[wp-hackers] What does the last line in the wpautop function do?

[Otto]

On Wed, Sep 17, 2008 at 9:00 PM, Glenn Ansley <glenn at glennansley.com> wrote:
> I found a rouge line that started with [caption] and ended with [/caption]
> but it did not appear to be generated by WP. I'm pretty sure the author
> pasted it from some other engine. After deleting that line, the post comes
> through with flying colors.
>
> So, problem is resolved but I'm not sure if I understand the root of it.

The [caption] shortcode is used for creating captions around images.
So if you use it in some wrong way, then yes, stuff between it will
probably get deleted.