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    SubjectRe: [PATCH] Speeding up FAT operations
    Hi there.

    On 23 Sep 1998, H. Peter Anvin wrote:

    >> This may not mean much, but two years ago when I first started
    >> learning a computer I was learning QBASIC. And I read a post
    >> somewhere of an error in QBASIC that would allow you to make a
    >> space in the name that no other program could read except another
    >> QBASIC program that opened it the same way. It was something like
    >> the following... (I haven't touched it for over a year and a half
    >> so it may not be completely accurate)

    >> open "blah hi" as binary #1 (or something like this)
    >> print #1, "jkfsdjlkfsdjkl"
    >> close #1

    >> Then you can open "blah hi" with the QBASIC program again.

    ===8<=== CUT ===>8===

    > No, this is due to the fact that space is actually a legal
    > character in a filename in DOS; it is just that the command-line
    > shell considered it a separator, as did most other programs. There
    > were a grand many programs that would let you create such
    > filenames, and read them just fine. You just couldn't mess with
    > them in COMMAND.COM. I don't know if 4DOS allowed you to manipulate
    > these files or not.

    In fact, they COULD be 'messed with' from COMMAND.COM by the use of a
    very simple trick: Try the following sequence:

    Q> echo X > y
    Q> ren y y?x
    Q> dir y??

    What files show?

    Q> ren y?x test
    Q> dir

    Now what files show?

    Note that ALL of the above commands are part of COMMAND.COM so...

    Best wishes from Riley.

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