Can't search for control characters...

[Mark J. Dulcey <Dulcey at MIT-AI>]

    Date: Friday, 25 June 1982, 17:16-EDT
    From: Mike McMahon <MMcM at SCRC-TENEX>
    Subject: Can't search for control characters...
    To: SALZ at MIT-AI
    Cc: BUG-ZWEI at MIT-EECS

	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.
							Also,
	is there a way to make case be a factor?  (ie, F <> f)
    Do M-X Set Variable
    Alphabetic Case Affects Search
    T

There is an inconsistency here.  Typing C-Q C-F at a buffer or
minibuffer gets you an  (epsilon).  Typing C-Q C-F at an I-search gets
you an F (capital F).  I think what he found really IS a bug in
I-search.