ghost file

[Guy Harris]

>The Bourne shell uses the 8th bit of characters for special purposes

The Bourne shell, in releases prior to System V Release 3, uses the 8th
bit of characters for quoting purposes; the S5R3 Bourne shell, and later
releases, do not.  SunOS 4.0, as well as systems that advertise
themselves as S5R3-based, have that version of the shell.

The C shell, as it comes from Berkeley, and versions of the Korn shell
prior to "ksh-i" also use the 8th bit for quoting purposes.