mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-12-05 08:53:45 +00:00
176 lines
6.5 KiB
EmacsLisp
176 lines
6.5 KiB
EmacsLisp
;;; chistory.el --- list command history
|
|
|
|
;; Copyright (C) 1985 Free Software Foundation, Inc.
|
|
|
|
;; Author: K. Shane Hartman
|
|
;; Maintainer: FSF
|
|
|
|
;; This file is part of GNU Emacs.
|
|
|
|
;; GNU Emacs is free software; you can redistribute it and/or modify
|
|
;; it under the terms of the GNU General Public License as published by
|
|
;; the Free Software Foundation; either version 2, or (at your option)
|
|
;; any later version.
|
|
|
|
;; GNU Emacs is distributed in the hope that it will be useful,
|
|
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
;; GNU General Public License for more details.
|
|
|
|
;; You should have received a copy of the GNU General Public License
|
|
;; along with GNU Emacs; see the file COPYING. If not, write to
|
|
;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
|
|
;;; Commentary:
|
|
|
|
;; This really has nothing to do with list-command-history per se, but
|
|
;; its a nice alternative to C-x ESC (repeat-complex-command) and
|
|
;; functions as a lister if given no pattern. It's not important
|
|
;; enough to warrant a file of its own.
|
|
|
|
;;; Code:
|
|
|
|
;;;###autoload
|
|
(defun repeat-matching-complex-command (&optional pattern)
|
|
"Edit and re-evaluate complex command with name matching PATTERN.
|
|
Matching occurrences are displayed, most recent first, until you select
|
|
a form for evaluation. If PATTERN is empty (or nil), every form in the
|
|
command history is offered. The form is placed in the minibuffer for
|
|
editing and the result is evaluated."
|
|
(interactive "sRedo Command (regexp): ")
|
|
(if pattern
|
|
(if (equal (setq pattern
|
|
(substring pattern
|
|
(or (string-match "[ \t]*[^ \t]" pattern)
|
|
(length pattern))))
|
|
"")
|
|
(setq pattern nil)))
|
|
(let ((history command-history)
|
|
(temp)
|
|
(what))
|
|
(while (and history (not what))
|
|
(setq temp (car history))
|
|
(if (and (or (not pattern) (string-match pattern (symbol-name (car temp))))
|
|
(y-or-n-p (format "Redo %s? " (setq temp (prin1-to-string temp)))))
|
|
(setq what (car history))
|
|
(setq history (cdr history))))
|
|
(if (not what)
|
|
(error "Command history exhausted")
|
|
;; Try to remove any useless command history element for this command.
|
|
(if (eq (car (car command-history)) 'repeat-matching-complex-command)
|
|
(setq command-history (cdr command-history)))
|
|
(edit-and-eval-command "Redo: " what))))
|
|
|
|
(defvar default-command-history-filter-garbage
|
|
'(command-history-mode
|
|
list-command-history
|
|
electric-command-history)
|
|
"*A list of symbols. If `default-list-command-history-filter' is
|
|
given a list whose car is an element of this list, then it will return
|
|
non-nil (indicating the list should be discarded from the history).
|
|
Initially, all commands related to the command history are discarded.")
|
|
|
|
(defvar list-command-history-filter 'default-command-history-filter
|
|
"If non-nil, should be the name of a function of one argument.
|
|
It is passed each element of the command history when
|
|
\\[list-command-history] is called. If the filter returns non-nil for
|
|
some element, that element is excluded from the history listing. The
|
|
default filter removes commands associated with the command-history.")
|
|
|
|
(defun default-command-history-filter (frob)
|
|
"Filter commands matching `default-command-history-filter-garbage' list
|
|
from the command history."
|
|
(or (not (consp frob))
|
|
(memq (car frob) default-command-history-filter-garbage)))
|
|
|
|
(defvar list-command-history-max 32
|
|
"*If non-nil, should be a positive number which specifies the maximum
|
|
length of the Command History listing produced by `list-command-history'.")
|
|
|
|
;;;###autoload
|
|
(defun list-command-history ()
|
|
"List history of commands typed to minibuffer.
|
|
The number of commands listed is controlled by `list-command-history-max'.
|
|
Calls value of `list-command-history-filter' (if non-nil) on each history
|
|
element to judge if that element should be excluded from the list.
|
|
|
|
The buffer is left in Command History mode."
|
|
(interactive)
|
|
(with-output-to-temp-buffer
|
|
"*Command History*"
|
|
(let ((history command-history)
|
|
(buffer-read-only nil)
|
|
(count (or list-command-history-max -1)))
|
|
(while (and (/= count 0) history)
|
|
(if (and (boundp 'list-command-history-filter)
|
|
list-command-history-filter
|
|
(funcall list-command-history-filter (car history)))
|
|
nil
|
|
(setq count (1- count))
|
|
(prin1 (car history))
|
|
(terpri))
|
|
(setq history (cdr history))))
|
|
(save-excursion
|
|
(set-buffer "*Command History*")
|
|
(goto-char (point-min))
|
|
(if (eobp)
|
|
(error "No command history")
|
|
(Command-history-setup)))))
|
|
|
|
(defun Command-history-setup (&optional majormode modename keymap)
|
|
(set-buffer "*Command History*")
|
|
(use-local-map (or keymap command-history-map))
|
|
(lisp-mode-variables nil)
|
|
(set-syntax-table emacs-lisp-mode-syntax-table)
|
|
(setq buffer-read-only t)
|
|
(use-local-map (or keymap command-history-map))
|
|
(setq major-mode (or majormode 'command-history-mode))
|
|
(setq mode-name (or modename "Command History")))
|
|
|
|
(defvar command-history-hook nil
|
|
"If non-nil, its value is called on entry to `command-history-mode'.")
|
|
|
|
(defvar command-history-map nil)
|
|
(if command-history-map
|
|
nil
|
|
(setq command-history-map
|
|
(nconc (make-sparse-keymap) shared-lisp-mode-map))
|
|
(suppress-keymap command-history-map)
|
|
(define-key command-history-map "x" 'command-history-repeat)
|
|
(define-key command-history-map "\n" 'next-line)
|
|
(define-key command-history-map "\r" 'next-line)
|
|
(define-key command-history-map "\177" 'previous-line))
|
|
|
|
(defun command-history-repeat ()
|
|
"Repeat the command shown on the current line.
|
|
The buffer for that command is the previous current buffer."
|
|
(interactive)
|
|
(save-excursion
|
|
(eval (prog1
|
|
(save-excursion
|
|
(beginning-of-line)
|
|
(read (current-buffer)))
|
|
(set-buffer
|
|
(cdr (buffer-list)))))))
|
|
|
|
;;;###autoload
|
|
(defun command-history-mode ()
|
|
"Major mode for examining commands from `command-history'.
|
|
The number of commands listed is controlled by `list-command-history-max'.
|
|
The command history is filtered by `list-command-history-filter' if non-nil.
|
|
Use \\<command-history-map>\\[command-history-repeat] to repeat the command on the current line.
|
|
|
|
Otherwise much like Emacs-Lisp Mode except that there is no self-insertion
|
|
and digits provide prefix arguments. Tab does not indent.
|
|
\\{command-history-map}
|
|
Calls the value of `command-history-hook' if that is non-nil.
|
|
The Command History listing is recomputed each time this mode is invoked."
|
|
(interactive)
|
|
(list-command-history)
|
|
(pop-to-buffer "*Command History*")
|
|
(run-hooks 'command-history-hook))
|
|
|
|
(provide 'chistory)
|
|
|
|
;;; chistory.el ends here
|