Annex E (informative)
Conformance with UAX #31
[uaxid]
E.2
R1 Default identifiers
[uaxid.def]
E.2.2
R1a Restricted format characters
[uaxid.def.rfmt]
1
#
If an implementation of UAX #31 wishes to allow format characters such as
U+200d
zero width joiner
or
U+200c
zero width non-joiner
it must define a profile allowing them, or describe precisely which combinations are permitted
.
2
#
C++ does not allow format characters in identifiers, so this does not apply
.