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- ;; chistory -- List command history
- ;; Copyright (C) 1985 Free Software Foundation, Inc.
- ;; Principal author K. Shane Hartman
-
- ;; 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 1, 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.
-
-
- (provide 'chistory)
-
- ;; 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.
-
- (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.")
- (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.")
-
- (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 (make-keymap))
- (lisp-mode-commands command-history-map)
- (suppress-keymap command-history-map)
- (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-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.
-
- Like Emacs-Lisp Mode except that characters do not insert themselves 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))
-
-
-
-