1*13de33a5SJulio Merino 2*13de33a5SJulio Merino# POSIX and C99 say D800-DFFF are undefined in a universal character name. 3*13de33a5SJulio Merino# We reject this but many other shells expand to something that looks like 4*13de33a5SJulio Merino# CESU-8. 5*13de33a5SJulio Merino 6*13de33a5SJulio Merinov=$( (eval ": \$'\uD800'") 2>&1 >/dev/null) 7*13de33a5SJulio Merino[ $? -ne 0 ] && [ -n "$v" ] 8