Re: X selection access in xterm (OSC 52)

[Philipp Stephani <p.stephani2@gmail.com>]

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Stefan Monnier <monnier@iro.umontreal.ca> schrieb am Fr., 13. März 2015 um
23:08 Uhr:

> >>> Indeed, sounds good.  Can someone prepare a patch for that feature?
> >> I'm on it.
>
> Thanks.  I don't see your name in copyright.list.  Did you sign the
> copyright paperwork yet?  If not, then please fill the form below and
> email it as instructed so the FSF can send you the relevant paperwork
> to sign.
>

I work for Google, so this should be covered by the general agreement
between Google and the FSF.


>
> > Taken from
> > https://github.com/chromium/hterm/blob/64b3819692526f41eb960f6c9444c2
> c58e658f79/etc/osc52.el.
>
> Can you figure out who are the authors of that file, so we can get their
> copyright cleared?
>

According to the GitHub commit log, rginda is the only contributor. He's
also a Googler and approved of the patch.


>
> > This is an xterm escape sequence to save text to the X clipboard.
> [...]
> > +  interprogramCut  -- if supported, Xterm saves yanked text to the X
> selection"
>
> Is it the "clipboard" or the "selection"?
>

It should probably be "X Window selection" because both the primary
selection and the clipboard can be accessed.


>
> > +  (setq interprogram-cut-function
> > +        (if (string-prefix-p "screen" (getenv "TERM"))
> > +            #'xterm--screen-interprogram-cut
> > +          #'xterm--interprogram-cut)))
>
> Please don't change interprogram-cut-function, since this breaks down if
> you use a single Emacs session with both GUI and text frames (and with
> potentially various different terminal kinds).
>
> Instead use gui-method-declare for gui-set-selection (new in Emacs-25).
>

Thanks, I'll modify the patch accordingly tomorrow.


>
> Also, do I understand it correctly, that this only handles transfers in
> one direction (i.e. pushing Emacs's selection to the X server, but not
> fetching the X server's selection for use in Emacs)?
>
>
>
Yes. IIUC pasting has always been supported, either via the slow path of
character-by-character insertion, or the bracketed paste functionality.

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