495 lines
20 KiB
EmacsLisp
495 lines
20 KiB
EmacsLisp
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;;; helm-eshell.el --- pcomplete and eshell completion for helm. -*- lexical-binding: t -*-
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;; Copyright (C) 2012 ~ 2023 Thierry Volpiatto
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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 <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;;
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;; Enable like this in .emacs:
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;; (add-hook 'eshell-mode-hook
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;; (lambda ()
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;; (eshell-cmpl-initialize)
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;; (define-key eshell-mode-map [remap eshell-pcomplete] 'helm-esh-pcomplete)
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;; (define-key eshell-mode-map (kbd "M-s f") 'helm-eshell-prompts-all)))
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;; (define-key eshell-mode-map (kbd "M-r") 'helm-eshell-history)))
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;;; Code:
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(require 'cl-lib)
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(require 'helm)
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(require 'helm-lib)
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(require 'helm-help)
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(require 'helm-elisp)
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(declare-function eshell-read-aliases-list "em-alias")
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(declare-function eshell-send-input "esh-mode" (&optional use-region queue-p no-newline))
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(declare-function eshell-bol "esh-mode")
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(declare-function eshell-parse-arguments "esh-arg" (beg end))
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(declare-function eshell-backward-argument "esh-mode" (&optional arg))
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(declare-function helm-quote-whitespace "helm-lib")
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(declare-function eshell-skip-prompt "em-prompt")
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(defvar eshell-special-chars-outside-quoting)
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(defgroup helm-eshell nil
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"Helm completion and history for Eshell."
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:group 'helm)
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(defcustom helm-eshell-fuzzy-match nil
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"Enable fuzzy matching in `helm-esh-pcomplete' when non-nil."
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:type 'boolean)
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(defvar helm-eshell-history-map
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(let ((map (make-sparse-keymap)))
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(set-keymap-parent map helm-map)
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(define-key map (kbd "M-p") #'helm-next-line)
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map)
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"Keymap for `helm-eshell-history'.")
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(defvar helm-esh-completion-map
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(let ((map (make-sparse-keymap)))
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(set-keymap-parent map helm-map)
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(define-key map (kbd "TAB") #'helm-next-line)
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map)
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"Keymap for `helm-esh-pcomplete'.")
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(defvar helm-eshell--quit-flag nil)
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;; Internal.
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(defvar helm-ec-target "")
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(defun helm-ec-insert (_candidate)
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"Replace text at point with CANDIDATE.
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The function that call this should set `helm-ec-target' to thing
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at point."
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(set (make-local-variable 'comint-file-name-quote-list)
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eshell-special-chars-outside-quoting)
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(let ((pt (point)))
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(when (and helm-ec-target
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(search-backward helm-ec-target nil t)
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(string= (buffer-substring (point) pt) helm-ec-target))
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(delete-region (point) pt)))
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(when (string-match "\\`\\*" helm-ec-target) (insert "*"))
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(let ((marked (helm-marked-candidates)))
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(prog1 t ;; Makes helm returns t on action.
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(insert
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(mapconcat
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(lambda (x)
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(cond ((string-match "\\`~/" helm-ec-target)
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;; Strip out the first escape char added by
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;; `comint-quote-filename' before "~" (Bug#1803).
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(substring (comint-quote-filename (abbreviate-file-name x)) 1))
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((string-match "\\`/" helm-ec-target)
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(comint-quote-filename x))
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(t
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(concat (and (string-match "\\`[.]/" helm-ec-target) "./")
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(comint-quote-filename
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(file-relative-name x))))))
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marked " ")
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(or (helm-aand (car (last marked))
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(string-match-p "/\\'" it)
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"")
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" ")))))
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(defun helm-esh-transformer (candidates _sources)
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(cl-loop
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for i in candidates
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collect
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(cond ((string-match "\\`~/?" helm-ec-target)
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(abbreviate-file-name i))
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((string-match "\\`/" helm-ec-target) i)
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(t
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(file-relative-name i)))
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into lst
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finally return (sort lst #'helm-generic-sort-fn)))
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(defclass helm-esh-source (helm-source-sync)
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((init :initform (lambda ()
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(setq pcomplete-current-completions nil
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pcomplete-last-completion-raw nil)
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;; Eshell-command add this hook in all minibuffers
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;; Remove it for the helm one. (Fixed in Emacs24)
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(remove-hook 'minibuffer-setup-hook 'eshell-mode)))
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(candidates :initform 'helm-esh-get-candidates)
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;(nomark :initform t)
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(persistent-action :initform 'ignore)
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(nohighlight :initform t)
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(filtered-candidate-transformer :initform #'helm-esh-transformer)
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(action :initform 'helm-ec-insert))
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"Helm class to define source for Eshell completion.")
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(defun helm-esh-get-candidates ()
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"Get candidates for Eshell completion using `pcomplete'."
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(catch 'pcompleted
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(with-helm-current-buffer
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(let* ((pcomplete-stub)
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pcomplete-seen pcomplete-norm-func
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pcomplete-args pcomplete-last pcomplete-index
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(pcomplete-autolist pcomplete-autolist)
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(pcomplete-suffix-list pcomplete-suffix-list)
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(table (pcomplete-completions))
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(entry (or (try-completion helm-pattern
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(pcomplete-entries))
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helm-pattern)))
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(cl-loop ;; expand entry too to be able to compare it with file-cand.
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with exp-entry = (and (stringp entry)
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(not (string= entry ""))
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(file-name-as-directory
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(expand-file-name entry default-directory)))
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with comps = (all-completions pcomplete-stub table)
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unless comps return (prog1 nil
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;; Don't add final space when
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;; there is no completion (Bug#1990).
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(setq helm-eshell--quit-flag t)
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(message "No completions of %s" pcomplete-stub))
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for i in comps
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;; Transform the relative names to abs names.
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for file-cand = (and exp-entry
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(if (file-remote-p i) i
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(expand-file-name
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i (file-name-directory
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(if (directory-name-p pcomplete-stub)
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entry
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(directory-file-name entry))))))
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;; Compare them to avoid dups.
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for file-entry-p = (and (stringp exp-entry)
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(stringp file-cand)
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;; Fix :/tmp/foo/ $ cd foo
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(not (file-directory-p file-cand))
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(file-equal-p exp-entry file-cand))
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if (and file-cand (or (file-remote-p file-cand)
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(file-exists-p file-cand))
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(not file-entry-p))
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collect file-cand into ls
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else
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;; Avoid adding entry here.
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unless file-entry-p collect i into ls
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finally return
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(if (and exp-entry
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(file-directory-p exp-entry)
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;; If the car of completion list is
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;; an executable, probably we are in
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;; command completion, so don't add a
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;; possible file related entry here.
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(and ls (not (executable-find (car ls))))
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;; Don't add entry if already in prompt.
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(not (file-equal-p exp-entry pcomplete-stub)))
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(append (list exp-entry)
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;; Entry should not be here now but double check.
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(remove entry ls))
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ls))))))
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;;; Eshell history.
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;;
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;;
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(defclass helm-eshell-history-source (helm-source-sync)
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((init :initform
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(lambda ()
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;; Same comment as in `helm-source-esh'.
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(remove-hook 'minibuffer-setup-hook 'eshell-mode)))
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(candidates
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:initform
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(lambda ()
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(with-helm-current-buffer
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(cl-loop for c from 0 to (ring-length eshell-history-ring)
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for elm = (eshell-get-history c)
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unless (and (member elm lst)
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eshell-hist-ignoredups)
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collect elm into lst
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finally return lst))))
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(nomark :initform t)
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(multiline :initform t)
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(keymap :initform 'helm-eshell-history-map)
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(candidate-number-limit :initform 9999)
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(action :initform (lambda (candidate)
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(eshell-kill-input)
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(insert candidate))))
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"Helm class to define source for Eshell history.")
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(defun helm-esh-pcomplete-input (target users-comp last)
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(if (and (stringp last)
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(not (string= last ""))
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(not users-comp)
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;; Fix completion on "../" see Bug#1832.
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(or (file-exists-p last)
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(helm-aand
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(file-name-directory last)
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(file-directory-p it))))
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(if (and (file-directory-p last)
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(string-match "\\`[~.]*.*/[.]\\'" target))
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;; Fix completion on "~/.", "~/[...]/.", and "../."
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(expand-file-name
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(concat (helm-basedir (file-name-as-directory last))
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(regexp-quote (helm-basename target))))
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(expand-file-name last))
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;; Don't add "~" to input to provide completion on all users instead of only
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;; on current $HOME (#1832).
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(unless users-comp last)))
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(defun helm-esh-pcomplete-default-source ()
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"Make and return the default source for Eshell completion."
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(helm-make-source "Eshell completions" 'helm-esh-source
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:fuzzy-match helm-eshell-fuzzy-match
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:keymap helm-esh-completion-map))
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(defvar helm-esh-pcomplete-build-source-fn #'helm-esh-pcomplete-default-source
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"Function that builds a source or a list of sources.")
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(defun helm-esh-pcomplete--make-helm (&optional input)
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(helm :sources (funcall helm-esh-pcomplete-build-source-fn)
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:buffer "*helm pcomplete*"
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:resume 'noresume
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:input input))
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;;;###autoload
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(defun helm-esh-pcomplete ()
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"Preconfigured `helm' to provide Helm completion in Eshell."
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(interactive)
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(let* ((helm-quit-if-no-candidate t)
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(helm-execute-action-at-once-if-one t)
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(end (point-marker))
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(beg (save-excursion (eshell-bol) (point)))
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(args (catch 'eshell-incomplete
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(eshell-parse-arguments beg end)))
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(target
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(or (and (looking-back " " (1- (point))) " ")
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(buffer-substring-no-properties
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(save-excursion
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(eshell-backward-argument 1) (point))
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end)))
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(users-comp (string= target "~"))
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(first (car args)) ; Maybe lisp delimiter "(".
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last ; Will be the last but parsed by pcomplete.
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del-space
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del-dot)
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(setq helm-ec-target (or target " ")
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end (point)
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;; Reset beg for `with-helm-show-completion'.
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beg (or (and target (not (string= target " "))
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(- end (length target)))
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;; Nothing at point.
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(progn (insert " ") (setq del-space t) (point))))
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(when (string-match "\\`[~.]*.*/[.]\\'" target)
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;; Fix completion on
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;; "~/.", "~/[...]/.", and "../."
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(delete-char -1) (setq del-dot t)
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(setq helm-ec-target (substring helm-ec-target 0 (1- (length helm-ec-target)))))
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(cond ((eq first ?\()
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(helm-lisp-completion-at-point))
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;; In eshell `pcomplete-parse-arguments' is called
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;; with `pcomplete-parse-arguments-function'
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;; locally bound to `eshell-complete-parse-arguments'
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;; which is calling `lisp-complete-symbol',
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;; calling it before would popup the
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;; *completions* buffer.
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(t (setq last (replace-regexp-in-string
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"\\`\\*" ""
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(car (last (ignore-errors
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(pcomplete-parse-arguments))))))
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;; Set helm-eshell--quit-flag to non-nil only on
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;; quit, this tells to not add final suffix when quitting
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;; helm.
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(add-hook 'helm-quit-hook #'helm-eshell--quit-hook-fn)
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(with-helm-show-completion beg end
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(unwind-protect
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(or (helm-esh-pcomplete--make-helm
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(helm-esh-pcomplete-input target users-comp last))
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;; Delete removed dot on quit
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(and del-dot (prog1 t (insert ".")))
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;; A space is needed to have completion, remove
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;; it when nothing found.
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(and del-space (looking-back "\\s-" (1- (point)))
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(delete-char -1))
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(if (and (null helm-eshell--quit-flag)
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(and (stringp last) (file-directory-p last))
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(looking-back "\\([.]\\{1,2\\}\\|[^/]\\)\\'"
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(1- (point))))
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(prog1 t (insert "/"))
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;; We need another flag for space here, but
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;; global to pass it to `helm-quit-hook', this
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;; space is added when point is just after
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;; previous completion and there is no
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;; more completion, see Bug#1832.
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(unless (or helm-eshell--quit-flag
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(looking-back "/\\'" (1- (point))))
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|||
|
|
(prog1 t (insert " ")))
|
|||
|
|
(when (and helm-eshell--quit-flag
|
|||
|
|
(string-match-p "[.]\\{2\\}\\'" last))
|
|||
|
|
(insert "/"))))
|
|||
|
|
(remove-hook 'helm-quit-hook #'helm-eshell--quit-hook-fn)
|
|||
|
|
(setq helm-eshell--quit-flag nil)))))))
|
|||
|
|
|
|||
|
|
(defun helm-eshell--quit-hook-fn ()
|
|||
|
|
(setq helm-eshell--quit-flag t))
|
|||
|
|
|
|||
|
|
;;;###autoload
|
|||
|
|
(defun helm-eshell-history ()
|
|||
|
|
"Preconfigured Helm for Eshell history."
|
|||
|
|
(interactive)
|
|||
|
|
(let* ((end (point))
|
|||
|
|
(beg (save-excursion (eshell-bol) (point)))
|
|||
|
|
(input (buffer-substring beg end))
|
|||
|
|
flag-empty)
|
|||
|
|
(when (eq beg end)
|
|||
|
|
(insert " ")
|
|||
|
|
(setq flag-empty t)
|
|||
|
|
(setq end (point)))
|
|||
|
|
(unwind-protect
|
|||
|
|
(with-helm-show-completion beg end
|
|||
|
|
(helm :sources (helm-make-source "Eshell history"
|
|||
|
|
'helm-eshell-history-source
|
|||
|
|
:fuzzy-match helm-eshell-fuzzy-match)
|
|||
|
|
:buffer "*helm eshell history*"
|
|||
|
|
:resume 'noresume
|
|||
|
|
:input input))
|
|||
|
|
(when (and flag-empty
|
|||
|
|
(looking-back " " (1- (point))))
|
|||
|
|
(delete-char -1)))))
|
|||
|
|
|
|||
|
|
|
|||
|
|
;;; Eshell prompts
|
|||
|
|
;;
|
|||
|
|
(defface helm-eshell-prompts-promptidx
|
|||
|
|
`((t ,@(and (>= emacs-major-version 27) '(:extend t))
|
|||
|
|
:foreground "cyan"))
|
|||
|
|
"Face used to highlight Eshell prompt index.")
|
|||
|
|
|
|||
|
|
(defface helm-eshell-prompts-buffer-name
|
|||
|
|
`((t ,@(and (>= emacs-major-version 27) '(:extend t))
|
|||
|
|
:foreground "green"))
|
|||
|
|
"Face used to highlight Eshell buffer name.")
|
|||
|
|
|
|||
|
|
(defcustom helm-eshell-prompts-promptidx-p t
|
|||
|
|
"Show prompt number."
|
|||
|
|
:type 'boolean)
|
|||
|
|
|
|||
|
|
(defvar helm-eshell-prompts-keymap
|
|||
|
|
(let ((map (make-sparse-keymap)))
|
|||
|
|
(set-keymap-parent map helm-map)
|
|||
|
|
(define-key map (kbd "C-c o") #'helm-eshell-prompts-other-window)
|
|||
|
|
(define-key map (kbd "C-c C-o") #'helm-eshell-prompts-other-frame)
|
|||
|
|
map)
|
|||
|
|
"Keymap for `helm-eshell-prompt-all'.")
|
|||
|
|
|
|||
|
|
(defvar eshell-prompt-regexp)
|
|||
|
|
(defvar eshell-highlight-prompt)
|
|||
|
|
|
|||
|
|
(defun helm-eshell-prompts-list (&optional buffer)
|
|||
|
|
"List the prompts in Eshell BUFFER.
|
|||
|
|
|
|||
|
|
Return a list of (\"prompt\" (point) (buffer-name) prompt-index))
|
|||
|
|
E.g. (\"ls\" 162 \"*eshell*\" 3).
|
|||
|
|
If BUFFER is nil, use current buffer."
|
|||
|
|
(with-current-buffer (or buffer (current-buffer))
|
|||
|
|
(when (eq major-mode 'eshell-mode)
|
|||
|
|
(save-excursion
|
|||
|
|
(goto-char (point-min))
|
|||
|
|
(let (result (count 1))
|
|||
|
|
(helm-awhile (re-search-forward eshell-prompt-regexp nil t)
|
|||
|
|
(when (or (and eshell-highlight-prompt
|
|||
|
|
(get-text-property (match-beginning 0) 'read-only))
|
|||
|
|
(null eshell-highlight-prompt))
|
|||
|
|
(push (list (buffer-substring-no-properties
|
|||
|
|
it (pos-eol))
|
|||
|
|
it (buffer-name) count)
|
|||
|
|
result)
|
|||
|
|
(setq count (1+ count))))
|
|||
|
|
(nreverse result))))))
|
|||
|
|
|
|||
|
|
(defun helm-eshell-prompts-list-all ()
|
|||
|
|
"List the prompts of all Eshell buffers.
|
|||
|
|
See `helm-eshell-prompts-list'."
|
|||
|
|
(cl-loop for b in (buffer-list)
|
|||
|
|
append (helm-eshell-prompts-list b)))
|
|||
|
|
|
|||
|
|
(defun helm-eshell-prompts-transformer (candidates &optional all)
|
|||
|
|
;; ("ls" 162 "*eshell*" 3) => ("*eshell*:3:ls" . ("ls" 162 "*eshell*" 3))
|
|||
|
|
(cl-loop for (prt pos buf id) in candidates
|
|||
|
|
collect `(,(concat
|
|||
|
|
(when all
|
|||
|
|
(concat (propertize
|
|||
|
|
buf
|
|||
|
|
'face 'helm-eshell-prompts-buffer-name)
|
|||
|
|
":"))
|
|||
|
|
(when helm-eshell-prompts-promptidx-p
|
|||
|
|
(concat (propertize
|
|||
|
|
(number-to-string id)
|
|||
|
|
'face 'helm-eshell-prompts-promptidx)
|
|||
|
|
":"))
|
|||
|
|
prt)
|
|||
|
|
. ,(list prt pos buf id))))
|
|||
|
|
|
|||
|
|
(defun helm-eshell-prompts-all-transformer (candidates)
|
|||
|
|
(helm-eshell-prompts-transformer candidates t))
|
|||
|
|
|
|||
|
|
(cl-defun helm-eshell-prompts-goto (candidate &optional (action 'switch-to-buffer))
|
|||
|
|
;; Candidate format: ("ls" 162 "*eshell*" 3)
|
|||
|
|
(let ((buf (nth 2 candidate)))
|
|||
|
|
(unless (and (string= (buffer-name) buf)
|
|||
|
|
(eq action 'switch-to-buffer))
|
|||
|
|
(funcall action buf))
|
|||
|
|
(goto-char (nth 1 candidate))
|
|||
|
|
(recenter)))
|
|||
|
|
|
|||
|
|
(defun helm-eshell-prompts-goto-other-window (candidate)
|
|||
|
|
(helm-eshell-prompts-goto candidate 'switch-to-buffer-other-window))
|
|||
|
|
|
|||
|
|
(defun helm-eshell-prompts-goto-other-frame (candidate)
|
|||
|
|
(helm-eshell-prompts-goto candidate 'switch-to-buffer-other-frame))
|
|||
|
|
|
|||
|
|
(helm-make-command-from-action helm-eshell-prompts-other-window
|
|||
|
|
"Switch to eshell prompt in other window."
|
|||
|
|
'helm-eshell-prompts-goto-other-window)
|
|||
|
|
|
|||
|
|
(helm-make-command-from-action helm-eshell-prompts-other-frame
|
|||
|
|
"Switch to eshell prompt in other frame."
|
|||
|
|
'helm-eshell-prompts-goto-other-frame)
|
|||
|
|
|
|||
|
|
;;;###autoload
|
|||
|
|
(defun helm-eshell-prompts ()
|
|||
|
|
"Pre-configured `helm' to browse the prompts of the current Eshell."
|
|||
|
|
(interactive)
|
|||
|
|
(if (eq major-mode 'eshell-mode)
|
|||
|
|
(helm :sources
|
|||
|
|
(helm-build-sync-source "Eshell prompts"
|
|||
|
|
:candidates (helm-eshell-prompts-list)
|
|||
|
|
:candidate-transformer 'helm-eshell-prompts-transformer
|
|||
|
|
:action '(("Go to prompt" . helm-eshell-prompts-goto)))
|
|||
|
|
:buffer "*helm Eshell prompts*")
|
|||
|
|
(message "Current buffer is not an Eshell buffer")))
|
|||
|
|
|
|||
|
|
;;;###autoload
|
|||
|
|
(defun helm-eshell-prompts-all ()
|
|||
|
|
"Pre-configured `helm' to browse the prompts of all Eshell sessions."
|
|||
|
|
(interactive)
|
|||
|
|
(helm :sources
|
|||
|
|
(helm-build-sync-source "All Eshell prompts"
|
|||
|
|
:candidates (helm-eshell-prompts-list-all)
|
|||
|
|
:candidate-transformer 'helm-eshell-prompts-all-transformer
|
|||
|
|
:action '(("Go to prompt" . helm-eshell-prompts-goto)
|
|||
|
|
("Go to prompt in other window `C-c o`" .
|
|||
|
|
helm-eshell-prompts-goto-other-window)
|
|||
|
|
("Go to prompt in other frame `C-c C-o`" .
|
|||
|
|
helm-eshell-prompts-goto-other-frame))
|
|||
|
|
:keymap helm-eshell-prompts-keymap)
|
|||
|
|
:buffer "*helm Eshell all prompts*"))
|
|||
|
|
|
|||
|
|
(provide 'helm-eshell)
|
|||
|
|
|
|||
|
|
;;; helm-eshell ends here
|