This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21 Core Issues List revision 108h. See http://www.open-std.org/jtc1/sc22/wg21/ for the official list.
[Voted into WP at March, 2010 meeting.]
According to 5.3 [lex.charset] paragraph 3,
The values of the members of the execution character sets are implementation-defined, and any additional members are locale-specific.
This makes it sound as if the locale determines only whether an extended character (one not in the basic execution character set) exists, not its value (which is just implementation-defined, not locale-specific). The description should be clarified to indicate that the value of a given character can vary between locales, as well.
Proposed resolution (February, 2010):
Change 5.3 [lex.charset] paragraph 3 as follows:
...The execution character set and the execution wide-character set are supersets of the basic execution character set and the basic execution wide-character set, respectively. The values of the members of the execution character sets
are implementation-defined, and any additional membersare locale-specific.