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Can't search for control characters...

    Date: Thursday, 24 June 1982, 19:30-EDT
    From: Richard E. Salz <SALZ at MIT-AI>
    In ZWEI in System 210.80, ZMail 45.2, Remote-File 103.0,
    Experimental Macsyma 36.0, DAEDALUS 45.2, microcode 895,
    site configuration 8, 210.80 MacDaed, on Marvin:
    ^Q ^F, for example, just gets treated as an F.
The character C-F takes more than 8 bits.  It therefore cannot be in a buffer
to search for.  The "ascii control" character  can be searched for without
any special quoting.
    is there a way to make case be a factor?  (ie, F <> f)
Do M-X Set Variable
Alphabetic Case Affects Search