selectrum: add experimental vertico flag

modules/completion/selectrum/README.org

@@ -28,6 +28,7 @@ TODO
   instead of orderless.
 
 ** Plugins
+[[https://github.com/minad/vertico][vertico]] (~+vertico~, experimental for the moment)
 [[https://github.com/raxod502/selectrum][selectrum]]
 [[https://github.com/minad/consult][consult]]
 [[https://github.com/oantolin/embark/][embark]]

modules/completion/selectrum/TODO.org

@@ -66,7 +66,32 @@ Do we want to have the annotations be more like ivy? e.g.
 =:completion selectrum= is a bit of a misnomer. Selectrum is probably the
 most easily replaceable part of the module as it can replaced with Vertico
 fairly easily, other than losing the ~selectrum-repeat~ command. However,
-naming is hard™. Best alternative I can think of is =:completion modular=.
+naming is hard™. Best alternative I can think of is this:
+#+begin_src emacs-lisp
+:completion
+;...
+;ivy           ;; a search engine for love and life
+compleseus     ;; a search engine with all the planks replaced
+#+end_src
+** TODO Consider dropping Selectrum in favor of Vertico:
+To this end there is currently a ~+vertico~ flag to try it out, weird naming
+aside. I want to do this for a few reasons:
+*** Selectrum is more buggy
+Selectrum has a few longstanding bugs that don't exist in Vertico, namely: [[https://github.com/raxod502/selectrum/issues/491][491]]
+and [[https://github.com/raxod502/selectrum/issues/561][561]], as well as having worse handling when having lines of varying height
+(important for good icon support).
+*** Feature Comparison
+- Minad, Vertico's author, provides a detailed comparison [[https://github.com/hlissner/doom-emacs/pull/4664#issuecomment-871524782][here]]. I will note
+  however that I was seriously considering the switch before he wrote this
+  comparison due to the frustration of dealing with the rough edges.
+- Vertico doesn't support prescient, but I want to drop it anyway.
+- The [[https://github.com/raxod502/selectrum#vertico][feature comparison]] in the selectrum readme has been updated to better
+  reflect the current state of affairs. Both Vertico and Selectrum have some
+  features that the other package lacks. In my mind Vertico's features are more
+  useful, but the feature difference is small enough for it to be less important
+  than the bugginess imo.
+*** Vertico is more actively maintained
+This might be a temporary concern, but still.
 
 * PROJ HACKs to be addressed
 ** TODO ~fboundp~ issues

modules/completion/selectrum/autoload/selectrum.el

@@ -123,12 +123,24 @@ Supports exporting consult-grep to wgrep, file to wdeired, and consult-location
 (defun +selectrum/next-candidate-preview ()
   "Move to next candidate and preivew it"
   (interactive)
-  (selectrum-next-candidate)
+  (if (featurep! :completion selectrum +vertico)
+      (vertico-next)
+    (selectrum-next-candidate))
   (+selectrum/embark-preview))
 
 ;;;###autoload
 (defun +selectrum/previous-candidate-preview ()
   "Move to previous candidate and preview it"
   (interactive)
-  (selectrum-previous-candidate)
+  (if (featurep! :completion selectrum +vertico)
+      (vertico-previous)
+    (selectrum-previous-candidate))
   (+selectrum/embark-preview))
+
+;;;###autoload
+(defun +selectrum/repeat ()
+  "Repeat the last selectrum/vertico command."
+  (interactive)
+  (if (featurep! :completion selectrum +vertico)
+      (user-error "The vertico flag doesn't support repeating commands (yet)")
+    (selectrum-repeat)))

modules/completion/selectrum/config.el

@@ -1,6 +1,7 @@
 ;;; completion/selectrum/config.el -*- lexical-binding: t; -*-
 
 (use-package! selectrum
+  :when (not (featurep! +vertico))
   :hook (doom-first-input . selectrum-mode)
   :init
   (setq selectrum-extend-current-candidate-highlight t
@@ -12,6 +13,17 @@
   (map! :map selectrum-minibuffer-map
         [backspace] #'+selectrum/backward-updir))
 
+(use-package! vertico
+  :when (featurep! +vertico)
+  :hook (doom-first-input . vertico-mode)
+  :init
+  (setq vertico-resize nil
+        vertico-count 17
+        vertico-cycle t)
+  :config
+  (map! :map vertico-map
+        [backspace] #'+selectrum/backward-updir))
+
 (use-package! selectrum-prescient
   :when (featurep! +prescient)
   :hook (selectrum-mode . selectrum-prescient-mode)
@@ -41,11 +53,14 @@
   (setq completion-styles '(orderless)
         completion-category-defaults nil
         ;; note that despite override in the name orderless can still be used in find-file etc.
-        completion-category-overrides '((file (styles . (partial-completion))))
+        completion-category-overrides '((file (styles . (orderless partial-completion))))
         orderless-style-dispatchers '(+selectrum-orderless-dispatch)
-        orderless-component-separator "[ &]"
-        selectrum-refine-candidates-function #'orderless-filter
-        selectrum-highlight-candidates-function #'orderless-highlight-matches))
+        orderless-component-separator "[ &]")
+  ;; otherwise find-file gets different highlighting than other commands
+  (set-face-attribute 'completions-first-difference nil :inherit nil)
+  (unless (featurep! +vertico)
+    (setq selectrum-refine-candidates-function #'orderless-filter
+          selectrum-highlight-candidates-function #'orderless-highlight-matches)))
 
 (use-package! consult
   :defer t

modules/completion/selectrum/packages.el

@@ -1,7 +1,11 @@
 ;; -*- no-byte-compile: t; -*-
 ;;; completion/selectrum/packages.el
 
-(package! selectrum :pin "a19bbe94de492bf504399c093cfc5695eb630fa8")
+(if (featurep! +vertico)
+    (package! vertico
+      :recipe (:host github :repo "minad/vertico")
+      :pin "c9157759a015ac32cb299c18c84c6d5fb34e0aa1")
+  (package! selectrum :pin "a19bbe94de492bf504399c093cfc5695eb630fa8"))
 
 (if (featurep! +prescient)
     (package! selectrum-prescient :pin "4a0f5405798cfcb98ea005078ef2e2d490e922c4")

modules/config/default/+emacs-bindings.el

@@ -464,7 +464,7 @@
         "C-S-s"        #'swiper-helm
         "C-S-r"        #'helm-resume)
       (:when (featurep! :completion selectrum)
-        "C-S-r"        #'selectrum-repeat)
+        "C-S-r"        #'+selectrum/repeat)
 
       ;;; objed
       (:when (featurep! :editor objed +manual)

modules/config/default/+evil-bindings.el

@@ -204,6 +204,18 @@
         [C-return] #'helm-grep-run-other-window-action))
 
       (:when (featurep! :completion selectrum)
+       (:when (featurep! :completion selectrum +vertico)
+        (:after vertico
+         :map vertico-map
+         "M-RET" #'vertico-exit-input
+         "C-SPC" #'+selectrum/embark-preview
+         "C-j"   #'vertico-next
+         "C-M-j" #'+selectrum/next-candidate-preview
+         "C-S-j" #'vertico-next-group
+         "C-k"   #'vertico-previous
+         "C-M-k" #'+selectrum/previous-candidate-preview
+         "C-S-k" #'vertico-previous-group))
+       (:when (not (featurep! :completion selectrum +vertico))
         (:after selectrum
          :map selectrum-minibuffer-map
          "M-RET" #'selectrum-submit-exact-input
@@ -213,7 +225,8 @@
          "C-S-j" #'selectrum-next-page
          "C-k"   #'selectrum-previous-candidate
          "C-M-k" #'+selectrum/previous-candidate-preview
-        "C-S-k" #'selectrum-previous-page)))
+         "C-S-k" #'selectrum-previous-page))))
+
 
 ;;; :ui
 (map! (:when (featurep! :ui popup)
@@ -305,7 +318,7 @@
       :desc "Resume last search"    "'"
       (cond ((featurep! :completion ivy)        #'ivy-resume)
             ((featurep! :completion helm)       #'helm-resume)
-            ((featurep! :completion selectrum)  #'selectrum-repeat))
+            ((featurep! :completion selectrum)  #'+selectrum/repeat))
 
       :desc "Search for symbol in project" "*" #'+default/search-project-for-symbol-at-point
       :desc "Search project"               "/" #'+default/search-project