Comment 29 for bug 465309

Incidentally $ does match the end of paragraphs (as documented), but seems to match the paragraph break (not just tne -position- at the end of the paragraph), so paragraphs are merged forming a single new paragraph. Except only one of a group of successive empty paragraphs is matched.

Matching the para-break itself seems odd to me (as usually unhelpful), but might be intentional. However the fact that only some empty paragraphs are matched is almost certainly a bug.

EXAMPLE: In the following 1-line paragraphs, there are two empty paras between b and c (<P> indicates the paragraph symbol which is shown when displaying non-printing characters):
a<P>
b<P>
<P>
<P>
c<P>
Find-and-replace of $ with X replaces the 5 paragraphs with 2 paragraphs:
aXbX<P>
Xc<P>
As you can see, the 5 paragraphs were collapsed into two paragraphs, except the "paragraph break" was not removed for one of the empty paragraps.