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

> From: Philip Kaludercic <[email protected]>
> Cc: Eli Zaretskii <[email protected]>,  [email protected],
>   [email protected],  [email protected],  [email protected],
>   [email protected],  Sean Whitton <[email protected]>
> Date: Sun, 16 Aug 2026 17:27:57 +0000
> 
> Jared Finder <[email protected]> writes:
> 
> > On 2026-08-15 23:21, Philip Kaludercic wrote:
> >> Jared Finder <[email protected]> writes:
> >>> On 2026-08-15 10:11, Philip Kaludercic wrote:
> >>>> Jared Finder <[email protected]> writes:
> >>>>> On 2026-08-15 07:13, Philip Kaludercic wrote:
> >>>>>> Jared Finder <[email protected]> writes:
> >>>>>> [...]
> >>>>>> 
> >>>>>>> +(defconst xterm--auto-xt-mouse-allowed-names
> >>>>>>> +  (mapconcat (lambda (s) (concat "^" s "\\>"))
> >>>>>>> +             '("Konsole"
> >>>>>>> +               "WezTerm"
> >>>>>>> +               ;; "XTerm"   ;Disabled because OSC52 support is
> >>>>>>> opt-in only.
> >>>>>>> +               "iTerm2"     ;OSC52 support has opt-in/out UI on
> >>>>>>> first usage
> >>>>>>> +               "kitty")
> >>>>>>> +             "\\|")
> >>>>>>> +  "Regexp for terminals that automatically enable
> >>>>>>> `xterm-mouse-mode' at startup.
> >>>>>>> +This will get matched against the terminal's XTVERSION string.
> >>>>>> Would it be possible to add VTE
> >>>>>> (https://gitlab.gnome.org/GNOME/vte)
> >>>>>> to
> >>>>>> this list, to support GNOME's terminal and other terminal emulators
> >>>>>> that
> >>>>>> use the library (AFAIK that include XFCE's and MATE's terminal
> >>>>>> emulator).
> >>>>>> [...]
> >>>>> Don't modern versions of VTE now report OSC52 from a primary DA
> >>>>> query?
> >>>>> Try running "echo -e '\e[c'", is 52 in the returned list?
> >>>> No, it responds with
> >>> That's unfortunate.
> >>> What does the terminal return from an XTVERSION request?  That's
> >>> "echo
> >>> -e '\e[>0q'".  Assuming the string is unique enough, we can add it to
> >>> the list.
> >> Both GNOME Terminal, Console and XFCE4 terminal respond with:
> >>   :>|VTE(8001)^[\
> >
> > Great, adding "VTE" to the list of console names inside
> > xterm--auto-xt-mouse-allowed-names should be sufficient.  Can someone
> > with write access to the Emacs repo do that?  Ideally this is also
> > done on the 31 branch.
> 
> I can push the following patch to emacs31 if Sean and/or Eli are OK with
> it.  I have tested it with GNOME terminal and it does enable
> xterm-mouse-mode in emacs -Q -nw:

Fine by me, thanks.