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;;; eshell-additions.el --- Some aliases for Eshell -*- lexical-binding: t; -*-
;; Copyright (C) 2024 Aryadev Chavali
;; Author: Aryadev Chavali <aryadev@aryadevchavali.com>
;; Keywords:
;; This program is free software; you can redistribute it and/or
;; modify it under the terms of the GNU General Public License Version
;; 2 as published by the Free Software Foundation.
;; 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:
;;
;;; Code:
(autoload #'eshell/cd "eshell")
(autoload #'eshell/echo "eshell")
(autoload #'eshell/send-input "eshell")
;; Aliases
(defun eshell/goto (&rest args)
"Use `read-directory-name' to change directories"
(let* ((name (read-file-name "Choose file: "))
(dir (file-name-directory name)))
(eshell/cd (list dir))
(if (not (file-directory-p name))
(find-file name))))
(defun eshell/project-root (&rest args)
"Change to directory `project-root'"
(if (project-current)
(eshell/cd (list (project-root (project-current))))
(let ((error-msg (propertize "Error" 'font-lock-face
'(:foreground "red"))))
(eshell/echo
(format "[%s]: No project in current directory" error-msg)))))
(defun eshell/sudo-switch (&rest args)
"Switch to a tramp connection sudo in the current directory"
(let ((wrapped-dir (concat "/sudo::" default-directory)))
(eshell/cd wrapped-dir)))
;; Additional functions
(defun +eshell/at-cwd ()
"Open an instance of eshell at the current working directory."
(interactive)
(let ((dir (if buffer-file-name
(file-name-directory buffer-file-name)
default-directory))
(buf (eshell)))
(with-current-buffer buf
(eshell/cd dir)
(eshell-send-input))))
(defun +eshell/--current-instances ()
(cl-loop for buffer being the buffers
if (with-current-buffer buffer
(eq major-mode 'eshell-mode))
collect
(cons (buffer-name buffer) buffer)))
(defun +eshell/open (&optional ARG)
"If no arg is given, run EShell as per usual.
If an arg is given, then interactively open a new Eshell instance
or a currently opened one, naming it in the process."
(interactive "P")
(if (null ARG)
(eshell)
(let* ((current-instances (+eshell/--current-instances))
(answer (completing-read "Enter name: " (mapcar #'car current-instances)))
(result (assoc answer current-instances)))
(cond
(result (switch-to-buffer (cdr result)))
((not (string= answer ""))
(let ((eshell-buffer-name (format "*%s-eshell*" answer)))
(eshell t)))
(t
(eshell))))))
(provide 'eshell-additions)
;;; eshell-additions.el ends here
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