fix(company): completing-read interface on C-S-s

C-S-s while company is completing shoudl bring up the results in your
completion framework of choice (ivy, helm, vertico, etc), but failed to
do so for vertico (for any completion backend besides company-capf
perhaps).

modules/completion/company/autoload.el

@@ -155,3 +155,18 @@ C-x C-l."
   (let ((company-selection-wrap-around t))
     (call-interactively #'+company/dabbrev)
     (company-select-previous-or-abort)))
+
+;;;###autoload
+(defun +company/completing-read ()
+  "Complete current company candidates in minibuffer.
+
+Uses ivy, helm, vertico, or ido, if available."
+  (interactive)
+  (cond ((modulep! :completion ivy)
+         (call-interactively #'counsel-company))
+        ((modulep! :completion helm)
+         (call-interactively #'helm-company))
+        ((not company-candidates)
+         (user-error "No company candidates available"))
+        ((when-let (cand (completing-read "Candidate: " company-candidates))
+           (company-finish cand)))))

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

@@ -142,9 +142,7 @@
          "C-u"     #'company-previous-page
          "C-d"     #'company-next-page
          "C-s"     #'company-filter-candidates
-         "C-S-s"   (cond ((modulep! :completion vertico)  #'completion-at-point)
-                         ((modulep! :completion ivy)      #'counsel-company)
-                         ((modulep! :completion helm)     #'helm-company))
+         "C-S-s"   #'+company/completing-read
          "C-SPC"   #'company-complete-common
          "TAB"     #'company-complete-common-or-cycle
          [tab]     #'company-complete-common-or-cycle