bug#19267: 25.0.50; Enhance cycle-spacing with a state where only whitespace after point is deleted

[Robert Pluim]

>>>>> On Thu, 12 May 2022 08:40:53 +0300, Eli Zaretskii <eliz@gnu.org> said:

    >> Cc: 19267@debbugs.gnu.org
    >> From: Lars Ingebrigtsen <larsi@gnus.org>
    >> Date: Thu, 12 May 2022 04:16:06 +0200
    >> 
    >> > i.e., it first M-SPC only deletes whitespace after point but not 
before.
    >> > I don't really care if that's the first state (although that would be
    >> > plausible, i.e., states are cycled from more space to less spaces), but
    >> > at least it should be a reachable state.
    >> 
    >> (I'm going through old bug reports that unfortunately weren't resolved
    >> at the time.)
    >> 
    >> I think that sounds like a good feature -- we don't have any other
    >> commands for "delete all whitespace after point", do we?
    >> 
    >> We could implement this as a new third state for `cycle-spacing', and
    >> move the "restore" to the fourth state.  Does anybody think that will be
    >> annoying for people?

    Eli> Is cycle-spacing bound to some key sequence in some modes?  If so, we
    Eli> should ask users of those modes, because as long as cycle-spacing can
    Eli> only be invoked via M-x, I don't believe another state would matter
    Eli> much.

Not as far as I can tell. Having tried it, Iʼd even be tempted to make
`cycle-spacing' be the default for M-SPC (itʼs only been around for a
decade or so, how did I never know about it?)

Robert
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