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1581 lines
57 KiB
EmacsLisp
1581 lines
57 KiB
EmacsLisp
;;; replace.el --- replace commands for Emacs
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;; Copyright (C) 1985, 1986, 1987, 1992, 1994, 1996, 1997, 2000, 2001, 2002,
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;; 2003, 2004 Free Software Foundation, Inc.
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;; Maintainer: FSF
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2, or (at your option)
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;; any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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;; Boston, MA 02111-1307, USA.
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;;; Commentary:
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;; This package supplies the string and regular-expression replace functions
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;; documented in the Emacs user's manual.
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;;; Code:
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(defcustom case-replace t
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"*Non-nil means `query-replace' should preserve case in replacements."
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:type 'boolean
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:group 'matching)
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(defvar query-replace-history nil)
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(defvar query-replace-interactive nil
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"Non-nil means `query-replace' uses the last search string.
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That becomes the \"string to replace\".")
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(defcustom query-replace-from-history-variable 'query-replace-history
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"History list to use for the FROM argument of `query-replace' commands.
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The value of this variable should be a symbol; that symbol
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is used as a variable to hold a history list for the strings
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or patterns to be replaced."
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:group 'matching
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:type 'symbol
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:version "20.3")
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(defcustom query-replace-to-history-variable 'query-replace-history
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"History list to use for the TO argument of `query-replace' commands.
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The value of this variable should be a symbol; that symbol
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is used as a variable to hold a history list for replacement
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strings or patterns."
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:group 'matching
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:type 'symbol
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:version "20.3")
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(defcustom query-replace-skip-read-only nil
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"*Non-nil means `query-replace' and friends ignore read-only matches."
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:type 'boolean
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:group 'matching
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:version "21.4")
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(defun query-replace-descr (string)
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(mapconcat 'isearch-text-char-description string ""))
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(defun query-replace-read-from (string regexp-flag)
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"Query and return the `from' argument of a query-replace operation.
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The return value can also be a pair (FROM . TO) indicating that the user
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wants to replace FROM with TO."
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(if query-replace-interactive
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(car (if regexp-flag regexp-search-ring search-ring))
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(let* ((lastfrom (car (symbol-value query-replace-from-history-variable)))
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(lastto (car (symbol-value query-replace-to-history-variable)))
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(from
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;; The save-excursion here is in case the user marks and copies
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;; a region in order to specify the minibuffer input.
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;; That should not clobber the region for the query-replace itself.
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(save-excursion
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(when (equal lastfrom lastto)
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;; Typically, this is because the two histlists are shared.
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(setq lastfrom (cadr (symbol-value
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query-replace-from-history-variable))))
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(read-from-minibuffer
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(if (and lastto lastfrom)
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(format "%s (default %s -> %s): " string
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(query-replace-descr lastfrom)
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(query-replace-descr lastto))
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(format "%s: " string))
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nil nil nil
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query-replace-from-history-variable
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nil t))))
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(if (and (zerop (length from)) lastto lastfrom)
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(cons lastfrom
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(query-replace-compile-replacement lastto regexp-flag))
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;; Warn if user types \n or \t, but don't reject the input.
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(and regexp-flag
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(string-match "\\(\\`\\|[^\\]\\)\\(\\\\\\\\\\)*\\(\\\\[nt]\\)" from)
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(let ((match (match-string 3 from)))
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(cond
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((string= match "\\n")
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(message "Note: `\\n' here doesn't match a newline; to do that, type C-q C-j instead"))
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((string= match "\\t")
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(message "Note: `\\t' here doesn't match a tab; to do that, just type TAB")))
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(sit-for 2)))
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from))))
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(defun query-replace-compile-replacement (to regexp-flag)
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"Maybe convert a regexp replacement TO to Lisp.
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Returns a list suitable for `perform-replace' if necessary,
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the original string if not."
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(if (and regexp-flag
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(string-match "\\(\\`\\|[^\\]\\)\\(\\\\\\\\\\)*\\\\[,#]" to))
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(let (pos list char)
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(while
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(progn
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(setq pos (match-end 0))
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(push (substring to 0 (- pos 2)) list)
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(setq char (aref to (1- pos))
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to (substring to pos))
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(cond ((eq char ?\#)
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(push '(number-to-string replace-count) list))
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((eq char ?\,)
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(setq pos (read-from-string to))
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(push `(replace-quote ,(car pos)) list)
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(let ((end
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;; Swallow a space after a symbol
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;; if there is a space.
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(if (and (or (symbolp (car pos))
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;; Swallow a space after 'foo
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;; but not after (quote foo).
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(and (eq (car-safe (car pos)) 'quote)
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(not (= ?\( (aref to 0)))))
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(eq (string-match " " to (cdr pos))
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(cdr pos)))
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(1+ (cdr pos))
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(cdr pos))))
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(setq to (substring to end)))))
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(string-match "\\(\\`\\|[^\\]\\)\\(\\\\\\\\\\)*\\\\[,#]" to)))
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(setq to (nreverse (delete "" (cons to list))))
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(replace-match-string-symbols to)
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(cons 'replace-eval-replacement
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(if (cdr to)
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(cons 'concat to)
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(car to))))
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to))
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(defun query-replace-read-to (from string regexp-flag)
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"Query and return the `to' argument of a query-replace operation."
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(query-replace-compile-replacement
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(save-excursion
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(read-from-minibuffer
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(format "%s %s with: " string (query-replace-descr from))
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nil nil nil
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query-replace-to-history-variable from t))
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regexp-flag))
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(defun query-replace-read-args (string regexp-flag &optional noerror)
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(unless noerror
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(barf-if-buffer-read-only))
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(let* ((from (query-replace-read-from string regexp-flag))
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(to (if (consp from) (prog1 (cdr from) (setq from (car from)))
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(query-replace-read-to from string regexp-flag))))
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(list from to current-prefix-arg)))
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(defun query-replace (from-string to-string &optional delimited start end)
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"Replace some occurrences of FROM-STRING with TO-STRING.
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As each match is found, the user must type a character saying
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what to do with it. For directions, type \\[help-command] at that time.
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In Transient Mark mode, if the mark is active, operate on the contents
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of the region. Otherwise, operate from point to the end of the buffer.
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If `query-replace-interactive' is non-nil, the last incremental search
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string is used as FROM-STRING--you don't have to specify it with the
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minibuffer.
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Matching is independent of case if `case-fold-search' is non-nil and
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FROM-STRING has no uppercase letters. Replacement transfers the case
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pattern of the old text to the new text, if `case-replace' and
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`case-fold-search' are non-nil and FROM-STRING has no uppercase
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letters. \(Transferring the case pattern means that if the old text
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matched is all caps, or capitalized, then its replacement is upcased
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or capitalized.)
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Third arg DELIMITED (prefix arg if interactive), if non-nil, means replace
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only matches surrounded by word boundaries.
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Fourth and fifth arg START and END specify the region to operate on.
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To customize possible responses, change the \"bindings\" in `query-replace-map'."
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(interactive (let ((common
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(query-replace-read-args "Query replace" nil)))
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(list (nth 0 common) (nth 1 common) (nth 2 common)
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;; These are done separately here
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;; so that command-history will record these expressions
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;; rather than the values they had this time.
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(if (and transient-mark-mode mark-active)
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(region-beginning))
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(if (and transient-mark-mode mark-active)
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(region-end)))))
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(perform-replace from-string to-string t nil delimited nil nil start end))
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(define-key esc-map "%" 'query-replace)
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(defun query-replace-regexp (regexp to-string &optional delimited start end)
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"Replace some things after point matching REGEXP with TO-STRING.
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As each match is found, the user must type a character saying
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what to do with it. For directions, type \\[help-command] at that time.
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In Transient Mark mode, if the mark is active, operate on the contents
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of the region. Otherwise, operate from point to the end of the buffer.
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If `query-replace-interactive' is non-nil, the last incremental search
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regexp is used as REGEXP--you don't have to specify it with the
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minibuffer.
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Matching is independent of case if `case-fold-search' is non-nil and
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REGEXP has no uppercase letters. Replacement transfers the case
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pattern of the old text to the new text, if `case-replace' and
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`case-fold-search' are non-nil and REGEXP has no uppercase letters.
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\(Transferring the case pattern means that if the old text matched is
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all caps, or capitalized, then its replacement is upcased or
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capitalized.)
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Third arg DELIMITED (prefix arg if interactive), if non-nil, means replace
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only matches surrounded by word boundaries.
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Fourth and fifth arg START and END specify the region to operate on.
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In TO-STRING, `\\&' stands for whatever matched the whole of REGEXP,
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and `\\=\\N' (where N is a digit) stands for
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whatever what matched the Nth `\\(...\\)' in REGEXP.
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`\\?' lets you edit the replacement text in the minibuffer
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at the given position for each replacement.
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In interactive calls, the replacement text can contain `\\,'
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followed by a Lisp expression. Each
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replacement evaluates that expression to compute the replacement
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string. Inside of that expression, `\\&' is a string denoting the
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whole match as a string, `\\N' for a partial match, `\\#&' and `\\#N'
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for the whole or a partial match converted to a number with
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`string-to-number', and `\\#' itself for the number of replacements
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done so far (starting with zero).
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If the replacement expression is a symbol, write a space after it
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to terminate it. One space there, if any, will be discarded.
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When using those Lisp features interactively in the replacement
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text, TO-STRING is actually made a list instead of a string.
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Use \\[repeat-complex-command] after this command for details."
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(interactive
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(let ((common
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(query-replace-read-args "Query replace regexp" t)))
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(list (nth 0 common) (nth 1 common) (nth 2 common)
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;; These are done separately here
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;; so that command-history will record these expressions
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;; rather than the values they had this time.
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(if (and transient-mark-mode mark-active)
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(region-beginning))
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(if (and transient-mark-mode mark-active)
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(region-end)))))
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(perform-replace regexp to-string t t delimited nil nil start end))
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(define-key esc-map [?\C-%] 'query-replace-regexp)
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(defun query-replace-regexp-eval (regexp to-expr &optional delimited start end)
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"Replace some things after point matching REGEXP with the result of TO-EXPR.
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As each match is found, the user must type a character saying
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what to do with it. For directions, type \\[help-command] at that time.
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TO-EXPR is a Lisp expression evaluated to compute each replacement. It may
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reference `replace-count' to get the number of replacements already made.
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If the result of TO-EXPR is not a string, it is converted to one using
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`prin1-to-string' with the NOESCAPE argument (which see).
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For convenience, when entering TO-EXPR interactively, you can use `\\&' or
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`\\0' to stand for whatever matched the whole of REGEXP, and `\\N' (where
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N is a digit) to stand for whatever matched the Nth `\\(...\\)' in REGEXP.
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Use `\\#&' or `\\#N' if you want a number instead of a string.
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In interactive use, `\\#' in itself stands for `replace-count'.
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In Transient Mark mode, if the mark is active, operate on the contents
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of the region. Otherwise, operate from point to the end of the buffer.
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If `query-replace-interactive' is non-nil, the last incremental search
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regexp is used as REGEXP--you don't have to specify it with the
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minibuffer.
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Preserves case in each replacement if `case-replace' and `case-fold-search'
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are non-nil and REGEXP has no uppercase letters.
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Third arg DELIMITED (prefix arg if interactive), if non-nil, means replace
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only matches that are surrounded by word boundaries.
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Fourth and fifth arg START and END specify the region to operate on."
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(interactive
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(progn
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(barf-if-buffer-read-only)
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(let* ((from
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;; Let-bind the history var to disable the "foo -> bar" default.
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;; Maybe we shouldn't disable this default, but for now I'll
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;; leave it off. --Stef
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(let ((query-replace-to-history-variable nil))
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(query-replace-read-from "Query replace regexp" t)))
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(to (list (read-from-minibuffer
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(format "Query replace regexp %s with eval: "
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(query-replace-descr from))
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nil nil t query-replace-to-history-variable from t))))
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;; We make TO a list because replace-match-string-symbols requires one,
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;; and the user might enter a single token.
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(replace-match-string-symbols to)
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(list from (car to) current-prefix-arg
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(if (and transient-mark-mode mark-active)
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(region-beginning))
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(if (and transient-mark-mode mark-active)
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(region-end))))))
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(perform-replace regexp (cons 'replace-eval-replacement to-expr)
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t 'literal delimited nil nil start end))
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(defun map-query-replace-regexp (regexp to-strings &optional n start end)
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"Replace some matches for REGEXP with various strings, in rotation.
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The second argument TO-STRINGS contains the replacement strings,
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separated by spaces. Third arg DELIMITED (prefix arg if interactive),
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if non-nil, means replace only matches surrounded by word boundaries.
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This command works like `query-replace-regexp' except that each
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successive replacement uses the next successive replacement string,
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wrapping around from the last such string to the first.
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In Transient Mark mode, if the mark is active, operate on the contents
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of the region. Otherwise, operate from point to the end of the buffer.
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Non-interactively, TO-STRINGS may be a list of replacement strings.
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If `query-replace-interactive' is non-nil, the last incremental search
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regexp is used as REGEXP--you don't have to specify it with the minibuffer.
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A prefix argument N says to use each replacement string N times
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before rotating to the next.
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Fourth and fifth arg START and END specify the region to operate on."
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(interactive
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(let* ((from (if query-replace-interactive
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(car regexp-search-ring)
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(read-from-minibuffer "Map query replace (regexp): "
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nil nil nil
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'query-replace-history nil t)))
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(to (read-from-minibuffer
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(format "Query replace %s with (space-separated strings): "
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(query-replace-descr from))
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nil nil nil
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'query-replace-history from t)))
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(list from to
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(and current-prefix-arg
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(prefix-numeric-value current-prefix-arg))
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(if (and transient-mark-mode mark-active)
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(region-beginning))
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(if (and transient-mark-mode mark-active)
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(region-end)))))
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(let (replacements)
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(if (listp to-strings)
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(setq replacements to-strings)
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(while (/= (length to-strings) 0)
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(if (string-match " " to-strings)
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(setq replacements
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(append replacements
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(list (substring to-strings 0
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(string-match " " to-strings))))
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to-strings (substring to-strings
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(1+ (string-match " " to-strings))))
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(setq replacements (append replacements (list to-strings))
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to-strings ""))))
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(perform-replace regexp replacements t t nil n nil start end)))
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(defun replace-string (from-string to-string &optional delimited start end)
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"Replace occurrences of FROM-STRING with TO-STRING.
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Preserve case in each match if `case-replace' and `case-fold-search'
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are non-nil and FROM-STRING has no uppercase letters.
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\(Preserving case means that if the string matched is all caps, or capitalized,
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then its replacement is upcased or capitalized.)
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In Transient Mark mode, if the mark is active, operate on the contents
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||
of the region. Otherwise, operate from point to the end of the buffer.
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||
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Third arg DELIMITED (prefix arg if interactive), if non-nil, means replace
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only matches surrounded by word boundaries.
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Fourth and fifth arg START and END specify the region to operate on.
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If `query-replace-interactive' is non-nil, the last incremental search
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string is used as FROM-STRING--you don't have to specify it with the
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minibuffer.
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This function is usually the wrong thing to use in a Lisp program.
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What you probably want is a loop like this:
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(while (search-forward FROM-STRING nil t)
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(replace-match TO-STRING nil t))
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which will run faster and will not set the mark or print anything.
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\(You may need a more complex loop if FROM-STRING can match the null string
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and TO-STRING is also null.)"
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(interactive
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(let ((common
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(query-replace-read-args "Replace string" nil)))
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(list (nth 0 common) (nth 1 common) (nth 2 common)
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(if (and transient-mark-mode mark-active)
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(region-beginning))
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(if (and transient-mark-mode mark-active)
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(region-end)))))
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(perform-replace from-string to-string nil nil delimited nil nil start end))
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(defun replace-regexp (regexp to-string &optional delimited start end)
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"Replace things after point matching REGEXP with TO-STRING.
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Preserve case in each match if `case-replace' and `case-fold-search'
|
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are non-nil and REGEXP has no uppercase letters.
|
||
|
||
In Transient Mark mode, if the mark is active, operate on the contents
|
||
of the region. Otherwise, operate from point to the end of the buffer.
|
||
|
||
Third arg DELIMITED (prefix arg if interactive), if non-nil, means replace
|
||
only matches surrounded by word boundaries.
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||
Fourth and fifth arg START and END specify the region to operate on.
|
||
|
||
In TO-STRING, `\\&' stands for whatever matched the whole of REGEXP,
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||
and `\\=\\N' (where N is a digit) stands for
|
||
whatever what matched the Nth `\\(...\\)' in REGEXP.
|
||
`\\?' lets you edit the replacement text in the minibuffer
|
||
at the given position for each replacement.
|
||
|
||
In interactive calls, the replacement text may contain `\\,'
|
||
followed by a Lisp expression used as part of the replacement
|
||
text. Inside of that expression, `\\&' is a string denoting the
|
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whole match, `\\N' a partial matches, `\\#&' and `\\#N' the
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respective numeric values from `string-to-number', and `\\#'
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||
itself for `replace-count', the number of replacements occured so
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far.
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If your Lisp expression is an identifier and the next letter in
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the replacement string would be interpreted as part of it, you
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||
can wrap it with an expression like `\\,(or \\#)'. Incidentally,
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||
for this particular case you may also enter `\\#' in the
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replacement text directly.
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||
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When using those Lisp features interactively in the replacement
|
||
text, TO-STRING is actually made a list instead of a string.
|
||
Use \\[repeat-complex-command] after this command for details.
|
||
|
||
If `query-replace-interactive' is non-nil, the last incremental search
|
||
regexp is used as REGEXP--you don't have to specify it with the minibuffer.
|
||
|
||
This function is usually the wrong thing to use in a Lisp program.
|
||
What you probably want is a loop like this:
|
||
(while (re-search-forward REGEXP nil t)
|
||
(replace-match TO-STRING nil nil))
|
||
which will run faster and will not set the mark or print anything."
|
||
(interactive
|
||
(let ((common
|
||
(query-replace-read-args "Replace regexp" t)))
|
||
(list (nth 0 common) (nth 1 common) (nth 2 common)
|
||
(if (and transient-mark-mode mark-active)
|
||
(region-beginning))
|
||
(if (and transient-mark-mode mark-active)
|
||
(region-end)))))
|
||
(perform-replace regexp to-string nil t delimited nil nil start end))
|
||
|
||
|
||
(defvar regexp-history nil
|
||
"History list for some commands that read regular expressions.")
|
||
|
||
|
||
(defalias 'delete-non-matching-lines 'keep-lines)
|
||
(defalias 'delete-matching-lines 'flush-lines)
|
||
(defalias 'count-matches 'how-many)
|
||
|
||
|
||
(defun keep-lines-read-args (prompt)
|
||
"Read arguments for `keep-lines' and friends.
|
||
Prompt for a regexp with PROMPT.
|
||
Value is a list, (REGEXP)."
|
||
(list (read-from-minibuffer prompt nil nil nil
|
||
'regexp-history nil t)))
|
||
|
||
(defun keep-lines (regexp &optional rstart rend)
|
||
"Delete all lines except those containing matches for REGEXP.
|
||
A match split across lines preserves all the lines it lies in.
|
||
Applies to all lines after point.
|
||
|
||
If REGEXP contains upper case characters (excluding those preceded by `\\'),
|
||
the matching is case-sensitive.
|
||
|
||
Second and third arg RSTART and REND specify the region to operate on.
|
||
|
||
Interactively, in Transient Mark mode when the mark is active, operate
|
||
on the contents of the region. Otherwise, operate from point to the
|
||
end of the buffer."
|
||
|
||
(interactive
|
||
(progn
|
||
(barf-if-buffer-read-only)
|
||
(keep-lines-read-args "Keep lines (containing match for regexp): ")))
|
||
(if rstart
|
||
(progn
|
||
(goto-char (min rstart rend))
|
||
(setq rend (copy-marker (max rstart rend))))
|
||
(if (and transient-mark-mode mark-active)
|
||
(setq rstart (region-beginning)
|
||
rend (copy-marker (region-end)))
|
||
(setq rstart (point)
|
||
rend (point-max-marker)))
|
||
(goto-char rstart))
|
||
(save-excursion
|
||
(or (bolp) (forward-line 1))
|
||
(let ((start (point))
|
||
(case-fold-search (and case-fold-search
|
||
(isearch-no-upper-case-p regexp t))))
|
||
(while (< (point) rend)
|
||
;; Start is first char not preserved by previous match.
|
||
(if (not (re-search-forward regexp rend 'move))
|
||
(delete-region start rend)
|
||
(let ((end (save-excursion (goto-char (match-beginning 0))
|
||
(beginning-of-line)
|
||
(point))))
|
||
;; Now end is first char preserved by the new match.
|
||
(if (< start end)
|
||
(delete-region start end))))
|
||
|
||
(setq start (save-excursion (forward-line 1) (point)))
|
||
;; If the match was empty, avoid matching again at same place.
|
||
(and (< (point) rend)
|
||
(= (match-beginning 0) (match-end 0))
|
||
(forward-char 1))))))
|
||
|
||
|
||
(defun flush-lines (regexp &optional rstart rend)
|
||
"Delete lines containing matches for REGEXP.
|
||
If a match is split across lines, all the lines it lies in are deleted.
|
||
Applies to lines after point.
|
||
|
||
If REGEXP contains upper case characters (excluding those preceded by `\\'),
|
||
the matching is case-sensitive.
|
||
|
||
Second and third arg RSTART and REND specify the region to operate on.
|
||
|
||
Interactively, in Transient Mark mode when the mark is active, operate
|
||
on the contents of the region. Otherwise, operate from point to the
|
||
end of the buffer."
|
||
|
||
(interactive
|
||
(progn
|
||
(barf-if-buffer-read-only)
|
||
(keep-lines-read-args "Flush lines (containing match for regexp): ")))
|
||
(if rstart
|
||
(progn
|
||
(goto-char (min rstart rend))
|
||
(setq rend (copy-marker (max rstart rend))))
|
||
(if (and transient-mark-mode mark-active)
|
||
(setq rstart (region-beginning)
|
||
rend (copy-marker (region-end)))
|
||
(setq rstart (point)
|
||
rend (point-max-marker)))
|
||
(goto-char rstart))
|
||
(let ((case-fold-search (and case-fold-search
|
||
(isearch-no-upper-case-p regexp t))))
|
||
(save-excursion
|
||
(while (and (< (point) rend)
|
||
(re-search-forward regexp rend t))
|
||
(delete-region (save-excursion (goto-char (match-beginning 0))
|
||
(beginning-of-line)
|
||
(point))
|
||
(progn (forward-line 1) (point)))))))
|
||
|
||
|
||
(defun how-many (regexp &optional rstart rend)
|
||
"Print number of matches for REGEXP following point.
|
||
|
||
If REGEXP contains upper case characters (excluding those preceded by `\\'),
|
||
the matching is case-sensitive.
|
||
|
||
Second and third arg RSTART and REND specify the region to operate on.
|
||
|
||
Interactively, in Transient Mark mode when the mark is active, operate
|
||
on the contents of the region. Otherwise, operate from point to the
|
||
end of the buffer."
|
||
|
||
(interactive
|
||
(keep-lines-read-args "How many matches for (regexp): "))
|
||
(save-excursion
|
||
(if rstart
|
||
(goto-char (min rstart rend))
|
||
(if (and transient-mark-mode mark-active)
|
||
(setq rstart (region-beginning)
|
||
rend (copy-marker (region-end)))
|
||
(setq rstart (point)
|
||
rend (point-max-marker)))
|
||
(goto-char rstart))
|
||
(let ((count 0)
|
||
opoint
|
||
(case-fold-search (and case-fold-search
|
||
(isearch-no-upper-case-p regexp t))))
|
||
(while (and (< (point) rend)
|
||
(progn (setq opoint (point))
|
||
(re-search-forward regexp rend t)))
|
||
(if (= opoint (point))
|
||
(forward-char 1)
|
||
(setq count (1+ count))))
|
||
(message "%d occurrences" count))))
|
||
|
||
|
||
(defvar occur-mode-map
|
||
(let ((map (make-sparse-keymap)))
|
||
(define-key map [mouse-2] 'occur-mode-mouse-goto)
|
||
(define-key map "\C-c\C-c" 'occur-mode-goto-occurrence)
|
||
(define-key map "\C-m" 'occur-mode-goto-occurrence)
|
||
(define-key map "o" 'occur-mode-goto-occurrence-other-window)
|
||
(define-key map "\C-o" 'occur-mode-display-occurrence)
|
||
(define-key map "\M-n" 'occur-next)
|
||
(define-key map "\M-p" 'occur-prev)
|
||
(define-key map "r" 'occur-rename-buffer)
|
||
(define-key map "c" 'clone-buffer)
|
||
(define-key map "g" 'revert-buffer)
|
||
(define-key map "q" 'quit-window)
|
||
(define-key map "z" 'kill-this-buffer)
|
||
(define-key map "\C-c\C-f" 'next-error-follow-minor-mode)
|
||
map)
|
||
"Keymap for `occur-mode'.")
|
||
|
||
(defvar occur-revert-arguments nil
|
||
"Arguments to pass to `occur-1' to revert an Occur mode buffer.
|
||
See `occur-revert-function'.")
|
||
|
||
(defcustom occur-mode-hook '(turn-on-font-lock)
|
||
"Hook run when entering Occur mode."
|
||
:type 'hook
|
||
:group 'matching)
|
||
|
||
(defcustom occur-hook nil
|
||
"Hook run when `occur' is called."
|
||
:type 'hook
|
||
:group 'matching)
|
||
|
||
(put 'occur-mode 'mode-class 'special)
|
||
(defun occur-mode ()
|
||
"Major mode for output from \\[occur].
|
||
\\<occur-mode-map>Move point to one of the items in this buffer, then use
|
||
\\[occur-mode-goto-occurrence] to go to the occurrence that the item refers to.
|
||
Alternatively, click \\[occur-mode-mouse-goto] on an item to go to it.
|
||
|
||
\\{occur-mode-map}"
|
||
(interactive)
|
||
(kill-all-local-variables)
|
||
(use-local-map occur-mode-map)
|
||
(setq major-mode 'occur-mode)
|
||
(setq mode-name "Occur")
|
||
(set (make-local-variable 'revert-buffer-function) 'occur-revert-function)
|
||
(make-local-variable 'occur-revert-arguments)
|
||
(add-hook 'change-major-mode-hook 'font-lock-defontify nil t)
|
||
(setq next-error-function 'occur-next-error)
|
||
(run-hooks 'occur-mode-hook))
|
||
|
||
(defun occur-revert-function (ignore1 ignore2)
|
||
"Handle `revert-buffer' for Occur mode buffers."
|
||
(apply 'occur-1 (append occur-revert-arguments (list (buffer-name)))))
|
||
|
||
(defun occur-mode-mouse-goto (event)
|
||
"In Occur mode, go to the occurrence whose line you click on."
|
||
(interactive "e")
|
||
(let (pos)
|
||
(save-excursion
|
||
(set-buffer (window-buffer (posn-window (event-end event))))
|
||
(save-excursion
|
||
(goto-char (posn-point (event-end event)))
|
||
(setq pos (occur-mode-find-occurrence))))
|
||
(pop-to-buffer (marker-buffer pos))
|
||
(goto-char pos)))
|
||
|
||
(defun occur-mode-find-occurrence ()
|
||
(let ((pos (get-text-property (point) 'occur-target)))
|
||
(unless pos
|
||
(error "No occurrence on this line"))
|
||
(unless (buffer-live-p (marker-buffer pos))
|
||
(error "Buffer for this occurrence was killed"))
|
||
pos))
|
||
|
||
(defun occur-mode-goto-occurrence ()
|
||
"Go to the occurrence the current line describes."
|
||
(interactive)
|
||
(let ((pos (occur-mode-find-occurrence)))
|
||
(pop-to-buffer (marker-buffer pos))
|
||
(goto-char pos)))
|
||
|
||
(defun occur-mode-goto-occurrence-other-window ()
|
||
"Go to the occurrence the current line describes, in another window."
|
||
(interactive)
|
||
(let ((pos (occur-mode-find-occurrence)))
|
||
(switch-to-buffer-other-window (marker-buffer pos))
|
||
(goto-char pos)))
|
||
|
||
(defun occur-mode-display-occurrence ()
|
||
"Display in another window the occurrence the current line describes."
|
||
(interactive)
|
||
(let ((pos (occur-mode-find-occurrence))
|
||
window
|
||
;; Bind these to ensure `display-buffer' puts it in another window.
|
||
same-window-buffer-names
|
||
same-window-regexps)
|
||
(setq window (display-buffer (marker-buffer pos)))
|
||
;; This is the way to set point in the proper window.
|
||
(save-selected-window
|
||
(select-window window)
|
||
(goto-char pos))))
|
||
|
||
(defun occur-find-match (n search message)
|
||
(if (not n) (setq n 1))
|
||
(let ((r))
|
||
(while (> n 0)
|
||
(setq r (funcall search (point) 'occur-match))
|
||
(and r
|
||
(get-text-property r 'occur-match)
|
||
(setq r (funcall search r 'occur-match)))
|
||
(if r
|
||
(goto-char r)
|
||
(error message))
|
||
(setq n (1- n)))))
|
||
|
||
(defun occur-next (&optional n)
|
||
"Move to the Nth (default 1) next match in an Occur mode buffer."
|
||
(interactive "p")
|
||
(occur-find-match n #'next-single-property-change "No more matches"))
|
||
|
||
(defun occur-prev (&optional n)
|
||
"Move to the Nth (default 1) previous match in an Occur mode buffer."
|
||
(interactive "p")
|
||
(occur-find-match n #'previous-single-property-change "No earlier matches"))
|
||
|
||
(defun occur-next-error (&optional argp reset)
|
||
"Move to the Nth (default 1) next match in an Occur mode buffer.
|
||
Compatibility function for \\[next-error] invocations."
|
||
(interactive "p")
|
||
(when reset
|
||
(occur-find-match 0 #'next-single-property-change "No first match"))
|
||
(occur-find-match
|
||
(prefix-numeric-value argp)
|
||
(if (> 0 (prefix-numeric-value argp))
|
||
#'previous-single-property-change
|
||
#'next-single-property-change)
|
||
"No more matches")
|
||
;; In case the *Occur* buffer is visible in a nonselected window.
|
||
(set-window-point (get-buffer-window (current-buffer)) (point))
|
||
(occur-mode-goto-occurrence))
|
||
|
||
|
||
(defcustom list-matching-lines-default-context-lines 0
|
||
"*Default number of context lines included around `list-matching-lines' matches.
|
||
A negative number means to include that many lines before the match.
|
||
A positive number means to include that many lines both before and after."
|
||
:type 'integer
|
||
:group 'matching)
|
||
|
||
(defalias 'list-matching-lines 'occur)
|
||
|
||
(defcustom list-matching-lines-face 'bold
|
||
"*Face used by \\[list-matching-lines] to show the text that matches.
|
||
If the value is nil, don't highlight the matching portions specially."
|
||
:type 'face
|
||
:group 'matching)
|
||
|
||
(defcustom list-matching-lines-buffer-name-face 'underline
|
||
"*Face used by \\[list-matching-lines] to show the names of buffers.
|
||
If the value is nil, don't highlight the buffer names specially."
|
||
:type 'face
|
||
:group 'matching)
|
||
|
||
(defun occur-accumulate-lines (count &optional no-props)
|
||
(save-excursion
|
||
(let ((forwardp (> count 0))
|
||
(result nil))
|
||
(while (not (or (zerop count)
|
||
(if forwardp
|
||
(eobp)
|
||
(bobp))))
|
||
(setq count (+ count (if forwardp -1 1)))
|
||
(push
|
||
(funcall (if no-props
|
||
#'buffer-substring-no-properties
|
||
#'buffer-substring)
|
||
(line-beginning-position)
|
||
(line-end-position))
|
||
result)
|
||
(forward-line (if forwardp 1 -1)))
|
||
(nreverse result))))
|
||
|
||
(defun occur-read-primary-args ()
|
||
(list (let* ((default (car regexp-history))
|
||
(input
|
||
(read-from-minibuffer
|
||
(if default
|
||
(format "List lines matching regexp (default `%s'): "
|
||
(query-replace-descr default))
|
||
"List lines matching regexp: ")
|
||
nil
|
||
nil
|
||
nil
|
||
'regexp-history
|
||
default)))
|
||
(if (equal input "")
|
||
default
|
||
input))
|
||
(when current-prefix-arg
|
||
(prefix-numeric-value current-prefix-arg))))
|
||
|
||
(defun occur-rename-buffer (&optional unique-p)
|
||
"Rename the current *Occur* buffer to *Occur: original-buffer-name*.
|
||
Here `original-buffer-name' is the buffer name were occur was originally run.
|
||
When given the prefix argument, the renaming will not clobber the existing
|
||
buffer(s) of that name, but use `generate-new-buffer-name' instead.
|
||
You can add this to `occur-hook' if you always want a separate *Occur*
|
||
buffer for each buffer where you invoke `occur'."
|
||
(interactive "P")
|
||
(with-current-buffer
|
||
(if (eq major-mode 'occur-mode) (current-buffer) (get-buffer "*Occur*"))
|
||
(rename-buffer (concat "*Occur: "
|
||
(mapconcat #'buffer-name
|
||
(car (cddr occur-revert-arguments)) "/")
|
||
"*")
|
||
unique-p)))
|
||
|
||
(defun occur (regexp &optional nlines)
|
||
"Show all lines in the current buffer containing a match for REGEXP.
|
||
|
||
If a match spreads across multiple lines, all those lines are shown.
|
||
|
||
Each line is displayed with NLINES lines before and after, or -NLINES
|
||
before if NLINES is negative.
|
||
NLINES defaults to `list-matching-lines-default-context-lines'.
|
||
Interactively it is the prefix arg.
|
||
|
||
The lines are shown in a buffer named `*Occur*'.
|
||
It serves as a menu to find any of the occurrences in this buffer.
|
||
\\<occur-mode-map>\\[describe-mode] in that buffer will explain how.
|
||
|
||
If REGEXP contains upper case characters (excluding those preceded by `\\'),
|
||
the matching is case-sensitive."
|
||
(interactive (occur-read-primary-args))
|
||
(occur-1 regexp nlines (list (current-buffer))))
|
||
|
||
(defun multi-occur (bufs regexp &optional nlines)
|
||
"Show all lines in buffers BUFS containing a match for REGEXP.
|
||
This function acts on multiple buffers; otherwise, it is exactly like
|
||
`occur'."
|
||
(interactive
|
||
(cons
|
||
(let* ((bufs (list (read-buffer "First buffer to search: "
|
||
(current-buffer) t)))
|
||
(buf nil)
|
||
(ido-ignore-item-temp-list bufs))
|
||
(while (not (string-equal
|
||
(setq buf (read-buffer
|
||
(if (eq read-buffer-function 'ido-read-buffer)
|
||
"Next buffer to search (C-j to end): "
|
||
"Next buffer to search (RET to end): ")
|
||
nil t))
|
||
""))
|
||
(add-to-list 'bufs buf)
|
||
(setq ido-ignore-item-temp-list bufs))
|
||
(nreverse (mapcar #'get-buffer bufs)))
|
||
(occur-read-primary-args)))
|
||
(occur-1 regexp nlines bufs))
|
||
|
||
(defun multi-occur-by-filename-regexp (bufregexp regexp &optional nlines)
|
||
"Show all lines matching REGEXP in buffers named by BUFREGEXP.
|
||
See also `multi-occur'."
|
||
(interactive
|
||
(cons
|
||
(let* ((default (car regexp-history))
|
||
(input
|
||
(read-from-minibuffer
|
||
"List lines in buffers whose filename matches regexp: "
|
||
nil
|
||
nil
|
||
nil
|
||
'regexp-history)))
|
||
(if (equal input "")
|
||
default
|
||
input))
|
||
(occur-read-primary-args)))
|
||
(when bufregexp
|
||
(occur-1 regexp nlines
|
||
(delq nil
|
||
(mapcar (lambda (buf)
|
||
(when (and (buffer-file-name buf)
|
||
(string-match bufregexp
|
||
(buffer-file-name buf)))
|
||
buf))
|
||
(buffer-list))))))
|
||
|
||
(defun occur-1 (regexp nlines bufs &optional buf-name)
|
||
(unless buf-name
|
||
(setq buf-name "*Occur*"))
|
||
(let ((occur-buf (get-buffer-create buf-name))
|
||
(made-temp-buf nil)
|
||
(active-bufs (delq nil (mapcar #'(lambda (buf)
|
||
(when (buffer-live-p buf) buf))
|
||
bufs))))
|
||
;; Handle the case where one of the buffers we're searching is the
|
||
;; *Occur* buffer itself.
|
||
(when (memq occur-buf bufs)
|
||
(setq occur-buf (with-current-buffer occur-buf
|
||
(clone-buffer "*Occur-temp*"))
|
||
made-temp-buf t))
|
||
(with-current-buffer occur-buf
|
||
(setq buffer-read-only nil)
|
||
(occur-mode)
|
||
(erase-buffer)
|
||
(let ((count (occur-engine
|
||
regexp active-bufs occur-buf
|
||
(or nlines list-matching-lines-default-context-lines)
|
||
(and case-fold-search
|
||
(isearch-no-upper-case-p regexp t))
|
||
list-matching-lines-buffer-name-face
|
||
nil list-matching-lines-face nil)))
|
||
(let* ((bufcount (length active-bufs))
|
||
(diff (- (length bufs) bufcount)))
|
||
(message "Searched %d buffer%s%s; %s match%s for `%s'"
|
||
bufcount (if (= bufcount 1) "" "s")
|
||
(if (zerop diff) "" (format " (%d killed)" diff))
|
||
(if (zerop count) "no" (format "%d" count))
|
||
(if (= count 1) "" "es")
|
||
regexp))
|
||
;; If we had to make a temporary buffer, make it the *Occur*
|
||
;; buffer now.
|
||
(when made-temp-buf
|
||
(with-current-buffer (get-buffer buf-name)
|
||
(kill-buffer (current-buffer)))
|
||
(rename-buffer buf-name))
|
||
(setq occur-revert-arguments (list regexp nlines bufs)
|
||
buffer-read-only t)
|
||
(if (> count 0)
|
||
(progn
|
||
(display-buffer occur-buf)
|
||
(setq next-error-last-buffer occur-buf))
|
||
(kill-buffer occur-buf)))
|
||
(run-hooks 'occur-hook))))
|
||
|
||
(defun occur-engine-add-prefix (lines)
|
||
(mapcar
|
||
#'(lambda (line)
|
||
(concat " :" line "\n"))
|
||
lines))
|
||
|
||
(defun occur-engine (regexp buffers out-buf nlines case-fold-search
|
||
title-face prefix-face match-face keep-props)
|
||
(with-current-buffer out-buf
|
||
(setq buffer-read-only nil)
|
||
(let ((globalcount 0)
|
||
(coding nil))
|
||
;; Map over all the buffers
|
||
(dolist (buf buffers)
|
||
(when (buffer-live-p buf)
|
||
(let ((matches 0) ;; count of matched lines
|
||
(lines 1) ;; line count
|
||
(matchbeg 0)
|
||
(origpt nil)
|
||
(begpt nil)
|
||
(endpt nil)
|
||
(marker nil)
|
||
(curstring "")
|
||
(headerpt (with-current-buffer out-buf (point))))
|
||
(save-excursion
|
||
(set-buffer buf)
|
||
(or coding
|
||
;; Set CODING only if the current buffer locally
|
||
;; binds buffer-file-coding-system.
|
||
(not (local-variable-p 'buffer-file-coding-system))
|
||
(setq coding buffer-file-coding-system))
|
||
(save-excursion
|
||
(goto-char (point-min)) ;; begin searching in the buffer
|
||
(while (not (eobp))
|
||
(setq origpt (point))
|
||
(when (setq endpt (re-search-forward regexp nil t))
|
||
(setq matches (1+ matches)) ;; increment match count
|
||
(setq matchbeg (match-beginning 0))
|
||
(setq begpt (save-excursion
|
||
(goto-char matchbeg)
|
||
(line-beginning-position)))
|
||
(setq lines (+ lines (1- (count-lines origpt endpt))))
|
||
(setq marker (make-marker))
|
||
(set-marker marker matchbeg)
|
||
(setq curstring (buffer-substring begpt
|
||
(line-end-position)))
|
||
;; Depropertize the string, and maybe
|
||
;; highlight the matches
|
||
(let ((len (length curstring))
|
||
(start 0))
|
||
(unless keep-props
|
||
(set-text-properties 0 len nil curstring))
|
||
(while (and (< start len)
|
||
(string-match regexp curstring start))
|
||
(add-text-properties (match-beginning 0)
|
||
(match-end 0)
|
||
(append
|
||
`(occur-match t)
|
||
(when match-face
|
||
`(font-lock-face ,match-face)))
|
||
curstring)
|
||
(setq start (match-end 0))))
|
||
;; Generate the string to insert for this match
|
||
(let* ((out-line
|
||
(concat
|
||
;; Using 7 digits aligns tabs properly.
|
||
(apply #'propertize (format "%7d:" lines)
|
||
(append
|
||
(when prefix-face
|
||
`(font-lock-face prefix-face))
|
||
'(occur-prefix t)))
|
||
curstring
|
||
"\n"))
|
||
(data
|
||
(if (= nlines 0)
|
||
;; The simple display style
|
||
out-line
|
||
;; The complex multi-line display
|
||
;; style. Generate a list of lines,
|
||
;; concatenate them all together.
|
||
(apply #'concat
|
||
(nconc
|
||
(occur-engine-add-prefix (nreverse (cdr (occur-accumulate-lines (- (1+ (abs nlines))) keep-props))))
|
||
(list out-line)
|
||
(if (> nlines 0)
|
||
(occur-engine-add-prefix
|
||
(cdr (occur-accumulate-lines (1+ nlines) keep-props)))))))))
|
||
;; Actually insert the match display data
|
||
(with-current-buffer out-buf
|
||
(let ((beg (point))
|
||
(end (progn (insert data) (point))))
|
||
(unless (= nlines 0)
|
||
(insert "-------\n"))
|
||
(add-text-properties
|
||
beg end
|
||
`(occur-target ,marker help-echo "mouse-2: go to this occurrence"))
|
||
;; We don't put `mouse-face' on the newline,
|
||
;; because that loses.
|
||
(add-text-properties beg (1- end) '(mouse-face highlight)))))
|
||
(goto-char endpt))
|
||
(if endpt
|
||
(progn
|
||
(setq lines (1+ lines))
|
||
;; On to the next match...
|
||
(forward-line 1))
|
||
(goto-char (point-max))))))
|
||
(when (not (zerop matches)) ;; is the count zero?
|
||
(setq globalcount (+ globalcount matches))
|
||
(with-current-buffer out-buf
|
||
(goto-char headerpt)
|
||
(let ((beg (point))
|
||
end)
|
||
(insert (format "%d match%s for \"%s\" in buffer: %s\n"
|
||
matches (if (= matches 1) "" "es")
|
||
regexp (buffer-name buf)))
|
||
(setq end (point))
|
||
(add-text-properties beg end
|
||
(append
|
||
(when title-face
|
||
`(font-lock-face ,title-face))
|
||
`(occur-title ,buf))))
|
||
(goto-char (point-min)))))))
|
||
(if coding
|
||
;; CODING is buffer-file-coding-system of the first buffer
|
||
;; that locally binds it. Let's use it also for the output
|
||
;; buffer.
|
||
(set-buffer-file-coding-system coding))
|
||
;; Return the number of matches
|
||
globalcount)))
|
||
|
||
|
||
;; It would be nice to use \\[...], but there is no reasonable way
|
||
;; to make that display both SPC and Y.
|
||
(defconst query-replace-help
|
||
"Type Space or `y' to replace one match, Delete or `n' to skip to next,
|
||
RET or `q' to exit, Period to replace one match and exit,
|
||
Comma to replace but not move point immediately,
|
||
C-r to enter recursive edit (\\[exit-recursive-edit] to get out again),
|
||
C-w to delete match and recursive edit,
|
||
C-l to clear the screen, redisplay, and offer same replacement again,
|
||
! to replace all remaining matches with no more questions,
|
||
^ to move point back to previous match,
|
||
E to edit the replacement string"
|
||
"Help message while in `query-replace'.")
|
||
|
||
(defvar query-replace-map (make-sparse-keymap)
|
||
"Keymap that defines the responses to questions in `query-replace'.
|
||
The \"bindings\" in this map are not commands; they are answers.
|
||
The valid answers include `act', `skip', `act-and-show',
|
||
`exit', `act-and-exit', `edit', `delete-and-edit', `recenter',
|
||
`automatic', `backup', `exit-prefix', and `help'.")
|
||
|
||
(define-key query-replace-map " " 'act)
|
||
(define-key query-replace-map "\d" 'skip)
|
||
(define-key query-replace-map [delete] 'skip)
|
||
(define-key query-replace-map [backspace] 'skip)
|
||
(define-key query-replace-map "y" 'act)
|
||
(define-key query-replace-map "n" 'skip)
|
||
(define-key query-replace-map "Y" 'act)
|
||
(define-key query-replace-map "N" 'skip)
|
||
(define-key query-replace-map "e" 'edit-replacement)
|
||
(define-key query-replace-map "E" 'edit-replacement)
|
||
(define-key query-replace-map "," 'act-and-show)
|
||
(define-key query-replace-map "q" 'exit)
|
||
(define-key query-replace-map "\r" 'exit)
|
||
(define-key query-replace-map [return] 'exit)
|
||
(define-key query-replace-map "." 'act-and-exit)
|
||
(define-key query-replace-map "\C-r" 'edit)
|
||
(define-key query-replace-map "\C-w" 'delete-and-edit)
|
||
(define-key query-replace-map "\C-l" 'recenter)
|
||
(define-key query-replace-map "!" 'automatic)
|
||
(define-key query-replace-map "^" 'backup)
|
||
(define-key query-replace-map "\C-h" 'help)
|
||
(define-key query-replace-map [f1] 'help)
|
||
(define-key query-replace-map [help] 'help)
|
||
(define-key query-replace-map "?" 'help)
|
||
(define-key query-replace-map "\C-g" 'quit)
|
||
(define-key query-replace-map "\C-]" 'quit)
|
||
(define-key query-replace-map "\e" 'exit-prefix)
|
||
(define-key query-replace-map [escape] 'exit-prefix)
|
||
|
||
(defun replace-match-string-symbols (n)
|
||
"Process a list (and any sub-lists), expanding certain symbols.
|
||
Symbol Expands To
|
||
N (match-string N) (where N is a string of digits)
|
||
#N (string-to-number (match-string N))
|
||
& (match-string 0)
|
||
#& (string-to-number (match-string 0))
|
||
# replace-count
|
||
|
||
Note that these symbols must be preceeded by a backslash in order to
|
||
type them."
|
||
(while n
|
||
(cond
|
||
((consp (car n))
|
||
(replace-match-string-symbols (car n))) ;Process sub-list
|
||
((symbolp (car n))
|
||
(let ((name (symbol-name (car n))))
|
||
(cond
|
||
((string-match "^[0-9]+$" name)
|
||
(setcar n (list 'match-string (string-to-number name))))
|
||
((string-match "^#[0-9]+$" name)
|
||
(setcar n (list 'string-to-number
|
||
(list 'match-string
|
||
(string-to-number (substring name 1))))))
|
||
((string= "&" name)
|
||
(setcar n '(match-string 0)))
|
||
((string= "#&" name)
|
||
(setcar n '(string-to-number (match-string 0))))
|
||
((string= "#" name)
|
||
(setcar n 'replace-count))))))
|
||
(setq n (cdr n))))
|
||
|
||
(defun replace-eval-replacement (expression replace-count)
|
||
(let ((replacement (eval expression)))
|
||
(if (stringp replacement)
|
||
replacement
|
||
(prin1-to-string replacement t))))
|
||
|
||
(defun replace-quote (replacement)
|
||
"Quote a replacement string.
|
||
This just doubles all backslashes in REPLACEMENT and
|
||
returns the resulting string. If REPLACEMENT is not
|
||
a string, it is first passed through `prin1-to-string'
|
||
with the `noescape' argument set.
|
||
|
||
`match-data' is preserved across the call."
|
||
(save-match-data
|
||
(replace-regexp-in-string "\\\\" "\\\\"
|
||
(if (stringp replacement)
|
||
replacement
|
||
(prin1-to-string replacement t))
|
||
t t)))
|
||
|
||
(defun replace-loop-through-replacements (data replace-count)
|
||
;; DATA is a vector contaning the following values:
|
||
;; 0 next-rotate-count
|
||
;; 1 repeat-count
|
||
;; 2 next-replacement
|
||
;; 3 replacements
|
||
(if (= (aref data 0) replace-count)
|
||
(progn
|
||
(aset data 0 (+ replace-count (aref data 1)))
|
||
(let ((next (cdr (aref data 2))))
|
||
(aset data 2 (if (consp next) next (aref data 3))))))
|
||
(car (aref data 2)))
|
||
|
||
(defun replace-match-data (integers reuse &optional new)
|
||
"Like `match-data', but markers in REUSE get invalidated.
|
||
If NEW is non-NIL, it is set and returned instead of fresh data,
|
||
but coerced to the correct value of INTEGERS."
|
||
(or (and new
|
||
(progn
|
||
(set-match-data new)
|
||
(and (eq new reuse)
|
||
(eq (null integers) (markerp (car reuse)))
|
||
new)))
|
||
(match-data integers
|
||
(prog1 reuse
|
||
(while reuse
|
||
(if (markerp (car reuse))
|
||
(set-marker (car reuse) nil))
|
||
(setq reuse (cdr reuse)))))))
|
||
|
||
(defun replace-match-maybe-edit (newtext fixedcase literal noedit match-data)
|
||
"Make a replacement with `replace-match', editing `\\?'.
|
||
NEXTEXT, FIXEDCASE, LITERAL are just passed on. If NOEDIT is true, no
|
||
check for `\\?' is made to save time. MATCH-DATA is used for the
|
||
replacement. In case editing is done, it is changed to use markers.
|
||
|
||
The return value is non-NIL if there has been no `\\?' or NOEDIT was
|
||
passed in. If LITERAL is set, no checking is done, anyway."
|
||
(unless (or literal noedit)
|
||
(setq noedit t)
|
||
(while (string-match "\\(\\`\\|[^\\]\\)\\(\\\\\\\\\\)*\\(\\\\\\?\\)"
|
||
newtext)
|
||
(setq newtext
|
||
(read-input "Edit replacement string: "
|
||
(prog1
|
||
(cons
|
||
(replace-match "" t t newtext 3)
|
||
(1+ (match-beginning 3)))
|
||
(setq match-data
|
||
(replace-match-data
|
||
nil match-data match-data))))
|
||
noedit nil)))
|
||
(set-match-data match-data)
|
||
(replace-match newtext fixedcase literal)
|
||
noedit)
|
||
|
||
(defun perform-replace (from-string replacements
|
||
query-flag regexp-flag delimited-flag
|
||
&optional repeat-count map start end)
|
||
"Subroutine of `query-replace'. Its complexity handles interactive queries.
|
||
Don't use this in your own program unless you want to query and set the mark
|
||
just as `query-replace' does. Instead, write a simple loop like this:
|
||
|
||
(while (re-search-forward \"foo[ \\t]+bar\" nil t)
|
||
(replace-match \"foobar\" nil nil))
|
||
|
||
which will run faster and probably do exactly what you want. Please
|
||
see the documentation of `replace-match' to find out how to simulate
|
||
`case-replace'.
|
||
|
||
This function returns nil if and only if there were no matches to
|
||
make, or the user didn't cancel the call."
|
||
(or map (setq map query-replace-map))
|
||
(and query-flag minibuffer-auto-raise
|
||
(raise-frame (window-frame (minibuffer-window))))
|
||
(let ((nocasify (not (and case-fold-search case-replace
|
||
(string-equal from-string
|
||
(downcase from-string)))))
|
||
(case-fold-search (and case-fold-search
|
||
(string-equal from-string
|
||
(downcase from-string))))
|
||
(literal (or (not regexp-flag) (eq regexp-flag 'literal)))
|
||
(search-function (if regexp-flag 're-search-forward 'search-forward))
|
||
(search-string from-string)
|
||
(real-match-data nil) ; the match data for the current match
|
||
(next-replacement nil)
|
||
(noedit nil)
|
||
(keep-going t)
|
||
(stack nil)
|
||
(replace-count 0)
|
||
(nonempty-match nil)
|
||
|
||
;; If non-nil, it is marker saying where in the buffer to stop.
|
||
(limit nil)
|
||
|
||
;; Data for the next match. If a cons, it has the same format as
|
||
;; (match-data); otherwise it is t if a match is possible at point.
|
||
(match-again t)
|
||
|
||
(message
|
||
(if query-flag
|
||
(substitute-command-keys
|
||
"Query replacing %s with %s: (\\<query-replace-map>\\[help] for help) "))))
|
||
|
||
;; If region is active, in Transient Mark mode, operate on region.
|
||
(when start
|
||
(setq limit (copy-marker (max start end)))
|
||
(goto-char (min start end))
|
||
(deactivate-mark))
|
||
|
||
;; REPLACEMENTS is either a string, a list of strings, or a cons cell
|
||
;; containing a function and its first argument. The function is
|
||
;; called to generate each replacement like this:
|
||
;; (funcall (car replacements) (cdr replacements) replace-count)
|
||
;; It must return a string.
|
||
(cond
|
||
((stringp replacements)
|
||
(setq next-replacement replacements
|
||
replacements nil))
|
||
((stringp (car replacements)) ; If it isn't a string, it must be a cons
|
||
(or repeat-count (setq repeat-count 1))
|
||
(setq replacements (cons 'replace-loop-through-replacements
|
||
(vector repeat-count repeat-count
|
||
replacements replacements)))))
|
||
|
||
(if delimited-flag
|
||
(setq search-function 're-search-forward
|
||
search-string (concat "\\b"
|
||
(if regexp-flag from-string
|
||
(regexp-quote from-string))
|
||
"\\b")))
|
||
(push-mark)
|
||
(undo-boundary)
|
||
(unwind-protect
|
||
;; Loop finding occurrences that perhaps should be replaced.
|
||
(while (and keep-going
|
||
(not (or (eobp) (and limit (>= (point) limit))))
|
||
;; Use the next match if it is already known;
|
||
;; otherwise, search for a match after moving forward
|
||
;; one char if progress is required.
|
||
(setq real-match-data
|
||
(if (consp match-again)
|
||
(progn (goto-char (nth 1 match-again))
|
||
(replace-match-data t
|
||
real-match-data
|
||
match-again))
|
||
(and (or match-again
|
||
;; MATCH-AGAIN non-nil means we
|
||
;; accept an adjacent match. If
|
||
;; we don't, move one char to the
|
||
;; right. This takes us a
|
||
;; character too far at the end,
|
||
;; but this is undone after the
|
||
;; while-loop.
|
||
(progn
|
||
(forward-char 1)
|
||
(not (or (eobp)
|
||
(and limit (>= (point) limit))))))
|
||
(funcall search-function search-string limit t)
|
||
;; For speed, use only integers and
|
||
;; reuse the list used last time.
|
||
(replace-match-data t real-match-data)))))
|
||
;; Optionally ignore matches that have a read-only property.
|
||
(unless (and query-replace-skip-read-only
|
||
(text-property-not-all
|
||
(match-beginning 0) (match-end 0)
|
||
'read-only nil))
|
||
|
||
;; Record whether the match is nonempty, to avoid an infinite loop
|
||
;; repeatedly matching the same empty string.
|
||
(setq nonempty-match
|
||
(/= (nth 0 real-match-data) (nth 1 real-match-data)))
|
||
|
||
;; If the match is empty, record that the next one can't be
|
||
;; adjacent.
|
||
|
||
;; Otherwise, if matching a regular expression, do the next
|
||
;; match now, since the replacement for this match may
|
||
;; affect whether the next match is adjacent to this one.
|
||
;; If that match is empty, don't use it.
|
||
(setq match-again
|
||
(and nonempty-match
|
||
(or (not regexp-flag)
|
||
(and (looking-at search-string)
|
||
(let ((match (match-data)))
|
||
(and (/= (nth 0 match) (nth 1 match))
|
||
match))))))
|
||
|
||
;; Calculate the replacement string, if necessary.
|
||
(when replacements
|
||
(set-match-data real-match-data)
|
||
(setq next-replacement
|
||
(funcall (car replacements) (cdr replacements)
|
||
replace-count)
|
||
noedit nil))
|
||
(if (not query-flag)
|
||
(let ((inhibit-read-only
|
||
query-replace-skip-read-only))
|
||
(unless noedit
|
||
(replace-highlight (nth 0 real-match-data)
|
||
(nth 1 real-match-data)))
|
||
(setq noedit
|
||
(replace-match-maybe-edit
|
||
next-replacement nocasify literal
|
||
noedit real-match-data)
|
||
replace-count (1+ replace-count)))
|
||
(undo-boundary)
|
||
(let (done replaced key def)
|
||
;; Loop reading commands until one of them sets done,
|
||
;; which means it has finished handling this
|
||
;; occurrence. Any command that sets `done' should
|
||
;; leave behind proper match data for the stack.
|
||
;; Commands not setting `done' need to adjust
|
||
;; `real-match-data'.
|
||
(while (not done)
|
||
(set-match-data real-match-data)
|
||
(replace-highlight (match-beginning 0) (match-end 0))
|
||
;; Bind message-log-max so we don't fill up the message log
|
||
;; with a bunch of identical messages.
|
||
(let ((message-log-max nil))
|
||
(message message
|
||
(query-replace-descr from-string)
|
||
(query-replace-descr next-replacement)))
|
||
(setq key (read-event))
|
||
;; Necessary in case something happens during read-event
|
||
;; that clobbers the match data.
|
||
(set-match-data real-match-data)
|
||
(setq key (vector key))
|
||
(setq def (lookup-key map key))
|
||
;; Restore the match data while we process the command.
|
||
(cond ((eq def 'help)
|
||
(with-output-to-temp-buffer "*Help*"
|
||
(princ
|
||
(concat "Query replacing "
|
||
(if regexp-flag "regexp " "")
|
||
from-string " with "
|
||
next-replacement ".\n\n"
|
||
(substitute-command-keys
|
||
query-replace-help)))
|
||
(with-current-buffer standard-output
|
||
(help-mode))))
|
||
((eq def 'exit)
|
||
(setq keep-going nil)
|
||
(setq done t))
|
||
((eq def 'backup)
|
||
(if stack
|
||
(let ((elt (pop stack)))
|
||
(goto-char (nth 0 elt))
|
||
(setq replaced (nth 1 elt)
|
||
real-match-data
|
||
(replace-match-data
|
||
t real-match-data
|
||
(nth 2 elt))))
|
||
(message "No previous match")
|
||
(ding 'no-terminate)
|
||
(sit-for 1)))
|
||
((eq def 'act)
|
||
(or replaced
|
||
(setq noedit
|
||
(replace-match-maybe-edit
|
||
next-replacement nocasify literal
|
||
noedit real-match-data)
|
||
replace-count (1+ replace-count)))
|
||
(setq done t replaced t))
|
||
((eq def 'act-and-exit)
|
||
(or replaced
|
||
(setq noedit
|
||
(replace-match-maybe-edit
|
||
next-replacement nocasify literal
|
||
noedit real-match-data)
|
||
replace-count (1+ replace-count)))
|
||
(setq keep-going nil)
|
||
(setq done t replaced t))
|
||
((eq def 'act-and-show)
|
||
(if (not replaced)
|
||
(setq noedit
|
||
(replace-match-maybe-edit
|
||
next-replacement nocasify literal
|
||
noedit real-match-data)
|
||
replace-count (1+ replace-count)
|
||
real-match-data (replace-match-data
|
||
t real-match-data)
|
||
replaced t)))
|
||
((eq def 'automatic)
|
||
(or replaced
|
||
(setq noedit
|
||
(replace-match-maybe-edit
|
||
next-replacement nocasify literal
|
||
noedit real-match-data)
|
||
replace-count (1+ replace-count)))
|
||
(setq done t query-flag nil replaced t))
|
||
((eq def 'skip)
|
||
(setq done t))
|
||
((eq def 'recenter)
|
||
(recenter nil))
|
||
((eq def 'edit)
|
||
(let ((opos (point-marker)))
|
||
(setq real-match-data (replace-match-data
|
||
nil real-match-data
|
||
real-match-data))
|
||
(goto-char (match-beginning 0))
|
||
(save-excursion
|
||
(save-window-excursion
|
||
(recursive-edit)))
|
||
(goto-char opos)
|
||
(set-marker opos nil))
|
||
;; Before we make the replacement,
|
||
;; decide whether the search string
|
||
;; can match again just after this match.
|
||
(if (and regexp-flag nonempty-match)
|
||
(setq match-again (and (looking-at search-string)
|
||
(match-data)))))
|
||
;; Edit replacement.
|
||
((eq def 'edit-replacement)
|
||
(setq real-match-data (replace-match-data
|
||
nil real-match-data
|
||
real-match-data)
|
||
next-replacement
|
||
(read-input "Edit replacement string: "
|
||
next-replacement)
|
||
noedit nil)
|
||
(if replaced
|
||
(set-match-data real-match-data)
|
||
(setq noedit
|
||
(replace-match-maybe-edit
|
||
next-replacement nocasify literal noedit
|
||
real-match-data)
|
||
replaced t))
|
||
(setq done t))
|
||
|
||
((eq def 'delete-and-edit)
|
||
(replace-match "" t t)
|
||
(setq real-match-data (replace-match-data
|
||
nil real-match-data))
|
||
(replace-dehighlight)
|
||
(save-excursion (recursive-edit))
|
||
(setq replaced t))
|
||
;; Note: we do not need to treat `exit-prefix'
|
||
;; specially here, since we reread
|
||
;; any unrecognized character.
|
||
(t
|
||
(setq this-command 'mode-exited)
|
||
(setq keep-going nil)
|
||
(setq unread-command-events
|
||
(append (listify-key-sequence key)
|
||
unread-command-events))
|
||
(setq done t))))
|
||
;; Record previous position for ^ when we move on.
|
||
;; Change markers to numbers in the match data
|
||
;; since lots of markers slow down editing.
|
||
(push (list (point) replaced
|
||
;;; If the replacement has already happened, all we need is the
|
||
;;; current match start and end. We could get this with a trivial
|
||
;;; match like
|
||
;;; (save-excursion (goto-char (match-beginning 0))
|
||
;;; (search-forward (match-string 0))
|
||
;;; (match-data t))
|
||
;;; if we really wanted to avoid manually constructing match data.
|
||
;;; Adding current-buffer is necessary so that match-data calls can
|
||
;;; return markers which are appropriate for editing.
|
||
(if replaced
|
||
(list
|
||
(match-beginning 0)
|
||
(match-end 0)
|
||
(current-buffer))
|
||
(match-data t)))
|
||
stack)))))
|
||
|
||
;; The code preventing adjacent regexp matches in the condition
|
||
;; of the while-loop above will haven taken us one character
|
||
;; beyond the last replacement. Undo that.
|
||
(when (and regexp-flag (not match-again) (> replace-count 0))
|
||
(backward-char 1))
|
||
|
||
(replace-dehighlight))
|
||
(or unread-command-events
|
||
(message "Replaced %d occurrence%s"
|
||
replace-count
|
||
(if (= replace-count 1) "" "s")))
|
||
(and keep-going stack)))
|
||
|
||
(defcustom query-replace-highlight t
|
||
"*Non-nil means to highlight words during query replacement."
|
||
:type 'boolean
|
||
:group 'matching)
|
||
|
||
(defvar replace-overlay nil)
|
||
|
||
(defun replace-dehighlight ()
|
||
(and replace-overlay
|
||
(progn
|
||
(delete-overlay replace-overlay)
|
||
(setq replace-overlay nil))))
|
||
|
||
(defun replace-highlight (start end)
|
||
(and query-replace-highlight
|
||
(if replace-overlay
|
||
(move-overlay replace-overlay start end (current-buffer))
|
||
(setq replace-overlay (make-overlay start end))
|
||
(overlay-put replace-overlay 'face
|
||
(if (facep 'query-replace)
|
||
'query-replace 'region)))))
|
||
|
||
;; arch-tag: 16b4cd61-fd40-497b-b86f-b667c4cf88e4
|
||
;;; replace.el ends here
|