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+;;; evil-collection-eshell.el --- Evil bindings for Eshell -*- lexical-binding: t -*-
+
+;; Copyright (C) 2017 Pierre Neidhardt
+
+;; Author: Pierre Neidhardt <ambrevar@gmail.com>
+;; Maintainer: James Nguyen <james@jojojames.com>
+;; Pierre Neidhardt <ambrevar@gmail.com>
+;; URL: https://github.com/jojojames/evil-collection
+;; Version: 0.0.1
+;; Package-Requires: ((emacs "25.1"))
+;; Keywords: evil, eshell, tools
+
+;; This file 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, or (at your
+;; option) any later version.
+;;
+;; This file 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.
+;;
+;; For a full copy of the GNU General Public License
+;; see <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+;; Evil bindings for EMMS
+
+;;; Code:
+(require 'em-prompt)
+(require 'eshell)
+(require 'evil)
+
+(defun evil-collection-eshell-next-prompt ()
+  "`evil' wrapper around `eshell-next-prompt'."
+  (when (get-text-property (point) 'read-only)
+    ;; If at end of prompt, `eshell-next-prompt' will not move, so go backward.
+    (beginning-of-line)
+    (eshell-next-prompt 1)))
+
+(defun evil-collection-eshell-next-prompt-on-insert ()
+  "Go to next prompt on `evil' replace/insert enter."
+  (dolist (hook '(evil-replace-state-entry-hook evil-insert-state-entry-hook))
+    (add-hook hook 'evil-eshell-next-prompt nil t)))
+
+(defun evil-collection-eshell-interrupt-process ()
+  "Interupt `eshell' process and enter insert state."
+  (interactive)
+  (eshell-interrupt-process)
+  (evil-insert 1))
+
+;;; `eshell-mode-map' is reset when Eshell is initialized in `eshell-mode'. We
+;;; need to add bindings to `eshell-first-time-mode-hook'.
+(defun evil-collection-eshell-setup-keys ()
+  "Set up `evil' bindings for `eshell'."
+  (evil-define-key 'normal eshell-mode-map
+    ;; motion
+    "[" 'eshell-previous-prompt
+    "]" 'eshell-next-prompt
+    (kbd "C-k") 'eshell-previous-prompt
+    (kbd "C-j") 'eshell-next-prompt
+    "gk" 'eshell-previous-prompt
+    "gj" 'eshell-next-prompt
+    "0" 'eshell-bol
+    "^" 'eshell-bol
+    (kbd "M-h") 'eshell-backward-argument
+    (kbd "M-l") 'eshell-forward-argument
+
+    (kbd "<return>") 'eshell-send-input
+    (kbd "C-c C-c") 'evil-collection-eshell-interrupt-process)
+  (evil-define-key 'insert eshell-mode-map
+    ;; motion
+    (kbd "M-h") 'eshell-backward-argument
+    (kbd "M-l") 'eshell-forward-argument)
+  (evil-define-key 'visual eshell-mode-map
+    ;; motion
+    ;; TODO: This does not work with `evil-visual-line'.
+    "[" 'eshell-previous-prompt
+    "]" 'eshell-next-prompt
+    (kbd "C-k") 'eshell-previous-prompt
+    (kbd "C-j") 'eshell-next-prompt
+    "gk" 'eshell-previous-prompt
+    "gj" 'eshell-next-prompt
+    "0" 'eshell-bol
+    "^" 'eshell-bol))
+
+;; TODO: Compare this setup procedure with evil-ediff.
+(defun evil-collection-eshell-setup ()
+  "Set up `evil' bindings for `eshell'."
+  (add-hook 'eshell-mode-hook 'evil-collection-eshell-next-prompt-on-insert)
+  (add-hook 'eshell-first-time-mode-hook 'evil-collection-eshell-setup-keys))
+
+(provide 'evil-collection-eshell)
+;;; evil-collection-eshell.el ends here