Re: Selection changes in revno 100822

[Thierry Volpiatto]

Eli Zaretskii <address@hidden> writes:

>> From: "Drew Adams" <address@hidden>
>> Cc: <address@hidden>, <address@hidden>,
>>         "'David De La Harpe Golden'" <address@hidden>
>> Date: Sat, 14 Aug 2010 21:48:50 -0700
>> 
>> You don't say here whether selecting using the mouse copies to the
>> kill-ring.
>
> Since the default value of mouse-drag-copy-region is now nil, it
> doesn't by default.
>
>> And you don't say whether C-y after selecting with the mouse yanks what was
>> selected.
>
> No, it doesn't yank, for the same reason (I think).
>
>> > if you mark a region with C-SPC and do C-w, you won't be able
>> > to paste the text in with mouse-2, unlike earlier Emacs versions.
>> 
>> My primary concern right now (because it is what I use most now) is the 
>> behavior
>> on Windows, but I do care also about the behavior on other platforms.
>> 
>> And I'm curious.  What is the rationale for such behavior (C-w followed by
>> mouse-2 will prevent it from yanking what was killed)?
>
> Apparently, the GUI recommendations on X are now that the primary
> selection is used only in conjunction with the mouse, while the
> clipboard is used only in conjunction with keyboard cut/paste (C-c,
> C-v, etc.).  IOW, mouse selection and mouse-2 style copy/paste is no
> longer regarded as _the_ copy/cat-n-paste operations, only the
> keyboard ops are.
>
> See David's mail a few hours ago in this thread.
>
>> Apparently C-SPC plus motion to select, followed by mouse-2, does
>> yank what was selected (good)
>
> Since C-SPC+motion selects the text, and selected text is "yank"able
> with mouse-2, yes.
>
>> but if you use C-w (or M-w, for that matter) before clicking
>> mouse-2 then nothing is yanked (bad).
>
> If the text was selected with the mouse (or any other way that
> activates the mark) prior to C-w, then you can still "yank" with
> mouse-2, by virtue of that selection.  So this is still "good" in most
> use-cases.
>
>> I really don't understand what is going on (why).  Is this all just about
>> limiting Emacs to make it more like other apps on X?
>
> That's my current understanding, yes.  "User expectations" and all
> that.
>
>> AFAICS we haven't yet gotten a simple description of the proposed changes, in
>> terms of how they will affect users: use cases, pros & cons, what will change
>> and why.
>
> David's mail comes close, except that Emacs currently does not behave
> 100% according to what he describes:
>
>   clipboards aren't overwritten when you merely select text.
>   clipboards are overwritten when you cut/copy (C-x/C-c)
>   clipboards are not inserted when you click mouse-2.
>   clipboards are inserted when you paste (C-v)
>   primary selections are overwritten when you merely select text.
>   primary selections are not overwritten when you cut/copy (C-x/C-c)
>    (but they've probably already just been overwritten because you
>     selected text just before you cut/copied).
>   primary selections are inserted when you click mouse-2.
>   primary selections are not inserted when you paste (C-v)

What is described here seem to be with CUA mode activated (C-x/C-c/C-v)
isn't it? :-(
So can you describe what yank/kill with defaults setting is actually
supposed to do?


-- 
Thierry Volpiatto
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