selectrum: simplify +selectrum/embark-wgrep

now that oantolin/embark#226 has been resolved.

modules/completion/selectrum/TODO.org

@@ -62,8 +62,7 @@ is it something the custom search function is doing? does ivy cache stuff?
 * PROJ Missing Features
 ** TODO Icons
 https://github.com/minad/marginalia/issues/59
-** WAIT =C-C C-e= wgrep fun
-- rework into using ~embark-export~ directly, after [[https://github.com/oantolin/embark/issues/226][this issue]] gets resolved
+** TODO =C-C C-e= wgrep fun
 - check if we can add this to ~consult-line~ too
 ** TODO bibtex-actions improvements?
 currently =SPC n b= is bound to a function, but =bibtex-actions= doesn't have a

modules/completion/selectrum/autoload/selectrum.el

@@ -81,19 +81,7 @@ If ARG (universal argument), include all files, even hidden or compressed ones."
   (require 'wgrep)
   (pcase-let ((`(,type . ,candidates)
                (run-hook-with-args-until-success 'embark-candidate-collectors)))
-    (if (null candidates)
-        (user-error "No candidates for export")
-      (if (eq type 'consult-grep)
-          (embark--quit-and-run
-           (lambda ()
-             (let ((buf (generate-new-buffer "*Embark Export Wgrep*")))
-               (with-current-buffer buf
-                 (insert (propertize "Exported grep results:\n\n" 'wgrep-header t))
-                 (dolist (line candidates) (insert line "\n"))
-                 (goto-char (point-min))
-                 (grep-mode)
-                 (setq-local wgrep-header/footer-parser #'ignore)
-                 (wgrep-setup))
-               (pop-to-buffer buf)
-               (wgrep-change-to-wgrep-mode))))
-        (user-error "embark category %S doesn't support wgrep" type)))))
+      (if (not (eq type 'consult-grep))
+          (user-error "embark category %S doesn't support wgrep" type)
+        (let ((embark-after-export-hook #'wgrep-change-to-wgrep-mode))
+          (embark-export)))))