WIP

org-ql.el

@@ -1679,13 +1679,26 @@ If ON, return non-nil if entry has a timestamp on date ON.
 
 FROM, TO, and ON should be either `ts' structs, or strings
 parseable by `parse-time-string' which may omit the time value."
-  :normalizers ((`(,predicate-names ,(and num-days (pred numberp)))
+  :normalizers
+  ((`(,predicate-names ,(and num-days (pred numberp)))
     ;; (clocked) and (closed) implicitly look into the past.
     (let ((from (->> (ts-now)
                      (ts-adjust 'day (* -1 num-days))
                      (ts-apply :hour 0 :minute 0 :second 0))))
       `(closed :from ,from))))
-  :preambles ((`(,predicate-names . ,_)
+  :preambles
+  ((`(,predicate-names . ,(and rest (guard (or (plist-get rest :from)
+                                               (plist-get rest :to)
+                                               (plist-get rest :on)))))
+    ;; Use date-optimized timestamp regexp.
+    (-let (((&plist :from :to :on :type) rest))
+      (org-ql--from-to-on)
+      (list :regexp (-let* ((from (or from (ts-adjust 'day (- org-ql-ts-days-from-default) (ts-now))))
+                            (to (or to (ts-adjust 'day org-ql-ts-days-to-default (ts-now))))
+                            (ts-regexp (org-ql--ts-range-to-regexp from to :type 'inactive)))
+                      (rx-to-string `(seq bow (0+ blank) "CLOSED:" (1+ blank) (regexp ,ts-regexp))))
+            :query query)))
+   (`(,predicate-names . ,_)
     ;;  Predicate still needs testing.
     (list :regexp org-closed-time-regexp :query query)))
   :body