;; Copyright (C) 1985-1987, 1992, 1994, 1996-1997, 2000-2014 Free
;; Software Foundation, Inc.
-;; Maintainer: FSF
+;; Maintainer: emacs-devel@gnu.org
;; Package: emacs
;; This file is part of GNU Emacs.
Non-interactively, TO-STRINGS may be a list of replacement strings.
+Interactively, reads the regexp using `read-regexp'.
Use \\<minibuffer-local-map>\\[next-history-element] \
to pull the last incremental search regexp to the minibuffer
that reads REGEXP.
which will run faster and will not set the mark or print anything.
\(You may need a more complex loop if FROM-STRING can match the null string
and TO-STRING is also null.)"
+ (declare (interactive-only
+ "use `search-forward' and `replace-match' instead."))
(interactive
(let ((common
(query-replace-read-args
(region-end))
(nth 3 common))))
(perform-replace from-string to-string nil nil delimited nil nil start end backward))
-(put 'replace-string 'interactive-only
- "use `search-forward' and `replace-match' instead.")
(defun replace-regexp (regexp to-string &optional delimited start end backward)
"Replace things after point matching REGEXP with TO-STRING.
(while (re-search-forward REGEXP nil t)
(replace-match TO-STRING nil nil))
which will run faster and will not set the mark or print anything."
+ (declare (interactive-only
+ "use `re-search-forward' and `replace-match' instead."))
(interactive
(let ((common
(query-replace-read-args
(region-end))
(nth 3 common))))
(perform-replace regexp to-string nil t delimited nil nil start end backward))
-(put 'replace-regexp 'interactive-only
- "use `re-search-forward' and `replace-match' instead.")
\f
(defvar regexp-history nil
"History of regexp for occur's collect operation")
(defcustom read-regexp-defaults-function nil
- "Function that provides default regexp(s) for regexp reading commands.
-This function should take no arguments and return one of nil, a
-regexp or a list of regexps. The return value of this function is used
-as DEFAULTS param of `read-regexp'. This function is called only during
-interactive use.
+ "Function that provides default regexp(s) for `read-regexp'.
+This function should take no arguments and return one of: nil, a
+regexp, or a list of regexps. Interactively, `read-regexp' uses
+the return value of this function for its DEFAULT argument.
-If you need different defaults for different commands,
-use `this-command' to identify the command under execution.
+As an example, set this variable to `find-tag-default-as-regexp'
+to default to the symbol at point.
-You can customize `read-regexp-defaults-function' to the value
-`find-tag-default-as-regexp' to highlight a symbol at point."
+To provide different default regexps for different commands,
+the function that you set this to can check `this-command'."
:type '(choice
(const :tag "No default regexp reading function" nil)
(const :tag "Latest regexp history" regexp-history-last)
find-tag-default-as-regexp)
(function-item :tag "Tag at point as symbol regexp"
find-tag-default-as-symbol-regexp)
- (function :tag "Function to provide default for read-regexp"))
+ (function :tag "Your choice of function"))
:group 'matching
:version "24.4")
(defun read-regexp (prompt &optional defaults history)
"Read and return a regular expression as a string.
-When PROMPT doesn't end with a colon and space, it adds a final \": \".
-If the first element of DEFAULTS is non-nil, it's added to the prompt.
-
-Optional arg DEFAULTS has the form (DEFAULT . SUGGESTIONS)
-or simply DEFAULT where DEFAULT, if non-nil, should be a string that
-is returned as the default value when the user enters empty input.
-SUGGESTIONS is a list of strings that can be inserted into
-the minibuffer using \\<minibuffer-local-map>\\[next-history-element]. \
-The values supplied in SUGGESTIONS
-are prepended to the list of standard suggestions returned by
-`read-regexp-suggestions'. The default values can be customized
-by `read-regexp-defaults-function'.
-
-Optional arg HISTORY is a symbol to use for the history list.
-If HISTORY is nil, `regexp-history' is used."
+Prompt with the string PROMPT. If PROMPT ends in \":\" (followed by
+optional whitespace), use it as-is. Otherwise, add \": \" to the end,
+possibly preceded by the default result (see below).
+
+The optional argument DEFAULTS can be either: nil, a string, a list
+of strings, or a symbol. We use DEFAULTS to construct the default
+return value in case of empty input.
+
+If DEFAULTS is a string, we use it as-is.
+
+If DEFAULTS is a list of strings, the first element is the
+default return value, but all the elements are accessible
+using the history command \\<minibuffer-local-map>\\[next-history-element].
+
+If DEFAULTS is a non-nil symbol, then if `read-regexp-defaults-function'
+is non-nil, we use that in place of DEFAULTS in the following:
+ If DEFAULTS is the symbol `regexp-history-last', we use the first
+ element of HISTORY (if specified) or `regexp-history'.
+ If DEFAULTS is a function, we call it with no arguments and use
+ what it returns, which should be either nil, a string, or a list of strings.
+
+We append the standard values from `read-regexp-suggestions' to DEFAULTS
+before using it.
+
+If the first element of DEFAULTS is non-nil (and if PROMPT does not end
+in \":\", followed by optional whitespace), we add it to the prompt.
+
+The optional argument HISTORY is a symbol to use for the history list.
+If nil, uses `regexp-history'."
(let* ((defaults
(if (and defaults (symbolp defaults))
(cond
HCoop / bpt / emacs.git / blobdiff