Tom Willemse
5836a55f4c
This also happens to include changes to the font for Eshell as an experiment and setting the page delimiter so page navigation commands work on prompts.
198 lines
8.1 KiB
EmacsLisp
198 lines
8.1 KiB
EmacsLisp
;;; oni-eshell.el --- Eshell configuration -*- lexical-binding: t; -*-
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;; Copyright (C) 2019 Tom Willemse
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;; Author: Tom Willemse <tom@ryuslash.org>
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;; Keywords: local
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;; Version: 2023.0414.233822
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;; Package-Requires: (eshell-fringe-status esh-autosuggest xterm-color eshell-syntax-highlighting)
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;; This program is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with this program. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Eshell configuration.
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;;; Code:
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(require 'eshell)
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(require 'em-dirs)
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(require 'em-prompt)
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(require 'esh-autosuggest)
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(require 'xterm-color)
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(defun oni-eshell--C-d ()
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"Call `delete-char' or close the buffer if it fails."
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(interactive)
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(condition-case err
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(call-interactively #'delete-char)
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(error (if (and (eq (car err) 'end-of-buffer)
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(looking-back eshell-prompt-regexp nil))
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(kill-buffer)
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(signal (car err) (cdr err))))))
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(defun oni-eshell--enable-truncating-buffers ()
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"Add `eshell-truncate-buffer' to `eshell-output-filter-functions'."
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(add-to-list 'eshell-output-filter-functions 'eshell-truncate-buffer))
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(defun oni-eshell--enable-xterm-filter ()
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"Add ‘xterm-color-filter’ to ‘eshell-preoutput-filter-functions’."
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(add-to-list 'eshell-preoutput-filter-functions 'xterm-color-filter))
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(defun oni-eshell--disable-ansi-color-handling ()
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"Remove ‘eshell-handle-ansi-color’ from ‘eshell-output-filter-functions’."
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(setq eshell-output-filter-functions
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(remove 'eshell-handle-ansi-color eshell-output-filter-functions)))
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(defun oni-eshell--expand-keymap ()
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"Set `C-d' to quit eshell if used at end of prompt."
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(define-key eshell-mode-map (kbd "C-d") #'oni-eshell--C-d)
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(define-key eshell-mode-map (kbd "C-c b") #'oni-eshell-goto-buffer-directory))
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(defun oni-eshell--set-xterm-variables ()
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"Set ‘xterm-color-preserve-properties’ to t."
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(setq xterm-color-preserve-properties t))
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(defun oni-eshell-fix-esh-autosuggest-active-keymap ()
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"Set ‘company-posframe-active-map’ to ‘esh-autosuggest-active-map’."
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(setq-local company-posframe-active-map esh-autosuggest-active-map))
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(defun oni-eshell-goto-buffer-directory (buffer-name)
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"Change the current directory to the given BUFFER-NAME’s directory."
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(interactive
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(list (read-buffer "Switch to buffer’s directory: "
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nil t (lambda (buf)
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(let ((b (if (consp buf)
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(cdr buf)
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(get-buffer buf))))
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(buffer-file-name b))))))
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(eshell/cd (file-name-directory (buffer-file-name (get-buffer buffer-name))))
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(eshell-reset))
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(defun oni-eshell-disable-beacon-on-scroll ()
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"Disable ‘beacon-blink-when-window-scrolls’ in the current buffer."
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(setq-local beacon-blink-when-window-scrolls nil))
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(defun oni-eshell-change-font ()
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"Remap the default font to the one I use for terminals."
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(face-remap-add-relative 'default :family "Classic Console Neue"))
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(defun oni-eshell-set-page-delimiter ()
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"Change the page delimiter so that it matches the prompt for easy navigation."
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(setq-local page-delimiter eshell-prompt-regexp))
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(add-hook 'eshell-before-prompt-hook #'oni-eshell--set-xterm-variables)
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(add-hook 'eshell-first-time-mode-hook #'oni-eshell--expand-keymap)
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(add-hook 'eshell-load-hook #'oni-eshell--disable-ansi-color-handling)
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(add-hook 'eshell-load-hook #'oni-eshell--enable-truncating-buffers)
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(add-hook 'eshell-load-hook #'oni-eshell--enable-xterm-filter)
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(add-hook 'eshell-mode-hook #'oni-eshell-change-font)
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(add-hook 'eshell-mode-hook #'oni-eshell-disable-beacon-on-scroll)
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(add-hook 'eshell-mode-hook #'oni-eshell-set-page-delimiter)
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(add-hook 'eshell-mode-hook 'esh-autosuggest-mode)
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(add-hook 'eshell-mode-hook 'eshell-syntax-highlighting-mode)
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(add-hook 'eshell-mode-hook 'goto-address-mode)
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(add-hook 'esh-autosuggest-mode-hook #'oni-eshell-fix-esh-autosuggest-active-keymap)
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(when (display-graphic-p)
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(add-hook 'eshell-mode-hook 'eshell-fringe-status-mode))
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(setenv "TERM" "xterm-256color")
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(add-to-list 'display-buffer-alist
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'("\\`\\*eshell" display-buffer-at-bottom
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(side . bottom)
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(slot . 0)
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(window-height . 0.33)))
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;;; Eshell prompt
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(defun oni-eshell-shortest-unique-directory (current-path directory)
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"Find the shortest unique substring of DIRECTORY.
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DIRECTORY should be a directory that exists within CURRENT-PATH."
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(catch 'result
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(dotimes (i (length directory))
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(let* ((current-directory (substring directory 0 (1+ i)))
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(dir-rx (rx string-start
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(literal current-directory)
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(zero-or-more any)))
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(matches (directory-files current-path nil dir-rx)))
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(when (= (length matches) 1)
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(throw 'result current-directory))))))
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(defun oni-eshell-shorten-directory (directory)
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"Shorten DIRECTORY to the shortest unique names of each directory."
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(let ((current-path "/")
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(current-short-path "/")
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(home (concat (getenv "HOME") "/"))
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(components (string-split (expand-file-name directory) "/" t)))
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(dolist (dir components current-short-path)
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(let* ((shortened (propertize (oni-eshell-shortest-unique-directory current-path dir)
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'help-echo dir))
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(new-path (format "%s%s/" current-path dir))
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(new-short-path (if (string= new-path home)
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"~/"
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(format "%s%s/" current-short-path shortened))))
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(setq current-path new-path
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current-short-path new-short-path)))))
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(defun oni-eshell-show-perforce-info-p ()
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"Predicate to indicate whether or not powershell info should be shown."
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(locate-dominating-file "." ".p4config"))
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(defun oni-eshell-perforce-workspace ()
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"Function returning the current Perforce workspace."
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(car (map-elt (mapcar (lambda (str) (split-string str ": "))
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(split-string (shell-command-to-string "p4 info -s") "\n"))
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"Client name")))
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(defun oni-eshell-perforce-root ()
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"Function returning the root directory of the current Perforce workspace."
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(string-replace
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"\\"
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"/"
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(car (map-elt (mapcar (lambda (str) (split-string str ": "))
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(split-string (shell-command-to-string "p4 info") "\n"))
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"Client root"))))
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(defun oni-eshell-perforce-stream ()
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"Function returning the current Perforce stream."
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(string-trim-right (shell-command-to-string "p4 switch")))
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(defun oni-eshell-prompt-function ()
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"Construct a prompt string for Eshell."
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(let* ((perforcep (oni-eshell-show-perforce-info-p))
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(pwd (eshell/pwd))
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(dir (if perforcep
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(concat (propertize (oni-eshell-perforce-workspace)
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'face '((foreground-color . "#ca3cad90828e")))
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":"
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(let ((relative-path (string-remove-prefix (oni-eshell-perforce-root) pwd)))
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(if (string= relative-path "") "/" relative-path)))
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(oni-eshell-shorten-directory pwd)))
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(stream (if perforcep (concat " ("
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(propertize (oni-eshell-perforce-stream)
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'face '((foreground-color . "#90e4ca3c828e")))
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")")
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"")))
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(concat dir
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stream
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(if (= (user-uid) 0) " # " " $ "))))
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(setq eshell-prompt-function #'oni-eshell-prompt-function)
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(provide 'oni-eshell)
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;;; oni-eshell.el ends here
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