From ece9d8ece8e98782460da79ab0f2cf428e8f815a Mon Sep 17 00:00:00 2001
From: Ravi R Kiran <aine.marina@gmail.com>
Date: Fri, 15 Apr 2022 19:44:44 -0500
Subject: Replace selectrum with vertico


diff --git a/init.el b/init.el
index 4909704..b558716 100644
--- a/init.el
+++ b/init.el
@@ -72,8 +72,10 @@
 (require 'diminish)
 (setq use-package-always-ensure t
       use-package-hook-name-suffix nil)
+;; (setq use-package-verbose t
+;;       use-package-compute-statistics t)
 
-(defvar ravi/use-selection-system 'selectrum
+(defvar ravi/use-selection-system 'vertico
   "Valid values are 'ido 'helm 'selectrum 'vertico")
 
 (when (file-exists-p (ravi/emacs-file "local.el"))
diff --git a/lisp/ravi-init-completion.el b/lisp/ravi-init-completion.el
index 95f49ca..2e548e8 100644
--- a/lisp/ravi-init-completion.el
+++ b/lisp/ravi-init-completion.el
@@ -34,10 +34,67 @@
 
 (use-package orderless
   :if (member ravi/use-selection-system '(selectrum vertico))
-  :custom (completion-styles '(orderless))
   :config
   (when (equal ravi/use-selection-system 'selectrum)
-    (setq orderless-skip-highlighting (lambda () selectrum-is-active))))
+    (setq completion-styles '(orderless))
+    (setq orderless-skip-highlighting (lambda () selectrum-is-active)))
+  (when (equal ravi/use-selection-system 'vertico)
+    ;; From the consult wiki: https://github.com/minad/consult/wiki
+    (defvar +orderless-dispatch-alist
+      '((?% . char-fold-to-regexp)
+        (?! . orderless-without-literal)
+        (?`. orderless-initialism)
+        (?= . orderless-literal)
+        (?~ . orderless-flex)))
+
+    ;; Recognizes the following patterns:
+    ;; * ~flex flex~
+    ;; * =literal literal=
+    ;; * %char-fold char-fold%
+    ;; * `initialism initialism`
+    ;; * !without-literal without-literal!
+    ;; * .ext (file extension)
+    ;; * regexp$ (regexp matching at end)
+    (defun +orderless-dispatch (pattern index _total)
+      (cond
+       ;; Ensure that $ works with Consult commands, which add disambiguation suffixes
+       ((string-suffix-p "$" pattern)
+        `(orderless-regexp . ,(concat (substring pattern 0 -1) "[\x200000-\x300000]*$")))
+       ;; File extensions
+       ((and
+         ;; Completing filename or eshell
+         (or minibuffer-completing-file-name
+             (derived-mode-p 'eshell-mode))
+         ;; File extension
+         (string-match-p "\\`\\.." pattern))
+        `(orderless-regexp . ,(concat "\\." (substring pattern 1) "[\x200000-\x300000]*$")))
+       ;; Ignore single !
+       ((string= "!" pattern) `(orderless-literal . ""))
+       ;; Prefix and suffix
+       ((if-let (x (assq (aref pattern 0) +orderless-dispatch-alist))
+            (cons (cdr x) (substring pattern 1))
+          (when-let (x (assq (aref pattern (1- (length pattern))) +orderless-dispatch-alist))
+            (cons (cdr x) (substring pattern 0 -1)))))))
+
+    ;; Define orderless style with initialism by default
+    (orderless-define-completion-style +orderless-with-initialism
+      (orderless-matching-styles '(orderless-initialism orderless-literal orderless-regexp)))
+    (setq completion-styles '(orderless basic)
+        completion-category-defaults nil
+        ;;; Enable partial-completion for files.
+        ;;; Either give orderless precedence or partial-completion.
+        ;;; Note that completion-category-overrides is not really an override,
+        ;;; but rather prepended to the default completion-styles.
+        ;; completion-category-overrides '((file (styles orderless partial-completion))) ;; orderless is tried first
+        completion-category-overrides '((file (styles partial-completion)) ;; partial-completion is tried first
+                                        ;; enable initialism by default for symbols
+                                        (command (styles +orderless-with-initialism))
+                                        (variable (styles +orderless-with-initialism))
+                                        (symbol (styles +orderless-with-initialism)))
+        orderless-component-separator #'orderless-escapable-split-on-space ;; allow escaping space with backslash!
+        orderless-style-dispatchers '(+orderless-dispatch))
+    )
+  )
 
 (use-package selectrum
   :if (equal ravi/use-selection-system 'selectrum)
@@ -67,7 +124,17 @@
 (use-package vertico
   :if (equal ravi/use-selection-system 'vertico)
   :init
-  (vertico-mode))
+  (vertico-mode)
+  :config
+  (bind-key [remap forward-list] 'vertico-next-group)
+  (bind-key [remap backward-list] 'vertico-previous-group)
+  (defun +vertico-crm-exit ()
+    (interactive)
+    (run-at-time 0 nil #'vertico-exit)
+    (funcall #'vertico-exit))
+  (with-eval-after-load "consult"
+   (define-key consult-crm-map "\r" #'+vertico-crm-exit)
+   (define-key consult-crm-map "\t" #'vertico-exit)))
 
 (defun ravi/bind-key-selection-system-map (key func)
   "Bind to appropriate minibuffer completion map"
-- 
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