot/handler/PhabricatorBotMacroHandler.php
	index 9b02e2965c..009982fb5b 100644
	--- a/src/infrastructure/daemon/bot/handler/PhabricatorBotMacroHandler.php
	+++ b/src/infrastructure/daemon/bot/handler/PhabricatorBotMacroHandler.php
	@@ -1,161 +1,164 @@
	<?php

	/**
	* @group irc
	*/
	final class PhabricatorBotMacroHandler extends PhabricatorBotHandler {

	private $macros;
	private $regexp;

	- private $next = 0;
	+ private $next = 0;

	private function init() {
	if ($this->macros === false) {
	return false;
	}

	if ($this->macros !== null) {
	return true;
	}

	$macros = $this->getConduit()->callMethodSynchronous(
	'macro.query',
	array());
	- // bail if we have no macros
	- if (empty($macros)) {
	+
	+ // If we have no macros, cache `false` (meaning "no macros") and return
	+ // immediately.
	+ if (!$macros) {
	+ $this->macros = false;
	return false;
	}
	- $this->macros = $macros;

	$regexp = array();
	- foreach ($this->macros as $macro_name => $macro) {
	+ foreach ($macros as $macro_name => $macro) {
	$regexp[] = preg_quote($macro_name, '/');
	}
	$regexp = '/('.implode('\|', $regexp).')/';

	+ $this->macros = $macros;
	$this->regexp = $regexp;

	return true;
	}

	public function receiveMessage(PhabricatorBotMessage $message) {
	if (!$this->init()) {
	return;
	}

	switch ($message->getCommand()) {
	case 'MESSAGE':
	$message_body = $message->getBody();

	$matches = null;
	if (!preg_match($this->regexp, $message_body, $matches)) {
	return;
	}

	$macro = $matches[1];

	$ascii = idx($this->macros[$macro], 'ascii');
	if ($ascii === false) {
	return;
	}

	if (!$ascii) {
	$this->macros[$macro]['ascii'] = $this->rasterize(
	$this->macros[$macro],
	$this->getConfig('macro.size', 48),
	$this->getConfig('macro.aspect', 0.66));
	$ascii = $this->macros[$macro]['ascii'];
	}

	$target_name = $message->getTarget()->getName();
	foreach ($ascii as $line) {
	$this->replyTo($message, $line);
	}
	break;
	}
	}

	public function rasterize($macro, $size, $aspect) {
	$image = HTTPSFuture::loadContent($macro['uri']);
	if (!$image) {
	return false;
	}

	$img = @imagecreatefromstring($image);
	if (!$img) {
	return false;
	}

	$sx = imagesx($img);
	$sy = imagesy($img);

	if ($sx > $size \|\| $sy > $size) {
	$scale = max($sx, $sy) / $size;
	$dx = floor($sx / $scale);
	$dy = floor($sy / $scale);
	} else {
	$dx = $sx;
	$dy = $sy;
	}

	$dy = floor($dy * $aspect);

	$dst = imagecreatetruecolor($dx, $dy);
	if (!$dst) {
	return false;
	}
	imagealphablending($dst, false);

	$ok = imagecopyresampled(
	$dst, $img,
	0, 0,
	0, 0,
	$dx, $dy,
	$sx, $sy);

	if (!$ok) {
	return false;
	}

	$map = array(
	' ',
	'.',
	',',
	':',
	';',
	'!',
	'\|',
	'*',
	'=',
	'@',
	'$',
	'#',
	);

	$lines = array();

	for ($ii = 0; $ii < $dy; $ii++) {
	$buf = '';
	for ($jj = 0; $jj < $dx; $jj++) {
	$c = imagecolorat($dst, $jj, $ii);

	$a = ($c >> 24) & 0xFF;
	$r = ($c >> 16) & 0xFF;
	$g = ($c >> 8) & 0xFF;
	$b = ($c) & 0xFF;

	$luma = (255 - ((0.30 * $r) + (0.59 * $g) + (0.11 * $b))) / 256;
	$luma *= ((127 - $a) / 127);

	$char = $map[max(0, floor($luma * count($map)))];
	$buf .= $char;
	}

	$lines[] = $buf;
	}

	return $lines;
	}

	}

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