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3354 lines
136 KiB
EmacsLisp
3354 lines
136 KiB
EmacsLisp
;;; isearch.el --- incremental search minor mode -*- lexical-binding: t -*-
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;; Copyright (C) 1992-1997, 1999-2018 Free Software Foundation, Inc.
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;; Author: Daniel LaLiberte <liberte@cs.uiuc.edu>
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;; Maintainer: emacs-devel@gnu.org
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;; Keywords: matching
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;; Package: emacs
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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 3 of the License, or
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;; (at your option) 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. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Instructions
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;; For programmed use of isearch-mode, e.g. calling (isearch-forward),
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;; isearch-mode behaves modally and does not return until the search
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;; is completed. It uses a recursive-edit to behave this way.
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;; The key bindings active within isearch-mode are defined below in
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;; `isearch-mode-map'. Also see minibuffer-local-isearch-map
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;; for bindings active during `isearch-edit-string'.
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;; isearch-mode should work even if you switch windows with the mouse,
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;; in which case isearch-mode is terminated automatically before the
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;; switch.
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;; The search ring and completion commands automatically put you in
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;; the minibuffer to edit the string. This gives you a chance to
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;; modify the search string before executing the search. There are
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;; three commands to terminate the editing: C-s and C-r exit the
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;; minibuffer and search forward and reverse respectively, while C-m
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;; exits and searches in the last search direction.
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;; Exiting immediately from isearch uses isearch-edit-string instead
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;; of nonincremental-search, if search-nonincremental-instead is non-nil.
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;; The name of this option should probably be changed if we decide to
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;; keep the behavior. No point in forcing nonincremental search until
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;; the last possible moment.
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;;; Code:
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(eval-when-compile (require 'cl-lib))
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;; Some additional options and constants.
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(defgroup isearch nil
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"Incremental search minor mode."
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:link '(emacs-commentary-link "isearch")
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:link '(custom-manual "(emacs)Incremental Search")
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:prefix "isearch-"
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:prefix "search-"
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:group 'matching)
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(defcustom search-exit-option t
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"Non-nil means random control characters terminate incremental search."
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:type 'boolean)
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(defcustom search-slow-window-lines 1
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"Number of lines in slow search display windows.
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These are the short windows used during incremental search on slow terminals.
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Negative means put the slow search window at the top (normally it's at bottom)
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and the value is minus the number of lines."
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:type 'integer)
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(defcustom search-slow-speed 1200
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"Highest terminal speed at which to use \"slow\" style incremental search.
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This is the style where a one-line window is created to show the line
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that the search has reached."
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:type 'integer)
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(defcustom search-upper-case 'not-yanks
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"If non-nil, upper case chars disable case fold searching.
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That is, upper and lower case chars must match exactly.
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This applies no matter where the chars come from, but does not
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apply to chars in regexps that are prefixed with `\\'.
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If this value is `not-yanks', text yanked into the search string
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in Isearch mode is always downcased."
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:type '(choice (const :tag "off" nil)
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(const not-yanks)
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(other :tag "on" t)))
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(defcustom search-nonincremental-instead t
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"If non-nil, do a nonincremental search instead of exiting immediately.
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This affects the behavior of `isearch-exit' and any key bound to that
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command: if this variable is nil, `isearch-exit' always exits the search;
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if the value is non-nil, and the search string is empty, `isearch-exit'
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starts a nonincremental search instead. (Actually, `isearch-edit-string'
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is called to let you enter the search string, and RET terminates editing
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and does a nonincremental search.)"
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:type 'boolean)
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(defcustom search-whitespace-regexp (purecopy "\\s-+")
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"If non-nil, regular expression to match a sequence of whitespace chars.
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When you enter a space or spaces in the incremental search, it
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will match any sequence matched by this regexp. As an exception,
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spaces are treated normally in regexp incremental search if they
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occur in a regexp construct like [...] or *, + or ?.
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If the value is a string, it applies to both ordinary and
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regexp incremental search. If the value is nil, or
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`isearch-lax-whitespace' is nil for ordinary incremental search, or
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`isearch-regexp-lax-whitespace' is nil for regexp incremental search,
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then each space you type matches literally, against one space.
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You might want to use something like \"[ \\t\\r\\n]+\" instead.
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In the Customization buffer, that is `[' followed by a space,
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a tab, a carriage return (control-M), a newline, and `]+'."
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:type '(choice (const :tag "Match Spaces Literally" nil)
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regexp)
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:version "24.3")
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(defcustom search-invisible 'open
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"If t incremental search/query-replace can match hidden text.
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A nil value means don't match invisible text.
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When the value is `open', if the text matched is made invisible by
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an overlay having a non-nil `invisible' property, and that overlay
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has a non-nil property `isearch-open-invisible', then incremental
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search will show the hidden text. (This applies when using `outline.el'
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and `hideshow.el'.)
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To temporarily change the value for an active incremental search,
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use \\<isearch-mode-map>\\[isearch-toggle-invisible].
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See also the related option `isearch-hide-immediately'.
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See also `reveal-mode' if you want overlays to automatically be opened
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whenever point is in one of them."
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:type '(choice (const :tag "Match hidden text" t)
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(const :tag "Open overlays" open)
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(const :tag "Don't match hidden text" nil)))
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(defcustom isearch-hide-immediately t
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"If non-nil, re-hide an invisible match right away.
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This variable makes a difference when `search-invisible' is set to `open'.
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If non-nil, invisible matches are re-hidden as soon as the match moves
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off the invisible text surrounding the match.
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If nil then do not re-hide opened invisible text when the match moves.
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Whatever the value, all opened invisible text is hidden again after exiting
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the search, with the exception of the last successful match, if any."
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:type 'boolean)
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(defcustom isearch-resume-in-command-history nil
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"If non-nil, `isearch-resume' commands are added to the command history.
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This allows you to resume earlier Isearch sessions through the
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command history."
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:type 'boolean)
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(defvar isearch-mode-hook nil
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"Function(s) to call after starting up an incremental search.")
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(defvar isearch-update-post-hook nil
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"Function(s) to call after isearch has found matches in the buffer.")
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(defvar isearch-mode-end-hook nil
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"Function(s) to call after terminating an incremental search.
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When these functions are called, `isearch-mode-end-hook-quit'
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is non-nil if the user quits the search.")
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(defvar isearch-mode-end-hook-quit nil
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"Non-nil while running `isearch-mode-end-hook' if the user quits the search.")
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(defvar isearch-message-function nil
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"Function to call to display the search prompt.
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If nil, use function `isearch-message'.")
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(defvar isearch-wrap-function nil
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"Function to call to wrap the search when search is failed.
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If nil, move point to the beginning of the buffer for a forward search,
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or to the end of the buffer for a backward search.")
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(defvar isearch-push-state-function nil
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"Function to save a function restoring the mode-specific Isearch state
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to the search status stack.")
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(defvar isearch-filter-predicate #'isearch-filter-visible
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"Predicate that filters the search hits that would normally be available.
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Search hits that dissatisfy the predicate are skipped. The function
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has two arguments: the positions of start and end of text matched by
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the search. If this function returns nil, continue searching without
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stopping at this match.
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If you use `add-function' to modify this variable, you can use the
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`isearch-message-prefix' advice property to specify the prefix string
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displayed in the search message.")
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;; Search ring.
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(defvar search-ring nil
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"List of search string sequences.")
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(defvar regexp-search-ring nil
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"List of regular expression search string sequences.")
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(defcustom search-ring-max 16
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"Maximum length of search ring before oldest elements are thrown away."
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:type 'integer)
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(defcustom regexp-search-ring-max 16
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"Maximum length of regexp search ring before oldest elements are thrown away."
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:type 'integer)
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(defvar search-ring-yank-pointer nil
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"Index in `search-ring' of last string reused.
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It is nil if none yet.")
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(defvar regexp-search-ring-yank-pointer nil
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"Index in `regexp-search-ring' of last string reused.
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It is nil if none yet.")
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(defcustom search-ring-update nil
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"Non-nil if advancing or retreating in the search ring should cause search.
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Default value, nil, means edit the string instead."
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:type 'boolean)
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(autoload 'char-fold-to-regexp "char-fold")
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(defcustom search-default-mode nil
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"Default mode to use when starting isearch.
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Value is nil, t, or a function.
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If nil, default to literal searches (note that `case-fold-search'
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and `isearch-lax-whitespace' may still be applied).\\<isearch-mode-map>
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If t, default to regexp searches (as if typing `\\[isearch-toggle-regexp]' during
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isearch).
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If a function, use that function as an `isearch-regexp-function'.
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Example functions (and the keys to toggle them during isearch)
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are `word-search-regexp' \(`\\[isearch-toggle-word]'), `isearch-symbol-regexp'
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\(`\\[isearch-toggle-symbol]'), and `char-fold-to-regexp' \(`\\[isearch-toggle-char-fold]')."
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;; :type is set below by `isearch-define-mode-toggle'.
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:type '(choice (const :tag "Literal search" nil)
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(const :tag "Regexp search" t)
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(function :tag "Other"))
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:version "25.1")
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;;; isearch highlight customization.
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(defcustom search-highlight t
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"Non-nil means incremental search highlights the current match."
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:type 'boolean)
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(defface isearch
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'((((class color) (min-colors 88) (background light))
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;; The background must not be too dark, for that means
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;; the character is hard to see when the cursor is there.
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(:background "magenta3" :foreground "lightskyblue1"))
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(((class color) (min-colors 88) (background dark))
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(:background "palevioletred2" :foreground "brown4"))
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(((class color) (min-colors 16))
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(:background "magenta4" :foreground "cyan1"))
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(((class color) (min-colors 8))
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(:background "magenta4" :foreground "cyan1"))
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(t (:inverse-video t)))
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"Face for highlighting Isearch matches."
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:group 'isearch
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:group 'basic-faces)
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(defvar isearch-face 'isearch)
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(defface isearch-fail
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'((((class color) (min-colors 88) (background light))
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(:background "RosyBrown1"))
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(((class color) (min-colors 88) (background dark))
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(:background "red4"))
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(((class color) (min-colors 16))
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(:background "red"))
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(((class color) (min-colors 8))
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(:background "red"))
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(((class color grayscale))
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:foreground "grey")
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(t (:inverse-video t)))
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"Face for highlighting failed part in Isearch echo-area message."
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:version "23.1")
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(defcustom isearch-lazy-highlight t
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"Controls the lazy-highlighting during incremental search.
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When non-nil, all text in the buffer matching the current search
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string is highlighted lazily (see `lazy-highlight-initial-delay'
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and `lazy-highlight-interval').
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When multiple windows display the current buffer, the
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highlighting is displayed only on the selected window, unless
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this variable is set to the symbol `all-windows'."
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:type '(choice boolean
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(const :tag "On, and applied to all windows" all-windows))
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:group 'lazy-highlight
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:group 'isearch)
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;;; Lazy highlight customization.
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(defgroup lazy-highlight nil
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"Lazy highlighting feature for matching strings."
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:prefix "lazy-highlight-"
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:version "21.1"
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:group 'isearch
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:group 'matching)
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(define-obsolete-variable-alias 'isearch-lazy-highlight-cleanup
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'lazy-highlight-cleanup
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"22.1")
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(defcustom lazy-highlight-cleanup t
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"Controls whether to remove extra highlighting after a search.
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If this is nil, extra highlighting can be \"manually\" removed with
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\\[lazy-highlight-cleanup]."
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:type 'boolean
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:group 'lazy-highlight)
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(define-obsolete-variable-alias 'isearch-lazy-highlight-initial-delay
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'lazy-highlight-initial-delay
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"22.1")
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(defcustom lazy-highlight-initial-delay 0.25
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"Seconds to wait before beginning to lazily highlight all matches."
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:type 'number
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:group 'lazy-highlight)
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(define-obsolete-variable-alias 'isearch-lazy-highlight-interval
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'lazy-highlight-interval
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"22.1")
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(defcustom lazy-highlight-interval 0 ; 0.0625
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"Seconds between lazily highlighting successive matches."
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:type 'number
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:group 'lazy-highlight)
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(define-obsolete-variable-alias 'isearch-lazy-highlight-max-at-a-time
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'lazy-highlight-max-at-a-time
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"22.1")
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(defcustom lazy-highlight-max-at-a-time nil ; 20 (bug#25751)
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"Maximum matches to highlight at a time (for `lazy-highlight').
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Larger values may reduce Isearch's responsiveness to user input;
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smaller values make matches highlight slowly.
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A value of nil means highlight all matches shown on the screen."
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:type '(choice (const :tag "All" nil)
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(integer :tag "Some"))
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:group 'lazy-highlight)
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(defface lazy-highlight
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'((((class color) (min-colors 88) (background light))
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(:background "paleturquoise"))
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(((class color) (min-colors 88) (background dark))
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(:background "paleturquoise4"))
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(((class color) (min-colors 16))
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(:background "turquoise3"))
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(((class color) (min-colors 8))
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(:background "turquoise3"))
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(t (:underline t)))
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"Face for lazy highlighting of matches other than the current one."
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:group 'lazy-highlight
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:group 'basic-faces)
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;; Define isearch help map.
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(defvar isearch-help-map
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(let ((map (make-sparse-keymap)))
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(define-key map (char-to-string help-char) 'isearch-help-for-help)
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(define-key map [help] 'isearch-help-for-help)
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(define-key map [f1] 'isearch-help-for-help)
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(define-key map "?" 'isearch-help-for-help)
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(define-key map "b" 'isearch-describe-bindings)
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(define-key map "k" 'isearch-describe-key)
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(define-key map "m" 'isearch-describe-mode)
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(define-key map "q" 'help-quit)
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map)
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"Keymap for characters following the Help key for Isearch mode.")
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(eval-when-compile (require 'help-macro))
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(make-help-screen isearch-help-for-help-internal
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(purecopy "Type a help option: [bkm] or ?")
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"You have typed %THIS-KEY%, the help character. Type a Help option:
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\(Type \\<help-map>\\[help-quit] to exit the Help command.)
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b Display all Isearch key bindings.
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k KEYS Display full documentation of Isearch key sequence.
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m Display documentation of Isearch mode.
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You can't type here other help keys available in the global help map,
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but outside of this help window when you type them in Isearch mode,
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they exit Isearch mode before displaying global help."
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isearch-help-map)
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(defvar isearch--display-help-action '(nil (inhibit-same-window . t)))
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(defun isearch-help-for-help ()
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"Display Isearch help menu."
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(interactive)
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(let ((display-buffer-overriding-action isearch--display-help-action))
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(isearch-help-for-help-internal))
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(isearch-update))
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(defun isearch-describe-bindings ()
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"Show a list of all keys defined in Isearch mode, and their definitions.
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This is like `describe-bindings', but displays only Isearch keys."
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(interactive)
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(let ((display-buffer-overriding-action isearch--display-help-action))
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(with-help-window "*Help*"
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(with-current-buffer standard-output
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(princ "Isearch Mode Bindings:\n")
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(princ (substitute-command-keys "\\{isearch-mode-map}"))))))
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(defun isearch-describe-key ()
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"Display documentation of the function invoked by isearch key."
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(interactive)
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(let ((display-buffer-overriding-action isearch--display-help-action))
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(call-interactively 'describe-key))
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(isearch-update))
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(defun isearch-describe-mode ()
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"Display documentation of Isearch mode."
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(interactive)
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(let ((display-buffer-overriding-action isearch--display-help-action))
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(describe-function 'isearch-forward))
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(isearch-update))
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(defalias 'isearch-mode-help 'isearch-describe-mode)
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;; Define isearch-mode keymap.
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(defvar isearch-mode-map
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(let ((i 0)
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(map (make-keymap)))
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(or (char-table-p (nth 1 map))
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(error "The initialization of isearch-mode-map must be updated"))
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;; Make all multibyte characters search for themselves.
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(set-char-table-range (nth 1 map) (cons #x100 (max-char))
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'isearch-printing-char)
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;; Single-byte printing chars extend the search string by default.
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(setq i ?\s)
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(while (< i 256)
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(define-key map (vector i) 'isearch-printing-char)
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(setq i (1+ i)))
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;; To handle local bindings with meta char prefix keys, define
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;; another full keymap. This must be done for any other prefix
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;; keys as well, one full keymap per char of the prefix key. It
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;; would be simpler to disable the global keymap, and/or have a
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;; default local key binding for any key not otherwise bound.
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(let ((meta-map (make-sparse-keymap)))
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(define-key map (char-to-string meta-prefix-char) meta-map))
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;; Several non-printing chars change the searching behavior.
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(define-key map "\C-s" 'isearch-repeat-forward)
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(define-key map "\C-r" 'isearch-repeat-backward)
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||
;; Define M-C-s and M-C-r like C-s and C-r so that the same key
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;; combinations can be used to repeat regexp isearches that can
|
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;; be used to start these searches.
|
||
(define-key map "\M-\C-s" 'isearch-repeat-forward)
|
||
(define-key map "\M-\C-r" 'isearch-repeat-backward)
|
||
(define-key map "\177" 'isearch-delete-char)
|
||
(define-key map [backspace] 'undefined) ;bug#20466.
|
||
(define-key map "\C-g" 'isearch-abort)
|
||
|
||
;; This assumes \e is the meta-prefix-char.
|
||
(or (= ?\e meta-prefix-char)
|
||
(error "Inconsistency in isearch.el"))
|
||
(define-key map "\e\e\e" 'isearch-cancel)
|
||
|
||
(define-key map "\C-q" 'isearch-quote-char)
|
||
|
||
(define-key map "\r" 'isearch-exit)
|
||
(define-key map [return] 'isearch-exit)
|
||
(define-key map "\C-j" 'isearch-printing-char)
|
||
(define-key map "\t" 'isearch-printing-char)
|
||
(define-key map [?\S-\ ] 'isearch-printing-char)
|
||
|
||
(define-key map "\C-w" 'isearch-yank-word-or-char)
|
||
(define-key map "\M-\C-w" 'isearch-del-char)
|
||
(define-key map "\M-\C-y" 'isearch-yank-char)
|
||
(define-key map "\C-y" 'isearch-yank-kill)
|
||
(define-key map "\M-s\C-e" 'isearch-yank-line)
|
||
|
||
(define-key map (char-to-string help-char) isearch-help-map)
|
||
(define-key map [help] isearch-help-map)
|
||
(define-key map [f1] isearch-help-map)
|
||
|
||
(define-key map "\M-n" 'isearch-ring-advance)
|
||
(define-key map "\M-p" 'isearch-ring-retreat)
|
||
(define-key map "\M-y" 'isearch-yank-pop)
|
||
|
||
(define-key map "\M-\t" 'isearch-complete)
|
||
|
||
;; Pass frame events transparently so they won't exit the search.
|
||
;; In particular, if we have more than one display open, then a
|
||
;; switch-frame might be generated by someone typing at another keyboard.
|
||
(define-key map [switch-frame] nil)
|
||
(define-key map [delete-frame] nil)
|
||
(define-key map [iconify-frame] nil)
|
||
(define-key map [make-frame-visible] nil)
|
||
(define-key map [mouse-movement] nil)
|
||
(define-key map [language-change] nil)
|
||
|
||
;; For searching multilingual text.
|
||
(define-key map "\C-\\" 'isearch-toggle-input-method)
|
||
(define-key map "\C-^" 'isearch-toggle-specified-input-method)
|
||
|
||
;; People expect to be able to paste with the mouse.
|
||
(define-key map [mouse-2] #'isearch-mouse-2)
|
||
(define-key map [down-mouse-2] nil)
|
||
(define-key map [xterm-paste] #'isearch-xterm-paste)
|
||
|
||
;; Some bindings you may want to put in your isearch-mode-hook.
|
||
;; Suggest some alternates...
|
||
(define-key map "\M-c" 'isearch-toggle-case-fold)
|
||
(define-key map "\M-r" 'isearch-toggle-regexp)
|
||
(define-key map "\M-e" 'isearch-edit-string)
|
||
|
||
(put 'isearch-edit-string :advertised-binding "\M-se")
|
||
|
||
(define-key map "\M-se" 'isearch-edit-string)
|
||
;; More toggles defined by `isearch-define-mode-toggle'.
|
||
|
||
(define-key map [?\M-%] 'isearch-query-replace)
|
||
(define-key map [?\C-\M-%] 'isearch-query-replace-regexp)
|
||
(define-key map "\M-so" 'isearch-occur)
|
||
(define-key map "\M-shr" 'isearch-highlight-regexp)
|
||
|
||
;; The key translations defined in the C-x 8 prefix should add
|
||
;; characters to the search string. See iso-transl.el.
|
||
(define-key map "\C-x8\r" 'isearch-char-by-name)
|
||
|
||
map)
|
||
"Keymap for `isearch-mode'.")
|
||
|
||
(defvar minibuffer-local-isearch-map
|
||
(let ((map (make-sparse-keymap)))
|
||
(set-keymap-parent map minibuffer-local-map)
|
||
(define-key map "\r" 'exit-minibuffer)
|
||
(define-key map "\M-\t" 'isearch-complete-edit)
|
||
(define-key map "\C-s" 'isearch-forward-exit-minibuffer)
|
||
(define-key map "\C-r" 'isearch-reverse-exit-minibuffer)
|
||
(define-key map "\C-f" 'isearch-yank-char-in-minibuffer)
|
||
(define-key map [right] 'isearch-yank-char-in-minibuffer)
|
||
map)
|
||
"Keymap for editing Isearch strings in the minibuffer.")
|
||
|
||
;; Internal variables declared globally for byte-compiler.
|
||
;; These are all set with setq while isearching
|
||
;; and bound locally while editing the search string.
|
||
|
||
(defvar isearch-forward nil) ; Searching in the forward direction.
|
||
(defvar isearch-regexp nil) ; Searching for a regexp.
|
||
(defvar isearch-regexp-function nil
|
||
"Regexp-based search mode for words/symbols.
|
||
If the value is a function (e.g. `isearch-symbol-regexp'), it is
|
||
called to convert a plain search string to a regexp used by
|
||
regexp search functions.
|
||
The symbol property `isearch-message-prefix' put on this function
|
||
specifies the prefix string displayed in the search message.
|
||
|
||
This variable is set and changed during isearch. To change the
|
||
default behavior used for searches, see `search-default-mode'
|
||
instead.")
|
||
;; We still support setting this to t for backwards compatibility.
|
||
(define-obsolete-variable-alias 'isearch-word
|
||
'isearch-regexp-function "25.1")
|
||
|
||
(defvar isearch-lax-whitespace t
|
||
"If non-nil, a space will match a sequence of whitespace chars.
|
||
When you enter a space or spaces in ordinary incremental search, it
|
||
will match any sequence matched by the regexp defined by the variable
|
||
`search-whitespace-regexp'. If the value is nil, each space you type
|
||
matches literally, against one space. You can toggle the value of this
|
||
variable by the command `isearch-toggle-lax-whitespace'.")
|
||
|
||
(defvar isearch-regexp-lax-whitespace nil
|
||
"If non-nil, a space will match a sequence of whitespace chars.
|
||
When you enter a space or spaces in regexp incremental search, it
|
||
will match any sequence matched by the regexp defined by the variable
|
||
`search-whitespace-regexp'. If the value is nil, each space you type
|
||
matches literally, against one space. You can toggle the value of this
|
||
variable by the command `isearch-toggle-lax-whitespace'.")
|
||
|
||
(defvar isearch-cmds nil
|
||
"Stack of search status elements.
|
||
Each element is an `isearch--state' struct where the slots are
|
||
[STRING MESSAGE POINT SUCCESS FORWARD OTHER-END WORD
|
||
ERROR WRAPPED BARRIER CASE-FOLD-SEARCH]")
|
||
|
||
(defvar isearch-string "") ; The current search string.
|
||
(defvar isearch-message "") ; text-char-description version of isearch-string
|
||
|
||
(defvar isearch-message-prefix-add nil) ; Additional text for the message prefix
|
||
(defvar isearch-message-suffix-add nil) ; Additional text for the message suffix
|
||
|
||
(defvar isearch-success t) ; Searching is currently successful.
|
||
(defvar isearch-error nil) ; Error message for failed search.
|
||
(defvar isearch-other-end nil) ; Start (end) of match if forward (backward).
|
||
(defvar isearch-wrapped nil) ; Searching restarted from the top (bottom).
|
||
(defvar isearch-barrier 0
|
||
"Recorded minimum/maximal point for the current search.")
|
||
(defvar isearch-just-started nil)
|
||
(defvar isearch-start-hscroll 0) ; hscroll when starting the search.
|
||
|
||
;; case-fold-search while searching.
|
||
;; either nil, t, or 'yes. 'yes means the same as t except that mixed
|
||
;; case in the search string is ignored.
|
||
(defvar isearch-case-fold-search nil)
|
||
|
||
;; search-invisible while searching.
|
||
;; either nil, t, or 'open. 'open means the same as t except that
|
||
;; opens hidden overlays.
|
||
(defvar isearch-invisible search-invisible)
|
||
|
||
(defvar isearch-last-case-fold-search nil)
|
||
|
||
;; Used to save default value while isearch is active
|
||
(defvar isearch-original-minibuffer-message-timeout nil)
|
||
|
||
(defvar isearch-adjusted nil)
|
||
(defvar isearch-slow-terminal-mode nil)
|
||
;; If t, using a small window.
|
||
(defvar isearch-small-window nil)
|
||
(defvar isearch-opoint 0)
|
||
;; The window configuration active at the beginning of the search.
|
||
(defvar isearch-window-configuration nil)
|
||
|
||
;; Flag to indicate a yank occurred, so don't move the cursor.
|
||
(defvar isearch-yank-flag nil)
|
||
|
||
;; A function to be called after each input character is processed.
|
||
;; (It is not called after characters that exit the search.)
|
||
;; It is only set from an optional argument to `isearch-mode'.
|
||
(defvar isearch-op-fun nil)
|
||
|
||
;; Is isearch-mode in a recursive edit for modal searching.
|
||
(defvar isearch-recursive-edit nil)
|
||
|
||
;; Should isearch be terminated after doing one search?
|
||
(defvar isearch-nonincremental nil)
|
||
|
||
;; New value of isearch-nonincremental after isearch-edit-string.
|
||
(defvar isearch-new-nonincremental nil)
|
||
|
||
;; New value of isearch-forward after isearch-edit-string.
|
||
(defvar isearch-new-forward nil)
|
||
|
||
;; Accumulate here the overlays opened during searching.
|
||
(defvar isearch-opened-overlays nil)
|
||
|
||
;; Non-nil if the string exists but is invisible.
|
||
(defvar isearch-hidden nil)
|
||
|
||
;; The value of input-method-function when isearch is invoked.
|
||
(defvar isearch-input-method-function nil)
|
||
|
||
;; A flag to tell if input-method-function is locally bound when
|
||
;; isearch is invoked.
|
||
(defvar isearch-input-method-local-p nil)
|
||
|
||
(defvar isearch--saved-overriding-local-map nil)
|
||
|
||
;; Minor-mode-alist changes - kind of redundant with the
|
||
;; echo area, but if isearching in multiple windows, it can be useful.
|
||
|
||
(or (assq 'isearch-mode minor-mode-alist)
|
||
(nconc minor-mode-alist
|
||
(list '(isearch-mode isearch-mode))))
|
||
|
||
(defvar-local isearch-mode nil) ;; Name of the minor mode, if non-nil.
|
||
|
||
(define-key global-map "\C-s" 'isearch-forward)
|
||
(define-key esc-map "\C-s" 'isearch-forward-regexp)
|
||
(define-key global-map "\C-r" 'isearch-backward)
|
||
(define-key esc-map "\C-r" 'isearch-backward-regexp)
|
||
(define-key search-map "w" 'isearch-forward-word)
|
||
(define-key search-map "_" 'isearch-forward-symbol)
|
||
(define-key search-map "." 'isearch-forward-symbol-at-point)
|
||
|
||
;; Entry points to isearch-mode.
|
||
|
||
(defun isearch-forward (&optional regexp-p no-recursive-edit)
|
||
"\
|
||
Do incremental search forward.
|
||
With a prefix argument, do an incremental regular expression search instead.
|
||
\\<isearch-mode-map>
|
||
As you type characters, they add to the search string and are found.
|
||
The following non-printing keys are bound in `isearch-mode-map'.
|
||
|
||
Type \\[isearch-delete-char] to cancel last input item from end of search string.
|
||
Type \\[isearch-exit] to exit, leaving point at location found.
|
||
Type LFD (C-j) to match end of line.
|
||
Type \\[isearch-repeat-forward] to search again forward,\
|
||
\\[isearch-repeat-backward] to search again backward.
|
||
Type \\[isearch-yank-word-or-char] to yank next word or character in buffer
|
||
onto the end of the search string, and search for it.
|
||
Type \\[isearch-del-char] to delete character from end of search string.
|
||
Type \\[isearch-yank-char] to yank char from buffer onto end of search\
|
||
string and search for it.
|
||
Type \\[isearch-yank-line] to yank rest of line onto end of search string\
|
||
and search for it.
|
||
Type \\[isearch-yank-kill] to yank the last string of killed text.
|
||
Type \\[isearch-yank-pop] to replace string just yanked into search prompt
|
||
with string killed before it.
|
||
Type \\[isearch-quote-char] to quote control character to search for it.
|
||
Type \\[isearch-char-by-name] to add a character to search by Unicode name,\
|
||
with completion.
|
||
\\[isearch-abort] while searching or when search has failed cancels input\
|
||
back to what has
|
||
been found successfully.
|
||
\\[isearch-abort] when search is successful aborts and moves point to\
|
||
starting point.
|
||
|
||
If you try to exit with the search string still empty, it invokes
|
||
nonincremental search.
|
||
|
||
Type \\[isearch-toggle-case-fold] to toggle search case-sensitivity.
|
||
Type \\[isearch-toggle-invisible] to toggle search in invisible text.
|
||
Type \\[isearch-toggle-regexp] to toggle regular-expression mode.
|
||
Type \\[isearch-toggle-word] to toggle word mode.
|
||
Type \\[isearch-toggle-symbol] to toggle symbol mode.
|
||
Type \\[isearch-toggle-char-fold] to toggle character folding.
|
||
|
||
Type \\[isearch-toggle-lax-whitespace] to toggle whitespace matching.
|
||
In incremental searches, a space or spaces normally matches any whitespace
|
||
defined by the variable `search-whitespace-regexp'; see also the variables
|
||
`isearch-lax-whitespace' and `isearch-regexp-lax-whitespace'.
|
||
|
||
Type \\[isearch-edit-string] to edit the search string in the minibuffer.
|
||
|
||
Also supported is a search ring of the previous 16 search strings.
|
||
Type \\[isearch-ring-advance] to search for the next item in the search ring.
|
||
Type \\[isearch-ring-retreat] to search for the previous item in the search\
|
||
ring.
|
||
Type \\[isearch-complete] to complete the search string using the search ring.
|
||
|
||
Type \\[isearch-query-replace] to run `query-replace' with string to\
|
||
replace from last search string.
|
||
Type \\[isearch-query-replace-regexp] to run `query-replace-regexp'\
|
||
with the last search string.
|
||
Type \\[isearch-occur] to run `occur' that shows\
|
||
the last search string.
|
||
Type \\[isearch-highlight-regexp] to run `highlight-regexp'\
|
||
that highlights the last search string.
|
||
|
||
Type \\[isearch-describe-bindings] to display all Isearch key bindings.
|
||
Type \\[isearch-describe-key] to display documentation of Isearch key.
|
||
Type \\[isearch-describe-mode] to display documentation of Isearch mode.
|
||
|
||
If an input method is turned on in the current buffer, that input
|
||
method is also active while you are typing characters to search.
|
||
To toggle the input method, type \\[isearch-toggle-input-method]. \
|
||
It also toggles the input
|
||
method in the current buffer.
|
||
|
||
To use a different input method for searching, type \
|
||
\\[isearch-toggle-specified-input-method],
|
||
and specify an input method you want to use.
|
||
|
||
The above keys, bound in `isearch-mode-map', are often controlled by
|
||
options; do \\[apropos] on search-.* to find them.
|
||
Other control and meta characters terminate the search
|
||
and are then executed normally (depending on `search-exit-option').
|
||
Likewise for function keys and mouse button events.
|
||
|
||
If this function is called non-interactively with a nil NO-RECURSIVE-EDIT,
|
||
it does not return to the calling function until the search is done.
|
||
See the function `isearch-mode' for more information."
|
||
|
||
(interactive "P\np")
|
||
(isearch-mode t (not (null regexp-p)) nil (not no-recursive-edit)))
|
||
|
||
(defun isearch-forward-regexp (&optional not-regexp no-recursive-edit)
|
||
"Do incremental search forward for regular expression.
|
||
With a prefix argument, do a regular string search instead.
|
||
Like ordinary incremental search except that your input is treated
|
||
as a regexp. See the command `isearch-forward' for more information.
|
||
|
||
In incremental searches, a space or spaces normally matches any
|
||
whitespace defined by the variable `search-whitespace-regexp'.
|
||
To search for a literal space and nothing else, enter C-q SPC.
|
||
To toggle whitespace matching, use `isearch-toggle-lax-whitespace'.
|
||
This command does not support character folding."
|
||
(interactive "P\np")
|
||
(isearch-mode t (null not-regexp) nil (not no-recursive-edit)))
|
||
|
||
(defun isearch-forward-word (&optional not-word no-recursive-edit)
|
||
"Do incremental search forward for a sequence of words.
|
||
With a prefix argument, do a regular string search instead.
|
||
Like ordinary incremental search except that your input is treated
|
||
as a sequence of words without regard to how the words are separated.
|
||
See the command `isearch-forward' for more information.
|
||
This command does not support character folding, and lax space matching
|
||
has no effect on it."
|
||
(interactive "P\np")
|
||
(isearch-mode t nil nil (not no-recursive-edit) (null not-word)))
|
||
|
||
(defun isearch-forward-symbol (&optional _not-symbol no-recursive-edit)
|
||
"Do incremental search forward for a symbol.
|
||
The prefix argument is currently unused.
|
||
Like ordinary incremental search except that your input is treated
|
||
as a symbol surrounded by symbol boundary constructs \\_< and \\_>.
|
||
See the command `isearch-forward' for more information.
|
||
This command does not support character folding, and lax space matching
|
||
has no effect on it."
|
||
(interactive "P\np")
|
||
(isearch-mode t nil nil (not no-recursive-edit) 'isearch-symbol-regexp))
|
||
|
||
(defun isearch-backward (&optional regexp-p no-recursive-edit)
|
||
"Do incremental search backward.
|
||
With a prefix argument, do a regular expression search instead.
|
||
See the command `isearch-forward' for more information."
|
||
(interactive "P\np")
|
||
(isearch-mode nil (not (null regexp-p)) nil (not no-recursive-edit)))
|
||
|
||
(defun isearch-backward-regexp (&optional not-regexp no-recursive-edit)
|
||
"Do incremental search backward for regular expression.
|
||
With a prefix argument, do a regular string search instead.
|
||
Like ordinary incremental search except that your input is treated
|
||
as a regexp. See the command `isearch-forward-regexp' for more information."
|
||
(interactive "P\np")
|
||
(isearch-mode nil (null not-regexp) nil (not no-recursive-edit)))
|
||
|
||
(defun isearch-forward-symbol-at-point ()
|
||
"Do incremental search forward for a symbol found near point.
|
||
Like ordinary incremental search except that the symbol found at point
|
||
is added to the search string initially as a regexp surrounded
|
||
by symbol boundary constructs \\_< and \\_>.
|
||
See the command `isearch-forward-symbol' for more information."
|
||
(interactive)
|
||
(isearch-forward-symbol nil 1)
|
||
(let ((bounds (find-tag-default-bounds)))
|
||
(cond
|
||
(bounds
|
||
(when (< (car bounds) (point))
|
||
(goto-char (car bounds)))
|
||
(isearch-yank-string
|
||
(buffer-substring-no-properties (car bounds) (cdr bounds))))
|
||
(t
|
||
(setq isearch-error "No symbol at point")
|
||
(isearch-push-state)
|
||
(isearch-update)))))
|
||
|
||
|
||
;; isearch-mode only sets up incremental search for the minor mode.
|
||
;; All the work is done by the isearch-mode commands.
|
||
|
||
;; Not used yet:
|
||
;;(defvar isearch-commands '(isearch-forward isearch-backward
|
||
;; isearch-forward-regexp isearch-backward-regexp)
|
||
;; "List of commands for which isearch-mode does not recursive-edit.")
|
||
|
||
(defun isearch-mode (forward &optional regexp op-fun recursive-edit regexp-function)
|
||
"Start Isearch minor mode.
|
||
It is called by the function `isearch-forward' and other related functions.
|
||
|
||
The non-nil arg FORWARD means searching in the forward direction.
|
||
|
||
The non-nil arg REGEXP does an incremental regular expression search.
|
||
|
||
The arg OP-FUN is a function to be called after each input character
|
||
is processed. (It is not called after characters that exit the search.)
|
||
|
||
When the arg RECURSIVE-EDIT is non-nil, this function behaves modally and
|
||
does not return to the calling function until the search is completed.
|
||
To behave this way it enters a recursive-edit and exits it when done
|
||
isearching.
|
||
|
||
The arg REGEXP-FUNCTION, if non-nil, should be a function. It is
|
||
used to set the value of `isearch-regexp-function'."
|
||
|
||
;; Initialize global vars.
|
||
(setq isearch-forward forward
|
||
isearch-regexp (or regexp
|
||
(and (not regexp-function)
|
||
(eq search-default-mode t)))
|
||
isearch-regexp-function (or regexp-function
|
||
(and (functionp search-default-mode)
|
||
(not regexp)
|
||
search-default-mode))
|
||
isearch-op-fun op-fun
|
||
isearch-last-case-fold-search isearch-case-fold-search
|
||
isearch-case-fold-search case-fold-search
|
||
isearch-invisible search-invisible
|
||
isearch-string ""
|
||
isearch-message ""
|
||
isearch-cmds nil
|
||
isearch-success t
|
||
isearch-wrapped nil
|
||
isearch-barrier (point)
|
||
isearch-adjusted nil
|
||
isearch-yank-flag nil
|
||
isearch-error nil
|
||
isearch-slow-terminal-mode (and (<= baud-rate search-slow-speed)
|
||
(> (window-height)
|
||
(* 4
|
||
(abs search-slow-window-lines))))
|
||
isearch-other-end nil
|
||
isearch-small-window nil
|
||
isearch-just-started t
|
||
isearch-start-hscroll (window-hscroll)
|
||
|
||
isearch-opoint (point)
|
||
search-ring-yank-pointer nil
|
||
isearch-opened-overlays nil
|
||
isearch-input-method-function input-method-function
|
||
isearch-input-method-local-p (local-variable-p 'input-method-function)
|
||
regexp-search-ring-yank-pointer nil
|
||
|
||
;; Save the original value of `minibuffer-message-timeout', and
|
||
;; set it to nil so that isearch's messages don't get timed out.
|
||
isearch-original-minibuffer-message-timeout minibuffer-message-timeout
|
||
minibuffer-message-timeout nil)
|
||
|
||
;; We must bypass input method while reading key. When a user type
|
||
;; printable character, appropriate input method is turned on in
|
||
;; minibuffer to read multibyte characters.
|
||
(or isearch-input-method-local-p
|
||
(make-local-variable 'input-method-function))
|
||
(setq input-method-function nil)
|
||
|
||
(looking-at "")
|
||
(setq isearch-window-configuration
|
||
(if isearch-slow-terminal-mode (current-window-configuration) nil))
|
||
|
||
;; Maybe make minibuffer frame visible and/or raise it.
|
||
(let ((frame (window-frame (minibuffer-window))))
|
||
(unless (memq (frame-live-p frame) '(nil t))
|
||
(unless (frame-visible-p frame)
|
||
(make-frame-visible frame))
|
||
(if minibuffer-auto-raise
|
||
(raise-frame frame))))
|
||
|
||
(setq isearch-mode " Isearch") ;; forward? regexp?
|
||
(force-mode-line-update)
|
||
|
||
(setq overriding-terminal-local-map isearch-mode-map)
|
||
(run-hooks 'isearch-mode-hook)
|
||
;; Remember the initial map possibly modified
|
||
;; by external packages in isearch-mode-hook. (Bug#16035)
|
||
(setq isearch--saved-overriding-local-map overriding-terminal-local-map)
|
||
|
||
;; Pushing the initial state used to be before running isearch-mode-hook,
|
||
;; but a hook might set `isearch-push-state-function' used in
|
||
;; `isearch-push-state' to save mode-specific initial state. (Bug#4994)
|
||
(isearch-push-state)
|
||
|
||
(isearch-update)
|
||
|
||
(add-hook 'pre-command-hook 'isearch-pre-command-hook)
|
||
(add-hook 'post-command-hook 'isearch-post-command-hook)
|
||
(add-hook 'mouse-leave-buffer-hook 'isearch-done)
|
||
(add-hook 'kbd-macro-termination-hook 'isearch-done)
|
||
|
||
;; isearch-mode can be made modal (in the sense of not returning to
|
||
;; the calling function until searching is completed) by entering
|
||
;; a recursive-edit and exiting it when done isearching.
|
||
(if recursive-edit
|
||
(let ((isearch-recursive-edit t))
|
||
(recursive-edit)))
|
||
isearch-success)
|
||
|
||
|
||
;; Some high level utilities. Others below.
|
||
(defvar isearch--current-buffer nil)
|
||
|
||
(defun isearch-update ()
|
||
"This is called after every isearch command to update the display.
|
||
The second last thing it does is to run `isearch-update-post-hook'.
|
||
The last thing is to trigger a new round of lazy highlighting."
|
||
(unless (eq (current-buffer) isearch--current-buffer)
|
||
(when (buffer-live-p isearch--current-buffer)
|
||
(with-current-buffer isearch--current-buffer
|
||
(setq cursor-sensor-inhibit (delq 'isearch cursor-sensor-inhibit))))
|
||
(setq isearch--current-buffer (current-buffer))
|
||
(make-local-variable 'cursor-sensor-inhibit)
|
||
;; Suspend things like cursor-intangible during Isearch so we can search
|
||
;; even within intangible text.
|
||
(push 'isearch cursor-sensor-inhibit))
|
||
|
||
(if (and (null unread-command-events)
|
||
(null executing-kbd-macro))
|
||
(progn
|
||
(if (not (input-pending-p))
|
||
(funcall (or isearch-message-function #'isearch-message)))
|
||
(if (and isearch-slow-terminal-mode
|
||
(not (or isearch-small-window
|
||
(pos-visible-in-window-group-p))))
|
||
(let ((found-point (point)))
|
||
(setq isearch-small-window t)
|
||
(move-to-window-line 0)
|
||
(let ((window-min-height 1))
|
||
(split-window nil (if (< search-slow-window-lines 0)
|
||
(1+ (- search-slow-window-lines))
|
||
(- (window-height)
|
||
(1+ search-slow-window-lines)))))
|
||
(if (< search-slow-window-lines 0)
|
||
(progn (vertical-motion (- 1 search-slow-window-lines))
|
||
(set-window-start (next-window) (point))
|
||
(set-window-hscroll (next-window)
|
||
(window-hscroll))
|
||
(set-window-hscroll (selected-window) 0))
|
||
(other-window 1))
|
||
(goto-char found-point))
|
||
;; Keep same hscrolling as at the start of the search when possible
|
||
(let ((current-scroll (window-hscroll))
|
||
visible-p)
|
||
(set-window-hscroll (selected-window) isearch-start-hscroll)
|
||
(setq visible-p (pos-visible-in-window-group-p nil nil t))
|
||
(if (or (not visible-p)
|
||
;; When point is not visible because of hscroll,
|
||
;; pos-visible-in-window-group-p returns non-nil, but
|
||
;; the X coordinate it returns is 1 pixel beyond
|
||
;; the last visible one.
|
||
(>= (car visible-p)
|
||
(* (window-max-chars-per-line) (frame-char-width))))
|
||
(set-window-hscroll (selected-window) current-scroll))))
|
||
(if isearch-other-end
|
||
(if (< isearch-other-end (point)) ; isearch-forward?
|
||
(isearch-highlight isearch-other-end (point))
|
||
(isearch-highlight (point) isearch-other-end))
|
||
(isearch-dehighlight))))
|
||
(setq ;; quit-flag nil not for isearch-mode
|
||
isearch-adjusted nil
|
||
isearch-yank-flag nil)
|
||
;; We must prevent the point moving to the end of composition when a
|
||
;; part of the composition has just been searched.
|
||
(setq disable-point-adjustment t)
|
||
(run-hooks 'isearch-update-post-hook)
|
||
(when isearch-lazy-highlight
|
||
(isearch-lazy-highlight-new-loop)))
|
||
|
||
(defun isearch-done (&optional nopush edit)
|
||
"Exit Isearch mode.
|
||
For successful search, pass no args.
|
||
For a failing search, NOPUSH is t.
|
||
For going to the minibuffer to edit the search string,
|
||
NOPUSH is t and EDIT is t."
|
||
|
||
(if isearch-resume-in-command-history
|
||
(let ((command `(isearch-resume ,isearch-string ,isearch-regexp
|
||
,isearch-regexp-function ,isearch-forward
|
||
,isearch-message
|
||
',isearch-case-fold-search)))
|
||
(unless (equal (car command-history) command)
|
||
(setq command-history (cons command command-history)))))
|
||
|
||
(remove-hook 'pre-command-hook 'isearch-pre-command-hook)
|
||
(remove-hook 'post-command-hook 'isearch-post-command-hook)
|
||
(remove-hook 'mouse-leave-buffer-hook 'isearch-done)
|
||
(remove-hook 'kbd-macro-termination-hook 'isearch-done)
|
||
(setq isearch-lazy-highlight-start nil)
|
||
(when (buffer-live-p isearch--current-buffer)
|
||
(with-current-buffer isearch--current-buffer
|
||
(setq isearch--current-buffer nil)
|
||
(setq cursor-sensor-inhibit (delq 'isearch cursor-sensor-inhibit))))
|
||
|
||
;; Called by all commands that terminate isearch-mode.
|
||
;; If NOPUSH is non-nil, we don't push the string on the search ring.
|
||
(setq overriding-terminal-local-map nil)
|
||
;; (setq pre-command-hook isearch-old-pre-command-hook) ; for lemacs
|
||
(setq minibuffer-message-timeout isearch-original-minibuffer-message-timeout)
|
||
(isearch-dehighlight)
|
||
(lazy-highlight-cleanup lazy-highlight-cleanup)
|
||
(let ((found-start (window-group-start))
|
||
(found-point (point)))
|
||
(when isearch-window-configuration
|
||
(set-window-configuration isearch-window-configuration)
|
||
(if isearch-small-window
|
||
(goto-char found-point)
|
||
;; set-window-configuration clobbers window-start; restore it.
|
||
;; This has an annoying side effect of clearing the last_modiff
|
||
;; field of the window, which can cause unwanted scrolling,
|
||
;; so don't do it unless truly necessary.
|
||
(set-window-group-start (selected-window) found-start t))))
|
||
|
||
(setq isearch-mode nil)
|
||
(if isearch-input-method-local-p
|
||
(setq input-method-function isearch-input-method-function)
|
||
(kill-local-variable 'input-method-function))
|
||
|
||
(force-mode-line-update)
|
||
|
||
;; If we ended in the middle of some intangible text,
|
||
;; move to the further end of that intangible text.
|
||
(let ((after (if (eobp) nil
|
||
(get-text-property (point) 'intangible)))
|
||
(before (if (bobp) nil
|
||
(get-text-property (1- (point)) 'intangible))))
|
||
(when (and before after (eq before after))
|
||
(goto-char
|
||
(if isearch-forward
|
||
(next-single-property-change (point) 'intangible)
|
||
(previous-single-property-change (point) 'intangible)))))
|
||
|
||
(if (and (> (length isearch-string) 0) (not nopush))
|
||
;; Update the ring data.
|
||
(isearch-update-ring isearch-string isearch-regexp))
|
||
|
||
(let ((isearch-mode-end-hook-quit (and nopush (not edit))))
|
||
(run-hooks 'isearch-mode-end-hook))
|
||
|
||
;; If there was movement, mark the starting position.
|
||
;; Maybe should test difference between and set mark only if > threshold.
|
||
(if (/= (point) isearch-opoint)
|
||
(or (and transient-mark-mode mark-active)
|
||
(progn
|
||
(push-mark isearch-opoint t)
|
||
(or executing-kbd-macro (> (minibuffer-depth) 0) edit
|
||
(message "Mark saved where search started")))))
|
||
|
||
(and (not edit) isearch-recursive-edit (exit-recursive-edit)))
|
||
|
||
(defun isearch-update-ring (string &optional regexp)
|
||
"Add STRING to the beginning of the search ring.
|
||
REGEXP if non-nil says use the regexp search ring."
|
||
(add-to-history
|
||
(if regexp 'regexp-search-ring 'search-ring)
|
||
string
|
||
(if regexp regexp-search-ring-max search-ring-max)))
|
||
|
||
;; Switching buffers should first terminate isearch-mode.
|
||
;; ;; For Emacs 19, the frame switch event is handled.
|
||
;; (defun isearch-switch-frame-handler ()
|
||
;; (interactive) ;; Is this necessary?
|
||
;; ;; First terminate isearch-mode.
|
||
;; (isearch-done)
|
||
;; (isearch-clean-overlays)
|
||
;; (handle-switch-frame (car (cdr last-command-event))))
|
||
|
||
|
||
;; The search status structure and stack.
|
||
|
||
(cl-defstruct (isearch--state
|
||
(:constructor nil)
|
||
(:copier nil)
|
||
(:constructor isearch--get-state
|
||
(&aux
|
||
(string isearch-string)
|
||
(message isearch-message)
|
||
(point (point))
|
||
(success isearch-success)
|
||
(forward isearch-forward)
|
||
(other-end isearch-other-end)
|
||
(word isearch-regexp-function)
|
||
(error isearch-error)
|
||
(wrapped isearch-wrapped)
|
||
(barrier isearch-barrier)
|
||
(case-fold-search isearch-case-fold-search)
|
||
(pop-fun (if isearch-push-state-function
|
||
(funcall isearch-push-state-function))))))
|
||
(string nil :read-only t)
|
||
(message nil :read-only t)
|
||
(point nil :read-only t)
|
||
(success nil :read-only t)
|
||
(forward nil :read-only t)
|
||
(other-end nil :read-only t)
|
||
(word nil :read-only t)
|
||
(error nil :read-only t)
|
||
(wrapped nil :read-only t)
|
||
(barrier nil :read-only t)
|
||
(case-fold-search nil :read-only t)
|
||
(pop-fun nil :read-only t))
|
||
|
||
(defun isearch--set-state (cmd)
|
||
(setq isearch-string (isearch--state-string cmd)
|
||
isearch-message (isearch--state-message cmd)
|
||
isearch-success (isearch--state-success cmd)
|
||
isearch-forward (isearch--state-forward cmd)
|
||
isearch-other-end (isearch--state-other-end cmd)
|
||
isearch-regexp-function (isearch--state-word cmd)
|
||
isearch-error (isearch--state-error cmd)
|
||
isearch-wrapped (isearch--state-wrapped cmd)
|
||
isearch-barrier (isearch--state-barrier cmd)
|
||
isearch-case-fold-search (isearch--state-case-fold-search cmd))
|
||
(if (functionp (isearch--state-pop-fun cmd))
|
||
(funcall (isearch--state-pop-fun cmd) cmd))
|
||
(goto-char (isearch--state-point cmd)))
|
||
|
||
(defun isearch-pop-state ()
|
||
(setq isearch-cmds (cdr isearch-cmds))
|
||
(isearch--set-state (car isearch-cmds)))
|
||
|
||
(defun isearch-push-state ()
|
||
(push (isearch--get-state) isearch-cmds))
|
||
|
||
|
||
;; Commands active while inside of the isearch minor mode.
|
||
|
||
(defun isearch-exit ()
|
||
"Exit search normally.
|
||
However, if this is the first command after starting incremental
|
||
search and `search-nonincremental-instead' is non-nil, do a
|
||
nonincremental search instead via `isearch-edit-string'."
|
||
(interactive)
|
||
(if (and search-nonincremental-instead
|
||
(= 0 (length isearch-string)))
|
||
(let ((isearch-nonincremental t))
|
||
(isearch-edit-string)) ;; this calls isearch-done as well
|
||
(isearch-done))
|
||
(isearch-clean-overlays))
|
||
|
||
(defun isearch-fail-pos (&optional msg)
|
||
"Return position of first mismatch in search string, or nil if none.
|
||
If MSG is non-nil, use variable `isearch-message', otherwise `isearch-string'."
|
||
(let ((cmds isearch-cmds)
|
||
(curr-msg (if msg isearch-message isearch-string))
|
||
succ-msg)
|
||
(when (or (not isearch-success) isearch-error)
|
||
(while (and cmds
|
||
(or (not (isearch--state-success (car cmds)))
|
||
(isearch--state-error (car cmds))))
|
||
(pop cmds))
|
||
(setq succ-msg (and cmds (if msg (isearch--state-message (car cmds))
|
||
(isearch--state-string (car cmds)))))
|
||
(if (and (stringp succ-msg)
|
||
(< (length succ-msg) (length curr-msg))
|
||
(equal succ-msg
|
||
(substring curr-msg 0 (length succ-msg))))
|
||
(length succ-msg)
|
||
0))))
|
||
|
||
(defvar isearch-new-regexp-function nil
|
||
"Holds the next `isearch-regexp-function' inside `with-isearch-suspended'.
|
||
If this is set inside code wrapped by the macro
|
||
`with-isearch-suspended', then the value set will be used as the
|
||
`isearch-regexp-function' once isearch resumes.")
|
||
(define-obsolete-variable-alias 'isearch-new-word
|
||
'isearch-new-regexp-function "25.1")
|
||
|
||
(defmacro with-isearch-suspended (&rest body)
|
||
"Exit Isearch mode, run BODY, and reinvoke the pending search.
|
||
You can update the global isearch variables by setting new values to
|
||
`isearch-new-string', `isearch-new-message', `isearch-new-forward',
|
||
`isearch-new-regexp-function', `isearch-new-case-fold', `isearch-new-nonincremental'."
|
||
;; This code is very hairy for several reasons, explained in the code.
|
||
;; Mainly, isearch-mode must be terminated while editing and then restarted.
|
||
;; If there were a way to catch any change of buffer from the minibuffer,
|
||
;; this could be simplified greatly.
|
||
;; Editing doesn't back up the search point. Should it?
|
||
`(condition-case nil
|
||
(progn
|
||
(let ((isearch-new-nonincremental isearch-nonincremental)
|
||
|
||
;; Locally bind all isearch global variables to protect them
|
||
;; from recursive isearching.
|
||
;; isearch-string -message and -forward are not bound
|
||
;; so they may be changed. Instead, save the values.
|
||
(isearch-new-string isearch-string)
|
||
(isearch-new-message isearch-message)
|
||
(isearch-new-forward isearch-forward)
|
||
(isearch-new-regexp-function isearch-regexp-function)
|
||
(isearch-new-case-fold isearch-case-fold-search)
|
||
|
||
(isearch-regexp isearch-regexp)
|
||
(isearch-op-fun isearch-op-fun)
|
||
(isearch-cmds isearch-cmds)
|
||
(isearch-success isearch-success)
|
||
(isearch-wrapped isearch-wrapped)
|
||
(isearch-barrier isearch-barrier)
|
||
(isearch-adjusted isearch-adjusted)
|
||
(isearch-yank-flag isearch-yank-flag)
|
||
(isearch-error isearch-error)
|
||
|
||
(multi-isearch-file-list-new multi-isearch-file-list)
|
||
(multi-isearch-buffer-list-new multi-isearch-buffer-list)
|
||
(multi-isearch-next-buffer-function multi-isearch-next-buffer-current-function)
|
||
(multi-isearch-current-buffer-new multi-isearch-current-buffer)
|
||
;;; Don't bind this. We want isearch-search, below, to set it.
|
||
;;; And the old value won't matter after that.
|
||
;;; (isearch-other-end isearch-other-end)
|
||
;;; Perhaps some of these other variables should be bound for a
|
||
;;; shorter period, ending before the next isearch-search.
|
||
;;; But there doesn't seem to be a real bug, so let's not risk it now.
|
||
(isearch-opoint isearch-opoint)
|
||
(isearch-slow-terminal-mode isearch-slow-terminal-mode)
|
||
(isearch-small-window isearch-small-window)
|
||
(isearch-recursive-edit isearch-recursive-edit)
|
||
;; Save current configuration so we can restore it here.
|
||
(isearch-window-configuration (current-window-configuration))
|
||
|
||
;; This could protect the index of the search rings,
|
||
;; but we can't reliably count the number of typed M-p
|
||
;; in `read-from-minibuffer' to adjust the index accordingly.
|
||
;; So when the following is commented out, `isearch-mode'
|
||
;; below resets the index to the predictable value nil.
|
||
;; (search-ring-yank-pointer search-ring-yank-pointer)
|
||
;; (regexp-search-ring-yank-pointer regexp-search-ring-yank-pointer)
|
||
|
||
;; Temporarily restore `minibuffer-message-timeout'.
|
||
(minibuffer-message-timeout
|
||
isearch-original-minibuffer-message-timeout)
|
||
(isearch-original-minibuffer-message-timeout
|
||
isearch-original-minibuffer-message-timeout)
|
||
old-point old-other-end)
|
||
|
||
;; Actually terminate isearching until editing is done.
|
||
;; This is so that the user can do anything without failure,
|
||
;; like switch buffers and start another isearch, and return.
|
||
(condition-case nil
|
||
(isearch-done t t)
|
||
(exit nil)) ; was recursive editing
|
||
|
||
;; Save old point and isearch-other-end before reading from minibuffer
|
||
;; that can change their values.
|
||
(setq old-point (point) old-other-end isearch-other-end)
|
||
|
||
(unwind-protect
|
||
(progn ,@body)
|
||
|
||
;; Always resume isearching by restarting it.
|
||
(isearch-mode isearch-forward
|
||
isearch-regexp
|
||
isearch-op-fun
|
||
nil
|
||
isearch-regexp-function)
|
||
|
||
;; Copy new local values to isearch globals
|
||
(setq isearch-string isearch-new-string
|
||
isearch-message isearch-new-message
|
||
isearch-forward isearch-new-forward
|
||
isearch-nonincremental isearch-new-nonincremental
|
||
isearch-regexp-function isearch-new-regexp-function
|
||
isearch-case-fold-search isearch-new-case-fold
|
||
multi-isearch-current-buffer multi-isearch-current-buffer-new
|
||
multi-isearch-file-list multi-isearch-file-list-new
|
||
multi-isearch-buffer-list multi-isearch-buffer-list-new)
|
||
|
||
;; Restore the minibuffer message before moving point.
|
||
(funcall (or isearch-message-function #'isearch-message) nil t)
|
||
|
||
;; Set point at the start (end) of old match if forward (backward),
|
||
;; so after exiting minibuffer isearch resumes at the start (end)
|
||
;; of this match and can find it again.
|
||
(if (and old-other-end (eq old-point (point))
|
||
(eq isearch-forward isearch-new-forward))
|
||
(goto-char old-other-end)))
|
||
|
||
;; Empty isearch-string means use default.
|
||
(when (= 0 (length isearch-string))
|
||
(setq isearch-string (or (car (if isearch-regexp
|
||
regexp-search-ring
|
||
search-ring))
|
||
"")
|
||
|
||
isearch-message
|
||
(mapconcat 'isearch-text-char-description
|
||
isearch-string ""))
|
||
;; After taking the last element, adjust ring to previous one.
|
||
(isearch-ring-adjust1 nil)))
|
||
|
||
;; This used to push the state as of before this C-s, but it adds
|
||
;; an inconsistent state where part of variables are from the
|
||
;; previous search (e.g. `isearch-success'), and part of variables
|
||
;; are just entered from the minibuffer (e.g. `isearch-string').
|
||
;; (isearch-push-state)
|
||
|
||
;; Reinvoke the pending search.
|
||
(isearch-search)
|
||
(isearch-push-state) ; this pushes the correct state
|
||
(isearch-update)
|
||
(if isearch-nonincremental
|
||
(progn
|
||
;; (sit-for 1) ;; needed if isearch-done does: (message "")
|
||
(isearch-done)
|
||
;; The search done message is confusing when the string
|
||
;; is empty, so erase it.
|
||
(if (equal isearch-string "")
|
||
(message "")))))
|
||
|
||
(quit ; handle abort-recursive-edit
|
||
(isearch-abort) ;; outside of let to restore outside global values
|
||
)))
|
||
|
||
(defvar minibuffer-history-symbol) ;; from external package gmhist.el
|
||
|
||
(defun isearch-edit-string ()
|
||
"Edit the search string in the minibuffer.
|
||
The following additional command keys are active while editing.
|
||
\\<minibuffer-local-isearch-map>
|
||
\\[exit-minibuffer] to resume incremental searching with the edited string.
|
||
\\[isearch-forward-exit-minibuffer] to resume isearching forward.
|
||
\\[isearch-reverse-exit-minibuffer] to resume isearching backward.
|
||
\\[isearch-complete-edit] to complete the search string using the search ring."
|
||
(interactive)
|
||
(with-isearch-suspended
|
||
(let* ((message-log-max nil)
|
||
;; Don't add a new search string to the search ring here
|
||
;; in `read-from-minibuffer'. It should be added only
|
||
;; by `isearch-update-ring' called from `isearch-done'.
|
||
(history-add-new-input nil)
|
||
;; Binding minibuffer-history-symbol to nil is a work-around
|
||
;; for some incompatibility with gmhist.
|
||
(minibuffer-history-symbol))
|
||
(setq isearch-new-string
|
||
(read-from-minibuffer
|
||
(isearch-message-prefix nil isearch-nonincremental)
|
||
(cons isearch-string (1+ (or (isearch-fail-pos)
|
||
(length isearch-string))))
|
||
minibuffer-local-isearch-map nil
|
||
(if isearch-regexp
|
||
(cons 'regexp-search-ring
|
||
(1+ (or regexp-search-ring-yank-pointer -1)))
|
||
(cons 'search-ring
|
||
(1+ (or search-ring-yank-pointer -1))))
|
||
nil t)
|
||
isearch-new-message
|
||
(mapconcat 'isearch-text-char-description
|
||
isearch-new-string "")))))
|
||
|
||
(defun isearch-nonincremental-exit-minibuffer ()
|
||
(interactive)
|
||
(setq isearch-new-nonincremental t)
|
||
(exit-minibuffer))
|
||
;; It makes no sense to change the value of `isearch-new-nonincremental'
|
||
;; from nil to t during `isearch-edit-string'. Thus marked as obsolete.
|
||
(make-obsolete 'isearch-nonincremental-exit-minibuffer 'exit-minibuffer "24.4")
|
||
|
||
(defun isearch-forward-exit-minibuffer ()
|
||
"Resume isearching forward from the minibuffer that edits the search string."
|
||
(interactive)
|
||
(setq isearch-new-forward t isearch-new-nonincremental nil)
|
||
(exit-minibuffer))
|
||
|
||
(defun isearch-reverse-exit-minibuffer ()
|
||
"Resume isearching backward from the minibuffer that edits the search string."
|
||
(interactive)
|
||
(setq isearch-new-forward nil isearch-new-nonincremental nil)
|
||
(exit-minibuffer))
|
||
|
||
(defun isearch-cancel ()
|
||
"Terminate the search and go back to the starting point."
|
||
(interactive)
|
||
(if (and isearch-push-state-function isearch-cmds)
|
||
;; For defined push-state function, restore the first state.
|
||
;; This calls pop-state function and restores original point.
|
||
(let ((isearch-cmds (last isearch-cmds)))
|
||
(isearch--set-state (car isearch-cmds)))
|
||
(goto-char isearch-opoint))
|
||
(isearch-done t) ; Exit isearch..
|
||
(isearch-clean-overlays)
|
||
(signal 'quit nil)) ; ..and pass on quit signal.
|
||
|
||
(defun isearch-abort ()
|
||
"Abort incremental search mode if searching is successful, signaling quit.
|
||
Otherwise, revert to previous successful search and continue searching.
|
||
Use `isearch-exit' to quit without signaling."
|
||
(interactive)
|
||
;; (ding) signal instead below, if quitting
|
||
(discard-input)
|
||
(if (and isearch-success (not isearch-error))
|
||
;; If search is successful and has no incomplete regexp,
|
||
;; move back to starting point and really do quit.
|
||
(progn
|
||
(setq isearch-success nil)
|
||
(isearch-cancel))
|
||
;; If search is failing, or has an incomplete regexp,
|
||
;; rub out until it is once more successful.
|
||
(while (or (not isearch-success) isearch-error)
|
||
(isearch-pop-state))
|
||
(isearch-update)))
|
||
|
||
(defun isearch-repeat (direction)
|
||
;; Utility for isearch-repeat-forward and -backward.
|
||
(if (eq isearch-forward (eq direction 'forward))
|
||
;; C-s in forward or C-r in reverse.
|
||
(if (equal isearch-string "")
|
||
;; If search string is empty, use last one.
|
||
(if (null (if isearch-regexp regexp-search-ring search-ring))
|
||
(setq isearch-error "No previous search string")
|
||
(setq isearch-string
|
||
(car (if isearch-regexp regexp-search-ring search-ring))
|
||
isearch-message
|
||
(mapconcat 'isearch-text-char-description
|
||
isearch-string "")
|
||
isearch-case-fold-search isearch-last-case-fold-search)
|
||
;; After taking the last element, adjust ring to previous one.
|
||
(isearch-ring-adjust1 nil))
|
||
;; If already have what to search for, repeat it.
|
||
(or isearch-success
|
||
(progn
|
||
;; Set isearch-wrapped before calling isearch-wrap-function
|
||
(setq isearch-wrapped t)
|
||
(if isearch-wrap-function
|
||
(funcall isearch-wrap-function)
|
||
(goto-char (if isearch-forward (point-min) (point-max)))))))
|
||
;; C-s in reverse or C-r in forward, change direction.
|
||
(setq isearch-forward (not isearch-forward)
|
||
isearch-success t))
|
||
|
||
(setq isearch-barrier (point)) ; For subsequent \| if regexp.
|
||
|
||
(if (equal isearch-string "")
|
||
(setq isearch-success t)
|
||
(if (and isearch-success
|
||
(equal (point) isearch-other-end)
|
||
(not isearch-just-started))
|
||
;; If repeating a search that found
|
||
;; an empty string, ensure we advance.
|
||
(if (if isearch-forward (eobp) (bobp))
|
||
;; If there's nowhere to advance to, fail (and wrap next time).
|
||
(progn
|
||
(setq isearch-success nil)
|
||
(ding))
|
||
(forward-char (if isearch-forward 1 -1))
|
||
(isearch-search))
|
||
(isearch-search)))
|
||
|
||
(isearch-push-state)
|
||
(isearch-update))
|
||
|
||
(defun isearch-repeat-forward ()
|
||
"Repeat incremental search forwards."
|
||
(interactive)
|
||
(isearch-repeat 'forward))
|
||
|
||
(defun isearch-repeat-backward ()
|
||
"Repeat incremental search backwards."
|
||
(interactive)
|
||
(isearch-repeat 'backward))
|
||
|
||
|
||
;;; Toggles for `isearch-regexp-function' and `search-default-mode'.
|
||
(defmacro isearch-define-mode-toggle (mode key function &optional docstring &rest body)
|
||
"Define a command called `isearch-toggle-MODE' and bind it to `M-s KEY'.
|
||
The first line of the command's docstring is auto-generated, the
|
||
remainder may be provided in DOCSTRING.
|
||
If FUNCTION is a symbol, this command first toggles the value of
|
||
`isearch-regexp-function' between nil and FUNCTION. Also set the
|
||
`isearch-message-prefix' property of FUNCTION.
|
||
The command then executes BODY and updates the isearch prompt."
|
||
(declare (indent defun))
|
||
(let ((command-name (intern (format "isearch-toggle-%s" mode)))
|
||
(key (concat "\M-s" key)))
|
||
`(progn
|
||
(defun ,command-name ()
|
||
,(format "Toggle %s searching on or off.%s" mode
|
||
(if docstring (concat "\n" docstring) ""))
|
||
(interactive)
|
||
,@(when function
|
||
`((setq isearch-regexp-function
|
||
(unless (eq isearch-regexp-function #',function)
|
||
#',function))
|
||
(setq isearch-regexp nil)))
|
||
,@body
|
||
(setq isearch-success t isearch-adjusted t)
|
||
(isearch-update))
|
||
(define-key isearch-mode-map ,key #',command-name)
|
||
,@(when (and function (symbolp function))
|
||
`((put ',function 'isearch-message-prefix ,(format "%s " mode))
|
||
(put ',function :advertised-binding ,key)
|
||
(cl-callf (lambda (types) (cons 'choice
|
||
(cons '(const :tag ,(capitalize (format "%s search" mode)) ,function)
|
||
(cdr types))))
|
||
(get 'search-default-mode 'custom-type)))))))
|
||
|
||
(isearch-define-mode-toggle word "w" word-search-regexp "\
|
||
Turning on word search turns off regexp mode.")
|
||
(isearch-define-mode-toggle symbol "_" isearch-symbol-regexp "\
|
||
Turning on symbol search turns off regexp mode.")
|
||
(isearch-define-mode-toggle char-fold "'" char-fold-to-regexp "\
|
||
Turning on character-folding turns off regexp mode.")
|
||
(put 'char-fold-to-regexp 'isearch-message-prefix "char-fold ")
|
||
|
||
(isearch-define-mode-toggle regexp "r" nil nil
|
||
(setq isearch-regexp (not isearch-regexp))
|
||
(if isearch-regexp (setq isearch-regexp-function nil)))
|
||
|
||
(defun isearch--momentary-message (string)
|
||
"Print STRING at the end of the isearch prompt for 1 second"
|
||
(let ((message-log-max nil))
|
||
(message "%s%s [%s]"
|
||
(isearch-message-prefix nil isearch-nonincremental)
|
||
isearch-message
|
||
string))
|
||
(sit-for 1))
|
||
|
||
(isearch-define-mode-toggle lax-whitespace " " nil
|
||
"In ordinary search, toggles the value of the variable
|
||
`isearch-lax-whitespace'. In regexp search, toggles the
|
||
value of the variable `isearch-regexp-lax-whitespace'."
|
||
(isearch--momentary-message
|
||
(if (if isearch-regexp
|
||
(setq isearch-regexp-lax-whitespace (not isearch-regexp-lax-whitespace))
|
||
(setq isearch-lax-whitespace (not isearch-lax-whitespace)))
|
||
"match spaces loosely"
|
||
"match spaces literally")))
|
||
|
||
(isearch-define-mode-toggle case-fold "c" nil
|
||
"Toggles the value of the variable `isearch-case-fold-search'."
|
||
(isearch--momentary-message
|
||
(if (setq isearch-case-fold-search
|
||
(if isearch-case-fold-search nil 'yes))
|
||
"case insensitive"
|
||
"case sensitive")))
|
||
|
||
(isearch-define-mode-toggle invisible "i" nil
|
||
"This determines whether to search inside invisible text or not.
|
||
Toggles the variable `isearch-invisible' between values
|
||
nil and a non-nil value of the option `search-invisible'
|
||
\(or `open' if `search-invisible' is nil)."
|
||
"match %svisible text"
|
||
(isearch--momentary-message
|
||
(if (setq isearch-invisible
|
||
(if isearch-invisible
|
||
nil (or search-invisible 'open)))
|
||
"match invisible text"
|
||
"match visible text")))
|
||
|
||
|
||
;; Word search
|
||
|
||
(defun word-search-regexp (string &optional lax)
|
||
"Return a regexp which matches words, ignoring punctuation.
|
||
Given STRING, a string of words separated by word delimiters,
|
||
compute a regexp that matches those exact words separated by
|
||
arbitrary punctuation. If the string begins or ends in whitespace,
|
||
the beginning or the end of the string matches arbitrary whitespace.
|
||
Otherwise if LAX is non-nil, the beginning or the end of the string
|
||
need not match a word boundary.
|
||
|
||
Used in `word-search-forward', `word-search-backward',
|
||
`word-search-forward-lax', `word-search-backward-lax'."
|
||
(cond
|
||
((equal string "") "")
|
||
((string-match-p "\\`\\W+\\'" string) "\\W+")
|
||
(t (concat
|
||
(if (string-match-p "\\`\\W" string) "\\W+"
|
||
"\\<")
|
||
(mapconcat 'regexp-quote (split-string string "\\W+" t) "\\W+")
|
||
(if (string-match-p "\\W\\'" string) "\\W+"
|
||
(unless lax "\\>"))))))
|
||
|
||
(defun word-search-backward (string &optional bound noerror count)
|
||
"Search backward from point for STRING, ignoring differences in punctuation.
|
||
Set point to the beginning of the occurrence found, and return point.
|
||
An optional second argument bounds the search; it is a buffer position.
|
||
The match found must not begin before that position. A value of nil
|
||
means search to the beginning of the accessible portion of the buffer.
|
||
Optional third argument, if t, means if fail just return nil (no error).
|
||
If not nil and not t, position at limit of search and return nil.
|
||
Optional fourth argument COUNT, if a positive number, means to search
|
||
for COUNT successive occurrences. If COUNT is negative, search
|
||
forward, instead of backward, for -COUNT occurrences. A value of
|
||
nil means the same as 1.
|
||
With COUNT positive, the match found is the COUNTth to last one (or
|
||
last, if COUNT is 1 or nil) in the buffer located entirely before
|
||
the origin of the search; correspondingly with COUNT negative.
|
||
|
||
Relies on the function `word-search-regexp' to convert a sequence
|
||
of words in STRING to a regexp used to search words without regard
|
||
to punctuation.
|
||
This command does not support character folding, and lax space matching
|
||
has no effect on it."
|
||
(interactive "sWord search backward: ")
|
||
(re-search-backward (word-search-regexp string nil) bound noerror count))
|
||
|
||
(defun word-search-forward (string &optional bound noerror count)
|
||
"Search forward from point for STRING, ignoring differences in punctuation.
|
||
Set point to the end of the occurrence found, and return point.
|
||
An optional second argument bounds the search; it is a buffer position.
|
||
The match found must not end after that position. A value of nil
|
||
means search to the end of the accessible portion of the buffer.
|
||
Optional third argument, if t, means if fail just return nil (no error).
|
||
If not nil and not t, move to limit of search and return nil.
|
||
Optional fourth argument COUNT, if a positive number, means to search
|
||
for COUNT successive occurrences. If COUNT is negative, search
|
||
backward, instead of forward, for -COUNT occurrences. A value of
|
||
nil means the same as 1.
|
||
With COUNT positive, the match found is the COUNTth one (or first,
|
||
if COUNT is 1 or nil) in the buffer located entirely after the
|
||
origin of the search; correspondingly with COUNT negative.
|
||
|
||
Relies on the function `word-search-regexp' to convert a sequence
|
||
of words in STRING to a regexp used to search words without regard
|
||
to punctuation.
|
||
This command does not support character folding, and lax space matching
|
||
has no effect on it."
|
||
(interactive "sWord search: ")
|
||
(re-search-forward (word-search-regexp string nil) bound noerror count))
|
||
|
||
(defun word-search-backward-lax (string &optional bound noerror count)
|
||
"Search backward from point for STRING, ignoring differences in punctuation.
|
||
Set point to the beginning of the occurrence found, and return point.
|
||
|
||
Unlike `word-search-backward', the end of STRING need not match a word
|
||
boundary, unless STRING ends in whitespace.
|
||
|
||
An optional second argument bounds the search; it is a buffer position.
|
||
The match found must not begin before that position. A value of nil
|
||
means search to the beginning of the accessible portion of the buffer.
|
||
Optional third argument, if t, means if fail just return nil (no error).
|
||
If not nil and not t, position at limit of search and return nil.
|
||
Optional fourth argument COUNT, if a positive number, means to search
|
||
for COUNT successive occurrences. If COUNT is negative, search
|
||
forward, instead of backward, for -COUNT occurrences. A value of
|
||
nil means the same as 1.
|
||
With COUNT positive, the match found is the COUNTth to last one (or
|
||
last, if COUNT is 1 or nil) in the buffer located entirely before
|
||
the origin of the search; correspondingly with COUNT negative.
|
||
|
||
Relies on the function `word-search-regexp' to convert a sequence
|
||
of words in STRING to a regexp used to search words without regard
|
||
to punctuation.
|
||
This command does not support character folding, and lax space matching
|
||
has no effect on it."
|
||
(interactive "sWord search backward: ")
|
||
(re-search-backward (word-search-regexp string t) bound noerror count))
|
||
|
||
(defun word-search-forward-lax (string &optional bound noerror count)
|
||
"Search forward from point for STRING, ignoring differences in punctuation.
|
||
Set point to the end of the occurrence found, and return point.
|
||
|
||
Unlike `word-search-forward', the end of STRING need not match a word
|
||
boundary, unless STRING ends in whitespace.
|
||
|
||
An optional second argument bounds the search; it is a buffer position.
|
||
The match found must not end after that position. A value of nil
|
||
means search to the end of the accessible portion of the buffer.
|
||
Optional third argument, if t, means if fail just return nil (no error).
|
||
If not nil and not t, move to limit of search and return nil.
|
||
Optional fourth argument COUNT, if a positive number, means to search
|
||
for COUNT successive occurrences. If COUNT is negative, search
|
||
backward, instead of forward, for -COUNT occurrences. A value of
|
||
nil means the same as 1.
|
||
With COUNT positive, the match found is the COUNTth one (or first,
|
||
if COUNT is 1 or nil) in the buffer located entirely after the
|
||
origin of the search; correspondingly with COUNT negative.
|
||
|
||
Relies on the function `word-search-regexp' to convert a sequence
|
||
of words in STRING to a regexp used to search words without regard
|
||
to punctuation.
|
||
This command does not support character folding, and lax space matching
|
||
has no effect on it."
|
||
(interactive "sWord search: ")
|
||
(re-search-forward (word-search-regexp string t) bound noerror count))
|
||
|
||
;; Symbol search
|
||
|
||
(defun isearch-symbol-regexp (string &optional lax)
|
||
"Return a regexp which matches STRING as a symbol.
|
||
Creates a regexp where STRING is surrounded by symbol delimiters \\_< and \\_>.
|
||
If there are more than one symbol, then compute a regexp that matches
|
||
those exact symbols separated by non-symbol characters. If the string
|
||
begins or ends in whitespace, the beginning or the end of the string
|
||
matches arbitrary non-symbol whitespace. Otherwise if LAX is non-nil,
|
||
the beginning or the end of the string need not match a symbol boundary."
|
||
(let ((not-word-symbol-re
|
||
;; This regexp matches all syntaxes except word and symbol syntax.
|
||
;; FIXME: Replace it with something shorter if possible (bug#14602).
|
||
"\\(?:\\s-\\|\\s.\\|\\s(\\|\\s)\\|\\s\"\\|\\s\\\\|\\s/\\|\\s$\\|\\s'\\|\\s<\\|\\s>\\|\\s@\\|\\s!\\|\\s|\\)+"))
|
||
(cond
|
||
((equal string "") "")
|
||
((string-match-p (format "\\`%s\\'" not-word-symbol-re) string) not-word-symbol-re)
|
||
(t (concat
|
||
(if (string-match-p (format "\\`%s" not-word-symbol-re) string) not-word-symbol-re
|
||
"\\_<")
|
||
(mapconcat 'regexp-quote (split-string string not-word-symbol-re t) not-word-symbol-re)
|
||
(if (string-match-p (format "%s\\'" not-word-symbol-re) string) not-word-symbol-re
|
||
(unless lax "\\_>")))))))
|
||
|
||
(put 'isearch-symbol-regexp 'isearch-message-prefix "symbol ")
|
||
|
||
;; Search with lax whitespace
|
||
|
||
(defun search-forward-lax-whitespace (string &optional bound noerror count)
|
||
"Search forward for STRING, matching a sequence of whitespace chars."
|
||
(let ((search-spaces-regexp search-whitespace-regexp))
|
||
(re-search-forward (regexp-quote string) bound noerror count)))
|
||
|
||
(defun search-backward-lax-whitespace (string &optional bound noerror count)
|
||
"Search backward for STRING, matching a sequence of whitespace chars."
|
||
(let ((search-spaces-regexp search-whitespace-regexp))
|
||
(re-search-backward (regexp-quote string) bound noerror count)))
|
||
|
||
(defun re-search-forward-lax-whitespace (regexp &optional bound noerror count)
|
||
"Search forward for REGEXP, matching a sequence of whitespace chars."
|
||
(let ((search-spaces-regexp search-whitespace-regexp))
|
||
(re-search-forward regexp bound noerror count)))
|
||
|
||
(defun re-search-backward-lax-whitespace (regexp &optional bound noerror count)
|
||
"Search backward for REGEXP, matching a sequence of whitespace chars."
|
||
(let ((search-spaces-regexp search-whitespace-regexp))
|
||
(re-search-backward regexp bound noerror count)))
|
||
|
||
(dolist (old '(re-search-forward-lax-whitespace search-backward-lax-whitespace
|
||
search-forward-lax-whitespace re-search-backward-lax-whitespace))
|
||
(make-obsolete old
|
||
"instead, use (let ((search-spaces-regexp search-whitespace-regexp))
|
||
(re-search-... ...))"
|
||
"25.1"))
|
||
|
||
|
||
(defun isearch-query-replace (&optional arg regexp-flag)
|
||
"Start `query-replace' with string to replace from last search string.
|
||
The ARG (prefix arg if interactive), if non-nil, means replace
|
||
only matches surrounded by word boundaries. A negative prefix
|
||
arg means replace backward. Note that using the prefix arg
|
||
is possible only when `isearch-allow-scroll' is non-nil or
|
||
`isearch-allow-prefix' is non-nil, and it doesn't always provide the
|
||
correct matches for `query-replace', so the preferred way to run word
|
||
replacements from Isearch is `M-s w ... M-%'."
|
||
(interactive
|
||
(list current-prefix-arg))
|
||
(barf-if-buffer-read-only)
|
||
(if regexp-flag (setq isearch-regexp t))
|
||
(let ((case-fold-search isearch-case-fold-search)
|
||
;; set `search-upper-case' to nil to not call
|
||
;; `isearch-no-upper-case-p' in `perform-replace'
|
||
(search-upper-case nil)
|
||
(search-invisible isearch-invisible)
|
||
(replace-lax-whitespace
|
||
isearch-lax-whitespace)
|
||
(replace-regexp-lax-whitespace
|
||
isearch-regexp-lax-whitespace)
|
||
(delimited (and arg (not (eq arg '-))))
|
||
(backward (and arg (eq arg '-)))
|
||
;; Set `isearch-recursive-edit' to nil to prevent calling
|
||
;; `exit-recursive-edit' in `isearch-done' that terminates
|
||
;; the execution of this command when it is non-nil.
|
||
;; We call `exit-recursive-edit' explicitly at the end below.
|
||
(isearch-recursive-edit nil))
|
||
(isearch-done nil t)
|
||
(isearch-clean-overlays)
|
||
(if (and isearch-other-end
|
||
(if backward
|
||
(> isearch-other-end (point))
|
||
(< isearch-other-end (point)))
|
||
(not (and transient-mark-mode mark-active
|
||
(if backward
|
||
(> (mark) (point))
|
||
(< (mark) (point))))))
|
||
(goto-char isearch-other-end))
|
||
(set query-replace-from-history-variable
|
||
(cons isearch-string
|
||
(symbol-value query-replace-from-history-variable)))
|
||
(perform-replace
|
||
isearch-string
|
||
(query-replace-read-to
|
||
isearch-string
|
||
(concat "Query replace"
|
||
(isearch--describe-regexp-mode (or delimited isearch-regexp-function) t)
|
||
(if backward " backward" "")
|
||
(if (and transient-mark-mode mark-active) " in region" ""))
|
||
isearch-regexp)
|
||
t isearch-regexp (or delimited isearch-regexp-function) nil nil
|
||
(if (and transient-mark-mode mark-active) (region-beginning))
|
||
(if (and transient-mark-mode mark-active) (region-end))
|
||
backward))
|
||
(and isearch-recursive-edit (exit-recursive-edit)))
|
||
|
||
(defun isearch-query-replace-regexp (&optional arg)
|
||
"Start `query-replace-regexp' with string to replace from last search string.
|
||
See `isearch-query-replace' for more information."
|
||
(interactive
|
||
(list current-prefix-arg))
|
||
(isearch-query-replace arg t))
|
||
|
||
(defun isearch-occur (regexp &optional nlines)
|
||
"Run `occur' using the last search string as the regexp.
|
||
Interactively, REGEXP is constructed using the search string from the
|
||
last search command. NLINES has the same meaning as in `occur'.
|
||
|
||
If the last search command was a word search, REGEXP is computed from
|
||
the search words, ignoring punctuation. If the last search
|
||
command was a regular expression search, REGEXP is the regular
|
||
expression used in that search. If the last search command searched
|
||
for a literal string, REGEXP is constructed by quoting all the special
|
||
characters in that string."
|
||
(interactive
|
||
(let* ((perform-collect (consp current-prefix-arg))
|
||
(regexp (cond
|
||
((functionp isearch-regexp-function)
|
||
(funcall isearch-regexp-function isearch-string))
|
||
(isearch-regexp-function (word-search-regexp isearch-string))
|
||
(isearch-regexp isearch-string)
|
||
(t (regexp-quote isearch-string)))))
|
||
(list regexp
|
||
(if perform-collect
|
||
;; Perform collect operation
|
||
(if (zerop (regexp-opt-depth regexp))
|
||
;; No subexpression so collect the entire match.
|
||
"\\&"
|
||
;; Get the regexp for collection pattern.
|
||
(let ((default (car occur-collect-regexp-history))
|
||
regexp-collect)
|
||
(with-isearch-suspended
|
||
(setq regexp-collect
|
||
(read-regexp
|
||
(format "Regexp to collect (default %s): " default)
|
||
default 'occur-collect-regexp-history)))
|
||
regexp-collect))
|
||
;; Otherwise normal occur takes numerical prefix argument.
|
||
(when current-prefix-arg
|
||
(prefix-numeric-value current-prefix-arg))))))
|
||
(let ((case-fold-search isearch-case-fold-search)
|
||
;; Set `search-upper-case' to nil to not call
|
||
;; `isearch-no-upper-case-p' in `occur-1'.
|
||
(search-upper-case nil)
|
||
(search-spaces-regexp
|
||
(if (if isearch-regexp
|
||
isearch-regexp-lax-whitespace
|
||
isearch-lax-whitespace)
|
||
search-whitespace-regexp)))
|
||
(occur (if isearch-regexp-function
|
||
(propertize regexp
|
||
'isearch-string isearch-string
|
||
'isearch-regexp-function-descr
|
||
(isearch--describe-regexp-mode isearch-regexp-function))
|
||
regexp)
|
||
nlines)))
|
||
|
||
(declare-function hi-lock-read-face-name "hi-lock" ())
|
||
|
||
(defun isearch-highlight-regexp ()
|
||
"Run `highlight-regexp' with regexp from the current search string.
|
||
It exits Isearch mode and calls `hi-lock-face-buffer' with its regexp
|
||
argument from the last search regexp or a quoted search string,
|
||
and reads its face argument using `hi-lock-read-face-name'."
|
||
(interactive)
|
||
(let (
|
||
;; Set `isearch-recursive-edit' to nil to prevent calling
|
||
;; `exit-recursive-edit' in `isearch-done' that terminates
|
||
;; the execution of this command when it is non-nil.
|
||
;; We call `exit-recursive-edit' explicitly at the end below.
|
||
(isearch-recursive-edit nil))
|
||
(isearch-done nil t)
|
||
(isearch-clean-overlays))
|
||
(require 'hi-lock nil t)
|
||
(let ((regexp (cond ((functionp isearch-regexp-function)
|
||
(funcall isearch-regexp-function isearch-string))
|
||
(isearch-regexp-function (word-search-regexp isearch-string))
|
||
(isearch-regexp isearch-string)
|
||
((if (and (eq isearch-case-fold-search t)
|
||
search-upper-case)
|
||
(isearch-no-upper-case-p
|
||
isearch-string isearch-regexp)
|
||
isearch-case-fold-search)
|
||
;; Turn isearch-string into a case-insensitive
|
||
;; regexp.
|
||
(mapconcat
|
||
(lambda (c)
|
||
(let ((s (string c)))
|
||
(if (string-match "[[:alpha:]]" s)
|
||
(format "[%s%s]" (upcase s) (downcase s))
|
||
(regexp-quote s))))
|
||
isearch-string ""))
|
||
(t (regexp-quote isearch-string)))))
|
||
(hi-lock-face-buffer regexp (hi-lock-read-face-name)))
|
||
(and isearch-recursive-edit (exit-recursive-edit)))
|
||
|
||
|
||
(defun isearch-delete-char ()
|
||
"Discard last input item and move point back.
|
||
Last input means the last character or the last isearch command
|
||
that added or deleted characters from the search string,
|
||
moved point, toggled regexp mode or case-sensitivity, etc.
|
||
If no previous match was done, just beep."
|
||
(interactive)
|
||
(if (null (cdr isearch-cmds))
|
||
(ding)
|
||
(isearch-pop-state))
|
||
(isearch-update))
|
||
|
||
(defun isearch-del-char (&optional arg)
|
||
"Delete character from end of search string and search again.
|
||
Unlike `isearch-delete-char', it only deletes the last character,
|
||
but doesn't cancel the effect of other isearch command.
|
||
If search string is empty, just beep."
|
||
(interactive "p")
|
||
(if (= 0 (length isearch-string))
|
||
(ding)
|
||
(setq isearch-string (substring isearch-string 0
|
||
(- (min (or arg 1)
|
||
(length isearch-string))))
|
||
isearch-message (mapconcat 'isearch-text-char-description
|
||
isearch-string "")))
|
||
;; Do the following before moving point.
|
||
(funcall (or isearch-message-function #'isearch-message) nil t)
|
||
;; Use the isearch-other-end as new starting point to be able
|
||
;; to find the remaining part of the search string again.
|
||
;; This is like what `isearch-search-and-update' does,
|
||
;; but currently it doesn't support deletion of characters
|
||
;; for the case where unsuccessful search may become successful
|
||
;; by deletion of characters.
|
||
(if isearch-other-end (goto-char isearch-other-end))
|
||
(isearch-search)
|
||
(isearch-push-state)
|
||
(isearch-update))
|
||
|
||
(defun isearch-yank-string (string)
|
||
"Pull STRING into search string."
|
||
;; Downcase the string if not supposed to case-fold yanked strings.
|
||
(if (and isearch-case-fold-search
|
||
(eq 'not-yanks search-upper-case))
|
||
(setq string (downcase string)))
|
||
(if isearch-regexp (setq string (regexp-quote string)))
|
||
;; Don't move cursor in reverse search.
|
||
(setq isearch-yank-flag t)
|
||
(isearch-process-search-string
|
||
string (mapconcat 'isearch-text-char-description string "")))
|
||
|
||
(defun isearch-yank-kill ()
|
||
"Pull string from kill ring into search string."
|
||
(interactive)
|
||
(isearch-yank-string (current-kill 0)))
|
||
|
||
(defun isearch-yank-pop ()
|
||
"Replace just-yanked search string with previously killed string."
|
||
(interactive)
|
||
(if (not (memq last-command '(isearch-yank-kill isearch-yank-pop)))
|
||
;; Fall back on `isearch-yank-kill' for the benefits of people
|
||
;; who are used to the old behavior of `M-y' in isearch mode. In
|
||
;; future, this fallback may be changed if we ever change
|
||
;; `yank-pop' to do something like the kill-ring-browser.
|
||
(isearch-yank-kill)
|
||
(isearch-pop-state)
|
||
(isearch-yank-string (current-kill 1))))
|
||
|
||
(defun isearch-yank-x-selection ()
|
||
"Pull current X selection into search string."
|
||
(interactive)
|
||
(isearch-yank-string (gui-get-selection))
|
||
;; If `gui-get-selection' returned the text from the active region,
|
||
;; then it "used" the mark which we should hence deactivate.
|
||
(when select-active-regions (deactivate-mark)))
|
||
|
||
|
||
(defun isearch-mouse-2 (click)
|
||
"Handle mouse-2 in Isearch mode.
|
||
For a click in the echo area, invoke `isearch-yank-x-selection'.
|
||
Otherwise invoke whatever the calling mouse-2 command sequence
|
||
is bound to outside of Isearch."
|
||
(interactive "e")
|
||
(let ((w (posn-window (event-start click)))
|
||
(binding (let ((overriding-terminal-local-map nil))
|
||
(key-binding (this-command-keys-vector) t))))
|
||
(if (and (window-minibuffer-p w)
|
||
(not (minibuffer-window-active-p w))) ; in echo area
|
||
(isearch-yank-x-selection)
|
||
(when (functionp binding)
|
||
(call-interactively binding)))))
|
||
|
||
(declare-function xterm--pasted-text "term/xterm" ())
|
||
|
||
(defun isearch-xterm-paste ()
|
||
"Pull terminal paste into search string."
|
||
(interactive)
|
||
(isearch-yank-string (xterm--pasted-text)))
|
||
|
||
(defun isearch-yank-internal (jumpform)
|
||
"Pull the text from point to the point reached by JUMPFORM.
|
||
JUMPFORM is a lambda expression that takes no arguments and returns
|
||
a buffer position, possibly having moved point to that position.
|
||
For example, it might move point forward by a word and return point,
|
||
or it might return the position of the end of the line."
|
||
(isearch-yank-string
|
||
(save-excursion
|
||
(and (not isearch-forward) isearch-other-end
|
||
(goto-char isearch-other-end))
|
||
(buffer-substring-no-properties (point) (funcall jumpform)))))
|
||
|
||
(defun isearch-yank-char-in-minibuffer (&optional arg)
|
||
"Pull next character from buffer into end of search string in minibuffer."
|
||
(interactive "p")
|
||
(if (eobp)
|
||
(insert
|
||
(with-current-buffer (cadr (buffer-list))
|
||
(buffer-substring-no-properties
|
||
(point) (progn (forward-char arg) (point)))))
|
||
(forward-char arg)))
|
||
|
||
(defun isearch-yank-char (&optional arg)
|
||
"Pull next character from buffer into search string.
|
||
If optional ARG is non-nil, pull in the next ARG characters."
|
||
(interactive "p")
|
||
(isearch-yank-internal (lambda () (forward-char arg) (point))))
|
||
|
||
(declare-function subword-forward "subword" (&optional arg))
|
||
(defun isearch-yank-word-or-char ()
|
||
"Pull next character, subword or word from buffer into search string.
|
||
Subword is used when `subword-mode' is activated. "
|
||
(interactive)
|
||
(isearch-yank-internal
|
||
(lambda ()
|
||
(if (or (= (char-syntax (or (char-after) 0)) ?w)
|
||
(= (char-syntax (or (char-after (1+ (point))) 0)) ?w))
|
||
(if (or (and (boundp 'subword-mode) subword-mode)
|
||
(and (boundp 'superword-mode) superword-mode))
|
||
(subword-forward 1)
|
||
(forward-word 1))
|
||
(forward-char 1))
|
||
(point))))
|
||
|
||
(defun isearch-yank-word (&optional arg)
|
||
"Pull next word from buffer into search string.
|
||
If optional ARG is non-nil, pull in the next ARG words."
|
||
(interactive "p")
|
||
(isearch-yank-internal (lambda () (forward-word arg) (point))))
|
||
|
||
(defun isearch-yank-line (&optional arg)
|
||
"Pull rest of line from buffer into search string.
|
||
If optional ARG is non-nil, yank the next ARG lines."
|
||
(interactive "p")
|
||
(isearch-yank-internal
|
||
(lambda () (let ((inhibit-field-text-motion t))
|
||
(line-end-position (if (eolp) (1+ arg) arg))))))
|
||
|
||
(defun isearch-char-by-name (&optional count)
|
||
"Read a character by its Unicode name and add it to the search string.
|
||
Completion is available like in `read-char-by-name' used by `insert-char'.
|
||
With argument, add COUNT copies of the character."
|
||
(interactive "p")
|
||
(with-isearch-suspended
|
||
(let ((char (read-char-by-name "Add character to search (Unicode name or hex): ")))
|
||
(when char
|
||
(let ((string (if (and (integerp count) (> count 1))
|
||
(make-string count char)
|
||
(char-to-string char))))
|
||
(setq isearch-new-string (concat isearch-string string)
|
||
isearch-new-message (concat isearch-message
|
||
(mapconcat 'isearch-text-char-description
|
||
string ""))))))))
|
||
|
||
(defun isearch-search-and-update ()
|
||
;; Do the search and update the display.
|
||
(when (or isearch-success
|
||
;; Unsuccessful regexp search may become successful by
|
||
;; addition of characters which make isearch-string valid
|
||
isearch-regexp
|
||
;; If the string was found but was completely invisible,
|
||
;; it might now be partly visible, so try again.
|
||
(prog1 isearch-hidden (setq isearch-hidden nil)))
|
||
;; In reverse search, adding stuff at
|
||
;; the end may cause zero or many more chars to be
|
||
;; matched, in the string following point.
|
||
;; Allow all those possibilities without moving point as
|
||
;; long as the match does not extend past search origin.
|
||
(if (and (not isearch-forward) (not isearch-adjusted)
|
||
(condition-case ()
|
||
(let ((case-fold-search isearch-case-fold-search))
|
||
(if (and (eq case-fold-search t) search-upper-case)
|
||
(setq case-fold-search
|
||
(isearch-no-upper-case-p isearch-string isearch-regexp)))
|
||
(looking-at (cond
|
||
((functionp isearch-regexp-function)
|
||
(funcall isearch-regexp-function isearch-string t))
|
||
(isearch-regexp-function (word-search-regexp isearch-string t))
|
||
(isearch-regexp isearch-string)
|
||
(t (regexp-quote isearch-string)))))
|
||
(error nil))
|
||
(or isearch-yank-flag
|
||
(<= (match-end 0)
|
||
(min isearch-opoint isearch-barrier))))
|
||
(progn
|
||
(setq isearch-success t
|
||
isearch-error nil
|
||
isearch-other-end (match-end 0))
|
||
(if (and (eq isearch-case-fold-search t) search-upper-case)
|
||
(setq isearch-case-fold-search
|
||
(isearch-no-upper-case-p isearch-string isearch-regexp))))
|
||
;; Not regexp, not reverse, or no match at point.
|
||
;; Do the following before moving point.
|
||
(funcall (or isearch-message-function #'isearch-message) nil t)
|
||
(if (and isearch-other-end (not isearch-adjusted))
|
||
(goto-char (if isearch-forward isearch-other-end
|
||
(min isearch-opoint
|
||
isearch-barrier
|
||
(1+ isearch-other-end)))))
|
||
(isearch-search)
|
||
))
|
||
(isearch-push-state)
|
||
(if isearch-op-fun (funcall isearch-op-fun))
|
||
(isearch-update))
|
||
|
||
|
||
;; *, ?, }, and | chars can make a regexp more liberal.
|
||
;; They can make a regexp match sooner or make it succeed instead of failing.
|
||
;; So go back to place last successful search started
|
||
;; or to the last ^S/^R (barrier), whichever is nearer.
|
||
;; + needs no special handling because the string must match at least once.
|
||
|
||
(defun isearch-backslash (str)
|
||
"Return t if STR ends in an odd number of backslashes."
|
||
(= (mod (- (length str) (string-match "\\\\*\\'" str)) 2) 1))
|
||
|
||
(defun isearch-fallback (want-backslash &optional allow-invalid to-barrier)
|
||
"Return point to previous successful match to allow regexp liberalization.
|
||
\\<isearch-mode-map>
|
||
Respects \\[isearch-repeat-forward] and \\[isearch-repeat-backward] by \
|
||
stopping at `isearch-barrier' as needed.
|
||
|
||
Do nothing if a backslash is escaping the liberalizing character.
|
||
If WANT-BACKSLASH is non-nil, invert this behavior (for \\} and \\|).
|
||
|
||
Do nothing if regexp has recently been invalid unless optional
|
||
ALLOW-INVALID non-nil.
|
||
|
||
If optional TO-BARRIER non-nil, ignore previous matches and go exactly
|
||
to the barrier."
|
||
;; (eq (not a) (not b)) makes all non-nil values equivalent
|
||
(when (and isearch-regexp (eq (not (isearch-backslash isearch-string))
|
||
(not want-backslash))
|
||
;; We have to check 2 stack frames because the last might be
|
||
;; invalid just because of a backslash.
|
||
(or (not isearch-error)
|
||
(not (isearch--state-error (cadr isearch-cmds)))
|
||
allow-invalid))
|
||
(if to-barrier
|
||
(progn (goto-char isearch-barrier)
|
||
(setq isearch-adjusted t))
|
||
(let* ((stack isearch-cmds)
|
||
(previous (cdr stack)) ; lookbelow in the stack
|
||
(frame (car stack)))
|
||
;; Walk down the stack looking for a valid regexp (as of course only
|
||
;; they can be the previous successful match); this conveniently
|
||
;; removes all bracket-sets and groups that might be in the way, as
|
||
;; well as partial \{\} constructs that the code below leaves behind.
|
||
;; Also skip over postfix operators -- though horrid,
|
||
;; 'ab?\{5,6\}+\{1,2\}*' is perfectly valid.
|
||
(while (and previous
|
||
(or (isearch--state-error frame)
|
||
(let* ((string (isearch--state-string frame))
|
||
(lchar (aref string (1- (length string)))))
|
||
;; The operators aren't always operators; check
|
||
;; backslashes. This doesn't handle the case of
|
||
;; operators at the beginning of the regexp not
|
||
;; being special, but then we should fall back to
|
||
;; the barrier anyway because it's all optional.
|
||
(if (isearch-backslash
|
||
(isearch--state-string (car previous)))
|
||
(eq lchar ?\})
|
||
(memq lchar '(?* ?? ?+))))))
|
||
(setq stack previous previous (cdr previous) frame (car stack)))
|
||
(when stack
|
||
;; `stack' now refers the most recent valid regexp that is not at
|
||
;; all optional in its last term. Now dig one level deeper and find
|
||
;; what matched before that.
|
||
(let ((last-other-end
|
||
(or (and (car previous)
|
||
(isearch--state-other-end (car previous)))
|
||
isearch-barrier)))
|
||
(goto-char (if isearch-forward
|
||
(max last-other-end isearch-barrier)
|
||
(min last-other-end isearch-barrier)))
|
||
(setq isearch-adjusted t)))))))
|
||
|
||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||
;; scrolling within Isearch mode. Alan Mackenzie (acm@muc.de), 2003/2/24
|
||
;;
|
||
;; The idea here is that certain vertical scrolling commands (like C-l
|
||
;; `recenter') should be usable WITHIN Isearch mode. For a command to be
|
||
;; suitable, it must NOT alter the buffer, swap to another buffer or frame,
|
||
;; tamper with isearch's state, or move point. It is unacceptable for the
|
||
;; search string to be scrolled out of the current window. If a command
|
||
;; attempts this, we scroll the text back again.
|
||
;;
|
||
;; We implement this feature with a property called `isearch-scroll'.
|
||
;; If a command's symbol has the value t for this property or for the
|
||
;; `scroll-command' property, it is a scrolling command. The feature
|
||
;; needs to be enabled by setting the customizable variable
|
||
;; `isearch-allow-scroll' to a non-nil value.
|
||
;;
|
||
;; The universal argument commands (e.g. C-u) in simple.el are marked
|
||
;; as scrolling commands, and isearch.el has been amended to allow
|
||
;; prefix arguments to be passed through to scrolling commands. Thus
|
||
;; M-0 C-l will scroll point to the top of the window.
|
||
;;
|
||
;; Horizontal scrolling commands are currently not catered for.
|
||
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
|
||
|
||
;; Set the isearch-scroll property on some standard functions:
|
||
;; Scroll-bar functions:
|
||
(if (fboundp 'scroll-bar-toolkit-scroll)
|
||
(put 'scroll-bar-toolkit-scroll 'isearch-scroll t))
|
||
(if (fboundp 'w32-handle-scroll-bar-event)
|
||
(put 'w32-handle-scroll-bar-event 'isearch-scroll t))
|
||
|
||
;; Commands which scroll the window (some scroll commands
|
||
;; already have the `scroll-command' property on them):
|
||
(put 'recenter 'isearch-scroll t)
|
||
(put 'recenter-top-bottom 'isearch-scroll t)
|
||
(put 'reposition-window 'isearch-scroll t)
|
||
|
||
;; Commands which act on the other window
|
||
(put 'list-buffers 'isearch-scroll t)
|
||
(put 'scroll-other-window 'isearch-scroll t)
|
||
(put 'scroll-other-window-down 'isearch-scroll t)
|
||
(put 'beginning-of-buffer-other-window 'isearch-scroll t)
|
||
(put 'end-of-buffer-other-window 'isearch-scroll t)
|
||
|
||
;; Commands which change the window layout
|
||
(put 'delete-other-windows 'isearch-scroll t)
|
||
(put 'balance-windows 'isearch-scroll t)
|
||
(put 'split-window-right 'isearch-scroll t)
|
||
(put 'split-window-below 'isearch-scroll t)
|
||
(put 'enlarge-window 'isearch-scroll t)
|
||
|
||
;; Aliases for split-window-*
|
||
(put 'split-window-vertically 'isearch-scroll t)
|
||
(put 'split-window-horizontally 'isearch-scroll t)
|
||
|
||
;; Universal argument commands
|
||
(put 'universal-argument 'isearch-scroll t)
|
||
(put 'universal-argument-more 'isearch-scroll t)
|
||
(put 'negative-argument 'isearch-scroll t)
|
||
(put 'digit-argument 'isearch-scroll t)
|
||
|
||
(defcustom isearch-allow-scroll nil
|
||
"Whether scrolling is allowed during incremental search.
|
||
If non-nil, scrolling commands can be used in Isearch mode.
|
||
However, the current match will never scroll offscreen.
|
||
If nil, scrolling commands will first cancel Isearch mode."
|
||
:type 'boolean
|
||
:group 'isearch)
|
||
|
||
(defcustom isearch-allow-prefix t
|
||
"Whether prefix arguments are allowed during incremental search.
|
||
If non-nil, entering a prefix argument will not terminate the
|
||
search. This option is ignored \(presumed t) when
|
||
`isearch-allow-scroll' is set."
|
||
:version "24.4"
|
||
:type 'boolean
|
||
:group 'isearch)
|
||
|
||
(defun isearch-string-out-of-window (isearch-point)
|
||
"Test whether the search string is currently outside of the window.
|
||
Return nil if it's completely visible, or if point is visible,
|
||
together with as much of the search string as will fit; the symbol
|
||
`above' if we need to scroll the text downwards; the symbol `below',
|
||
if upwards."
|
||
(let ((w-start (window-group-start))
|
||
(w-end (window-group-end nil t))
|
||
(w-L1 (save-excursion
|
||
(save-selected-window (move-to-window-group-line 1) (point))))
|
||
(w-L-1 (save-excursion
|
||
(save-selected-window (move-to-window-group-line -1) (point))))
|
||
start end) ; start and end of search string in buffer
|
||
(if isearch-forward
|
||
(setq end isearch-point start (or isearch-other-end isearch-point))
|
||
(setq start isearch-point end (or isearch-other-end isearch-point)))
|
||
(cond ((or (and (>= start w-start) (<= end w-end))
|
||
(if isearch-forward
|
||
(and (>= isearch-point w-L-1) (< isearch-point w-end)) ; point on Line -1
|
||
(and (>= isearch-point w-start) (< isearch-point w-L1)))) ; point on Line 0
|
||
nil)
|
||
((and (< start w-start)
|
||
(< isearch-point w-L-1))
|
||
'above)
|
||
(t 'below))))
|
||
|
||
(defun isearch-back-into-window (above isearch-point)
|
||
"Scroll the window to bring the search string back into view.
|
||
Restore point to ISEARCH-POINT in the process. ABOVE is t when the
|
||
search string is above the top of the window, nil when it is beneath
|
||
the bottom."
|
||
(let (start end)
|
||
(if isearch-forward
|
||
(setq end isearch-point start (or isearch-other-end isearch-point))
|
||
(setq start isearch-point end (or isearch-other-end isearch-point)))
|
||
(if above
|
||
(progn
|
||
(goto-char start)
|
||
(recenter-window-group 0)
|
||
(when (>= isearch-point (window-group-end nil t))
|
||
(goto-char isearch-point)
|
||
(recenter-window-group -1)))
|
||
(goto-char end)
|
||
(recenter-window-group -1)
|
||
(when (< isearch-point (window-group-start))
|
||
(goto-char isearch-point)
|
||
(recenter-window-group 0))))
|
||
(goto-char isearch-point))
|
||
|
||
(defvar isearch-pre-scroll-point nil)
|
||
|
||
(defun isearch-pre-command-hook ()
|
||
"Decide whether to exit Isearch mode before executing the command.
|
||
Don't exit Isearch if the key sequence that invoked this command
|
||
is bound in `isearch-mode-map', or if the invoked command is
|
||
a prefix argument command (when `isearch-allow-prefix' is non-nil),
|
||
or it is a scrolling command (when `isearch-allow-scroll' is non-nil).
|
||
Otherwise, exit Isearch (when `search-exit-option' is non-nil)
|
||
before the command is executed globally with terminated Isearch."
|
||
(let* ((key (this-single-command-keys))
|
||
(main-event (aref key 0)))
|
||
(cond
|
||
;; Don't exit Isearch if we're in the middle of some
|
||
;; `set-transient-map' thingy like `universal-argument--mode'.
|
||
((not (eq overriding-terminal-local-map isearch--saved-overriding-local-map)))
|
||
;; Don't exit Isearch for isearch key bindings.
|
||
((commandp (lookup-key isearch-mode-map key nil)))
|
||
;; Optionally edit the search string instead of exiting.
|
||
((eq search-exit-option 'edit)
|
||
(setq this-command 'isearch-edit-string))
|
||
;; Handle a scrolling function or prefix argument.
|
||
((or (and isearch-allow-prefix
|
||
(memq this-command '(universal-argument universal-argument-more
|
||
digit-argument negative-argument)))
|
||
(and isearch-allow-scroll
|
||
(symbolp this-command)
|
||
(or (eq (get this-command 'isearch-scroll) t)
|
||
(eq (get this-command 'scroll-command) t))))
|
||
(when isearch-allow-scroll
|
||
(setq isearch-pre-scroll-point (point))))
|
||
;; A mouse click on the isearch message starts editing the search string.
|
||
((and (eq (car-safe main-event) 'down-mouse-1)
|
||
(window-minibuffer-p (posn-window (event-start main-event))))
|
||
;; Swallow the up-event.
|
||
(read-event)
|
||
(setq this-command 'isearch-edit-string))
|
||
;; Other characters terminate the search and are then executed normally.
|
||
(search-exit-option
|
||
(isearch-done)
|
||
(isearch-clean-overlays))
|
||
;; If search-exit-option is nil, run the command without exiting Isearch.
|
||
(t
|
||
(isearch-process-search-string key key)))))
|
||
|
||
(defun isearch-post-command-hook ()
|
||
(when isearch-pre-scroll-point
|
||
(let ((ab-bel (isearch-string-out-of-window isearch-pre-scroll-point)))
|
||
(if ab-bel
|
||
(isearch-back-into-window (eq ab-bel 'above) isearch-pre-scroll-point)
|
||
(goto-char isearch-pre-scroll-point)))
|
||
(setq isearch-pre-scroll-point nil)
|
||
(isearch-update)))
|
||
|
||
(defun isearch-quote-char (&optional count)
|
||
"Quote special characters for incremental search.
|
||
With argument, add COUNT copies of the character."
|
||
(interactive "p")
|
||
(let ((char (read-quoted-char (isearch-message t))))
|
||
(unless (characterp char)
|
||
(user-error "%s is not a valid character"
|
||
(key-description (vector char))))
|
||
;; Assume character codes 0200 - 0377 stand for characters in some
|
||
;; single-byte character set, and convert them to Emacs
|
||
;; characters.
|
||
(if (and isearch-regexp isearch-regexp-lax-whitespace (= char ?\s))
|
||
(if (subregexp-context-p isearch-string (length isearch-string))
|
||
(isearch-process-search-string "[ ]" " ")
|
||
(isearch-process-search-char char count))
|
||
;; This used to assume character codes 0240 - 0377 stand for
|
||
;; characters in some single-byte character set, and converted them
|
||
;; to Emacs characters. But in 23.1 this feature is deprecated
|
||
;; in favor of inserting the corresponding Unicode characters.
|
||
;; (and enable-multibyte-characters
|
||
;; (>= char ?\200)
|
||
;; (<= char ?\377)
|
||
;; (setq char (unibyte-char-to-multibyte char)))
|
||
(isearch-process-search-char char count))))
|
||
|
||
(defun isearch-printing-char (&optional char count)
|
||
"Add this ordinary printing CHAR to the search string and search.
|
||
With argument, add COUNT copies of the character."
|
||
(interactive (list last-command-event
|
||
(prefix-numeric-value current-prefix-arg)))
|
||
(let ((char (or char last-command-event)))
|
||
(if (= char ?\S-\ )
|
||
(setq char ?\s))
|
||
(if current-input-method
|
||
(isearch-process-search-multibyte-characters char count)
|
||
(isearch-process-search-char char count))))
|
||
|
||
(defun isearch-process-search-char (char &optional count)
|
||
"Add CHAR to the search string, COUNT times.
|
||
Search is updated accordingly."
|
||
;; * and ? are special in regexps when not preceded by \.
|
||
;; } and | are special in regexps when preceded by \.
|
||
;; Nothing special for + because it matches at least once.
|
||
(cond
|
||
((memq char '(?* ??)) (isearch-fallback nil))
|
||
((eq char ?\}) (isearch-fallback t t))
|
||
((eq char ?|) (isearch-fallback t nil t)))
|
||
|
||
;; Append the char(s) to the search string,
|
||
;; update the message and re-search.
|
||
(let* ((string (if (and (integerp count) (> count 1))
|
||
(make-string count char)
|
||
(char-to-string char)))
|
||
(message (if (>= char ?\200)
|
||
string
|
||
(mapconcat 'isearch-text-char-description string ""))))
|
||
(isearch-process-search-string string message)))
|
||
|
||
(defun isearch-process-search-string (string message)
|
||
(setq isearch-string (concat isearch-string string)
|
||
isearch-message (concat isearch-message message))
|
||
(isearch-search-and-update))
|
||
|
||
|
||
;; Search Ring
|
||
|
||
(defun isearch-ring-adjust1 (advance)
|
||
;; Helper for isearch-ring-adjust
|
||
(let* ((ring (if isearch-regexp regexp-search-ring search-ring))
|
||
(length (length ring))
|
||
(yank-pointer-name (if isearch-regexp
|
||
'regexp-search-ring-yank-pointer
|
||
'search-ring-yank-pointer))
|
||
(yank-pointer (eval yank-pointer-name)))
|
||
(if (zerop length)
|
||
()
|
||
(set yank-pointer-name
|
||
(setq yank-pointer
|
||
(mod (+ (or yank-pointer (if advance 0 -1))
|
||
(if advance -1 1))
|
||
length)))
|
||
(setq isearch-string (nth yank-pointer ring)
|
||
isearch-message (mapconcat 'isearch-text-char-description
|
||
isearch-string "")))))
|
||
|
||
(defun isearch-ring-adjust (advance)
|
||
;; Helper for isearch-ring-advance and isearch-ring-retreat
|
||
(isearch-ring-adjust1 advance)
|
||
(if search-ring-update
|
||
(progn
|
||
(funcall (or isearch-message-function #'isearch-message) nil t)
|
||
(isearch-search)
|
||
(isearch-push-state)
|
||
(isearch-update))
|
||
;; Otherwise, edit the search string instead. Note that there is
|
||
;; no need to push the search state after isearch-edit-string here
|
||
;; since isearch-edit-string already pushes its state
|
||
(isearch-edit-string)))
|
||
|
||
(defun isearch-ring-advance ()
|
||
"Advance to the next search string in the ring."
|
||
;; This could be more general to handle a prefix arg, but who would use it.
|
||
(interactive)
|
||
(isearch-ring-adjust 'advance))
|
||
|
||
(defun isearch-ring-retreat ()
|
||
"Retreat to the previous search string in the ring."
|
||
(interactive)
|
||
(isearch-ring-adjust nil))
|
||
|
||
(defun isearch-complete1 ()
|
||
;; Helper for isearch-complete and isearch-complete-edit
|
||
;; Return t if completion OK, nil if no completion exists.
|
||
(let* ((ring (if isearch-regexp regexp-search-ring search-ring))
|
||
(completion-ignore-case case-fold-search)
|
||
(completion (try-completion isearch-string ring)))
|
||
(cond
|
||
((eq completion t)
|
||
;; isearch-string stays the same
|
||
t)
|
||
((or completion ; not nil, must be a string
|
||
(= 0 (length isearch-string))) ; shouldn't have to say this
|
||
(if (equal completion isearch-string) ;; no extension?
|
||
(progn
|
||
(if completion-auto-help
|
||
(with-output-to-temp-buffer "*Isearch completions*"
|
||
(display-completion-list
|
||
(all-completions isearch-string ring))))
|
||
t)
|
||
(and completion
|
||
(setq isearch-string completion))))
|
||
(t
|
||
(message "No completion") ; waits a second if in minibuffer
|
||
nil))))
|
||
|
||
(defun isearch-complete ()
|
||
"Complete the search string from the strings on the search ring.
|
||
The completed string is then editable in the minibuffer.
|
||
If there is no completion possible, say so and continue searching."
|
||
(interactive)
|
||
(if (isearch-complete1)
|
||
(progn (setq isearch-message
|
||
(mapconcat 'isearch-text-char-description
|
||
isearch-string ""))
|
||
(isearch-edit-string))
|
||
;; else
|
||
(sit-for 1)
|
||
(isearch-update)))
|
||
|
||
(defun isearch-complete-edit ()
|
||
"Same as `isearch-complete' except in the minibuffer."
|
||
(interactive)
|
||
(setq isearch-string (field-string))
|
||
(if (isearch-complete1)
|
||
(progn
|
||
(delete-field)
|
||
(insert isearch-string))))
|
||
|
||
|
||
;; Message string
|
||
|
||
(defun isearch-message (&optional c-q-hack ellipsis)
|
||
;; Generate and print the message string.
|
||
|
||
;; N.B.: This function should always be called with point at the
|
||
;; search point, because in certain (rare) circumstances, undesired
|
||
;; scrolling can happen when point is elsewhere. These
|
||
;; circumstances are when follow-mode is active, the search string
|
||
;; spans two (or several) windows, and the message about to be
|
||
;; displayed will cause the echo area to expand.
|
||
(let ((cursor-in-echo-area ellipsis)
|
||
(m isearch-message)
|
||
(fail-pos (isearch-fail-pos t)))
|
||
;; Highlight failed part
|
||
(when fail-pos
|
||
(setq m (copy-sequence m))
|
||
(add-text-properties fail-pos (length m) '(face isearch-fail) m)
|
||
;; Highlight failed trailing whitespace
|
||
(when (string-match " +$" m)
|
||
(add-text-properties (match-beginning 0) (match-end 0)
|
||
'(face trailing-whitespace) m)))
|
||
(setq m (concat
|
||
(isearch-message-prefix ellipsis isearch-nonincremental)
|
||
m
|
||
(isearch-message-suffix c-q-hack)))
|
||
(if c-q-hack m (let ((message-log-max nil)) (message "%s" m)))))
|
||
|
||
(defun isearch--describe-regexp-mode (regexp-function &optional space-before)
|
||
"Make a string for describing REGEXP-FUNCTION.
|
||
If SPACE-BEFORE is non-nil, put a space before, instead of after,
|
||
the word mode."
|
||
(when (eq regexp-function t)
|
||
(setq regexp-function #'word-search-regexp))
|
||
(let ((description
|
||
(cond
|
||
;; 1. Do not use a description on the default search mode,
|
||
;; but only if the default search mode is non-nil.
|
||
((or (and search-default-mode
|
||
(equal search-default-mode regexp-function))
|
||
;; Special case where `search-default-mode' is t
|
||
;; (defaults to regexp searches).
|
||
(and (eq search-default-mode t)
|
||
(eq search-default-mode isearch-regexp))) "")
|
||
;; 2. Use the `isearch-message-prefix' set for
|
||
;; `regexp-function' if available.
|
||
(regexp-function
|
||
(and (symbolp regexp-function)
|
||
(or (get regexp-function 'isearch-message-prefix)
|
||
"")))
|
||
;; 3. Else if `isearch-regexp' is non-nil, set description
|
||
;; to "regexp ".
|
||
(isearch-regexp "regexp ")
|
||
;; 4. Else if we're in literal mode (and if the default
|
||
;; mode is also not literal), describe it.
|
||
((functionp search-default-mode) "literal ")
|
||
;; 5. And finally, if none of the above is true, set the
|
||
;; description to an empty string.
|
||
(t ""))))
|
||
(if space-before
|
||
;; Move space from the end to the beginning.
|
||
(replace-regexp-in-string "\\(.*\\) \\'" " \\1" description)
|
||
description)))
|
||
(define-obsolete-function-alias 'isearch--describe-word-mode
|
||
'isearch--describe-regexp-mode "25.1")
|
||
|
||
(defun isearch-message-prefix (&optional ellipsis nonincremental)
|
||
;; If about to search, and previous search regexp was invalid,
|
||
;; check that it still is. If it is valid now,
|
||
;; let the message we display while searching say that it is valid.
|
||
(and isearch-error ellipsis
|
||
(condition-case ()
|
||
(progn (re-search-forward isearch-string (point) t)
|
||
(setq isearch-error nil))
|
||
(error nil)))
|
||
;; If currently failing, display no ellipsis.
|
||
(or isearch-success (setq ellipsis nil))
|
||
(let ((m (concat (if isearch-success "" "failing ")
|
||
(if isearch-adjusted "pending " "")
|
||
(if (and isearch-wrapped
|
||
(not isearch-wrap-function)
|
||
(if isearch-forward
|
||
(> (point) isearch-opoint)
|
||
(< (point) isearch-opoint)))
|
||
"over")
|
||
(if isearch-wrapped "wrapped ")
|
||
(let ((prefix ""))
|
||
(advice-function-mapc
|
||
(lambda (_ props)
|
||
(let ((np (cdr (assq 'isearch-message-prefix props))))
|
||
(if np (setq prefix (concat np prefix)))))
|
||
isearch-filter-predicate)
|
||
prefix)
|
||
(isearch--describe-regexp-mode isearch-regexp-function)
|
||
(cond
|
||
(multi-isearch-file-list "multi-file ")
|
||
(multi-isearch-buffer-list "multi-buffer ")
|
||
(t ""))
|
||
(or isearch-message-prefix-add "")
|
||
(if nonincremental "search" "I-search")
|
||
(if isearch-forward "" " backward")
|
||
(if current-input-method
|
||
;; Input methods for RTL languages use RTL
|
||
;; characters for their title, and that messes
|
||
;; up the display of search text after the prompt.
|
||
(bidi-string-mark-left-to-right
|
||
(concat " [" current-input-method-title "]: "))
|
||
": ")
|
||
)))
|
||
(propertize (concat (upcase (substring m 0 1)) (substring m 1))
|
||
'face 'minibuffer-prompt)))
|
||
|
||
(defun isearch-message-suffix (&optional c-q-hack)
|
||
(concat (if c-q-hack "^Q" "")
|
||
(if isearch-error
|
||
(concat " [" isearch-error "]")
|
||
"")
|
||
(or isearch-message-suffix-add "")))
|
||
|
||
|
||
;; Searching
|
||
|
||
(defvar isearch-search-fun-function 'isearch-search-fun-default
|
||
"Non-default value overrides the behavior of `isearch-search-fun-default'.
|
||
This variable's value should be a function, which will be called
|
||
with no arguments, and should return a function that takes three
|
||
arguments: STRING, BOUND, and NOERROR. STRING is the string to
|
||
be searched for. See `re-search-forward' for the meaning of
|
||
BOUND and NOERROR arguments.
|
||
|
||
This returned function will be used by `isearch-search-string' to
|
||
search for the first occurrence of STRING.")
|
||
|
||
(defun isearch-search-fun ()
|
||
"Return the function to use for the search.
|
||
Can be changed via `isearch-search-fun-function' for special needs."
|
||
(funcall (or isearch-search-fun-function 'isearch-search-fun-default)))
|
||
|
||
(defun isearch--lax-regexp-function-p ()
|
||
"Non-nil if next regexp-function call should be lax."
|
||
(not (or isearch-nonincremental
|
||
(null (car isearch-cmds))
|
||
(eq (length isearch-string)
|
||
(length (isearch--state-string
|
||
(car isearch-cmds)))))))
|
||
|
||
(defun isearch-search-fun-default ()
|
||
"Return default functions to use for the search."
|
||
(lambda (string &optional bound noerror count)
|
||
;; Use lax versions to not fail at the end of the word while
|
||
;; the user adds and removes characters in the search string
|
||
;; (or when using nonincremental word isearch)
|
||
(let ((search-spaces-regexp (when (cond
|
||
(isearch-regexp isearch-regexp-lax-whitespace)
|
||
(t isearch-lax-whitespace))
|
||
search-whitespace-regexp)))
|
||
(condition-case er
|
||
(funcall
|
||
(if isearch-forward #'re-search-forward #'re-search-backward)
|
||
(cond (isearch-regexp-function
|
||
(let ((lax (and (not bound) (isearch--lax-regexp-function-p))))
|
||
(when lax
|
||
(setq isearch-adjusted t))
|
||
(if (functionp isearch-regexp-function)
|
||
(funcall isearch-regexp-function string lax)
|
||
(word-search-regexp string lax))))
|
||
(isearch-regexp string)
|
||
(t (regexp-quote string)))
|
||
bound noerror count)
|
||
(search-failed
|
||
(signal (car er)
|
||
(let ((prefix (get isearch-regexp-function 'isearch-message-prefix)))
|
||
(if (and isearch-regexp-function (stringp prefix))
|
||
(list (format "%s [using %ssearch]" string prefix))
|
||
(cdr er)))))))))
|
||
|
||
(defun isearch-search-string (string bound noerror)
|
||
"Search for the first occurrence of STRING or its translation.
|
||
STRING's characters are translated using `translation-table-for-input'
|
||
if that is non-nil.
|
||
If found, move point to the end of the occurrence,
|
||
update the match data, and return point.
|
||
An optional second argument bounds the search; it is a buffer position.
|
||
The match found must not extend after that position.
|
||
Optional third argument, if t, means if fail just return nil (no error).
|
||
If not nil and not t, move to limit of search and return nil."
|
||
(let* ((func (isearch-search-fun))
|
||
(pos1 (save-excursion (funcall func string bound noerror)))
|
||
pos2)
|
||
(when (and
|
||
;; Avoid "obsolete" warnings for translation-table-for-input.
|
||
(with-no-warnings
|
||
(char-table-p translation-table-for-input))
|
||
(multibyte-string-p string)
|
||
;; Minor optimization.
|
||
(string-match-p "[^[:ascii:]]" string))
|
||
(let ((translated
|
||
(apply 'string
|
||
(mapcar (lambda (c)
|
||
(or
|
||
;; Avoid "obsolete" warnings for
|
||
;; translation-table-for-input.
|
||
(with-no-warnings
|
||
(aref translation-table-for-input c))
|
||
c))
|
||
string)))
|
||
match-data)
|
||
(when translated
|
||
(save-match-data
|
||
(save-excursion
|
||
(if (setq pos2 (funcall func translated bound noerror))
|
||
(setq match-data (match-data t)))))
|
||
(when (and pos2
|
||
(or (not pos1)
|
||
(if isearch-forward (< pos2 pos1) (> pos2 pos1))))
|
||
(setq pos1 pos2)
|
||
(set-match-data match-data)))))
|
||
(when pos1
|
||
;; When using multiple buffers isearch, switch to the new buffer here,
|
||
;; because `save-excursion' above doesn't allow doing it inside funcall.
|
||
(if (and multi-isearch-next-buffer-current-function
|
||
(buffer-live-p multi-isearch-current-buffer))
|
||
(switch-to-buffer multi-isearch-current-buffer))
|
||
(goto-char pos1)
|
||
pos1)))
|
||
|
||
(defun isearch-search ()
|
||
;; Do the search with the current search string.
|
||
(if (and (eq isearch-case-fold-search t) search-upper-case)
|
||
(setq isearch-case-fold-search
|
||
(isearch-no-upper-case-p isearch-string isearch-regexp)))
|
||
(condition-case lossage
|
||
(let ((inhibit-point-motion-hooks isearch-invisible)
|
||
(inhibit-quit nil)
|
||
(case-fold-search isearch-case-fold-search)
|
||
(search-invisible isearch-invisible)
|
||
(retry t))
|
||
(setq isearch-error nil)
|
||
(while retry
|
||
(setq isearch-success
|
||
(isearch-search-string isearch-string nil t))
|
||
;; Clear RETRY unless the search predicate says
|
||
;; to skip this search hit.
|
||
(if (or (not isearch-success)
|
||
(bobp) (eobp)
|
||
(= (match-beginning 0) (match-end 0))
|
||
(funcall isearch-filter-predicate
|
||
(match-beginning 0) (match-end 0)))
|
||
(setq retry nil)))
|
||
(setq isearch-just-started nil)
|
||
(if isearch-success
|
||
(setq isearch-other-end
|
||
(if isearch-forward (match-beginning 0) (match-end 0)))))
|
||
|
||
(quit (isearch-unread ?\C-g)
|
||
(setq isearch-success nil))
|
||
|
||
(invalid-regexp
|
||
(setq isearch-error (car (cdr lossage)))
|
||
(cond
|
||
((string-match
|
||
"\\`Premature \\|\\`Unmatched \\|\\`Invalid "
|
||
isearch-error)
|
||
(setq isearch-error "incomplete input"))
|
||
((and (not isearch-regexp)
|
||
(string-match "\\`Regular expression too big" isearch-error))
|
||
(cond
|
||
(isearch-regexp-function
|
||
(setq isearch-error "Too many words"))
|
||
((and isearch-lax-whitespace search-whitespace-regexp)
|
||
(setq isearch-error "Too many spaces for whitespace matching"))))))
|
||
|
||
(search-failed
|
||
(setq isearch-success nil)
|
||
(setq isearch-error (nth 2 lossage)))
|
||
|
||
(error
|
||
;; stack overflow in regexp search.
|
||
(setq isearch-error (format "%s" lossage))))
|
||
|
||
(if isearch-success
|
||
nil
|
||
;; Ding if failed this time after succeeding last time.
|
||
(and (isearch--state-success (car isearch-cmds))
|
||
(ding))
|
||
(if (functionp (isearch--state-pop-fun (car isearch-cmds)))
|
||
(funcall (isearch--state-pop-fun (car isearch-cmds))
|
||
(car isearch-cmds)))
|
||
(goto-char (isearch--state-point (car isearch-cmds)))))
|
||
|
||
|
||
;; Called when opening an overlay, and we are still in isearch.
|
||
(defun isearch-open-overlay-temporary (ov)
|
||
(if (not (null (overlay-get ov 'isearch-open-invisible-temporary)))
|
||
;; Some modes would want to open the overlays temporary during
|
||
;; isearch in their own way, they should set the
|
||
;; `isearch-open-invisible-temporary' to a function doing this.
|
||
(funcall (overlay-get ov 'isearch-open-invisible-temporary) ov nil)
|
||
;; Store the values for the `invisible' property, and then set it to nil.
|
||
;; This way the text hidden by this overlay becomes visible.
|
||
|
||
;; In 19.34 this does not exist so I cannot test it.
|
||
(overlay-put ov 'isearch-invisible (overlay-get ov 'invisible))
|
||
(overlay-put ov 'invisible nil)))
|
||
|
||
|
||
;; This is called at the end of isearch. It will open the overlays
|
||
;; that contain the latest match. Obviously in case of a C-g the
|
||
;; point returns to the original location which surely is not contain
|
||
;; in any of these overlays, se we are safe in this case too.
|
||
(defun isearch-open-necessary-overlays (ov)
|
||
(let ((inside-overlay (and (> (point) (overlay-start ov))
|
||
(<= (point) (overlay-end ov))))
|
||
;; If this exists it means that the overlay was opened using
|
||
;; this function, not by us tweaking the overlay properties.
|
||
(fct-temp (overlay-get ov 'isearch-open-invisible-temporary)))
|
||
(when (or inside-overlay (not fct-temp))
|
||
;; restore the values for the `invisible' properties.
|
||
(overlay-put ov 'invisible (overlay-get ov 'isearch-invisible))
|
||
(overlay-put ov 'isearch-invisible nil))
|
||
(if inside-overlay
|
||
(funcall (overlay-get ov 'isearch-open-invisible) ov)
|
||
(if fct-temp
|
||
(funcall fct-temp ov t)))))
|
||
|
||
;; This is called when exiting isearch. It closes the temporary
|
||
;; opened overlays, except the ones that contain the latest match.
|
||
(defun isearch-clean-overlays ()
|
||
(when isearch-opened-overlays
|
||
(mapc 'isearch-open-necessary-overlays isearch-opened-overlays)
|
||
(setq isearch-opened-overlays nil)))
|
||
|
||
|
||
(defun isearch-intersects-p (start0 end0 start1 end1)
|
||
"Return t if regions START0..END0 and START1..END1 intersect."
|
||
(or (and (>= start0 start1) (< start0 end1))
|
||
(and (> end0 start1) (<= end0 end1))
|
||
(and (>= start1 start0) (< start1 end0))
|
||
(and (> end1 start0) (<= end1 end0))))
|
||
|
||
|
||
;; Verify if the current match is outside of each element of
|
||
;; `isearch-opened-overlays', if so close that overlay.
|
||
|
||
(defun isearch-close-unnecessary-overlays (begin end)
|
||
(let ((overlays isearch-opened-overlays))
|
||
(setq isearch-opened-overlays nil)
|
||
(dolist (ov overlays)
|
||
(if (isearch-intersects-p begin end (overlay-start ov) (overlay-end ov))
|
||
(push ov isearch-opened-overlays)
|
||
(let ((fct-temp (overlay-get ov 'isearch-open-invisible-temporary)))
|
||
(if fct-temp
|
||
;; If this exists it means that the overlay was opened
|
||
;; using this function, not by us tweaking the overlay
|
||
;; properties.
|
||
(funcall fct-temp ov t)
|
||
(overlay-put ov 'invisible (overlay-get ov 'isearch-invisible))
|
||
(overlay-put ov 'isearch-invisible nil)))))))
|
||
|
||
|
||
(defun isearch-range-invisible (beg end)
|
||
"Return t if all the text from BEG to END is invisible."
|
||
(when (/= beg end)
|
||
;; Check that invisibility runs up to END.
|
||
(save-excursion
|
||
(goto-char beg)
|
||
(let (;; can-be-opened keeps track if we can open some overlays.
|
||
(can-be-opened (eq search-invisible 'open))
|
||
;; the list of overlays that could be opened
|
||
(crt-overlays nil))
|
||
(when (and can-be-opened isearch-hide-immediately)
|
||
(isearch-close-unnecessary-overlays beg end))
|
||
;; If the following character is currently invisible,
|
||
;; skip all characters with that same `invisible' property value.
|
||
;; Do that over and over.
|
||
(while (and (< (point) end) (invisible-p (point)))
|
||
(if (invisible-p (get-text-property (point) 'invisible))
|
||
(progn
|
||
(goto-char (next-single-property-change (point) 'invisible
|
||
nil end))
|
||
;; if text is hidden by an `invisible' text property
|
||
;; we cannot open it at all.
|
||
(setq can-be-opened nil))
|
||
(when can-be-opened
|
||
(let ((overlays (overlays-at (point)))
|
||
ov-list
|
||
o
|
||
invis-prop)
|
||
(while overlays
|
||
(setq o (car overlays)
|
||
invis-prop (overlay-get o 'invisible))
|
||
(if (invisible-p invis-prop)
|
||
(if (overlay-get o 'isearch-open-invisible)
|
||
(setq ov-list (cons o ov-list))
|
||
;; We found one overlay that cannot be
|
||
;; opened, that means the whole chunk
|
||
;; cannot be opened.
|
||
(setq can-be-opened nil)))
|
||
(setq overlays (cdr overlays)))
|
||
(if can-be-opened
|
||
;; It makes sense to append to the open
|
||
;; overlays list only if we know that this is
|
||
;; t.
|
||
(setq crt-overlays (append ov-list crt-overlays)))))
|
||
(goto-char (next-overlay-change (point)))))
|
||
;; See if invisibility reaches up thru END.
|
||
(if (>= (point) end)
|
||
(if (and can-be-opened (consp crt-overlays))
|
||
(progn
|
||
(setq isearch-opened-overlays
|
||
(append isearch-opened-overlays crt-overlays))
|
||
(mapc 'isearch-open-overlay-temporary crt-overlays)
|
||
nil)
|
||
(setq isearch-hidden t)))))))
|
||
|
||
(defun isearch-filter-visible (beg end)
|
||
"Test whether the current search hit is visible at least partially.
|
||
Return non-nil if the text from BEG to END is visible to Isearch as
|
||
determined by `isearch-range-invisible' unless invisible text can be
|
||
searched too when `search-invisible' is t."
|
||
(or (eq search-invisible t)
|
||
(not (isearch-range-invisible beg end))))
|
||
|
||
|
||
;; General utilities
|
||
|
||
(defun isearch-no-upper-case-p (string regexp-flag)
|
||
"Return t if there are no upper case chars in STRING.
|
||
If REGEXP-FLAG is non-nil, disregard letters preceded by `\\' (but not `\\\\')
|
||
since they have special meaning in a regexp."
|
||
(let (quote-flag (i 0) (len (length string)) found)
|
||
(while (and (not found) (< i len))
|
||
(let ((char (aref string i)))
|
||
(if (and regexp-flag (eq char ?\\))
|
||
(setq quote-flag (not quote-flag))
|
||
(if (and (not quote-flag) (not (eq char (downcase char))))
|
||
(setq found t))
|
||
(setq quote-flag nil)))
|
||
(setq i (1+ i)))
|
||
(not (or found
|
||
;; Even if there's no uppercase char, we want to detect the use
|
||
;; of [:upper:] or [:lower:] char-class, which indicates
|
||
;; clearly that the user cares about case distinction.
|
||
(and regexp-flag (string-match "\\[:\\(upp\\|low\\)er:]" string)
|
||
(condition-case err
|
||
(progn
|
||
(string-match (substring string 0 (match-beginning 0))
|
||
"")
|
||
nil)
|
||
(invalid-regexp
|
||
(equal "Unmatched [ or [^" (cadr err)))))))))
|
||
|
||
;; Portability functions to support various Emacs versions.
|
||
|
||
(defun isearch-text-char-description (c)
|
||
(cond
|
||
((< c ?\s) (propertize
|
||
(char-to-string c)
|
||
'display (propertize (format "^%c" (+ c 64)) 'face 'escape-glyph)))
|
||
((= c ?\^?) (propertize
|
||
(char-to-string c)
|
||
'display (propertize "^?" 'face 'escape-glyph)))
|
||
(t (char-to-string c))))
|
||
|
||
;; General function to unread characters or events.
|
||
;; Also insert them in a keyboard macro being defined.
|
||
(defun isearch-unread (&rest char-or-events)
|
||
(mapc 'store-kbd-macro-event char-or-events)
|
||
(setq unread-command-events
|
||
(append char-or-events unread-command-events)))
|
||
|
||
|
||
;; Highlighting
|
||
|
||
(defvar isearch-overlay nil)
|
||
|
||
(defun isearch-highlight (beg end)
|
||
(if search-highlight
|
||
(if isearch-overlay
|
||
;; Overlay already exists, just move it.
|
||
(move-overlay isearch-overlay beg end (current-buffer))
|
||
;; Overlay doesn't exist, create it.
|
||
(setq isearch-overlay (make-overlay beg end))
|
||
;; 1001 is higher than lazy's 1000 and ediff's 100+
|
||
(overlay-put isearch-overlay 'priority 1001)
|
||
(overlay-put isearch-overlay 'face isearch-face))))
|
||
|
||
(defun isearch-dehighlight ()
|
||
(when isearch-overlay
|
||
(delete-overlay isearch-overlay)))
|
||
|
||
;; isearch-lazy-highlight feature
|
||
;; by Bob Glickstein <http://www.zanshin.com/~bobg/>
|
||
|
||
;; When active, *every* match for the current search string is
|
||
;; highlighted: the current one using the normal isearch match color
|
||
;; and all the others using `isearch-lazy-highlight'. The extra
|
||
;; highlighting makes it easier to anticipate where the cursor will
|
||
;; land each time you press C-s or C-r to repeat a pending search.
|
||
;; Highlighting of these additional matches happens in a deferred
|
||
;; fashion using "idle timers," so the cycles needed do not rob
|
||
;; isearch of its usual snappy response.
|
||
|
||
;; IMPLEMENTATION NOTE: This depends on some isearch internals.
|
||
;; Specifically:
|
||
;; - `isearch-update' is expected to be called (at least) every time
|
||
;; the search string or window-start changes;
|
||
;; - `isearch-string' is expected to contain the current search
|
||
;; string as entered by the user;
|
||
;; - the type of the current search is expected to be given by
|
||
;; `isearch-regexp-function' and `isearch-regexp';
|
||
;; - the direction of the current search is expected to be given by
|
||
;; `isearch-forward';
|
||
;; - the variable `isearch-error' is expected to be true
|
||
;; only if `isearch-string' is an invalid regexp.
|
||
|
||
(defvar isearch-lazy-highlight-overlays nil)
|
||
(defvar isearch-lazy-highlight-wrapped nil)
|
||
(defvar isearch-lazy-highlight-start-limit nil)
|
||
(defvar isearch-lazy-highlight-end-limit nil)
|
||
(defvar isearch-lazy-highlight-start nil)
|
||
(defvar isearch-lazy-highlight-end nil)
|
||
(defvar isearch-lazy-highlight-timer nil)
|
||
(defvar isearch-lazy-highlight-last-string nil)
|
||
(defvar isearch-lazy-highlight-window nil)
|
||
(defvar isearch-lazy-highlight-window-group nil)
|
||
(defvar isearch-lazy-highlight-window-start nil)
|
||
(defvar isearch-lazy-highlight-window-end nil)
|
||
(defvar isearch-lazy-highlight-case-fold-search nil)
|
||
(defvar isearch-lazy-highlight-regexp nil)
|
||
(defvar isearch-lazy-highlight-lax-whitespace nil)
|
||
(defvar isearch-lazy-highlight-regexp-lax-whitespace nil)
|
||
(defvar isearch-lazy-highlight-regexp-function nil)
|
||
(define-obsolete-variable-alias 'isearch-lazy-highlight-word
|
||
'isearch-lazy-highlight-regexp-function "25.1")
|
||
(defvar isearch-lazy-highlight-forward nil)
|
||
(defvar isearch-lazy-highlight-error nil)
|
||
|
||
(defun lazy-highlight-cleanup (&optional force procrastinate)
|
||
"Stop lazy highlighting and remove extra highlighting from current buffer.
|
||
FORCE non-nil means do it whether or not `lazy-highlight-cleanup' is nil.
|
||
PROCRASTINATE non-nil means postpone cleanup to a later time.
|
||
This function is called when exiting an incremental search if
|
||
`lazy-highlight-cleanup' is non-nil."
|
||
(interactive '(t))
|
||
(when (and (or force lazy-highlight-cleanup) (not procrastinate))
|
||
(while isearch-lazy-highlight-overlays
|
||
(delete-overlay (car isearch-lazy-highlight-overlays))
|
||
(setq isearch-lazy-highlight-overlays
|
||
(cdr isearch-lazy-highlight-overlays))))
|
||
(when isearch-lazy-highlight-timer
|
||
(cancel-timer isearch-lazy-highlight-timer)
|
||
(setq isearch-lazy-highlight-timer nil)))
|
||
|
||
(define-obsolete-function-alias 'isearch-lazy-highlight-cleanup
|
||
'lazy-highlight-cleanup
|
||
"22.1")
|
||
|
||
(defun isearch-lazy-highlight-new-loop (&optional beg end)
|
||
"Cleanup any previous `lazy-highlight' loop and begin a new one.
|
||
BEG and END specify the bounds within which highlighting should occur.
|
||
This is called when `isearch-update' is invoked (which can cause the
|
||
search string to change or the window to scroll). It is also used
|
||
by other Emacs features."
|
||
(when (and (null executing-kbd-macro)
|
||
(sit-for 0) ;make sure (window-start) is credible
|
||
(or (not (equal isearch-string
|
||
isearch-lazy-highlight-last-string))
|
||
(not (memq (selected-window)
|
||
isearch-lazy-highlight-window-group))
|
||
(not (eq isearch-lazy-highlight-case-fold-search
|
||
isearch-case-fold-search))
|
||
(not (eq isearch-lazy-highlight-regexp
|
||
isearch-regexp))
|
||
(not (eq isearch-lazy-highlight-regexp-function
|
||
isearch-regexp-function))
|
||
(not (eq isearch-lazy-highlight-lax-whitespace
|
||
isearch-lax-whitespace))
|
||
(not (eq isearch-lazy-highlight-regexp-lax-whitespace
|
||
isearch-regexp-lax-whitespace))
|
||
(not (= (window-group-start)
|
||
isearch-lazy-highlight-window-start))
|
||
(not (= (window-group-end) ; Window may have been split/joined.
|
||
isearch-lazy-highlight-window-end))
|
||
(not (eq isearch-forward
|
||
isearch-lazy-highlight-forward))
|
||
;; In case we are recovering from an error.
|
||
(not (equal isearch-error
|
||
isearch-lazy-highlight-error))))
|
||
;; something important did indeed change
|
||
(lazy-highlight-cleanup t (not (equal isearch-string ""))) ;stop old timer
|
||
(setq isearch-lazy-highlight-error isearch-error)
|
||
;; It used to check for `(not isearch-error)' here, but actually
|
||
;; lazy-highlighting might find matches to highlight even when
|
||
;; `isearch-error' is non-nil. (Bug#9918)
|
||
(setq isearch-lazy-highlight-start-limit beg
|
||
isearch-lazy-highlight-end-limit end)
|
||
(setq isearch-lazy-highlight-window (selected-window)
|
||
isearch-lazy-highlight-window-group (selected-window-group)
|
||
isearch-lazy-highlight-window-start (window-group-start)
|
||
isearch-lazy-highlight-window-end (window-group-end)
|
||
;; Start lazy-highlighting at the beginning of the found
|
||
;; match (`isearch-other-end'). If no match, use point.
|
||
;; One of the next two variables (depending on search direction)
|
||
;; is used to define the starting position of lazy-highlighting
|
||
;; and also to remember the current position of point between
|
||
;; calls of `isearch-lazy-highlight-update', and another variable
|
||
;; is used to define where the wrapped search must stop.
|
||
isearch-lazy-highlight-start (or isearch-other-end (point))
|
||
isearch-lazy-highlight-end (or isearch-other-end (point))
|
||
isearch-lazy-highlight-wrapped nil
|
||
isearch-lazy-highlight-last-string isearch-string
|
||
isearch-lazy-highlight-case-fold-search isearch-case-fold-search
|
||
isearch-lazy-highlight-regexp isearch-regexp
|
||
isearch-lazy-highlight-lax-whitespace isearch-lax-whitespace
|
||
isearch-lazy-highlight-regexp-lax-whitespace isearch-regexp-lax-whitespace
|
||
isearch-lazy-highlight-regexp-function isearch-regexp-function
|
||
isearch-lazy-highlight-forward isearch-forward)
|
||
(unless (equal isearch-string "")
|
||
(setq isearch-lazy-highlight-timer
|
||
(run-with-idle-timer lazy-highlight-initial-delay nil
|
||
'isearch-lazy-highlight-start)))))
|
||
|
||
(defun isearch-lazy-highlight-search ()
|
||
"Search ahead for the next or previous match, for lazy highlighting.
|
||
Attempt to do the search exactly the way the pending Isearch would."
|
||
(condition-case nil
|
||
(let ((case-fold-search isearch-lazy-highlight-case-fold-search)
|
||
(isearch-regexp isearch-lazy-highlight-regexp)
|
||
(isearch-regexp-function isearch-lazy-highlight-regexp-function)
|
||
(isearch-lax-whitespace
|
||
isearch-lazy-highlight-lax-whitespace)
|
||
(isearch-regexp-lax-whitespace
|
||
isearch-lazy-highlight-regexp-lax-whitespace)
|
||
(isearch-forward isearch-lazy-highlight-forward)
|
||
(search-invisible nil) ; don't match invisible text
|
||
(retry t)
|
||
(success nil)
|
||
(bound (if isearch-lazy-highlight-forward
|
||
(min (or isearch-lazy-highlight-end-limit (point-max))
|
||
(if isearch-lazy-highlight-wrapped
|
||
(+ isearch-lazy-highlight-start
|
||
;; Extend bound to match whole string at point
|
||
(1- (length isearch-lazy-highlight-last-string)))
|
||
(window-group-end)))
|
||
(max (or isearch-lazy-highlight-start-limit (point-min))
|
||
(if isearch-lazy-highlight-wrapped
|
||
(- isearch-lazy-highlight-end
|
||
;; Extend bound to match whole string at point
|
||
(1- (length isearch-lazy-highlight-last-string)))
|
||
(window-group-start))))))
|
||
;; Use a loop like in `isearch-search'.
|
||
(while retry
|
||
(setq success (isearch-search-string
|
||
isearch-lazy-highlight-last-string bound t))
|
||
;; Clear RETRY unless the search predicate says
|
||
;; to skip this search hit.
|
||
(if (or (not success)
|
||
(= (point) bound) ; like (bobp) (eobp) in `isearch-search'.
|
||
(= (match-beginning 0) (match-end 0))
|
||
(funcall isearch-filter-predicate
|
||
(match-beginning 0) (match-end 0)))
|
||
(setq retry nil)))
|
||
success)
|
||
(error nil)))
|
||
|
||
(defun isearch-lazy-highlight-start ()
|
||
"Start a new lazy-highlight updating loop."
|
||
(lazy-highlight-cleanup t) ;remove old overlays
|
||
(isearch-lazy-highlight-update))
|
||
|
||
(defun isearch-lazy-highlight-update ()
|
||
"Update highlighting of other matches for current search."
|
||
(let ((max lazy-highlight-max-at-a-time)
|
||
(looping t)
|
||
nomore)
|
||
(with-local-quit
|
||
(save-selected-window
|
||
(if (and (window-live-p isearch-lazy-highlight-window)
|
||
(not (memq (selected-window) isearch-lazy-highlight-window-group)))
|
||
(select-window isearch-lazy-highlight-window))
|
||
(save-excursion
|
||
(save-match-data
|
||
(goto-char (if isearch-lazy-highlight-forward
|
||
isearch-lazy-highlight-end
|
||
isearch-lazy-highlight-start))
|
||
(while looping
|
||
(let ((found (isearch-lazy-highlight-search)))
|
||
(when max
|
||
(setq max (1- max))
|
||
(if (<= max 0)
|
||
(setq looping nil)))
|
||
(if found
|
||
(let ((mb (match-beginning 0))
|
||
(me (match-end 0)))
|
||
(if (= mb me) ;zero-length match
|
||
(if isearch-lazy-highlight-forward
|
||
(if (= mb (if isearch-lazy-highlight-wrapped
|
||
isearch-lazy-highlight-start
|
||
(window-group-end)))
|
||
(setq found nil)
|
||
(forward-char 1))
|
||
(if (= mb (if isearch-lazy-highlight-wrapped
|
||
isearch-lazy-highlight-end
|
||
(window-group-start)))
|
||
(setq found nil)
|
||
(forward-char -1)))
|
||
|
||
;; non-zero-length match
|
||
(let ((ov (make-overlay mb me)))
|
||
(push ov isearch-lazy-highlight-overlays)
|
||
;; 1000 is higher than ediff's 100+,
|
||
;; but lower than isearch main overlay's 1001
|
||
(overlay-put ov 'priority 1000)
|
||
(overlay-put ov 'face 'lazy-highlight)
|
||
(unless (eq isearch-lazy-highlight 'all-windows)
|
||
(overlay-put ov 'window (selected-window)))))
|
||
;; Remember the current position of point for
|
||
;; the next call of `isearch-lazy-highlight-update'
|
||
;; when `lazy-highlight-max-at-a-time' is too small.
|
||
(if isearch-lazy-highlight-forward
|
||
(setq isearch-lazy-highlight-end (point))
|
||
(setq isearch-lazy-highlight-start (point)))))
|
||
|
||
;; not found or zero-length match at the search bound
|
||
(if (not found)
|
||
(if isearch-lazy-highlight-wrapped
|
||
(setq looping nil
|
||
nomore t)
|
||
(setq isearch-lazy-highlight-wrapped t)
|
||
(if isearch-lazy-highlight-forward
|
||
(progn
|
||
(setq isearch-lazy-highlight-end (window-group-start))
|
||
(goto-char (max (or isearch-lazy-highlight-start-limit (point-min))
|
||
(window-group-start))))
|
||
(setq isearch-lazy-highlight-start (window-group-end))
|
||
(goto-char (min (or isearch-lazy-highlight-end-limit (point-max))
|
||
(window-group-end))))))))
|
||
(unless nomore
|
||
(setq isearch-lazy-highlight-timer
|
||
(run-at-time lazy-highlight-interval nil
|
||
'isearch-lazy-highlight-update)))))))))
|
||
|
||
(defun isearch-resume (string regexp word forward message case-fold)
|
||
"Resume an incremental search.
|
||
STRING is the string or regexp searched for.
|
||
REGEXP non-nil means the resumed search was a regexp search.
|
||
WORD non-nil means resume a word search.
|
||
FORWARD non-nil means resume a forward search.
|
||
MESSAGE is the echo-area message recorded for the search resumed.
|
||
CASE-FOLD non-nil means the search was case-insensitive."
|
||
(isearch-mode forward regexp nil nil word)
|
||
(setq isearch-string string
|
||
isearch-message message
|
||
isearch-case-fold-search case-fold)
|
||
(isearch-search)
|
||
(isearch-update))
|
||
|
||
(provide 'isearch)
|
||
|
||
;;; isearch.el ends here
|