bug#74833: 31.0.50; Copy to OS clipboard doesn't work in macOS Terminal.app with xterm-mouse-mode enabled

[Gerd Möllmann]

Eli Zaretskii <eliz@gnu.org> writes:

>> Date: Sun, 15 Dec 2024 21:16:16 -0800
>> From: Jared Finder <jared@finder.org>
>> Cc: Eli Zaretskii <eliz@gnu.org>, Filipp Gunbin <fgunbin@fastmail.fm>,
>>  74833@debbugs.gnu.org, shipmints@gmail.com
>> 
>> On 2024-12-15 19:40, Gerd Möllmann wrote:
>> > Jared Finder <jared@finder.org> writes:
>> > 
>> >> What about adding a workaround that uses the command line tool pbcopy
>> >> (Mac version of xclip)? The pbcopy program is distributed with MacOS
>> >> by default.
>> > 
>> > The Elpa package xclip uses that.
>> > 
>> >   ;; This package allows Emacs to copy to and paste from the GUI 
>> > clipboard
>> >   ;; when running in text terminal.
>> >   ;;
>> >   ;; It can use external command-line tools for that, which you may 
>> > need
>> >   ;; to install in order for the package to work.
>> 
>> Thanks. I just tested xclip-mode from Elpa and it indeed works to get 
>> copy operations work with Terminal.app. I think the best path forward 
>> would be to just mention this package in the NEWS update as a workaround 
>> for folks using Terminal.app. We could also recommend using iTerm2 as a 
>> GPL'd alternative that properly supports copy. (Paste works fine because 
>> Terminal.app supports xterm bracketed pastes.)
>> 
>> Eli, does this sound good to you?
>
> It does (I think it should also be in PROBLEMS), but I wonder whether
> we should disable xterm-mouse on Terminal.app (assuming we can detect
> it).  It sounds like more people could bump into this tricky issue,
> and relying on all of them read NEWS is too optimistic.
>
> What are the downsides of turning this off for Terminal.app?  That's
> what Emacs before 31 had, so it cannot be too bad.

In my last reply to the OP I wrote 

  Mouse support by default is an important feature, IMO. It makes the menu
  bar usable, or in a future Emacs containing tty child frames tooltips
  can be shown. Not to mention setting point and what else.

  What's the positive effect of turning mouse support off by default?
  Command-C works for users who haven't set up terminal Emacs well enough
  that they could use M-w, plus in addition don't know Terminal.app well
  enough to know about Command-R or Fn + mouse.