Subject: bug#22679: 25.0.91; ibuffer-do-shell-command-pipe truncate output

From: Stefan Monnier <[email-masked]>
Date: Fri, 19 Aug 2016 09:52:09 -0400

> -   :modifier-p nil)
> -  (shell-command-on-region
> -   (point-min) (point-max) command))
> +   :modifier-p nil
> +   :opstring "Shell command executed on"
> +   :modifier-p nil
> +   :before (funcall #'ibuffer--before-shell-command)
> +   :after (funcall #'ibuffer--after-shell-command))
> +  (let ((out-buf (get-buffer "*Shell Command Output*")))
> +    (with-current-buffer out-buf (goto-char (point-max)))
> +    (call-process-region (point-min) (point-max) command nil out-buf)))

I haven't looked at the rest of your patch but this part looks wrong:
the docstring indicates that `command' is expected to be a shell command
whereas call-process-region expects an executable.

        Stefan