605 lines
24 KiB
EmacsLisp
605 lines
24 KiB
EmacsLisp
;;; helm-ring.el --- kill-ring, mark-ring, and register browsers for helm. -*- lexical-binding: t -*-
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;; Copyright (C) 2012 ~ 2021 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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;;; Code:
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(require 'cl-lib)
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(require 'helm)
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(require 'helm-utils)
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(require 'helm-help)
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(require 'helm-elisp)
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(declare-function undo-tree-restore-state-from-register "ext:undo-tree.el" (register))
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(defgroup helm-ring nil
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"Ring related Applications and libraries for Helm."
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:group 'helm)
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(defcustom helm-kill-ring-threshold 3
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"Minimum length of a candidate to be listed by `helm-source-kill-ring'."
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:type 'integer
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:group 'helm-ring)
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(defcustom helm-kill-ring-max-offset 400
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"Max number of chars displayed per candidate in kill-ring browser.
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When `t', don't truncate candidate, show all.
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By default it is approximatively the number of bits contained in five lines
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of 80 chars each, i.e. 80*5.
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Note that if you set this to nil multiline will be disabled, i.e. you
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will not have separators between candidates any more."
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:type '(choice (const :tag "Disabled" t)
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(integer :tag "Max candidate offset"))
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:group 'helm-ring)
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(defcustom helm-kill-ring-actions
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'(("Yank marked" . helm-kill-ring-action-yank)
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("Delete marked" . helm-kill-ring-action-delete)
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("Search from candidate" . helm-kill-ring-search-from-string))
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"List of actions for kill ring source."
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:group 'helm-ring
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:type '(alist :key-type string :value-type function))
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(defcustom helm-kill-ring-separator "\n"
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"The separator used to separate marked candidates when yanking."
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:group 'helm-ring
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:type 'string)
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(defcustom helm-register-max-offset 160
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"Max size of string register entries before truncating."
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:group 'helm-ring
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:type 'integer)
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;;; Kill ring
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;;
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;;
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(defvar helm-kill-ring-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-y") 'helm-next-line)
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(define-key map (kbd "M-u") 'helm-previous-line)
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(define-key map (kbd "M-D") 'helm-kill-ring-delete)
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(define-key map (kbd "C-s") 'helm-kill-ring-run-search-from-string)
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(define-key map (kbd "C-]") 'helm-kill-ring-toggle-truncated)
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(define-key map (kbd "C-c C-k") 'helm-kill-ring-kill-selection)
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(define-key map (kbd "C-c d") 'helm-kill-ring-run-persistent-delete)
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map)
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"Keymap for `helm-show-kill-ring'.")
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(defvar helm-source-kill-ring
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(helm-build-sync-source "Kill Ring"
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:init (lambda ()
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(helm-set-attr 'last-command last-command)
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(helm-set-attr 'multiline helm-kill-ring-max-offset))
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:candidates #'helm-kill-ring-candidates
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:filtered-candidate-transformer #'helm-kill-ring-transformer
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:action 'helm-kill-ring-actions
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:persistent-action 'ignore
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:help-message 'helm-kill-ring-help-message
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:persistent-help "DoNothing"
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:keymap helm-kill-ring-map
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:migemo t
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:multiline 'helm-kill-ring-max-offset
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:group 'helm-ring)
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"Source for browse and insert contents of kill-ring.")
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(defun helm-kill-ring-candidates ()
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(cl-loop with cands = (helm-fast-remove-dups kill-ring :test 'equal)
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for kill in (if (eq (helm-get-attr 'last-command) 'yank)
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(cdr cands)
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cands)
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unless (or (< (length kill) helm-kill-ring-threshold)
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(string-match "\\`[\n[:blank:]]+\\'" kill))
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collect kill))
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(defun helm-kill-ring-transformer (candidates _source)
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"Ensure CANDIDATES are not read-only."
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(cl-loop for i in candidates
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when (get-text-property 0 'read-only i)
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do (set-text-properties 0 (length i) '(read-only nil) i)
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collect i))
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(defvar helm-kill-ring--truncated-flag nil)
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(defun helm-kill-ring-toggle-truncated ()
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"Toggle truncated view of candidates in helm kill-ring browser."
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(interactive)
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(with-helm-alive-p
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(setq helm-kill-ring--truncated-flag (not helm-kill-ring--truncated-flag))
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(let* ((cur-cand (helm-get-selection))
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(presel-fn (lambda ()
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(helm-kill-ring--preselect-fn cur-cand))))
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(helm-set-attr 'multiline
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(if helm-kill-ring--truncated-flag
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15000000
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helm-kill-ring-max-offset))
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(helm-update presel-fn))))
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(put 'helm-kill-ring-toggle-truncated 'helm-only t)
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(defun helm-kill-ring-kill-selection ()
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"Store the real value of candidate in kill-ring.
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Same as `helm-kill-selection-and-quit' called with a prefix arg."
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(interactive)
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(helm-kill-selection-and-quit t))
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(put 'helm-kill-ring-kill-selection 'helm-only t)
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(defun helm-kill-ring--preselect-fn (candidate)
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"Internal, used to preselect CANDIDATE when toggling truncated view."
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;; Preselection by regexp may not work if candidate is huge, so walk
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;; the helm buffer until selection is on CANDIDATE.
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(helm-awhile (condition-case-unless-debug nil
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(and (not (helm-pos-header-line-p))
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(helm-get-selection))
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(error nil))
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(if (string= it candidate)
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(cl-return)
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(helm-next-line))))
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(defun helm-kill-ring-action-yank (_str)
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"Insert concatenated marked candidates in current-buffer.
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When two prefix args are given prompt to choose separator, otherwise
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use `helm-kill-ring-separator' as default."
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(let ((marked (helm-marked-candidates))
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(sep (if (equal helm-current-prefix-arg '(16))
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(read-string "Separator: ")
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helm-kill-ring-separator)))
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(helm-kill-ring-action-yank-1
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(cl-loop for c in (butlast marked)
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concat (concat c sep) into str
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finally return (concat str (car (last marked)))))))
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(defun helm-kill-ring-action-yank-1 (str)
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"Insert STR in `kill-ring' and set STR to the head.
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When called with a prefix arg, point and mark are exchanged
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without activating region.
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If this action is executed just after `yank', replace with STR as
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yanked string."
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(let ((yank-fn (lambda (&optional before yank-pop)
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(insert-for-yank str)
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;; Set the window start back where it was in
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;; the yank command, if possible.
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(when yank-pop
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(set-window-start (selected-window) yank-window-start t))
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(when (or (equal helm-current-prefix-arg '(4)) before)
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;; Same as exchange-point-and-mark but without
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;; activating region.
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(goto-char (prog1 (mark t)
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(set-marker (mark-marker)
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(point)
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helm-current-buffer)))))))
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;; Prevent inserting and saving highlighted items.
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(set-text-properties 0 (length str) nil str)
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(with-helm-current-buffer
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(unwind-protect
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(progn
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(setq kill-ring (delete str kill-ring))
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;; Adding a `delete-selection' property
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;; to `helm-kill-ring-action' is not working
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;; because `this-command' will be `helm-maybe-exit-minibuffer',
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;; so use this workaround (Bug#1520).
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(when (and (region-active-p) delete-selection-mode)
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(delete-region (region-beginning) (region-end)))
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(if (not (eq (helm-get-attr 'last-command helm-source-kill-ring) 'yank))
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(progn
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;; Ensure mark is at beginning of inserted text.
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(push-mark)
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;; When yanking in a helm minibuffer we need a small
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;; delay to detect the mark in previous minibuffer. [1]
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(run-with-timer 0.01 nil yank-fn))
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;; from `yank-pop'
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(let ((inhibit-read-only t)
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(before (< (point) (mark t))))
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(if before
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(funcall (or yank-undo-function 'delete-region) (point) (mark t))
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(funcall (or yank-undo-function 'delete-region) (mark t) (point)))
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(setq yank-undo-function nil)
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(set-marker (mark-marker) (point) helm-current-buffer)
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;; Same as [1] but use the same mark and point as in
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;; the initial yank according to BEFORE even if no
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;; prefix arg is given.
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(run-with-timer 0.01 nil yank-fn before 'pop))))
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(kill-new str)))))
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(define-obsolete-function-alias 'helm-kill-ring-action 'helm-kill-ring-action-yank "2.4.0")
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(defun helm-kill-ring-search-from-string (candidate)
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(let ((str (car (split-string candidate "\n"))))
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(helm-multi-occur-1
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(list (current-buffer))
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(regexp-quote (substring-no-properties str)))))
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(defun helm-kill-ring-run-search-from-string ()
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(interactive)
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(with-helm-alive-p
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(helm-exit-and-execute-action 'helm-kill-ring-search-from-string)))
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(put 'helm-kill-ring-run-search-from-string 'helm-only t)
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(defun helm-kill-ring-action-delete (_candidate)
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"Delete marked candidates from `kill-ring'."
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(cl-loop for c in (helm-marked-candidates)
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do (setq kill-ring
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(delete c kill-ring))))
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(defun helm-kill-ring-persistent-delete (_candidate)
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(unwind-protect
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(cl-loop for c in (helm-marked-candidates)
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do (progn
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(helm-preselect (format "^%s" (regexp-quote c)))
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(setq kill-ring (delete c kill-ring))
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(helm-delete-current-selection)
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(helm--remove-marked-and-update-mode-line c)))
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(with-helm-buffer
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(setq helm-marked-candidates nil
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helm-visible-mark-overlays nil))
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(helm-force-update (helm-aif (helm-get-selection nil t) (regexp-quote it)))))
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(defun helm-kill-ring-run-persistent-delete ()
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"Delete current candidate without quitting."
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(interactive)
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(with-helm-alive-p
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(helm-set-attr 'quick-delete '(helm-kill-ring-persistent-delete . never-split))
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(helm-execute-persistent-action 'quick-delete)))
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(put 'helm-kill-ring-run-persistent-delete 'helm-only t)
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(defun helm-kill-ring-delete ()
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"Delete marked candidates from `kill-ring'.
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This is a command for `helm-kill-ring-map'."
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(interactive)
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(with-helm-alive-p
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(helm-exit-and-execute-action 'helm-kill-ring-action-delete)))
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(put 'helm-kill-ring-delete 'helm-only t)
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;;;; <Mark ring>
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;; DO NOT use these sources with other sources use
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;; the commands `helm-mark-ring', `helm-global-mark-ring' or
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;; `helm-all-mark-rings' instead.
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(defun helm-mark-ring-line-string-at-pos (pos)
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"Return line string at position POS."
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(save-excursion
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(goto-char pos)
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(forward-line 0)
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(let ((line (car (split-string (thing-at-point 'line) "[\n\r]"))))
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(remove-text-properties 0 (length line) '(read-only) line)
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(if (string= "" line)
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"<EMPTY LINE>"
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line))))
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(defun helm-mark-ring-get-candidates ()
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(with-helm-current-buffer
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(cl-loop with marks = (if (mark t)
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(cons (mark-marker) mark-ring)
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mark-ring)
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for marker in marks
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with max-line-number = (line-number-at-pos (point-max))
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with width = (length (number-to-string max-line-number))
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for m = (format (concat "%" (number-to-string width) "d: %s")
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(line-number-at-pos marker)
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(helm-mark-ring-line-string-at-pos marker))
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unless (and recip (assoc m recip))
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collect (cons m marker) into recip
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finally return recip)))
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(defun helm-mark-ring-default-action (candidate)
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(let ((target (copy-marker candidate)))
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(helm-aif (marker-buffer candidate)
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(progn
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(switch-to-buffer it)
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(helm-log-run-hook 'helm-goto-line-before-hook)
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(helm-match-line-cleanup)
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(with-helm-current-buffer
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(unless helm-yank-point (setq helm-yank-point (point))))
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(helm-goto-char target)
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(helm-highlight-current-line))
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;; marker points to no buffer, no need to dereference it, just
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;; delete it.
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(setq mark-ring (delete target mark-ring))
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(error "Marker points to no buffer"))))
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(defvar helm-source-mark-ring
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(helm-build-sync-source "mark-ring"
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:candidates #'helm-mark-ring-get-candidates
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:action '(("Goto line" . helm-mark-ring-default-action))
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:persistent-help "Show this line"
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:group 'helm-ring))
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;;; Global-mark-ring
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(defvar helm-source-global-mark-ring
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(helm-build-sync-source "global-mark-ring"
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:candidates #'helm-global-mark-ring-get-candidates
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:action '(("Goto line" . helm-mark-ring-default-action))
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:persistent-help "Show this line"
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:group 'helm-ring))
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(defun helm-global-mark-ring-format-buffer (marker)
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(with-current-buffer (marker-buffer marker)
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(goto-char marker)
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(forward-line 0)
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(let ((line (pcase (thing-at-point 'line)
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((and line (pred stringp)
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(guard (not (string-match-p "\\`\n?\\'" line))))
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(car (split-string line "[\n\r]")))
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(_ "<EMPTY LINE>"))))
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(remove-text-properties 0 (length line) '(read-only) line)
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(format "%7d:%s: %s"
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(line-number-at-pos) (marker-buffer marker) line))))
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(defun helm-global-mark-ring-get-candidates ()
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(let ((marks global-mark-ring))
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(when marks
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(cl-loop for marker in marks
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for mb = (marker-buffer marker)
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for gm = (unless (or (string-match "^ " (format "%s" mb))
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(null mb))
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(helm-global-mark-ring-format-buffer marker))
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when (and gm (not (assoc gm recip)))
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collect (cons gm marker) into recip
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finally return recip))))
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;;;; <Register>
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;;; Insert from register
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(defvar helm-source-register
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(helm-build-sync-source "Registers"
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:candidates #'helm-register-candidates
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:action-transformer #'helm-register-action-transformer
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:persistent-help ""
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:multiline t
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:action '(("Delete Register(s)" .
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(lambda (_candidate)
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(cl-loop for candidate in (helm-marked-candidates)
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for register = (car candidate)
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do (setq register-alist
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(delq (assoc register register-alist)
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register-alist))))))
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:group 'helm-ring)
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"See (info \"(emacs)Registers\")")
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(defun helm-register-candidates ()
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"Collecting register contents and appropriate commands."
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(cl-loop for (char . rval) in register-alist
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for key = (single-key-description char)
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for e27 = (registerv-p rval)
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for val = (if e27 ; emacs-27
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(registerv-data rval)
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rval)
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for string-actions =
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(cond
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((numberp val)
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(list (int-to-string val)
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'insert-register
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'increment-register))
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((markerp val)
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(let ((buf (marker-buffer val)))
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(if (null buf)
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(list "a marker in no buffer")
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(list (concat
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"a buffer position:"
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(buffer-name buf)
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", position "
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(int-to-string (marker-position val)))
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'jump-to-register
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'insert-register))))
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((and (consp val) (window-configuration-p (car val)))
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(list "window configuration."
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'jump-to-register))
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((and (vectorp val)
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(fboundp 'undo-tree-register-data-p)
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(undo-tree-register-data-p (if e27 val (elt val 1))))
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(list
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"Undo-tree entry."
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'undo-tree-restore-state-from-register))
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((or (and (vectorp val) (eq 'registerv (aref val 0)))
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(and (consp val) (frame-configuration-p (car val))))
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(list "frame configuration."
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'jump-to-register))
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((and (consp val) (eq (car val) 'file))
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(list (concat "file:"
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(prin1-to-string (cdr val))
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".")
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'jump-to-register))
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((and (consp val) (eq (car val) 'file-query))
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(list (concat "file:a file-query reference: file "
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(car (cdr val))
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", position "
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(int-to-string (car (cdr (cdr val))))
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".")
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'jump-to-register))
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((consp val)
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(let ((lines (format "%4d" (length val))))
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(list (format "%s: %s\n" lines
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(truncate-string-to-width
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(mapconcat 'identity (list (car val))
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"^J")
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(- (window-width) 15)))
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'insert-register)))
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((stringp val)
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(list
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(concat (substring-no-properties
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val 0 (min (length val) helm-register-max-offset))
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(if (> (length val) helm-register-max-offset)
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"[...]" ""))
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'insert-register
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'kill-new
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'append-to-register
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'prepend-to-register)))
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unless (null string-actions) ; Fix Bug#1107.
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collect (cons (format "Register %3s:\n %s" key (car string-actions))
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(cons char (cdr string-actions)))))
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(defun helm-register-action-transformer (actions register-and-functions)
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"Decide actions by the contents of register."
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(cl-loop with func-actions =
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'((insert-register
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"Insert Register" .
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(lambda (c) (insert-register (car c))))
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(kill-new
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"Kill Register" .
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(lambda (c) (with-temp-buffer
|
||
(insert-register (car c))
|
||
(kill-new (buffer-string)))))
|
||
(jump-to-register
|
||
"Jump to Register" .
|
||
(lambda (c) (jump-to-register (car c))))
|
||
(append-to-register
|
||
"Append Region to Register" .
|
||
(lambda (c) (append-to-register
|
||
(car c) (region-beginning) (region-end))))
|
||
(prepend-to-register
|
||
"Prepend Region to Register" .
|
||
(lambda (c) (prepend-to-register
|
||
(car c) (region-beginning) (region-end))))
|
||
(increment-register
|
||
"Increment Prefix Arg to Register" .
|
||
(lambda (c) (increment-register
|
||
helm-current-prefix-arg (car c))))
|
||
(undo-tree-restore-state-from-register
|
||
"Restore Undo-tree register" .
|
||
(lambda (c) (and (fboundp 'undo-tree-restore-state-from-register)
|
||
(undo-tree-restore-state-from-register (car c))))))
|
||
for func in (cdr register-and-functions)
|
||
when (assq func func-actions)
|
||
collect (cdr it) into transformer-actions
|
||
finally return (append transformer-actions actions)))
|
||
|
||
;;;###autoload
|
||
(defun helm-mark-ring ()
|
||
"Preconfigured `helm' for `helm-source-mark-ring'."
|
||
(interactive)
|
||
(helm :sources 'helm-source-mark-ring
|
||
:resume 'noresume
|
||
:buffer "*helm mark*"))
|
||
|
||
;;;###autoload
|
||
(defun helm-global-mark-ring ()
|
||
"Preconfigured `helm' for `helm-source-global-mark-ring'."
|
||
(interactive)
|
||
(helm :sources 'helm-source-global-mark-ring
|
||
:resume 'noresume
|
||
:buffer "*helm global mark*"))
|
||
|
||
;;;###autoload
|
||
(defun helm-all-mark-rings ()
|
||
"Preconfigured `helm' for mark rings.
|
||
Source used are `helm-source-global-mark-ring' and
|
||
`helm-source-mark-ring'."
|
||
(interactive)
|
||
(helm :sources '(helm-source-mark-ring
|
||
helm-source-global-mark-ring)
|
||
:resume 'noresume
|
||
:buffer "*helm mark ring*"))
|
||
|
||
;;;###autoload
|
||
(defun helm-register ()
|
||
"Preconfigured `helm' for Emacs registers."
|
||
(interactive)
|
||
(helm :sources 'helm-source-register
|
||
:resume 'noresume
|
||
:buffer "*helm register*"))
|
||
|
||
;;;###autoload
|
||
(defun helm-show-kill-ring ()
|
||
"Preconfigured `helm' for `kill-ring'.
|
||
It is drop-in replacement of `yank-pop'.
|
||
|
||
First call open the kill-ring browser, next calls move to next line."
|
||
(interactive)
|
||
(setq helm-kill-ring--truncated-flag nil)
|
||
(let ((enable-recursive-minibuffers t))
|
||
(helm :sources helm-source-kill-ring
|
||
:buffer "*helm kill ring*"
|
||
:resume 'noresume
|
||
:allow-nest t)))
|
||
|
||
;;;###autoload
|
||
(defun helm-execute-kmacro ()
|
||
"Preconfigured helm for keyboard macros.
|
||
Define your macros with `f3' and `f4'.
|
||
See (info \"(emacs) Keyboard Macros\") for detailed infos.
|
||
This command is useful when used with persistent action."
|
||
(interactive)
|
||
(let ((helm-quit-if-no-candidate
|
||
(lambda () (message "No kbd macro has been defined"))))
|
||
(helm :sources
|
||
(helm-build-sync-source "Kmacro"
|
||
:candidates (lambda ()
|
||
(helm-fast-remove-dups
|
||
(cons (kmacro-ring-head)
|
||
kmacro-ring)
|
||
:test 'equal))
|
||
:multiline t
|
||
:candidate-transformer
|
||
(lambda (candidates)
|
||
(cl-loop for c in candidates collect
|
||
(propertize (help-key-description (car c) nil)
|
||
'helm-realvalue c)))
|
||
:persistent-help "Execute kmacro"
|
||
:help-message 'helm-kmacro-help-message
|
||
:action
|
||
(helm-make-actions
|
||
"Execute kmacro (`C-u <n>' to execute <n> times)"
|
||
'helm-kbd-macro-execute
|
||
"Concat marked macros"
|
||
'helm-kbd-macro-concat-macros
|
||
"Delete marked macros"
|
||
'helm-kbd-macro-delete-macro
|
||
"Edit marked macro"
|
||
'helm-kbd-macro-edit-macro)
|
||
:group 'helm-ring)
|
||
:buffer "*helm kmacro*")))
|
||
|
||
(defun helm-kbd-macro-execute (candidate)
|
||
;; Move candidate on top of list for next use.
|
||
(setq kmacro-ring (delete candidate kmacro-ring))
|
||
(kmacro-push-ring)
|
||
(kmacro-split-ring-element candidate)
|
||
(kmacro-exec-ring-item
|
||
candidate helm-current-prefix-arg))
|
||
|
||
(defun helm-kbd-macro-concat-macros (_candidate)
|
||
(let ((mkd (helm-marked-candidates)))
|
||
(when (cdr mkd)
|
||
(kmacro-push-ring)
|
||
(setq last-kbd-macro
|
||
(mapconcat 'identity
|
||
(cl-loop for km in mkd
|
||
if (vectorp km)
|
||
append (cl-loop for k across km collect
|
||
(key-description (vector k)))
|
||
into result
|
||
else collect (car km) into result
|
||
finally return result)
|
||
"")))))
|
||
|
||
(defun helm-kbd-macro-delete-macro (_candidate)
|
||
(let ((mkd (helm-marked-candidates)))
|
||
(kmacro-push-ring)
|
||
(cl-loop for km in mkd
|
||
do (setq kmacro-ring (delete km kmacro-ring)))
|
||
(kmacro-pop-ring1)))
|
||
|
||
(defun helm-kbd-macro-edit-macro (candidate)
|
||
(kmacro-push-ring)
|
||
(setq kmacro-ring (delete candidate kmacro-ring))
|
||
(kmacro-split-ring-element candidate)
|
||
(kmacro-edit-macro))
|
||
|
||
(provide 'helm-ring)
|
||
|
||
;;; helm-ring.el ends here
|