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#+title: Completion configuration using ivy, counsel and friends
* ivy
#+begin_src emacs-lisp
(use-package ivy
:ensure t
:demand t
:custom
((ivy-count-format "(%d/%d) ")
(ivy-do-completion-in-region t)
(ivy-height 20)
(ivy-re-builders-alist '((counsel-ag . ivy--regex)
(counsel-rg . ivy--regex)
(counsel-yank-pop . ivy--regex)
(swiper . ivy--regex)
(swiper-isearch . ivy--regex)
(t . ivy--regex-fuzzy)))
(ivy-use-virtual-buffers t)
(ivy-virtual-abbreviate 'abbreviate)
(ivy-wrap t))
:config
;; used by ivy--regex-fuzzy to order results
(use-package flx :ensure t)
;; Try C-o in the minibuffer
(use-package ivy-hydra
:after ivy
:ensure t
:init (setq ivy-read-action-function #'ivy-hydra-read-action))
(add-to-list 'ivy-initial-inputs-alist
'(gnus-summary-move-article . ""))
:bind (("C-R" . ivy-resume)
("C-x b" . ivy-switch-buffer)
("C-c v" . ivy-push-view)
("C-c V" . ivy-pop-view))
:diminish)
#+end_src
* counsel
#+begin_src emacs-lisp
(use-package counsel
:ensure t
:custom ((counsel-describe-function-function 'helpful-callable)
(counsel-describe-variable-function 'helpful-variable)
(counsel-find-file-at-point t)
(counsel-linux-app-format-function
#'counsel-linux-app-format-function-name-pretty)
(counsel-mode-override-describe-bindings nil)
(counsel-recentf-include-xdg-list t))
:config
:bind (("C-s" . swiper-isearch)
("C-S-s" . isearch-forward)
("M-x" . counsel-M-x)
("C-x f" . counsel-find-file)
("C-c k" . counsel-ag)
("C-c K" . counsel-rg)
("C-c l" . counsel-locate)
("C-c b" . counsel-git)
("C-c i" . counsel-imenu)
("C-c G" . counsel-search)
("s-r" . counsel-linux-app))
:diminish)
#+end_src
* counsel add-ons
*** recoll
#+BEGIN_SRC emacs-lisp
(use-package jao-recoll)
(use-package jao-counsel-recoll
:after counsel
:bind (("C-c R" . jao-counsel-recoll)))
#+END_SRC
*** notmuch
#+begin_src emacs-lisp
(use-package counsel-notmuch
:ensure t
:config (with-eval-after-load "gnus-group"
(define-key gnus-group-mode-map "Gg" 'counsel-notmuch)))
#+end_src
* ivy rich
#+begin_src emacs-lisp
(use-package ivy-rich
:after (ivy counsel)
:ensure t
:custom ((ivy-rich-path-style 'relative)
(ivy-rich-parse-remote-buffer nil)
(ivy-rich-parse-remote-file-path nil))
:config
(ivy-rich-modify-columns
'ivy-switch-buffer
'((ivy-rich-candidate (:width 80))
(ivy-rich-switch-buffer-indicators (:face jao-themes-f00))
(ivy-rich-switch-buffer-project (:width 15))
(ivy-rich-switch-buffer-major-mode (:width 15 :face jao-themes-f12)))))
#+end_src
* dap
#+begin_src emacs-lisp
(jao-load-path "dap")
(use-package dap
:demand t
:bind (("C-'" . dap-dap)))
#+end_src
*** prompter
#+begin_src emacs-lisp
(defun jao-dap--hide-help ()
(when-let ((w (get-buffer-window (help-buffer))))
(with-selected-window w (kill-buffer-and-window))))
(defun jao-dap--prompter (keymap)
(let ((display-buffer-alist '(("*Help*"
(display-buffer-at-bottom)
(window-parameters (mode-line-format . none))
(window-height . fit-window-to-buffer)))))
(let ((inhibit-message t))
(describe-keymap keymap))))
(defun jao-dap--prompter-done ()
(save-current-buffer (jao-dap--hide-help)))
(setq dap-prompter #'jao-dap--prompter)
(setq dap-prompter-done #'jao-dap--prompter-done)
#+end_src
*** minibuffer actions
#+begin_src emacs-lisp
(defun jao-dap--completion-metadata ()
(completion-metadata
(buffer-substring-no-properties (field-beginning) (point))
minibuffer-completion-table
minibuffer-completion-predicate))
(defun jao-dap--completion-category ()
(completion-metadata-get (jao-dap--completion-metadata) 'category))
(dap-define-keymap jao-dap-buffer-map
"Keymap for buffer actions."
("k" kill-buffer)
("b" switch-to-buffer)
("o" switch-to-buffer-other-window)
("z" bury-buffer)
("q" kill-buffer-and-window)
("=" ediff-buffers))
(dap-define-keymap espotify-item-keymap
"Actions for Spotify search results"
("a" espotify--play-album)
("h" espotify--show-info))
(defvar jao-dap--smaps
'((command . dap-command-map)
(espotify-search-item . espotify-item-keymap)
(function . dap-function-map)
(variable . dap-variable-map)
(face . dap-face-map)
(buffer . jao-dap-buffer-map)
(consult-buffer . jao-dap-buffer-map)))
(defun jao-dap-target-minibuffer-candidate ()
(when (minibuffer-window-active-p (selected-window))
(let ((cand (ivy-state-current ivy-last))
(cat (jao-dap--completion-category)))
(when-let (m (alist-get cat jao-dap--smaps))
(cons m cand)))))
(add-to-list 'dap-targets #'jao-dap-target-minibuffer-candidate)
#+end_src
*** url / video actions
#+begin_src emacs-lisp
(defvar jao-dap-video-url-rx
(format "^https?://\\(?:www\\.\\)?%s/.+"
(regexp-opt '("youtu.be"
"youtube.com"
"blip.tv"
"vimeo.com"
"infoq.com")
t))
"A regular expression matching URLs that point to video streams")
(defun jao-dap--play-video (player url)
(interactive "sURL: ")
(let ((cmd (format "%s %s" player (shell-quote-argument url))))
(start-process-shell-command player nil cmd)))
(defun jao-dap-mpv (&optional url)
"Play video stream with mpv"
(interactive "sURL: ")
(jao-dap--play-video "mpv" url))
(defun jao-dap-vlc (&optional url)
"Play video stream with vlc"
(interactive "sURL: ")
(jao-dap--play-video "vlc" url))
(defun jao-dap-target-w3m-url ()
(when-let (url (or (thing-at-point-url-at-point)
(w3m-anchor)
w3m-current-url))
(cons 'dap-url-map url)))
(defun jao-dap-kill (&optional x)
"Save to kill ring"
(interactive "s")
(kill-new x))
(define-key dap-url-map "f" #'browse-url-firefox)
(define-key dap-url-map "w" #'jao-dap-kill)
(define-key dap-url-map [return] #'browse-url)
(defun jao-dap-target-video-url ()
(when-let (url (jao-dap-target-w3m-url))
(when (string-match-p jao-dap-video-url-rx (cdr url))
(cons 'jao-dap-video-url-map (cdr url)))))
(dap-define-keymap jao-dap-video-url-map
"Actions on URLs pointing to remote video streams."
("v" jao-dap-vlc)
("m" jao-dap-mpv))
(add-to-list 'dap-targets #'jao-dap-target-w3m-url)
(add-to-list 'dap-targets #'jao-dap-target-video-url)
#+end_src
* startup
#+begin_src emacs-lisp
(ivy-mode 1)
(counsel-mode 1)
(ivy-rich-mode 1)
(ivy-rich-project-root-cache-mode 1)
#+end_src
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