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Re: shell-command in Windows 7

From: John Mastro
Subject: Re: shell-command in Windows 7
Date: Fri, 14 Apr 2017 10:11:36 -0700

42 147 <> wrote:
> I've been using this code to create functions that open files / folders
> within Emacs in Windows 7:
> (defun open-buffer-path ()
> "Run explorer on the directory of the current buffer."
> (interactive)
> (shell-command (concat "explorer " (replace-regexp-in-string "/" "\\\\"
> (file-name-directory (buffer-file-name)) t t))))
> (defun firefox ()
>   (interactive)
>   (shell-command (concat "explorer " (replace-regexp-in-string "/" "\\\\"
> "E:\\Program Files\\Mozilla Firefox\\firefox.exe" t t))))
> This worked fine for a while. Then I erased one of my older OSes on a
> different partition and created an NTFS partition for extra Windows 7
> storage. This did not change the drive number of Windows 7 at all. But for
> some reason, after that repartitioning, the above code only works if I
> alternative between the two different directory string types. Thus if I had
> the above before, on system reboot, I have to replace it all with:
> (defun .emacs-open ()
> "Run explorer on the directory of the current buffer."
> (interactive)
> (shell-command (concat "explorer " (replace-regexp-in-string "/" "\\\\"
> "E:/Users/John/AppData/Roaming/" t t))))
> And vice-versa, otherwise Emacs is unable to open the file / directory I
> want, and just opens to the same default directory when I call each
> function.  I created a workaround in which I press F12 to alternate between
> the two load files (I put these settings in a dedicated .el), but I'm very
> curious why this happens, and ideally a workaround like this would not be
> necessary.

I think using (w32-shell-execute "open" ...) is the right way to do this
on Windows. Does the following work for you?

    (defun w32-open-file (file)
      (interactive "fOpen file: ")
      (w32-shell-execute "open" file))

    (defun firefox ()
      (w32-open-file "e:/Program Files/Mozilla Firefox/firefox.exe"))

    (defun open-buffer-directory (buffer)
       (if current-prefix-arg
           (read-buffer "Open buffer directory: " nil t)
         (list (current-buffer))))
      (with-current-buffer buffer
        (let ((file (buffer-file-name)))
          (if file
              (w32-open-file (file-name-directory file))
            (user-error "Buffer `%s' is not visiting a file" (buffer-name))))))

Hope that helps


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