How to make a thread version of dired-do-copy

How to make a thread version of dired-do-copy

[Shuguang Sun]

Hi all,

I try to make a thread version of dired-do-copy as below

(defun foo-dired-do-copy ()
  (interactive)
  (make-thread #'dired-do-copy))

However, it doesn't works very well:
1. if ido-everywhere is t, then I can't input the target directory with
error
funcall-interactively: Symbol's value as variable is void: ido-require-match
funcall-interactively: Symbol's value as variable is void: ido-cur-item
funcall-interactively: Symbol's value as variable is void:
ido-pre-merge-state [3 times]

2. if disable ido-everywhere, it raised a GUI window (in Windows 7) to ask
the target directory instead of the minibuffer. How could I still use the
minibuffer to input the targe directory?


GNU Emacs 27.0.50 (build 2, x86_64-w64-mingw32) of 2018-06-04
Windows 7

Best Regards,
Shuguang

Re: How to make a thread version of dired-do-copy

[Eli Zaretskii]

> From: Shuguang Sun <shuguang@gmail.com>
> Date: Sun, 10 Jun 2018 16:07:50 +0800
> 
> I try to make a thread version of dired-do-copy as below
> 
> (defun foo-dired-do-copy ()
>   (interactive)
>   (make-thread #'dired-do-copy))

It makes little sense to run dired-do-copy in a separate thread,
because the primitive functions it invokes don't run asynchronously,
and therefore the new thread will not yield to the main thread.  The
result will be that the main thread will be suspended for the entire
time dired-do-copy runs, I think.  Which is not what you want.

> 2. if disable ido-everywhere, it raised a GUI window (in Windows 7) to ask
> the target directory instead of the minibuffer. How could I still use the
> minibuffer to input the targe directory?

Ask the user for the directory before starting the thread, then wrap
dired-do-copy in a function which fetches the directory input by the
user from some variable.

Re: How to make a thread version of dired-do-copy

[Shuguang Sun]

Got it. Thanks.