🚀 go-pugleaf

In article <818286975snx@warren.demon.co.uk>
           leveret@warren.demon.co.uk "Nick Leverton" writes:

> A lot of surprising things are legal in DOS filenames.  Space is, for
> instance, though I haven't got a full list to hand !

From section 3.2 of Microsoft MS-DOS Programmer's Reference, ISBN
1-55615-329-5 has:

> Names and extensions can contain letters, digits, and any of the
> characters in the following set:
>     !  #  $  %  ^  &  (  )  - _    {   }   ~

     33 35 36 37 94 38 40 41 45 95 123 125 126
> ...
> Although extended ASCII characters (characters with values greater than
> 127 are also permitted in names, programs should avoid them, since the
> meaning of the extended characters may differ with different code pages.

My memory is that nearly anything goes in practice.

I knocked up a noddy using Borland C 3.1 and found the following extra
characters are acceptable in DOS 6.20
039A'B                   7 06/12/95   22:48
064A@B                   7 06/12/95   22:48
096A`B                   7 06/12/95   22:48
127AB                   7 06/12/95   22:48

I couldn't be bothered working at the interrupt level to factor out any
vagaries of the compiler. Silliness has its limitations!

The following decimal character ranges were unacceptable:
0-31,34,42-44,46,47,59-63,91-93,124
--------
walter briscoe