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(defvar kj/history-command "fc -R $HISTFILE && fc -l 1"
"History command used to get shell history.")
(defvar kj/history-regexp
(rx bol (* " ")
;; Index
(* digit)
(* " ")
;; Command
(group (1+ (not "\n")))))
(defun kj/get-shell-history ()
(with-temp-buffer
(unless (process-file
"zsh"
nil
(current-buffer)
nil
"-c"
kj/history-command)
(error "Getting history failed: %s" (buffer-string)))
(goto-char (point-min))
(let ((result))
(save-match-data
(while (re-search-forward kj/history-regexp nil t)
(let ((command
;; Fix up multi-line commands.
(string-replace "\\\\n" "\\\n" (match-string-no-properties 1))))
(push command result))))
result)))
(defun kj/consult-history ()
(interactive)
(if (not
(or (and (minibufferp)
(eq minibuffer-history-variable 'shell-command-history))
(derived-mode-p '(term-mode shell-mode))
))
(call-interactively 'consult-history)
(pcase-let* ((bol
(cond ((derived-mode-p 'eshell-mode) 'eshell-bol)
((derived-mode-p 'term-mode) 'term-bol)
((derived-mode-p 'comint-mode) 'comint-bol)))
(`(,beg . ,end)
(cond ((minibufferp)
(cons (minibuffer-prompt-end) (point-max)))
(bol (save-excursion
(funcall bol)
(cons (point) (pos-eol))))
(t (cons (point) (point)))))
(str (consult--read
(kj/get-shell-history)
:prompt "Shell history: "
:history t
:sort nil
:initial (buffer-substring-no-properties beg end)
:state (consult--insertion-preview beg end))))
(delete-region beg end)
(insert (substring-no-properties str)))))
(provide 'kj-history)
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