id	summary	reporter	owner	description	type	status	priority	milestone	component	version	severity	resolution	keywords	cc
14857	Shortcode causes preceding HTML tag to disappear	cymric		"On my Wordpress 3.0.1 installation (Atahualpa theme 3.4.4, PHP 5.2.12 + Zend 2.2.0 running on SunOS 5.10) I've succesfully added a shortcode which allows me to 'write' an image into the text of a contribution; all the hard work of figuring out where it should be displayed, how wide the container should be, and what the caption looks like is handled by the shortcode callback function. It works very well, but for one weird issue.

If I use a HTML construct like 

{{{
<p>[photo location=""..."" link=""...""]Lorem ipsum dolor sit amet...
}}}

where [photo...] expands into a complex <span>, then on random occasions the shortcode processing will swallow the preceding <p> tag. If I didn't have specific CSS applied to distinguish between the appearance of various <a> tags in <p> text (which rely on very specific child selectors, amongst which the presence of an opening <p> tag) I would never have seen the problem. If I modify the HTML to

{{{
<p><!---->[photo location=""..."" link=""...""]Lorem ipsum dolor sit amet...
}}}

which introduces a non-visible break between the <p> tag and the shortcode, then the <p> tag is left alone. Oddly enough, the comment is not removed either.

Unfortunately there seems to be no pattern to this 'gobbling up' of preceding tags; I only know it is there, and how to work around it. On a previous occasion (dealing with ticket #14468) I had been instructed to up the PCRE backtrack limit, but setting this at an in my opinion ridiculous value of 5000000 did not cause the problem to disappear. I can provide a visual demonstration of the problem if required."	defect (bug)	closed	normal		Shortcodes	3.0.1	normal	duplicate