PhutilRemarkupRuleDel.php
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			<?php

			/*
			* Copyright 2012 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.
			*/

			/**
			* @group markup
			*/
			final class PhutilRemarkupRuleDel
			extends PhutilRemarkupRule {

			public function apply($text) {
			return preg_replace(
			'@(?<!~)~~([^\s~].?~)~~@s',
			'<del>\1</del>',
			$text);
			}

			}

libphutil/src/markup/engine/remarkup/markuprule/del/PhutilRemarkupRuleDel.php67e2c010acb5stable