Re: Keyboard grabs

[Richard Stallman]

    I kind of assumed that if you are debugging and suspect you might end up
    in this situation, you set the variable in the debugger before starting
    Emacs.  If you forget this, you are hosed of course, so a default off
    for uninstalled is a good idea.

    What is the proper way to check for installed/uninstalled Emacs?

Look at the value of installation-directory.  It is nil
for an installed Emacs.