RE: [patch] Run occur command restricted to a region

[Drew Adams]

>  (define-key search-map "o"    'occur)
> +(define-key search-map "b"    'occur-backward)
> +(define-key search-map "f"    'occur-forward)

FWIW, I don't think those keys (`M-s b' and `M-s f') should be
bound to those commands.  If we want to bind the new commands
during Isearch then I suggest that the occur commands be grouped
on prefix key `M-s o':

  M-s oo   occur
  M-s ob   occur-backward
  M-s of   occur-backward

`M-s' is a _general_ search prefix key.  There is nothing
particularly mnemonic about `b' or `f' being `occur-backward'
or `occur-forward'.  And we should not sacrifice 3 `M-s' keys
to these commands.

I, and perhaps other users, and perhaps in the future vanilla
Emacs, have other bindings on `M-s'.  And `M-s' bindings can
be anything at all related to the encompassing context of
searching.