X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/3fe351072841becbb1902c19f784890949f41c1d..7095596ac3ece75b7fb98be7a47e4715a54842c2:/lisp/replace.el diff --git a/lisp/replace.el b/lisp/replace.el index 26e5875dc0..9e2d521baf 100644 --- a/lisp/replace.el +++ b/lisp/replace.el @@ -33,7 +33,7 @@ :type 'boolean :group 'matching) -(defcustom replace-character-fold nil +(defcustom replace-char-fold nil "Non-nil means replacement commands should do character folding in matches. This means, for instance, that \\=' will match a large variety of unicode quotes. @@ -324,7 +324,7 @@ If `replace-lax-whitespace' is non-nil, a space or spaces in the string to be replaced will match a sequence of whitespace chars defined by the regexp in `search-whitespace-regexp'. -If `replace-character-fold' is non-nil, matching uses character folding, +If `replace-char-fold' is non-nil, matching uses character folding, i.e. it ignores diacritics and other differences between equivalent character strings. @@ -383,7 +383,7 @@ If `replace-regexp-lax-whitespace' is non-nil, a space or spaces in the regexp to be replaced will match a sequence of whitespace chars defined by the regexp in `search-whitespace-regexp'. -This function is not affected by `replace-character-fold'. +This function is not affected by `replace-char-fold'. Third arg DELIMITED (prefix arg if interactive), if non-nil, means replace only matches surrounded by word boundaries. A negative prefix arg means @@ -474,7 +474,7 @@ If `replace-regexp-lax-whitespace' is non-nil, a space or spaces in the regexp to be replaced will match a sequence of whitespace chars defined by the regexp in `search-whitespace-regexp'. -This function is not affected by `replace-character-fold'. +This function is not affected by `replace-char-fold'. Third arg DELIMITED (prefix arg if interactive), if non-nil, means replace only matches that are surrounded by word boundaries. @@ -568,7 +568,7 @@ If `replace-lax-whitespace' is non-nil, a space or spaces in the string to be replaced will match a sequence of whitespace chars defined by the regexp in `search-whitespace-regexp'. -If `replace-character-fold' is non-nil, matching uses character folding, +If `replace-char-fold' is non-nil, matching uses character folding, i.e. it ignores diacritics and other differences between equivalent character strings. @@ -623,7 +623,7 @@ If `replace-regexp-lax-whitespace' is non-nil, a space or spaces in the regexp to be replaced will match a sequence of whitespace chars defined by the regexp in `search-whitespace-regexp'. -This function is not affected by `replace-character-fold' +This function is not affected by `replace-char-fold' 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's @@ -1832,6 +1832,8 @@ 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 in this buffer with no more questions, ^ to move point back to previous match, +u to undo previous replacement, +U to undo all replacements, E to edit the replacement string. In multi-buffer replacements type `Y' to replace all remaining matches in all remaining buffers with no more questions, @@ -1861,6 +1863,8 @@ in the current buffer." (define-key map "\C-l" 'recenter) (define-key map "!" 'automatic) (define-key map "^" 'backup) + (define-key map "u" 'undo) + (define-key map "U" 'undo-all) (define-key map "\C-h" 'help) (define-key map [f1] 'help) (define-key map [help] 'help) @@ -1886,7 +1890,7 @@ The valid answers include `act', `skip', `act-and-show', `act-and-exit', `exit', `exit-prefix', `recenter', `scroll-up', `scroll-down', `scroll-other-window', `scroll-other-window-down', `edit', `edit-replacement', `delete-and-edit', `automatic', -`backup', `quit', and `help'. +`backup', `undo', `undo-all', `quit', and `help'. This keymap is used by `y-or-n-p' as well as `query-replace'.") @@ -2051,9 +2055,9 @@ It is called with three arguments, as if it were ;; used after `recursive-edit' might override them. (let* ((isearch-regexp regexp-flag) (isearch-regexp-function (or delimited-flag - (and replace-character-fold + (and replace-char-fold (not regexp-flag) - #'character-fold-to-regexp))) + #'char-fold-to-regexp))) (isearch-lax-whitespace replace-lax-whitespace) (isearch-regexp-lax-whitespace @@ -2142,6 +2146,10 @@ It must return a string." (noedit nil) (keep-going t) (stack nil) + (search-string-replaced nil) ; last string matching `from-string' + (next-replacement-replaced nil) ; replacement string + ; (substituted regexp) + (last-was-undo) (replace-count 0) (skip-read-only-count 0) (skip-filtered-count 0) @@ -2338,8 +2346,28 @@ It must return a string." (match-beginning 0) (match-end 0) start end search-string regexp-flag delimited-flag case-fold-search backward) - ;; Bind message-log-max so we don't fill up the message log - ;; with a bunch of identical messages. + ;; Obtain the matched groups: needed only when + ;; regexp-flag non nil. + (when (and last-was-undo regexp-flag) + (setq last-was-undo nil + real-match-data + (save-excursion + (goto-char (match-beginning 0)) + (looking-at search-string) + (match-data t real-match-data)))) + ;; Matched string and next-replacement-replaced + ;; stored in stack. + (setq search-string-replaced (buffer-substring-no-properties + (match-beginning 0) + (match-end 0)) + next-replacement-replaced + (query-replace-descr + (save-match-data + (set-match-data real-match-data) + (match-substitute-replacement + next-replacement nocasify literal)))) + ;; Bind message-log-max so we don't fill up the + ;; message log with a bunch of identical messages. (let ((message-log-max nil) (replacement-presentation (if query-replace-show-replacement @@ -2352,8 +2380,8 @@ It must return a string." (query-replace-descr from-string) (query-replace-descr replacement-presentation))) (setq key (read-event)) - ;; Necessary in case something happens during read-event - ;; that clobbers the match data. + ;; 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)) @@ -2364,7 +2392,8 @@ It must return a string." (concat "Query replacing " (if delimited-flag (or (and (symbolp delimited-flag) - (get delimited-flag 'isearch-message-prefix)) + (get delimited-flag + 'isearch-message-prefix)) "word ") "") (if regexp-flag "regexp " "") (if backward "backward " "") @@ -2391,6 +2420,73 @@ It must return a string." (message "No previous match") (ding 'no-terminate) (sit-for 1))) + ((or (eq def 'undo) (eq def 'undo-all)) + (if (null stack) + (progn + (message "Nothing to undo") + (ding 'no-terminate) + (sit-for 1)) + (let ((stack-idx 0) + (stack-len (length stack)) + (num-replacements 0) + search-string + next-replacement) + (while (and (< stack-idx stack-len) + stack + (null replaced)) + (let* ((elt (nth stack-idx stack))) + (setq + stack-idx (1+ stack-idx) + replaced (nth 1 elt) + ;; Bind swapped values + ;; (search-string <--> replacement) + search-string (nth (if replaced 4 3) elt) + next-replacement (nth (if replaced 3 4) elt) + search-string-replaced search-string + next-replacement-replaced next-replacement) + + (when (and (= stack-idx stack-len) + (null replaced) + (zerop num-replacements)) + (message "Nothing to undo") + (ding 'no-terminate) + (sit-for 1)) + + (when replaced + (setq stack (nthcdr stack-idx stack)) + (goto-char (nth 0 elt)) + (set-match-data (nth 2 elt)) + (setq real-match-data + (save-excursion + (goto-char (match-beginning 0)) + (looking-at search-string) + (match-data t (nth 2 elt))) + noedit + (replace-match-maybe-edit + next-replacement nocasify literal + noedit real-match-data backward) + replace-count (1- replace-count) + real-match-data + (save-excursion + (goto-char (match-beginning 0)) + (looking-at next-replacement) + (match-data t (nth 2 elt)))) + ;; Set replaced nil to keep in loop + (when (eq def 'undo-all) + (setq replaced nil + stack-len (- stack-len stack-idx) + stack-idx 0 + num-replacements + (1+ num-replacements)))))) + (when (and (eq def 'undo-all) + (null (zerop num-replacements))) + (message "Undid %d %s" num-replacements + (if (= num-replacements 1) + "replacement" + "replacements")) + (ding 'no-terminate) + (sit-for 1))) + (setq replaced nil last-was-undo t))) ((eq def 'act) (or replaced (setq noedit @@ -2513,9 +2609,12 @@ It must return a string." (match-beginning 0) (match-end 0) (current-buffer)) - (match-data t))) - stack)))))) - + (match-data t)) + search-string-replaced + next-replacement-replaced) + stack) + (setq next-replacement-replaced nil + search-string-replaced nil)))))) (replace-dehighlight)) (or unread-command-events (message "Replaced %d occurrence%s%s"