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# $FreeBSD$
# POSIX and C99 say D800-DFFF are undefined in a universal character name.
# We reject this but many other shells expand to something that looks like
# CESU-8.
v=$( (eval ": \$'\uD800'") 2>&1 >/dev/null)
[ $? -ne 0 ] && [ -n "$v" ]
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