#
# In Bash we could simply go:
#
#   readarray ARGS < <( xargs -n1 <<<"$var" ) &&
#   set -- "${ARGS[@]}" "$@"
#
# but POSIX shell has neither arrays nor command substitution, so instead we
# post-process each arg (as a line of input to sed) to backslash-escape any
# character that might be a shell metacharacter, then use eval to reverse

2DE0..2DFF    ; valid                                  # 5.1  COMBINING CYRILLIC LETTER BE..COMBINING CYRILLIC LETTER IOTIFIED BIG YUS
2E00..2E17    ; valid                  ;      ; NV8    # 4.1  RIGHT ANGLE SUBSTITUTION MARKER..DOUBLE OBLIQUE HYPHEN
2E18..2E1B    ; valid                  ;      ; NV8    # 5.1  INVERTED INTERROBANG..TILDE WITH RING ABOVE