ambevar-dotfiles/.emacs.d/lisp/patch-eshell.el

26 lines
1.1 KiB
EmacsLisp

;;; REVIEW: Ignore dups in the entire ring, not just the last entry.
;;; Reported upstream, see #30466.
;; Should be done as of Emacs 28.
(defun ambrevar/eshell-add-input-to-history (input)
"Add the string INPUT to the history ring.
Input is entered into the input history ring, if the value of
variable `eshell-input-filter' returns non-nil when called on the
input."
(require 'subr-x)
;; TODO: Report this trick, so that "ls" and "ls " don't both get added to the
;; history. Doing this from eshell-expand-input-functions breaks Eshell
;; because the input is not expected to be modified.
(setq input (string-trim-right input))
(when (funcall eshell-input-filter input)
(when (and eshell-hist-ignoredups
(not (ring-empty-p eshell-history-ring)))
(let ((dup-index (ring-member eshell-history-ring input)))
(when dup-index
(ring-remove eshell-history-ring dup-index))))
(eshell-put-history input))
(setq eshell-save-history-index eshell-history-index)
(setq eshell-history-index nil))
(advice-add 'eshell-add-input-to-history :override 'ambrevar/eshell-add-input-to-history)
(provide 'patch-eshell)