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;;; oni-eshell.el --- Eshell configuration -*- lexical-binding: t; -*-
;; Copyright (C) 2019 Tom Willemse
;; Author: Tom Willemse <tom@ryuslash.org>
;; Keywords: local
;; Version: 2021.1123.002814
;; Package-Requires: (eshell-fringe-status esh-autosuggest xterm-color eshell-syntax-highlighting)
;; This program 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.
;; This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; Eshell configuration.
;;; Code:
(require 'eshell)
(require 'em-dirs)
(require 'em-prompt)
(require 'esh-autosuggest)
(require 'xterm-color)
(defun oni-eshell--C-d ()
"Call `delete-char' or close the buffer if it fails."
(interactive)
(condition-case err
(call-interactively #'delete-char)
(error (if (and (eq (car err) 'end-of-buffer)
(looking-back eshell-prompt-regexp nil))
(kill-buffer)
(signal (car err) (cdr err))))))
(defun oni-eshell--enable-truncating-buffers ()
"Add `eshell-truncate-buffer' to `eshell-output-filter-functions'."
(add-to-list 'eshell-output-filter-functions 'eshell-truncate-buffer))
(defun oni-eshell--enable-xterm-filter ()
"Add ‘xterm-color-filter’ to ‘eshell-preoutput-filter-functions’."
(add-to-list 'eshell-preoutput-filter-functions 'xterm-color-filter))
(defun oni-eshell--disable-ansi-color-handling ()
"Remove ‘eshell-handle-ansi-color’ from ‘eshell-output-filter-functions’."
(setq eshell-output-filter-functions
(remove 'eshell-handle-ansi-color eshell-output-filter-functions)))
(defun oni-eshell--expand-keymap ()
"Set `C-d' to quit eshell if used at end of prompt."
(define-key eshell-mode-map (kbd "C-d") #'oni-eshell--C-d)
(define-key eshell-mode-map (kbd "C-c b") #'oni-eshell-goto-buffer-directory))
(defun oni-eshell--set-xterm-variables ()
"Set ‘xterm-color-preserve-properties’ to t."
(setq xterm-color-preserve-properties t))
(defun oni-eshell-fix-esh-autosuggest-active-keymap ()
"Set ‘company-posframe-active-map’ to ‘esh-autosuggest-active-map’."
(setq-local company-posframe-active-map esh-autosuggest-active-map))
(defun oni-eshell-goto-buffer-directory (buffer-name)
"Change the current directory to the given BUFFER-NAME’s directory."
(interactive
(list (read-buffer "Switch to buffer’s directory: "
nil t (lambda (buf)
(let ((b (if (consp buf)
(cdr buf)
(get-buffer buf))))
(buffer-file-name b))))))
(eshell/cd (file-name-directory (buffer-file-name (get-buffer buffer-name))))
(eshell-reset))
(defun oni-eshell-shorten-directories (path)
"Shorten PATH to a list of unique shortened directory names."
(let* ((directories (split-string path "/" t))
(new-path
(string-join
(mapcar (lambda (d)
(let ((name (substring d 0 1))
(length 1))
(while (cl-find-if (lambda (s) (and (not (string= s d))
(string-prefix-p name s)))
directories)
(setq name (substring d 0 (cl-incf length))))
name))
directories) "/")))
(if (string-prefix-p "~" new-path)
new-path
(concat "/" new-path))))
(defun oni-eshell-disable-beacon-on-scroll ()
"Disable ‘beacon-blink-when-window-scrolls’ in the current buffer."
(setq-local beacon-blink-when-window-scrolls nil))
(add-hook 'eshell-before-prompt-hook #'oni-eshell--set-xterm-variables)
(add-hook 'eshell-first-time-mode-hook #'oni-eshell--expand-keymap)
(add-hook 'eshell-load-hook #'oni-eshell--disable-ansi-color-handling)
(add-hook 'eshell-load-hook #'oni-eshell--enable-truncating-buffers)
(add-hook 'eshell-load-hook #'oni-eshell--enable-xterm-filter)
(add-hook 'eshell-mode-hook #'oni-eshell-disable-beacon-on-scroll)
(add-hook 'eshell-mode-hook 'esh-autosuggest-mode)
(add-hook 'eshell-mode-hook 'eshell-syntax-highlighting-mode)
(add-hook 'eshell-mode-hook 'goto-address-mode)
(add-hook 'esh-autosuggest-mode-hook #'oni-eshell-fix-esh-autosuggest-active-keymap)
(when (display-graphic-p)
(add-hook 'eshell-mode-hook 'eshell-fringe-status-mode))
(setenv "TERM" "xterm-256color")
(add-to-list 'display-buffer-alist
'("\\`\\*eshell" display-buffer-in-side-window
(side . bottom)
(slot . 0)
(window-height . 0.33)))
(provide 'oni-eshell)
;;; oni-eshell.el ends here
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