249 lines
10 KiB
EmacsLisp
249 lines
10 KiB
EmacsLisp
;;; Helm
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;;; TODO: helm-ff should allow opening several marks externally, e.g. sxiv for
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;;; pics. See
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;;; https://github.com/emacs-helm/helm/wiki/Find-Files#open-files-externally.
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;;; What about the default program? It currently defaults to ~/.mailcap, which is
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;;; not so customizable. Would ranger's rifle be useful here? See
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;;; https://github.com/emacs-helm/helm/issues/1796. There is the `openwith' package.
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;;; TODO: Batch-open torrent files automatically. Add to mailcap? Same as
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;;; above, C-c C-x does not allow for opening several files at once.
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;;; TODO: helm-find in big folders sometimes leads bad results, like exact match
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;;; not appearing first. Better sorting?
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;;; TODO: Implement alternating-color multiline lists.
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;;; See https://github.com/emacs-helm/helm/issues/1790.
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;;; TODO: Impement helm-portage (currently helm-gentoo).
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;;; TODO: Implement helm-pacman.
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(when (require 'linum-relative nil t)
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(helm-linum-relative-mode 1))
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(when (require 'helm-descbinds nil t)
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(helm-descbinds-mode))
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(when (require 'wgrep-helm nil t)
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(setq wgrep-auto-save-buffer t
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wgrep-enable-key (kbd "C-x C-q")))
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(when (require 'helm-ls-git nil t)
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;; `helm-source-ls-git' must be defined manually.
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;; See https://github.com/emacs-helm/helm-ls-git/issues/34.
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(setq helm-source-ls-git
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(and (memq 'helm-source-ls-git helm-ls-git-default-sources)
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(helm-make-source "Git files" 'helm-ls-git-source
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:fuzzy-match helm-ls-git-fuzzy-match))))
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(helm-mode 1)
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;; (helm-autoresize-mode 1)
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(add-to-list 'helm-sources-using-default-as-input 'helm-source-man-pages)
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;;; This makes the copy and rename operations asynchronous.
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(dired-async-mode)
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;;; Generic configuration.
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(setq
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helm-follow-mode-persistent t
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helm-reuse-last-window-split-state t
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helm-display-header-line nil
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helm-findutils-search-full-path t
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helm-show-completion-use-special-display nil
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helm-completion-mode-string ""
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helm-dwim-target 'completion
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helm-apropos-fuzzy-match t
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helm-buffers-fuzzy-matching t
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helm-eshell-fuzzy-match t
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helm-imenu-fuzzy-match t
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helm-M-x-fuzzy-match t
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helm-recentf-fuzzy-match t
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;; https://github.com/emacs-helm/helm/issues/1910
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helm-buffers-end-truncated-string "…"
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helm-buffer-max-length 22
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helm-window-show-buffers-function 'helm-window-mosaic-fn
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helm-window-prefer-horizontal-split t)
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(defun helm-split-window-combined-fn (window)
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"Helm window splitting that combined most standard features.
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- With C-u, split inside. With C-u C-u, use same window.
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- Else use biggest other window when available.
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- Else split horizontally if width>height, vertically otherwise."
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(cond
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((or (minibufferp helm-current-buffer)
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(and
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(not (one-window-p t))
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(not (equal current-prefix-arg '(4)))
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(not (equal current-prefix-arg '(16)))))
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;; Find biggest window.
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(let (biggest (maxarea 0))
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(dolist (w (window-list))
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(unless (eq w (selected-window))
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(let ((area (* (window-pixel-width w) (window-pixel-height w))))
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(when (> area maxarea)
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(setq maxarea area
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biggest w)))))
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biggest))
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((equal current-prefix-arg '(16))
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;; Same window.
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(selected-window))
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(t
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;; If split inside or if unique window.
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(split-window (selected-window) nil
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(if (> (window-pixel-width) (window-pixel-height))
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'right
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'below)))))
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(setq helm-split-window-preferred-function 'helm-split-window-combined-fn)
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;;; From https://github.com/emacs-helm/helm/issues/362.
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;;; This is not perfect with evil mode as the cursor type is not right in the
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;;; header line and the evil cursor remains in the minibuffer.
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;;; https://emacs.stackexchange.com/questions/17058/change-cursor-type-in-helm-header-line#17097
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(setq helm-echo-input-in-header-line t)
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(defun helm-hide-minibuffer-maybe ()
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(when (with-helm-buffer helm-echo-input-in-header-line)
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(let ((ov (make-overlay (point-min) (point-max) nil nil t)))
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(overlay-put ov 'window (selected-window))
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(overlay-put ov 'face (let ((bg-color (face-background 'default nil)))
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`(:background ,bg-color :foreground ,bg-color)))
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(setq-local cursor-type nil))))
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(add-hook 'helm-minibuffer-set-up-hook 'helm-hide-minibuffer-maybe)
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;;; Add bindings to `helm-apropos`. TODO: Does not work most of the times.
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;;; https://github.com/emacs-helm/helm/issues/1140
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(defun helm-def-source--emacs-commands (&optional default)
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(helm-build-in-buffer-source "Commands"
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:init `(lambda ()
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(helm-apropos-init 'commandp ,default))
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:fuzzy-match helm-apropos-fuzzy-match
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:filtered-candidate-transformer (and (null helm-apropos-fuzzy-match)
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'helm-apropos-default-sort-fn)
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:candidate-transformer 'helm-M-x-transformer-1
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:nomark t
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:action '(("Describe Function" . helm-describe-function)
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("Find Function" . helm-find-function)
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("Info lookup" . helm-info-lookup-symbol))))
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;;; Make `helm-mini' almighty.
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(require 'helm-bookmark)
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(setq helm-mini-default-sources `(helm-source-buffers-list
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helm-source-recentf
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,(when (boundp 'helm-source-ls-git) 'helm-source-ls-git)
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helm-source-bookmarks
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helm-source-bookmark-set
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helm-source-buffer-not-found))
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;;; Eshell
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(defun helm/eshell-set-keys ()
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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-p") 'helm-eshell-history)
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(define-key eshell-mode-map (kbd "M-s") nil) ; Useless when we have 'helm-eshell-history.
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(define-key eshell-mode-map (kbd "M-s f") 'helm-eshell-prompts-all))
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(add-hook 'eshell-mode-hook 'helm/eshell-set-keys)
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;;; TODO: Use helm-ff history in helm file completion.
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;;; https://github.com/emacs-helm/helm/issues/1118
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;; (define-key helm-read-file-map (kbd "M-p") 'helm-ff-run-switch-to-history)
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;;; Do not exclude any files from 'git grep'.
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(setq helm-grep-git-grep-command "git --no-pager grep -n%cH --color=always --full-name -e %p -- %f")
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(defun helm-grep-git-or-ag (arg)
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"Run `helm-grep-do-git-grep' if possible; fallback to `helm-do-grep-ag' otherwise.
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Requires `call-process-to-string' from `functions'."
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(interactive "P")
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(require 'vc)
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(require 'functions)
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(if (and (vc-find-root default-directory ".git")
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(or arg (split-string (call-process-to-string "git" "ls-files" "-z") "\0" t)))
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(helm-grep-do-git-grep arg)
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(helm-do-grep-ag nil)))
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(defun helm-grep-git-all-or-ag ()
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"Run `helm-grep-do-git-grep' over all git files."
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(interactive)
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(helm-grep-do-git-grep t))
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(defun helm-mark-or-exchange-rect ()
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"Run `helm-all-mark-rings-before-mark-point' or `rectangle-exchange-point-and-mark' if in rectangle-mark-mode."
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(interactive)
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(if rectangle-mark-mode
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(rectangle-exchange-point-and-mark)
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(helm-all-mark-rings)))
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(global-set-key [remap execute-extended-command] 'helm-M-x)
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(global-set-key [remap find-file] 'helm-find-files)
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(global-set-key [remap occur] 'helm-occur)
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(global-set-key [remap list-buffers] 'helm-mini)
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;; (global-set-key [remap dabbrev-expand] 'helm-dabbrev)
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(global-set-key [remap yank-pop] 'helm-show-kill-ring)
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;;; Do not remap 'exchange-point-and-mark, Evil needs it in visual mode.
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(global-set-key (kbd "C-x C-x") 'helm-mark-or-exchange-rect)
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(global-set-key [remap apropos-command] 'helm-apropos)
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(global-set-key [remap query-replace-regexp] 'helm-regexp)
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(unless (boundp 'completion-in-region-function)
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(define-key lisp-interaction-mode-map [remap completion-at-point] 'helm-lisp-completion-at-point)
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(define-key emacs-lisp-mode-map [remap completion-at-point] 'helm-lisp-completion-at-point))
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(global-set-keys
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"C-x M-g" 'helm-grep-git-or-ag
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"C-x M-G" 'helm-do-grep-ag)
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;;; Use the M-s prefix just like `occur'.
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(define-key prog-mode-map (kbd "M-s f") 'helm-semantic-or-imenu)
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;;; The text-mode-map binding targets structured text modes like Markdown.
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(define-key text-mode-map (kbd "M-s f") 'helm-semantic-or-imenu)
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(with-eval-after-load 'org
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(define-key org-mode-map (kbd "M-s f") 'helm-org-in-buffer-headings))
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(set-face-attribute 'helm-source-header nil :inherit 'header-line :height 'unspecified :background 'unspecified :foreground 'unspecified)
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(set-face-background 'helm-selection "#4f4f4f")
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(set-face-background 'helm-visible-mark "#2f2f2f")
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(set-face-foreground 'helm-visible-mark nil)
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(set-face-foreground 'helm-match "red")
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(set-face-attribute 'helm-buffer-file nil :background 'unspecified :foreground "white" :weight 'normal)
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(set-face-attribute 'helm-buffer-directory nil :background 'unspecified :foreground "#1e90ff" :weight 'bold)
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(set-face-attribute 'helm-ff-directory nil :background 'unspecified :foreground 'unspecified :weight 'unspecified :inherit 'helm-buffer-directory)
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(set-face-attribute 'helm-ff-file nil :background 'unspecified :foreground 'unspecified :weight 'unspecified :inherit 'helm-buffer-file)
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(set-face-foreground 'helm-grep-finish "#00AA00")
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(setq helm-source-names-using-follow '("Occur" "Git-Grep" "AG" "mark-ring" "Org Headings"))
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;;; From https://www.reddit.com/r/emacs/comments/5q922h/removing_dot_files_in_helmfindfiles_menu/.
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(defun helm-skip-dots (old-func &rest args)
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"Skip . and .. initially in helm-find-files. First call OLD-FUNC with ARGS."
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(apply old-func args)
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(let ((sel (helm-get-selection)))
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(if (and (stringp sel) (string-match "/\\.$" sel))
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(helm-next-line 2)))
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(let ((sel (helm-get-selection))) ; if we reached .. move back
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(if (and (stringp sel) (string-match "/\\.\\.$" sel))
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(helm-previous-line 1))))
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(advice-add #'helm-preselect :around #'helm-skip-dots)
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(advice-add #'helm-ff-move-to-first-real-candidate :around #'helm-skip-dots)
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(with-eval-after-load 'desktop
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(add-to-list 'desktop-globals-to-save 'helm-ff-history))
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(helm-top-poll-mode)
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;;; Column indices might need some customizing. See `helm-top-command' and
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;;; https://github.com/emacs-helm/helm/issues/1586 and
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;;; https://github.com/emacs-helm/helm/issues/1909.
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;;; Fallback on 'find' if 'locate' is not available.
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(unless (executable-find "locate")
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(setq helm-locate-recursive-dirs-command "find %s -type d -regex .*%s.*$"))
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;;; Convenience.
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(defun helm-toggle-visible-mark-backwards (arg)
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(interactive "p")
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(helm-toggle-visible-mark (- arg)))
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(define-key helm-map (kbd "S-SPC") 'helm-toggle-visible-mark-backwards)
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(provide 'init-helm)
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