XSLT 2.0 and XPath 2.0 Programmer's Reference, 4th Edition (661 page)

\w
A character considered to form part of a word, as distinct from a separator between words: specifically a character that does not match
\p{P}
or
\p{Z}
or
\p{C}
\S
Any character that does not match
\s
\I
Any character that does not match
\i

Other books

Black Ink by N.M. Catalano
Do You Believe in Santa? by Sierra Donovan
The Vacant Casualty by Patty O'Furniture
God Is Red by Liao Yiwu
Chaos by David Meyer
Always Mr. Wrong by Joanne Rawson
Grover G. Graham and Me by Mary Quattlebaum