x-selection-value slow with primary selection

x-selection-value slow with primary selection

[Allan Streib]

I use emacs 24.3 on OpenBSD-current. Yanking text from the Primary X
selection is very slow, often taking ~10 seconds.  Nothing unusual about
the selection, may be a few words or a couple of lines.

I have tried eval-ing (x-selection-value) and it shows the same delay.

However (x-selection-value-internal 'PRIMARY) is quick. No perceptible
delay.

That's about as far as I got, I'm not very familar with elisp. Is there
a solution?  Since I'm almost always wanting to get the primary
selection I think I could make my own function for
interprogram-paste-function as a workaround.

Thanks,

Allan

Re: x-selection-value slow with primary selection

[Peter Dyballa]

Am 08.10.2013 um 18:30 schrieb Allan Streib:

> I use emacs 24.3 on OpenBSD-current. Yanking text from the Primary X
> selection is very slow, often taking ~10 seconds.  Nothing unusual about
> the selection, may be a few words or a couple of lines.

Maybe there are two effects involved. Could be text properties are getting copied too. The second effect can be due to text encoding issues.

You could try to synchronise the text encoding issue. If GNU Emacs would use the same default encoding as the X server uses, then some time could be saved.

The other issue can be solved by telling the X server not to handle text properties – and/or setting this in GNU Emacs.


Sometimes I think that the delays I encounter are due to not enough memory, which would lead to swapping out some parts of the programmes involved.

--
Greetings

  Pete

Don't just do something, sit there.

Re: x-selection-value slow with primary selection

[Allan Streib]

Peter Dyballa <Peter_Dyballa@web.de> writes:

> Maybe there are two effects involved. Could be text properties are getting copied too. The second effect can be due to text encoding issues.
>
> You could try to synchronise the text encoding issue. If GNU Emacs would use the same default encoding as the X server uses, then some time could be saved.
>
> The other issue can be solved by telling the X server not to handle text properties – and/or setting this in GNU Emacs.

Interesting idea. Do you have any links to instructions on how to tell X
and/or Emacs to not handle text properties? I am not finding anything
with web searches.

I almost never want to copy/paste formatting, only the text, so I would
love to know how to configure this globally in X.

Allan

Re: x-selection-value slow with primary selection

[Damien Wyart]

* Allan Streib <astreib@indiana.edu> in gnu.emacs.help:
> Interesting idea. Do you have any links to instructions on how to tell
> X and/or Emacs to not handle text properties? I am not finding
> anything with web searches.

You can try:

  (setq yank-excluded-properties t)

-- 
DW

Re: x-selection-value slow with primary selection

[Allan Streib]

Damien Wyart <damien.wyart@free.fr> writes:

> You can try:
>
>   (setq yank-excluded-properties t)

Thanks. I tried that and found that it didn't make any real difference,
so it maybe isn't an issue of the text properties.

I looked at the code for the x-selection-value function, and found that
it is checking both the X Clipboard and the X Primary selection text,
and that this can be controlled by the x-select-enable-clipboard and
x-select-enable-primary variables. Since I almost always want to use the
Primary selection, I set this in my .emacs and have found great
improvement:

(setq
  x-select-enable-clipboard nil
  x-select-enable-primary t)

Allan