C-g from Isearch (was: Isearch: retrieve last successful search string from when you quit (`C-g'))

[Stephen J. Turnbull]

Dani Moncayo writes:

 > documented in (info "(emacs)Error in Isearch"), `C-g' from Isearch
 > does this:
 > * If the current search is successful, `C-g' cancels the Isearch.
 > * Else, `C-g' restores the last succesful search string.

In XEmacs, this is useless duplication.  Deleting the character has
the same effect some rather large fraction of the time, as it's
unusual that multiple not found characters are typed.

 > And I, like Nix, don't like the second case.  I would like C-g to
 > _always_ cancel the Isearch.
 > 
 > So IMO this behavior should be configurable.

I'm tempted to just change XEmacs's behavior to "always cancel" and
see how many cries of outrage can be induced.