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+;;; ol-eshell.el - Links to Working Directories in Eshell -*- lexical-binding: t; -*-
+
+;; Copyright (C) 2011-2019 Free Software Foundation, Inc.
+
+;; Author: Konrad Hinsen <konrad.hinsen AT fastmail.net>
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software: you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation, either version 3 of the License, or
+;; (at your option) any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;;; Code:
+
+(require 'eshell)
+(require 'esh-mode)
+(require 'ol)
+
+(declare-function eshell/pwd "em-dirs.el" (&rest args))
+
+(org-link-set-parameters "eshell"
+			 :follow #'org-eshell-open
+			 :store #'org-eshell-store-link)
+
+(defun org-eshell-open (link)
+  "Switch to an eshell buffer and execute a command line.
+   The link can be just a command line (executed in the default
+   eshell buffer) or a command line prefixed by a buffer name
+   followed by a colon."
+  (let* ((buffer-and-command
+          (if (string-match "\\([A-Za-z0-9+*-]+\\):\\(.*\\)" link)
+	      (list (match-string 1 link)
+		    (match-string 2 link))
+            (list eshell-buffer-name link)))
+         (eshell-buffer-name (car buffer-and-command))
+         (command (cadr buffer-and-command)))
+    (if (get-buffer eshell-buffer-name)
+	(pop-to-buffer-same-window eshell-buffer-name)
+      (eshell))
+    (goto-char (point-max))
+    (eshell-kill-input)
+    (insert command)
+    (eshell-send-input)))
+
+(defun org-eshell-store-link ()
+  "Store a link that, when opened, switches back to the current eshell buffer
+   and the current working directory."
+  (when (eq major-mode 'eshell-mode)
+    (let* ((command (concat "cd " (eshell/pwd)))
+           (link  (concat (buffer-name) ":" command)))
+      (org-link-store-props
+       :link (concat "eshell:" link)
+       :description command))))
+
+(provide 'ol-eshell)
+
+;;; ol-eshell.el ends here