找到wp-includes/js/quicktags.js

edButtons[edButtons.length] =
new edButton(‘ed_more’
,’more’
,’<!–more–>’
,”
,’t’
,-1
);

在下方添加：

edButtons[edButtons.length] =
new edButton(‘ed_para2em’
,’para2em’
,’<p style=”text-indent:2em”>’
,’</p>’
,’pa’
);

刷新后就可以看到para2em首行缩进的标签了。