Function-name-reading minibuffer

[Robert W. Kerns <RWK at SCRC-TENEX>]

    Date: 6 May 1982 00:49-EDT
    From: Eugene C. Ciccarelli <ECC at MIT-AI>
    Experimental MIT-Specific 7.0, Experimental System 85.12,
    M-X Arglist Return Abort
    leaves you down in the minibuffer window, confused.  It should be
    going back to the main window.  M-Period also does this, so I
    suspect the culprit is the function-name completing reader.
I cannot cause this in 210.  I recently fixed similar lossages in
other places, and there may be more.  If you find other places with
this problem, let me know.