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581 lines
21 KiB
EmacsLisp
581 lines
21 KiB
EmacsLisp
;; autoload.el --- maintain autoloads in loaddefs.el
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;; Copyright (C) 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2001, 2002, 2003,
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;; 2004, 2005 Free Software Foundation, Inc.
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;; Author: Roland McGrath <roland@gnu.org>
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;; Keywords: maint
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2, or (at your option)
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;; any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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;; Boston, MA 02110-1301, USA.
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;;; Commentary:
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;; This code helps GNU Emacs maintainers keep the loaddefs.el file up to
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;; date. It interprets magic cookies of the form ";;;###autoload" in
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;; lisp source files in various useful ways. To learn more, read the
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;; source; if you're going to use this, you'd better be able to.
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;;; Code:
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(require 'lisp-mode) ;for `doc-string-elt' properties.
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(require 'help-fns) ;for help-add-fundoc-usage.
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(eval-when-compile (require 'cl))
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(defvar generated-autoload-file "loaddefs.el"
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"*File \\[update-file-autoloads] puts autoloads into.
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A `.el' file can set this in its local variables section to make its
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autoloads go somewhere else. The autoload file is assumed to contain a
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trailer starting with a FormFeed character.")
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(defconst generate-autoload-cookie ";;;###autoload"
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"Magic comment indicating the following form should be autoloaded.
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Used by \\[update-file-autoloads]. This string should be
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meaningless to Lisp (e.g., a comment).
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This string is used:
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;;;###autoload
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\(defun function-to-be-autoloaded () ...)
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If this string appears alone on a line, the following form will be
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read and an autoload made for it. If there is further text on the line,
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that text will be copied verbatim to `generated-autoload-file'.")
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(defconst generate-autoload-section-header "\f\n;;;### "
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"String that marks the form at the start of a new file's autoload section.")
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(defconst generate-autoload-section-trailer "\n;;;***\n"
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"String which indicates the end of the section of autoloads for a file.")
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(defconst generate-autoload-section-continuation ";;;;;; "
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"String to add on each continuation of the section header form.")
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(defun make-autoload (form file)
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"Turn FORM into an autoload or defvar for source file FILE.
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Returns nil if FORM is not a special autoload form (i.e. a function definition
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or macro definition or a defcustom)."
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(let ((car (car-safe form)) expand)
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(cond
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;; For complex cases, try again on the macro-expansion.
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((and (memq car '(easy-mmode-define-global-mode define-global-minor-mode
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easy-mmode-define-minor-mode define-minor-mode))
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(setq expand (let ((load-file-name file)) (macroexpand form)))
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(eq (car expand) 'progn)
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(memq :autoload-end expand))
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(let ((end (memq :autoload-end expand)))
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;; Cut-off anything after the :autoload-end marker.
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(setcdr end nil)
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(cons 'progn
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(mapcar (lambda (form) (make-autoload form file))
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(cdr expand)))))
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;; For special function-like operators, use the `autoload' function.
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((memq car '(defun define-skeleton defmacro define-derived-mode
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define-compilation-mode
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define-generic-mode easy-mmode-define-minor-mode
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easy-mmode-define-global-mode
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define-minor-mode defun* defmacro*))
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(let* ((macrop (memq car '(defmacro defmacro*)))
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(name (nth 1 form))
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(args (case car
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((defun defmacro defun* defmacro*) (nth 2 form))
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((define-skeleton) '(&optional str arg))
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((define-generic-mode define-derived-mode
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define-compilation-mode) nil)
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(t)))
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(body (nthcdr (get car 'doc-string-elt) form))
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(doc (if (stringp (car body)) (pop body))))
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(when (listp args)
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;; Add the usage form at the end where describe-function-1
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;; can recover it.
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(setq doc (help-add-fundoc-usage doc args)))
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;; `define-generic-mode' quotes the name, so take care of that
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(list 'autoload (if (listp name) name (list 'quote name)) file doc
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(or (and (memq car '(define-skeleton define-derived-mode
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define-generic-mode
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easy-mmode-define-global-mode
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easy-mmode-define-minor-mode
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define-minor-mode)) t)
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(eq (car-safe (car body)) 'interactive))
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(if macrop (list 'quote 'macro) nil))))
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;; Convert defcustom to less space-consuming data.
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((eq car 'defcustom)
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(let ((varname (car-safe (cdr-safe form)))
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(init (car-safe (cdr-safe (cdr-safe form))))
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(doc (car-safe (cdr-safe (cdr-safe (cdr-safe form)))))
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;; (rest (cdr-safe (cdr-safe (cdr-safe (cdr-safe form)))))
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)
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`(progn
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(defvar ,varname ,init ,doc)
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(custom-autoload ',varname ,file)
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;; The use of :require in a defcustom can be annoying, especially
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;; when defcustoms are moved from one file to another between
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;; releases because the :require arg gets placed in the user's
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;; .emacs. In order for autoloaded minor modes not to need the
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;; use of :require, we arrange to store their :setter.
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,(let ((setter (condition-case nil
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(cadr (memq :set form))
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(error nil))))
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(if (equal setter ''custom-set-minor-mode)
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`(put ',varname 'custom-set 'custom-set-minor-mode))))))
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;; nil here indicates that this is not a special autoload form.
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(t nil))))
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;; Forms which have doc-strings which should be printed specially.
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;; A doc-string-elt property of ELT says that (nth ELT FORM) is
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;; the doc-string in FORM.
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;; Those properties are now set in lisp-mode.el.
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(defun autoload-trim-file-name (file)
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;; Returns a relative file path for FILE
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;; starting from the directory that loaddefs.el is in.
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;; That is normally a directory in load-path,
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;; which means Emacs will be able to find FILE when it looks.
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;; Any extra directory names here would prevent finding the file.
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(setq file (expand-file-name file))
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(file-relative-name file
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(file-name-directory generated-autoload-file)))
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(defun autoload-read-section-header ()
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"Read a section header form.
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Since continuation lines have been marked as comments,
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we must copy the text of the form and remove those comment
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markers before we call `read'."
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(save-match-data
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(let ((beginning (point))
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string)
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(forward-line 1)
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(while (looking-at generate-autoload-section-continuation)
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(forward-line 1))
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(setq string (buffer-substring beginning (point)))
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(with-current-buffer (get-buffer-create " *autoload*")
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(erase-buffer)
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(insert string)
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(goto-char (point-min))
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(while (search-forward generate-autoload-section-continuation nil t)
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(replace-match " "))
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(goto-char (point-min))
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(read (current-buffer))))))
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(defvar autoload-print-form-outbuf)
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(defun autoload-print-form (form)
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"Print FORM such that `make-docfile' will find the docstrings.
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The variable `autoload-print-form-outbuf' specifies the buffer to
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put the output in."
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(cond
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;; If the form is a sequence, recurse.
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((eq (car form) 'progn) (mapcar 'autoload-print-form (cdr form)))
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;; Symbols at the toplevel are meaningless.
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((symbolp form) nil)
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(t
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(let ((doc-string-elt (get (car-safe form) 'doc-string-elt))
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(outbuf autoload-print-form-outbuf))
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(if (and doc-string-elt (stringp (nth doc-string-elt form)))
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;; We need to hack the printing because the
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;; doc-string must be printed specially for
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;; make-docfile (sigh).
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(let* ((p (nthcdr (1- doc-string-elt) form))
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(elt (cdr p)))
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(setcdr p nil)
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(princ "\n(" outbuf)
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(let ((print-escape-newlines t)
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(print-escape-nonascii t))
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(dolist (elt form)
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(prin1 elt outbuf)
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(princ " " outbuf)))
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(princ "\"\\\n" outbuf)
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(let ((begin (with-current-buffer outbuf (point))))
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(princ (substring (prin1-to-string (car elt)) 1)
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outbuf)
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;; Insert a backslash before each ( that
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;; appears at the beginning of a line in
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;; the doc string.
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(with-current-buffer outbuf
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(save-excursion
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(while (re-search-backward "\n[[(]" begin t)
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(forward-char 1)
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(insert "\\"))))
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(if (null (cdr elt))
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(princ ")" outbuf)
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(princ " " outbuf)
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(princ (substring (prin1-to-string (cdr elt)) 1)
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outbuf))
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(terpri outbuf)))
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(let ((print-escape-newlines t)
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(print-escape-nonascii t))
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(print form outbuf)))))))
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(defun autoload-ensure-default-file (file)
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"Make sure that the autoload file FILE exists and if not create it."
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(unless (file-exists-p file)
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(write-region
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(concat ";;; " (file-name-nondirectory file)
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" --- automatically extracted autoloads\n"
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";;\n"
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";;; Code:\n\n"
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" \n;; Local Variables:\n"
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";; version-control: never\n"
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";; no-byte-compile: t\n"
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";; no-update-autoloads: t\n"
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";; End:\n"
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";;; " (file-name-nondirectory file)
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" ends here\n")
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nil file))
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file)
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(defun autoload-insert-section-header (outbuf autoloads load-name file time)
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"Insert the section-header line,
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which lists the file name and which functions are in it, etc."
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(insert generate-autoload-section-header)
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(prin1 (list 'autoloads autoloads load-name
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(if (stringp file) (autoload-trim-file-name file) file)
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time)
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outbuf)
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(terpri outbuf)
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;; Break that line at spaces, to avoid very long lines.
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;; Make each sub-line into a comment.
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(with-current-buffer outbuf
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(save-excursion
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(forward-line -1)
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(while (not (eolp))
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(move-to-column 64)
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(skip-chars-forward "^ \n")
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(or (eolp)
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(insert "\n" generate-autoload-section-continuation))))))
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(defun generate-file-autoloads (file)
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"Insert at point a loaddefs autoload section for FILE.
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autoloads are generated for defuns and defmacros in FILE
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marked by `generate-autoload-cookie' (which see).
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If FILE is being visited in a buffer, the contents of the buffer
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are used."
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(interactive "fGenerate autoloads for file: ")
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(let ((outbuf (current-buffer))
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(autoloads-done '())
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(load-name (let ((name (file-name-nondirectory file)))
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(if (string-match "\\.elc?\\(\\.\\|$\\)" name)
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(substring name 0 (match-beginning 0))
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name)))
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(print-length nil)
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(print-readably t) ; This does something in Lucid Emacs.
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(float-output-format nil)
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(done-any nil)
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(visited (get-file-buffer file))
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output-end)
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;; If the autoload section we create here uses an absolute
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;; file name for FILE in its header, and then Emacs is installed
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;; under a different path on another system,
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;; `update-autoloads-here' won't be able to find the files to be
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;; autoloaded. So, if FILE is in the same directory or a
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;; subdirectory of the current buffer's directory, we'll make it
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;; relative to the current buffer's directory.
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(setq file (expand-file-name file))
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(let* ((source-truename (file-truename file))
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(dir-truename (file-name-as-directory
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(file-truename default-directory)))
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(len (length dir-truename)))
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(if (and (< len (length source-truename))
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(string= dir-truename (substring source-truename 0 len)))
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(setq file (substring source-truename len))))
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(message "Generating autoloads for %s..." file)
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(save-excursion
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(unwind-protect
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(progn
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(if visited
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(set-buffer visited)
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;; It is faster to avoid visiting the file.
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(set-buffer (get-buffer-create " *generate-autoload-file*"))
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(kill-all-local-variables)
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(erase-buffer)
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(setq buffer-undo-list t
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buffer-read-only nil)
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(emacs-lisp-mode)
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(insert-file-contents file nil))
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(save-excursion
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(save-restriction
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(widen)
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(goto-char (point-min))
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(while (not (eobp))
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(skip-chars-forward " \t\n\f")
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(cond
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((looking-at (regexp-quote generate-autoload-cookie))
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(search-forward generate-autoload-cookie)
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(skip-chars-forward " \t")
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(setq done-any t)
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(if (eolp)
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;; Read the next form and make an autoload.
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(let* ((form (prog1 (read (current-buffer))
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(or (bolp) (forward-line 1))))
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(autoload (make-autoload form load-name)))
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(if autoload
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(setq autoloads-done (cons (nth 1 form)
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autoloads-done))
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(setq autoload form))
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(let ((autoload-print-form-outbuf outbuf))
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(autoload-print-form autoload)))
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;; Copy the rest of the line to the output.
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(princ (buffer-substring
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(progn
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;; Back up over whitespace, to preserve it.
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(skip-chars-backward " \f\t")
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(if (= (char-after (1+ (point))) ? )
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;; Eat one space.
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(forward-char 1))
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(point))
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(progn (forward-line 1) (point)))
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outbuf)))
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((looking-at ";")
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;; Don't read the comment.
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(forward-line 1))
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(t
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(forward-sexp 1)
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(forward-line 1)))))))
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(or visited
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;; We created this buffer, so we should kill it.
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(kill-buffer (current-buffer)))
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(set-buffer outbuf)
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(setq output-end (point-marker))))
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(if done-any
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(progn
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;; Insert the section-header line
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;; which lists the file name and which functions are in it, etc.
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(autoload-insert-section-header outbuf autoloads-done load-name file
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(nth 5 (file-attributes file)))
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(insert ";;; Generated autoloads from "
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(autoload-trim-file-name file) "\n")
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(goto-char output-end)
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(insert generate-autoload-section-trailer)))
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(message "Generating autoloads for %s...done" file)))
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;;;###autoload
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(defun update-file-autoloads (file &optional save-after)
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"Update the autoloads for FILE in `generated-autoload-file'
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\(which FILE might bind in its local variables).
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If SAVE-AFTER is non-nil (which is always, when called interactively),
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save the buffer too.
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Return FILE if there was no autoload cookie in it, else nil."
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(interactive "fUpdate autoloads for file: \np")
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(let ((load-name (let ((name (file-name-nondirectory file)))
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(if (string-match "\\.elc?\\(\\.\\|$\\)" name)
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(substring name 0 (match-beginning 0))
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name)))
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(found nil)
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(existing-buffer (get-file-buffer file))
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(no-autoloads nil))
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(save-excursion
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;; We want to get a value for generated-autoload-file from
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;; the local variables section if it's there.
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(if existing-buffer
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(set-buffer existing-buffer))
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;; We must read/write the file without any code conversion,
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;; but still decode EOLs.
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(let ((coding-system-for-read 'raw-text))
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(set-buffer (find-file-noselect
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(autoload-ensure-default-file
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(expand-file-name generated-autoload-file
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(expand-file-name "lisp"
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source-directory)))))
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;; This is to make generated-autoload-file have Unix EOLs, so
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;; that it is portable to all platforms.
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(setq buffer-file-coding-system 'raw-text-unix))
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(or (> (buffer-size) 0)
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(error "Autoloads file %s does not exist" buffer-file-name))
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(or (file-writable-p buffer-file-name)
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(error "Autoloads file %s is not writable" buffer-file-name))
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(save-excursion
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(save-restriction
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(widen)
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(goto-char (point-min))
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;; Look for the section for LOAD-NAME.
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(while (and (not found)
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(search-forward generate-autoload-section-header nil t))
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(let ((form (autoload-read-section-header)))
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(cond ((string= (nth 2 form) load-name)
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;; We found the section for this file.
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;; Check if it is up to date.
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(let ((begin (match-beginning 0))
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(last-time (nth 4 form))
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(file-time (nth 5 (file-attributes file))))
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(if (and (or (null existing-buffer)
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(not (buffer-modified-p existing-buffer)))
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(listp last-time) (= (length last-time) 2)
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(not (time-less-p last-time file-time)))
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(progn
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(if (interactive-p)
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(message "\
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Autoload section for %s is up to date."
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file))
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(setq found 'up-to-date))
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(search-forward generate-autoload-section-trailer)
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(delete-region begin (point))
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(setq found t))))
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((string< load-name (nth 2 form))
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;; We've come to a section alphabetically later than
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;; LOAD-NAME. We assume the file is in order and so
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;; there must be no section for LOAD-NAME. We will
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||
;; insert one before the section here.
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(goto-char (match-beginning 0))
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(setq found 'new)))))
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(or found
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(progn
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(setq found 'new)
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||
;; No later sections in the file. Put before the last page.
|
||
(goto-char (point-max))
|
||
(search-backward "\f" nil t)))
|
||
(or (eq found 'up-to-date)
|
||
(and (eq found 'new)
|
||
;; Check that FILE has any cookies before generating a
|
||
;; new section for it.
|
||
(save-excursion
|
||
(if existing-buffer
|
||
(set-buffer existing-buffer)
|
||
;; It is faster to avoid visiting the file.
|
||
(set-buffer (get-buffer-create " *autoload-file*"))
|
||
(kill-all-local-variables)
|
||
(erase-buffer)
|
||
(setq buffer-undo-list t
|
||
buffer-read-only nil)
|
||
(emacs-lisp-mode)
|
||
(insert-file-contents file nil))
|
||
(save-excursion
|
||
(save-restriction
|
||
(widen)
|
||
(goto-char (point-min))
|
||
(prog1
|
||
(if (re-search-forward
|
||
(concat "^" (regexp-quote
|
||
generate-autoload-cookie))
|
||
nil t)
|
||
nil
|
||
(if (interactive-p)
|
||
(message "%s has no autoloads" file))
|
||
(setq no-autoloads t)
|
||
t)
|
||
(or existing-buffer
|
||
(kill-buffer (current-buffer))))))))
|
||
(generate-file-autoloads file))))
|
||
(and save-after
|
||
(buffer-modified-p)
|
||
(save-buffer))
|
||
|
||
(if no-autoloads file))))
|
||
|
||
(defun autoload-remove-section (begin)
|
||
(goto-char begin)
|
||
(search-forward generate-autoload-section-trailer)
|
||
(delete-region begin (point)))
|
||
|
||
;;;###autoload
|
||
(defun update-directory-autoloads (&rest dirs)
|
||
"\
|
||
Update loaddefs.el with all the current autoloads from DIRS, and no old ones.
|
||
This uses `update-file-autoloads' (which see) do its work.
|
||
In an interactive call, you must give one argument, the name
|
||
of a single directory. In a call from Lisp, you can supply multiple
|
||
directories as separate arguments, but this usage is discouraged.
|
||
|
||
The function does NOT recursively descend into subdirectories of the
|
||
directory or directories specified."
|
||
(interactive "DUpdate autoloads from directory: ")
|
||
(let* ((files-re (let ((tmp nil))
|
||
(dolist (suf load-suffixes
|
||
(concat "^[^=.].*" (regexp-opt tmp t) "\\'"))
|
||
(unless (string-match "\\.elc" suf) (push suf tmp)))))
|
||
(files (apply 'nconc
|
||
(mapcar (lambda (dir)
|
||
(directory-files (expand-file-name dir)
|
||
t files-re))
|
||
dirs)))
|
||
(this-time (current-time))
|
||
(no-autoloads nil) ;files with no autoload cookies.
|
||
(autoloads-file
|
||
(expand-file-name generated-autoload-file
|
||
(expand-file-name "lisp" source-directory)))
|
||
(top-dir (file-name-directory autoloads-file)))
|
||
|
||
(with-current-buffer
|
||
(find-file-noselect (autoload-ensure-default-file autoloads-file))
|
||
(save-excursion
|
||
|
||
;; Canonicalize file names and remove the autoload file itself.
|
||
(setq files (delete (autoload-trim-file-name buffer-file-name)
|
||
(mapcar 'autoload-trim-file-name files)))
|
||
|
||
(goto-char (point-min))
|
||
(while (search-forward generate-autoload-section-header nil t)
|
||
(let* ((form (autoload-read-section-header))
|
||
(file (nth 3 form)))
|
||
(cond ((and (consp file) (stringp (car file)))
|
||
;; This is a list of files that have no autoload cookies.
|
||
;; There shouldn't be more than one such entry.
|
||
;; Remove the obsolete section.
|
||
(autoload-remove-section (match-beginning 0))
|
||
(let ((last-time (nth 4 form)))
|
||
(dolist (file file)
|
||
(let ((file-time (nth 5 (file-attributes file))))
|
||
(when (and file-time
|
||
(not (time-less-p last-time file-time)))
|
||
;; file unchanged
|
||
(push file no-autoloads)
|
||
(setq files (delete file files)))))))
|
||
((not (stringp file)))
|
||
((not (file-exists-p (expand-file-name file top-dir)))
|
||
;; Remove the obsolete section.
|
||
(autoload-remove-section (match-beginning 0)))
|
||
((equal (nth 4 form) (nth 5 (file-attributes file)))
|
||
;; File hasn't changed.
|
||
nil)
|
||
(t
|
||
(update-file-autoloads file)))
|
||
(setq files (delete file files)))))
|
||
;; Elements remaining in FILES have no existing autoload sections yet.
|
||
(setq no-autoloads
|
||
(append no-autoloads
|
||
(delq nil (mapcar 'update-file-autoloads files))))
|
||
(when no-autoloads
|
||
;; Sort them for better readability.
|
||
(setq no-autoloads (sort no-autoloads 'string<))
|
||
;; Add the `no-autoloads' section.
|
||
(goto-char (point-max))
|
||
(search-backward "\f" nil t)
|
||
(autoload-insert-section-header
|
||
(current-buffer) nil nil no-autoloads this-time)
|
||
(insert generate-autoload-section-trailer))
|
||
|
||
(save-buffer))))
|
||
|
||
;;;###autoload
|
||
(defun batch-update-autoloads ()
|
||
"Update loaddefs.el autoloads in batch mode.
|
||
Calls `update-directory-autoloads' on the command line arguments."
|
||
(apply 'update-directory-autoloads command-line-args-left)
|
||
(setq command-line-args-left nil))
|
||
|
||
(provide 'autoload)
|
||
|
||
;; arch-tag: 00244766-98f4-4767-bf42-8a22103441c6
|
||
;;; autoload.el ends here
|