WordPressで改行( br要素 )を自由に使う

theme/functions.php

<?php
//複数改行を有効にするスクリプト
/*
Script Name: Force Break
Author: Tenman
Author URI: http://www.tenman.info/
Version: 0.1
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html

/

add_filter('the_content','force_break_before',3 ); add_filter('the_content','force_break_after',99999 ); function force_break_before($contents){ if(preg_match('!\[nobita\]!',$contents) ){ return str_replace( PHP_EOL,'<br class="space" />'.PHP_EOL,$contents ); } return $contents; } function force_break_after($contents){ if(preg_match('!\[nobita\]!',$contents) ){ return str_replace(array( '<br />','<br>','[nobita]'),array( '', '', '' ), $contents ); } return $contents; } ?>

style.css

hr + br.space,
body + br.space,
div + br.space,
dl + br.space,
dt + br.space,
dd + br.space,
ul + br.space,
ol + br.space,
li + br.space,
h1 + br.space,
h2 + br.space,
h3 + br.space,
h4 + br.space,
h5 + br.space,
h6 + br.space,
pre + br.space,
code + br.space,
form + br.space,
fieldset + br.space,
legend + br.space,
input + br.space,
button + br.space,
textarea + br.space,
blockquote + br.space,
table br.space,
th + br.space,
tbody + br.space,
thead + br.space,
tfoot + br.space,
tr + br.space,
td + br.space{
	display:none;
}

http://d.hatena.ne.jp/tenman/20121004/p1(@source)

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