Allow minibuffer completion on previous input

README.org

@@ -536,6 +536,30 @@ niche than the five packages above.
         (add-hook hook #'company-mode))))
 #+end_src
 
+** Minibuffer history completion
+
+See [[https://lists.gnu.org/archive/html/emacs-devel/2021-12/msg00802.html][Juri Linkov (Emacs Developer mailing list)]] for how to allow completion on
+previous input in the minibuffer.
+
+#+attr_latex: :options bgcolor=LightGoldenrodYellow
+#+begin_src emacs-lisp
+  (defun minibuffer-setup-history-completions ()
+    (unless (or minibuffer-completion-table minibuffer-completion-predicate)
+      (setq-local minibuffer-completion-table
+                  (symbol-value minibuffer-history-variable))))
+
+  (add-hook 'minibuffer-setup-hook 'minibuffer-setup-history-completions)
+
+  ;; Adapted from ‘minibuffer-complete’:
+  (defun my-minibuffer-complete-history ()
+    (interactive)
+    (completion-in-region (minibuffer--completion-prompt-end) (point-max)
+                          (symbol-value minibuffer-history-variable)
+                          nil))
+
+  (define-key minibuffer-local-map [C-tab] 'my-minibuffer-complete-history)
+#+end_src
+
 * Reading
 
 ** EPUB files