;;; replace.el --- replace commands for Emacs.
-;; Copyright (C) 1985, 86, 87, 92, 94, 96, 1997 Free Software Foundation, Inc.
+;; Copyright (C) 1985, 86, 87, 92, 94, 96, 1997, 2000
+;; Free Software Foundation, Inc.
;; This file is part of GNU Emacs.
(setq to (read-from-minibuffer (format "%s %s with: " string from)
nil nil nil
query-replace-to-history-variable from t))
- (list from to current-prefix-arg)))
+ (if (and transient-mark-mode mark-active)
+ (list from to current-prefix-arg (region-beginning) (region-end))
+ (list from to current-prefix-arg nil nil))))
-(defun query-replace (from-string to-string &optional arg)
+(defun query-replace (from-string to-string &optional delimited start end)
"Replace some occurrences of FROM-STRING with TO-STRING.
As each match is found, the user must type a character saying
what to do with it. For directions, type \\[help-command] at that time.
string is used as FROM-STRING--you don't have to specify it with the
minibuffer.
-Preserves case in each replacement if `case-replace' and `case-fold-search'
+Replacement transfers the case of the old text to the new text,
+if `case-replace' and `case-fold-search'
are non-nil and FROM-STRING has no uppercase letters.
\(Preserving case means that if the string matched is all caps, or capitalized,
then its replacement is upcased or capitalized.)
Third arg DELIMITED (prefix arg if interactive), if non-nil, means replace
only matches surrounded by word boundaries.
+Fourth and fifth arg START and END specify the region to operate on.
To customize possible responses, change the \"bindings\" in `query-replace-map'."
(interactive (query-replace-read-args "Query replace" nil))
- (perform-replace from-string to-string t nil arg))
+ (perform-replace from-string to-string start end t nil delimited))
(define-key esc-map "%" 'query-replace)
-(defun query-replace-regexp (regexp to-string &optional arg)
+(defun query-replace-regexp (regexp to-string &optional delimited start end)
"Replace some things after point matching REGEXP with TO-STRING.
As each match is found, the user must type a character saying
what to do with it. For directions, type \\[help-command] at that time.
Preserves case in each replacement if `case-replace' and `case-fold-search'
are non-nil and REGEXP has no uppercase letters.
+
Third arg DELIMITED (prefix arg if interactive), if non-nil, means replace
only matches surrounded by word boundaries.
+Fourth and fifth arg START and END specify the region to operate on.
+
In TO-STRING, `\\&' stands for whatever matched the whole of REGEXP,
and `\\=\\N' (where N is a digit) stands for
whatever what matched the Nth `\\(...\\)' in REGEXP."
(interactive (query-replace-read-args "Query replace regexp" t))
- (perform-replace regexp to-string t t arg))
+ (perform-replace regexp to-string start end t t delimited))
(define-key esc-map [?\C-%] 'query-replace-regexp)
-(defun map-query-replace-regexp (regexp to-strings &optional arg)
+(defun query-replace-regexp-eval (regexp to-expr &optional delimited start end)
+ "Replace some things after point matching REGEXP with the result of TO-EXPR.
+As each match is found, the user must type a character saying
+what to do with it. For directions, type \\[help-command] at that time.
+
+TO-EXPR is a Lisp expression evaluated to compute each replacement. It may
+reference `replace-count' to get the number of replacements already made.
+If the result of TO-EXPR is not a string, it is converted to one using
+`prin1-to-string' with the NOESCAPE argument (which see).
+
+For convenience, when entering TO-EXPR interactively, you can use `\\&' or
+`\\0'to stand for whatever matched the whole of REGEXP, and `\\=\\N' (where
+N is a digit) stands for whatever what matched the Nth `\\(...\\)' in REGEXP.
+Use `\\#&' or `\\#N' if you want a number instead of a string.
+
+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.
+
+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.
+
+Preserves case in each replacement if `case-replace' and `case-fold-search'
+are non-nil and REGEXP has no uppercase letters.
+
+Third arg DELIMITED (prefix arg if interactive), if non-nil, means replace
+only matches surrounded by word boundaries.
+Fourth and fifth arg START and END specify the region to operate on."
+ (interactive
+ (let (from to start end)
+ (when (and transient-mark-mode mark-active)
+ (setq start (region-beginning)
+ end (region-end)))
+ (if query-replace-interactive
+ (setq from (car regexp-search-ring))
+ (setq from (read-from-minibuffer "Query replace regexp: "
+ nil nil nil
+ query-replace-from-history-variable
+ nil t)))
+ (setq to (list (read-from-minibuffer
+ (format "Query replace regexp %s with eval: " from)
+ nil nil t query-replace-to-history-variable from t)))
+ ;; We make TO a list because replace-match-string-symbols requires one,
+ ;; and the user might enter a single token.
+ (replace-match-string-symbols to)
+ (list from (car to) start end current-prefix-arg)))
+ (perform-replace regexp (cons 'replace-eval-replacement to-expr)
+ start end t t delimited))
+
+(defun map-query-replace-regexp (regexp to-strings &optional n start end)
"Replace some matches for REGEXP with various strings, in rotation.
The second argument TO-STRINGS contains the replacement strings, separated
by spaces. This command works like `query-replace-regexp' except
regexp is used as REGEXP--you don't have to specify it with the minibuffer.
A prefix argument N says to use each replacement string N times
-before rotating to the next."
+before rotating to the next.
+Fourth and fifth arg START and END specify the region to operate on."
(interactive
- (let (from to)
+ (let (from to start end)
+ (when (and transient-mark-mode mark-active)
+ (setq start (region-beginning)
+ end (region-end)))
(setq from (if query-replace-interactive
(car regexp-search-ring)
(read-from-minibuffer "Map query replace (regexp): "
from)
nil nil nil
'query-replace-history from t))
- (list from to current-prefix-arg)))
+ (list from to start end current-prefix-arg)))
(let (replacements)
(if (listp to-strings)
(setq replacements to-strings)
(1+ (string-match " " to-strings))))
(setq replacements (append replacements (list to-strings))
to-strings ""))))
- (perform-replace regexp replacements t t nil arg)))
+ (perform-replace regexp replacements start end t t nil n)))
-(defun replace-string (from-string to-string &optional delimited)
+(defun replace-string (from-string to-string &optional delimited start end)
"Replace occurrences of FROM-STRING with TO-STRING.
Preserve case in each match if `case-replace' and `case-fold-search'
are non-nil and FROM-STRING has no uppercase letters.
Third arg DELIMITED (prefix arg if interactive), if non-nil, means replace
only matches surrounded by word boundaries.
+Fourth and fifth arg START and END specify the region to operate on.
If `query-replace-interactive' is non-nil, the last incremental search
string is used as FROM-STRING--you don't have to specify it with the
\(You may need a more complex loop if FROM-STRING can match the null string
and TO-STRING is also null.)"
(interactive (query-replace-read-args "Replace string" nil))
- (perform-replace from-string to-string nil nil delimited))
+ (perform-replace from-string to-string start end nil nil delimited))
-(defun replace-regexp (regexp to-string &optional delimited)
+(defun replace-regexp (regexp to-string &optional delimited start end)
"Replace things after point matching REGEXP with TO-STRING.
Preserve case in each match if `case-replace' and `case-fold-search'
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.
+Fourth and fifth arg START and END specify the region to operate on.
+
In TO-STRING, `\\&' stands for whatever matched the whole of REGEXP,
and `\\=\\N' (where N is a digit) stands for
whatever what matched the Nth `\\(...\\)' in REGEXP.
-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.
-
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.
(replace-match TO-STRING nil nil))
which will run faster and will not set the mark or print anything."
(interactive (query-replace-read-args "Replace regexp" t))
- (perform-replace regexp to-string nil t delimited))
+ (perform-replace regexp to-string start end nil t delimited))
\f
(defvar regexp-history nil
"History list for some commands that read regular expressions.")
(defun keep-lines (regexp)
"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."
+Applies to all lines after point.
+
+If REGEXP contains upper case characters (excluding those preceded by `\\'),
+the matching is case-sensitive."
(interactive (list (read-from-minibuffer
"Keep lines (containing match for regexp): "
nil nil nil 'regexp-history nil t)))
(save-excursion
(or (bolp) (forward-line 1))
- (let ((start (point)))
+ (let ((start (point))
+ (case-fold-search (and case-fold-search
+ (isearch-no-upper-case-p regexp t))))
(while (not (eobp))
;; Start is first char not preserved by previous match.
(if (not (re-search-forward regexp nil 'move))
(defun flush-lines (regexp)
"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."
+Applies to lines after point.
+
+If REGEXP contains upper case characters (excluding those preceded by `\\'),
+the matching is case-sensitive."
(interactive (list (read-from-minibuffer
"Flush lines (containing match for regexp): "
nil nil nil 'regexp-history nil t)))
- (save-excursion
- (while (and (not (eobp))
- (re-search-forward regexp nil t))
- (delete-region (save-excursion (goto-char (match-beginning 0))
- (beginning-of-line)
- (point))
- (progn (forward-line 1) (point))))))
+ (let ((case-fold-search (and case-fold-search
+ (isearch-no-upper-case-p regexp t))))
+ (save-excursion
+ (while (and (not (eobp))
+ (re-search-forward regexp nil t))
+ (delete-region (save-excursion (goto-char (match-beginning 0))
+ (beginning-of-line)
+ (point))
+ (progn (forward-line 1) (point)))))))
(defalias 'count-matches 'how-many)
(defun how-many (regexp)
- "Print number of matches for REGEXP following point."
- (interactive (list(read-from-minibuffer
- "How many matches for (regexp): "
- nil nil nil 'regexp-history nil t)))
- (let ((count 0) opoint)
+ "Print number of matches for REGEXP following point.
+
+If REGEXP contains upper case characters (excluding those preceded by `\\'),
+the matching is case-sensitive."
+ (interactive (list (read-from-minibuffer
+ "How many matches for (regexp): "
+ nil nil nil 'regexp-history nil t)))
+ (let ((count 0) opoint
+ (case-fold-search (and case-fold-search
+ (isearch-no-upper-case-p regexp t))))
(save-excursion
(while (and (not (eobp))
(progn (setq opoint (point))
(define-key query-replace-map "\e" 'exit-prefix)
(define-key query-replace-map [escape] 'exit-prefix)
-(defun perform-replace (from-string replacements
+(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))
+ ;;
+ ;; 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))))))))
+ (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-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 perform-replace (from-string replacements start end
query-flag regexp-flag delimited-flag
&optional repeat-count map)
"Subroutine of `query-replace'. Its complexity handles interactive queries.
(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 (not regexp-flag))
(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)
- (replacement-index 0)
(keep-going t)
(stack nil)
- (next-rotate-count 0)
(replace-count 0)
(nonempty-match nil)
"Query replacing %s with %s: (\\<query-replace-map>\\[help] for help) "))))
;; If region is active, in Transient Mark mode, operate on region.
- (if (and transient-mark-mode mark-active)
- (progn
- (setq limit (copy-marker (region-end)))
- (goto-char (region-beginning))
- (deactivate-mark)))
- (if (stringp replacements)
- (setq next-replacement replacements)
- (or repeat-count (setq repeat-count 1)))
+ (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"
(progn (goto-char (nth 1 match-again))
match-again)
(and (or match-again
- (progn
- (forward-char 1)
- (not (eobp))))
+ ;; MATCH-AGAIN nil means in the
+ ;; regexp case that there's no
+ ;; match adjacent to the last
+ ;; one. So, we could move
+ ;; forward, but we don't want to
+ ;; because that moves point 1
+ ;; position after the last
+ ;; replacement when everything
+ ;; has been done.
+ regexp-flag
+ (progn (forward-char 1) (not (eobp))))
(funcall search-function search-string limit t)
;; For speed, use only integers and
;; reuse the list used last time.
(and (looking-at search-string)
(match-data)))))
- ;; If time for a change, advance to next replacement string.
- (if (and (listp replacements)
- (= next-rotate-count replace-count))
- (progn
- (setq next-rotate-count
- (+ next-rotate-count repeat-count))
- (setq next-replacement (nth replacement-index replacements))
- (setq replacement-index (% (1+ replacement-index) (length replacements)))))
+ ;; Calculate the replacement string, if necessary.
+ (when replacements
+ (set-match-data real-match-data)
+ (setq next-replacement
+ (funcall (car replacements) (cdr replacements)
+ replace-count)))
(if (not query-flag)
(progn
(set-match-data real-match-data)
((eq def 'recenter)
(recenter nil))
((eq def 'edit)
- (goto-char (match-beginning 0))
- (funcall search-function search-string limit t)
- (setq real-match-data (match-data))
- (save-excursion (recursive-edit))
+ (let ((opos (point-marker)))
+ (goto-char (match-beginning 0))
+ (save-excursion
+ (funcall search-function search-string limit t)
+ (setq real-match-data (match-data)))
+ (save-excursion (recursive-edit))
+ (goto-char opos))
(set-match-data real-match-data)
;; Before we make the replacement,
;; decide whether the search string
HCoop / bpt / emacs.git / blobdiff