146 lines
4.5 KiB
EmacsLisp
146 lines
4.5 KiB
EmacsLisp
;;; db-eshell --- Configuration for eshell -*- lexical-binding: t -*-
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;;; Commentary:
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;; Parts inspired by:
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;; - https://www.masteringemacs.org/article/complete-guide-mastering-eshell
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;; - https://github.com/howardabrams/dot-files/blob/master/emacs-eshell.org
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;;; Code:
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(require 'subr-x)
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(require 'seq)
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(require 'eshell)
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(require 'em-basic)
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(require 'em-dirs)
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(require 'em-hist)
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(autoload 'magit-status "magit")
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(autoload 'db/find-window-by-buffer-mode "db-utils")
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;; Various
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(defun db/run-or-hide-eshell (arg)
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"Opens an eshell buffer if not already in one, and otherwise
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returns to where we have been before."
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;; idea to split the current window is from
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;; http://howardism.org/Technical/Emacs/eshell-fun.html
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(interactive "P")
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(if (string= "eshell-mode" major-mode)
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;; bury buffer; reopen with current working directory if arg is given
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(progn
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(bury-buffer)
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(delete-window)
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(and arg (db/run-or-hide-eshell arg)))
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(if-let ((eshell-window (db/find-window-by-buffer-mode 'eshell-mode)))
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(select-window eshell-window)
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;; open eshell
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(let ((current-dir (expand-file-name default-directory))
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(height (/ (window-total-height) 3)))
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(split-window-vertically (- height))
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(other-window 1)
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(eshell 1)
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(when arg
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(end-of-line)
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(eshell-kill-input)
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(insert (format "cd '%s'" current-dir))
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(eshell-send-input))))))
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(defun eshell-clear-buffer ()
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"Clear terminal."
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(interactive)
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(let ((inhibit-read-only t))
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(erase-buffer)
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(eshell-send-input)))
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(defun eshell/default-prompt-function ()
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"A prompt for eshell of the form
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┌─[$USER@$HOST] [$PWD]
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└─
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"
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(let ((head-face '(:foreground "#859900")))
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(concat (propertize "┌─" 'face head-face)
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(user-login-name)
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"@"
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(system-name)
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" "
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(propertize (abbreviate-file-name (eshell/pwd))
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'face '(:foreground "#dc322f"))
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"\n"
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(propertize "└─" 'face head-face)
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(if (zerop (user-uid)) "#" "$")
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(propertize " " 'face '(:weight bold)))))
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(defun eshell/gst (&rest args)
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(magit-status (pop args) nil)
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(eshell/echo))
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(defun eshell-insert-history ()
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"Displays the eshell history to select and insert back into your eshell."
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;; directly taken from Howard Abrams
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(interactive)
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(insert (completing-read "Eshell history: "
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(seq-uniq (ring-elements eshell-history-ring)))))
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;; Git Completion
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;; https://tsdh.wordpress.com/2013/05/31/eshell-completion-for-git-bzr-and-hg/
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(defun pcmpl-git-commands ()
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"Return the most common git commands by parsing the git output."
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(with-temp-buffer
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(if (not (zerop (call-process "git" nil (current-buffer) nil "help" "--all")))
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(warn "Cannot call `git’ to obtain list of available commands; completion won’t be available.")
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(goto-char 0)
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(let (commands)
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(while (re-search-forward
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"^[[:blank:]]\\{3\\}\\([[:word:]-.]+\\)[[:blank:]]+"
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nil t)
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(push (match-string 1) commands))
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(sort commands #'string<)))))
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(defconst pcmpl-git-commands (pcmpl-git-commands)
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"List of `git' commands.")
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(defvar pcmpl-git-ref-list-cmd "git for-each-ref refs/ --format='%(refname)'"
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"The `git' command to run to get a list of refs.")
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(defun pcmpl-git-get-refs (type)
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"Return a list of `git' refs filtered by TYPE."
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(with-temp-buffer
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(insert (shell-command-to-string pcmpl-git-ref-list-cmd))
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(goto-char (point-min))
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(let (refs)
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(while (re-search-forward (concat "^refs/" type "/\\(.+\\)$") nil t)
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(push (match-string 1) refs))
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(nreverse refs))))
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(defun pcmpl-git-remotes ()
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"Return a list of remote repositories."
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(split-string (shell-command-to-string "git remote")))
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(defun pcomplete/git ()
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"Completion for `git'."
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;; Completion for the command argument.
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(pcomplete-here* pcmpl-git-commands)
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(cond
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((pcomplete-match "help" 1)
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(pcomplete-here* pcmpl-git-commands))
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((pcomplete-match (regexp-opt '("pull" "push")) 1)
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(pcomplete-here (pcmpl-git-remotes)))
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;; provide branch completion for the command `checkout'.
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((pcomplete-match (regexp-opt '("checkout" "co")) 1)
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(pcomplete-here* (append (pcmpl-git-get-refs "heads")
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(pcmpl-git-get-refs "tags"))))
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(t
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(while (pcomplete-here (pcomplete-entries))))))
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;; End
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(provide 'db-eshell)
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;;; db-eshell ends here
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