changes highlighted by "garberw" (email william.garber (at) att.net ):  on line 111 of openwith.el:

{{{
        (when (save-match-data (string-match (car oa) file))
          (let ((params (mapcar (lambda (x) (if (eq x 'file) file x))
                                (nth 2 oa))))
            (when (or (not openwith-confirm-invocation)
                      (y-or-n-p (format "%s %s? " (cadr oa)
                                        (mapconcat #'identity params " "))))
              ;; garberw myprocess LINE 110 HERE
              (let ((myprocess (if (eq system-type 'windows-nt)
                                   (openwith-open-windows file)
                                 (openwith-open-unix (cadr oa) params)) ))
                (set-process-query-on-exit-flag myprocess nil)
                myprocess)
              (kill-buffer nil)
              (when (featurep 'recentf)
                (recentf-add-file file))
              ;; inhibit further actions
              (error "Opened %s in external program"
                     (file-name-nondirectory file))))))))
}}}

-- Anonymous 2020-08-12 15:27 UTC