completion/ivy: add ivy-prescient #774

Better fuzzy support versus flx; hopefully faster. Also brings frecency
sorting to ivy commands.

modules/completion/ivy/config.el

@@ -220,6 +220,19 @@ immediately runs it on the current candidate (ending the ivy session)."
     (setf (alist-get fn ivy-display-functions-alist) #'ivy-display-function-fallback)))
 
 
+(def-package! ivy-prescient
+  :after ivy
+  :init
+  (if (featurep! +fuzzy)
+      (setq prescient-filter-method 'fuzzy)
+    (setq prescient-filter-method 'regexp
+          ivy-prescient-retain-classic-highlighting t))
+  :config
+  (setq prescient-save-file (concat doom-cache-dir "presclient-save.el"))
+  (prescient-persist-mode +1)
+  (ivy-prescient-mode +1))
+
+
 ;; Used by `counsel-M-x'
 (setq amx-save-file (concat doom-cache-dir "amx-items"))
 

modules/completion/ivy/packages.el

@@ -9,6 +9,7 @@
 (package! ivy-hydra)
 (package! ivy-rich)
 (package! wgrep)
+(package! ivy-prescient)
 
 (when (and EMACS26+ (featurep! +childframe))
   (package! ivy-posframe))