suffix C<_safe>, like C<isSPACE_utf8_safe>. These take an extra
parameter, giving an upper limit of how far into the string it is safe
to read. Using the old versions could cause attempts to read beyond the
-end of the input buffer if the UTF-8 is not well-formed. Details are at
+end of the input buffer if the UTF-8 is not well-formed, and their use
+now raises a deprecation warning. Details are at
L<perlapi/Character classification>.
=item *