Here's the beginning of the list of characters denoted by \p{P}, courtesy of
Martin's XSLT program:

Dec	Chr
33	!
34	"
35	#
37	%
38	&
39	'
40	(
41	)
42	*
44	,
45	-
46	.
47	/
58	:
59	;
63	?
64	@
91	[
92	\
93	]
95	_
123	{
125	}
161	B!
167	B'
171	B+
182	B6