normalize-space( )
stringnormalize-space( )stringnormalize-space(string s)
The normalize-space()
function strips all leading and trailing whitespace
from its argument and replaces each run of whitespace with a
single space character. Among other effects, this removes all line
breaks. If the argument is omitted, it normalizes the string-value
of the context node. A nonstring may be passed to this function,
in which case it's automatically converted to a string, as if by
the string( ) function, and
that string is normalized and returned.