annotate lisp/utils/eldoc.el @ 131:869e1851236b xemacs-20-1p4

Import from CVS: tag xemacs-20-1p4
author cvs
date Mon, 13 Aug 2007 09:29:07 +0200
parents 48d667d6f17f
children 34a5b81f86ba
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
98
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
1 ;;; eldoc.el --- show function arglist or variable docstring in echo area
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
2
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
3 ;; Copyright (C) 1996, 1997 Free Software Foundation, Inc.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
4
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
5 ;; Author: Noah Friedman <friedman@prep.ai.mit.edu>
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
6 ;; Maintainer: friedman@prep.ai.mit.edu
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
7 ;; Keywords: extensions
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
8 ;; Created: 1995-10-06
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
9
112
48d667d6f17f Import from CVS: tag r20-1b8
cvs
parents: 110
diff changeset
10 ;; $Id: eldoc.el,v 1.4 1997/03/18 03:27:00 steve Exp $
98
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
11
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
12 ;; This file is part of GNU Emacs.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
13
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
14 ;; GNU Emacs is free software; you can redistribute it and/or modify
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
15 ;; it under the terms of the GNU General Public License as published by
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
16 ;; the Free Software Foundation; either version 2, or (at your option)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
17 ;; any later version.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
18
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
19 ;; GNU Emacs is distributed in the hope that it will be useful,
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
20 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
21 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
22 ;; GNU General Public License for more details.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
23
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
24 ;; You should have received a copy of the GNU General Public License
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
25 ;; along with GNU Emacs; see the file COPYING. If not, write to the
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
26 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
27 ;; Boston, MA 02111-1307, USA.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
28
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
29 ;;; Commentary:
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
30
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
31 ;; This program was inspired by the behavior of the "mouse documentation
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
32 ;; window" on many Lisp Machine systems; as you type a function's symbol
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
33 ;; name as part of a sexp, it will print the argument list for that
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
34 ;; function. Behavior is not identical; for example, you need not actually
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
35 ;; type the function name, you need only move point around in a sexp that
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
36 ;; calls it. Also, if point is over a documented variable, it will print
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
37 ;; the one-line documentation for that variable instead, to remind you of
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
38 ;; that variable's meaning.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
39
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
40 ;; One useful way to enable this minor mode is to put the following in your
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
41 ;; .emacs:
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
42 ;;
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
43 ;; (autoload 'turn-on-eldoc-mode "eldoc" nil t)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
44 ;; (add-hook 'emacs-lisp-mode-hook 'turn-on-eldoc-mode)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
45 ;; (add-hook 'lisp-interaction-mode-hook 'turn-on-eldoc-mode)
100
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
46 ;; (add-hook 'ielm-mode-hook 'turn-on-eldoc-mode)
98
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
47
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
48 ;;; Code:
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
49
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
50 ;; Use idle timers if available in the version of emacs running.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
51 ;; Please don't change this to use `require'; this package works as-is in
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
52 ;; XEmacs (which doesn't have timer.el as of 19.14), and I would like to
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
53 ;; maintain compatibility with that since I must use it sometimes. --Noah
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
54 (or (featurep 'timer)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
55 (load "timer" t))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
56
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
57 ;;;###autoload
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
58 (defvar eldoc-mode nil
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
59 "*If non-nil, show the defined parameters for the elisp function near point.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
60
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
61 For the emacs lisp function at the beginning of the sexp which point is
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
62 within, show the defined parameters for the function in the echo area.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
63 This information is extracted directly from the function or macro if it is
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
64 in pure lisp. If the emacs function is a subr, the parameters are obtained
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
65 from the documentation string if possible.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
66
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
67 If point is over a documented variable, print that variable's docstring
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
68 instead.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
69
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
70 This variable is buffer-local.")
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
71 (make-variable-buffer-local 'eldoc-mode)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
72
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
73 (defconst eldoc-idle-delay 0.50
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
74 "*Number of seconds of idle time to wait before printing.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
75 If user input arrives before this interval of time has elapsed after the
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
76 last input, no documentation will be printed.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
77
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
78 If this variable is set to 0, no idle time is required.")
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
79
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
80 (defconst eldoc-minor-mode-string " ElDoc"
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
81 "*String to display in mode line when Eldoc Mode is enabled.")
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
82
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
83 ;; Put this minor mode on the global minor-mode-alist.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
84 (or (assq 'eldoc-mode (default-value 'minor-mode-alist))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
85 (setq-default minor-mode-alist
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
86 (append (default-value 'minor-mode-alist)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
87 '((eldoc-mode eldoc-minor-mode-string)))))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
88
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
89 (defconst eldoc-argument-case 'upcase
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
90 "Case to display argument names of functions, as a symbol.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
91 This has two preferred values: `upcase' or `downcase'.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
92 Actually, any name of a function which takes a string as an argument and
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
93 returns another string is acceptable.")
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
94
100
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
95 ;; No user options below here.
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
96
98
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
97 (defvar eldoc-message-commands nil
100
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
98 "Commands after which it is appropriate to print in the echo area.
98
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
99
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
100 Eldoc does not try to print function arglists, etc. after just any command,
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
101 because some commands print their own messages in the echo area and these
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
102 functions would instantly overwrite them. But self-insert-command as well
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
103 as most motion commands are good candidates.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
104
100
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
105 This variable contains an obarray of symbols; do not manipulate it
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
106 directly. Instead, use the functions `eldoc-add-command' and
98
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
107 `eldoc-remove-command'.")
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
108
100
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
109 ;; This is used by eldoc-add-command to initialize eldoc-message-commands
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
110 ;; as an obarray.
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
111 ;; If you increase the number of buckets, keep it a prime number.
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
112 (defconst eldoc-message-commands-table-size 31)
98
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
113
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
114 ;; Bookkeeping; the car contains the last symbol read from the buffer.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
115 ;; The cdr contains the string last displayed in the echo area, so it can
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
116 ;; be printed again if necessary without reconsing.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
117 (defvar eldoc-last-data '(nil . nil))
100
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
118 (defvar eldoc-last-message nil)
98
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
119
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
120 ;; Idle timers are supported in Emacs 19.31 and later.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
121 (defconst eldoc-use-idle-timer-p (fboundp 'run-with-idle-timer))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
122
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
123 ;; eldoc's timer object, if using idle timers
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
124 (defvar eldoc-timer nil)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
125
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
126 ;; idle time delay currently in use by timer.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
127 ;; This is used to determine if eldoc-idle-delay is changed by the user.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
128 (defvar eldoc-current-idle-delay eldoc-idle-delay)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
129
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
130
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
131 ;;;###autoload
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
132 (defun eldoc-mode (&optional prefix)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
133 "*Enable or disable eldoc mode.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
134 See documentation for the variable of the same name for more details.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
135
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
136 If called interactively with no prefix argument, toggle current condition
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
137 of the mode.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
138 If called with a positive or negative prefix argument, enable or disable
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
139 the mode, respectively."
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
140 (interactive "P")
100
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
141 (setq eldoc-last-message nil)
98
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
142 (cond (eldoc-use-idle-timer-p
100
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
143 (add-hook 'post-command-hook 'eldoc-schedule-timer)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
144 (add-hook 'pre-command-hook 'eldoc-pre-command-refresh-echo-area))
98
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
145 (t
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
146 ;; Use post-command-idle-hook if defined, otherwise use
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
147 ;; post-command-hook. The former is only proper to use in Emacs
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
148 ;; 19.30; that is the first version in which it appeared, but it
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
149 ;; was obsolesced by idle timers in Emacs 19.31.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
150 (add-hook (if (boundp 'post-command-idle-hook)
100
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
151 'post-command-idle-hook
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
152 'post-command-hook)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
153 'eldoc-print-current-symbol-info)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
154 ;; quick and dirty hack for seeing if this is XEmacs
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
155 (and (fboundp 'display-message)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
156 (add-hook 'pre-command-hook
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
157 'eldoc-pre-command-refresh-echo-area))))
98
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
158 (setq eldoc-mode (if prefix
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
159 (>= (prefix-numeric-value prefix) 0)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
160 (not eldoc-mode)))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
161 (and (interactive-p)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
162 (if eldoc-mode
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
163 (message "eldoc-mode is enabled")
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
164 (message "eldoc-mode is disabled")))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
165 eldoc-mode)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
166
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
167 ;;;###autoload
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
168 (defun turn-on-eldoc-mode ()
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
169 "Unequivocally turn on eldoc-mode (see variable documentation)."
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
170 (interactive)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
171 (eldoc-mode 1))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
172
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
173 ;; Idle timers are part of Emacs 19.31 and later.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
174 (defun eldoc-schedule-timer ()
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
175 (or (and eldoc-timer
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
176 (memq eldoc-timer timer-idle-list))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
177 (setq eldoc-timer
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
178 (run-with-idle-timer eldoc-idle-delay t
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
179 'eldoc-print-current-symbol-info)))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
180
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
181 ;; If user has changed the idle delay, update the timer.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
182 (cond ((not (= eldoc-idle-delay eldoc-current-idle-delay))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
183 (setq eldoc-current-idle-delay eldoc-idle-delay)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
184 (timer-set-idle-time eldoc-timer eldoc-idle-delay t))))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
185
100
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
186 ;; This function goes on pre-command-hook for XEmacs or when using idle
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
187 ;; timers in Emacs. Motion commands clear the echo area for some reason,
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
188 ;; which make eldoc messages flicker or disappear just before motion
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
189 ;; begins. This function reprints the last eldoc message immediately
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
190 ;; before the next command executes, which does away with the flicker.
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
191 ;; This doesn't seem to be required for Emacs 19.28 and earlier.
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
192 (defun eldoc-pre-command-refresh-echo-area ()
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
193 (and eldoc-last-message
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
194 (if (eldoc-display-message-no-interference-p)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
195 (eldoc-message eldoc-last-message)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
196 (setq eldoc-last-message nil))))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
197
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
198 (defun eldoc-message (&rest args)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
199 (let ((omessage eldoc-last-message))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
200 (cond ((eq (car args) eldoc-last-message))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
201 ((or (null args)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
202 (null (car args)))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
203 (setq eldoc-last-message nil))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
204 (t
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
205 (setq eldoc-last-message (apply 'format args))))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
206 ;; In emacs 19.29 and later, and XEmacs 19.13 and later, all messages
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
207 ;; are recorded in a log. Do not put eldoc messages in that log since
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
208 ;; they are Legion.
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
209 (if (fboundp 'display-message)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
210 ;; XEmacs 19.13 way of preventing log messages.
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
211 (if eldoc-last-message
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
212 (display-message 'no-log eldoc-last-message)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
213 (and omessage
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
214 (clear-message 'no-log)))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
215 (let ((message-log-max nil))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
216 (if eldoc-last-message
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
217 (message "%s" eldoc-last-message)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
218 (and omessage
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
219 (message nil))))))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
220 eldoc-last-message)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
221
98
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
222
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
223 (defun eldoc-print-current-symbol-info ()
100
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
224 (and (eldoc-display-message-p)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
225 (let ((current-symbol (eldoc-current-symbol))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
226 (current-fnsym (eldoc-fnsym-in-current-sexp)))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
227 (or (cond ((eq current-symbol current-fnsym)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
228 (or (eldoc-print-fnsym-args current-fnsym)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
229 (eldoc-print-var-docstring current-symbol)))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
230 (t
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
231 (or (eldoc-print-var-docstring current-symbol)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
232 (eldoc-print-fnsym-args current-fnsym))))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
233 (eldoc-message nil)))))
98
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
234
100
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
235 ;; Decide whether now is a good time to display a message.
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
236 (defun eldoc-display-message-p ()
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
237 (and (eldoc-display-message-no-interference-p)
98
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
238 (cond (eldoc-use-idle-timer-p
100
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
239 ;; If this-command is non-nil while running via an idle
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
240 ;; timer, we're still in the middle of executing a command,
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
241 ;; e.g. a query-replace where it would be annoying to
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
242 ;; overwrite the echo area.
112
48d667d6f17f Import from CVS: tag r20-1b8
cvs
parents: 110
diff changeset
243 (and (not this-command)
100
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
244 (symbolp last-command)
98
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
245 (intern-soft (symbol-name last-command)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
246 eldoc-message-commands)))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
247 (t
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
248 ;; If we don't have idle timers, this function is
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
249 ;; running on post-command-hook directly; that means the
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
250 ;; user's last command is still on `this-command', and we
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
251 ;; must wait briefly for input to see whether to do display.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
252 (and (symbolp this-command)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
253 (intern-soft (symbol-name this-command)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
254 eldoc-message-commands)
100
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
255 (sit-for eldoc-idle-delay))))))
98
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
256
100
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
257 (defun eldoc-display-message-no-interference-p ()
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
258 (and eldoc-mode
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
259 (not executing-kbd-macro)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
260 ;; Having this mode operate in an active minibuffer/echo area causes
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
261 ;; interference with what's going on there.
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
262 (not cursor-in-echo-area)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
263 (not (eq (selected-window) (minibuffer-window)))))
98
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
264
100
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
265 (defun eldoc-print-fnsym-args (sym)
98
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
266 (interactive)
100
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
267 (let ((args nil))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
268 (cond ((not (and sym
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
269 (symbolp sym)
98
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
270 (fboundp sym))))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
271 ((eq sym (car eldoc-last-data))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
272 (setq args (cdr eldoc-last-data)))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
273 ((subrp (eldoc-symbol-function sym))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
274 (setq args (or (eldoc-function-argstring-from-docstring sym)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
275 (eldoc-docstring-first-line (documentation sym t))))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
276 (setcar eldoc-last-data sym)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
277 (setcdr eldoc-last-data args))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
278 (t
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
279 (setq args (eldoc-function-argstring sym))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
280 (setcar eldoc-last-data sym)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
281 (setcdr eldoc-last-data args)))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
282 (and args
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
283 (eldoc-message "%s: %s" sym args))))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
284
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
285 (defun eldoc-fnsym-in-current-sexp ()
100
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
286 (let ((p (point)))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
287 (eldoc-beginning-of-sexp)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
288 (prog1
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
289 ;; Don't do anything if current word is inside a string.
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
290 (if (= (or (char-after (1- (point))) 0) ?\")
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
291 nil
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
292 (eldoc-current-symbol))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
293 (goto-char p))))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
294
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
295 (defun eldoc-beginning-of-sexp ()
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
296 (let ((parse-sexp-ignore-comments t))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
297 (condition-case err
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
298 (while (progn
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
299 (forward-sexp -1)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
300 (or (= (or (char-after (1- (point)))) ?\")
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
301 (> (point) (point-min)))))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
302 (error nil))))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
303
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
304 ;; returns nil unless current word is an interned symbol.
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
305 (defun eldoc-current-symbol ()
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
306 (let ((c (char-after (point))))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
307 (and c
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
308 (memq (char-syntax c) '(?w ?_))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
309 (intern-soft (current-word)))))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
310
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
311 ;; Do indirect function resolution if possible.
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
312 (defun eldoc-symbol-function (fsym)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
313 (let ((defn (and (fboundp fsym)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
314 (symbol-function fsym))))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
315 (and (symbolp defn)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
316 (condition-case err
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
317 (setq defn (indirect-function fsym))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
318 (error (setq defn nil))))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
319 defn))
98
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
320
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
321 (defun eldoc-function-argstring (fn)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
322 (let* ((prelim-def (eldoc-symbol-function fn))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
323 (def (if (eq (car-safe prelim-def) 'macro)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
324 (cdr prelim-def)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
325 prelim-def))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
326 (arglist (cond ((null def) nil)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
327 ((byte-code-function-p def)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
328 (if (fboundp 'compiled-function-arglist)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
329 (funcall 'compiled-function-arglist def)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
330 (aref def 0)))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
331 ((eq (car-safe def) 'lambda)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
332 (nth 1 def))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
333 (t t))))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
334 (eldoc-function-argstring-format arglist)))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
335
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
336 (defun eldoc-function-argstring-format (arglist)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
337 (cond ((not (listp arglist))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
338 (setq arglist nil))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
339 ((symbolp (car arglist))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
340 (setq arglist
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
341 (mapcar (function (lambda (s)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
342 (if (memq s '(&optional &rest))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
343 (symbol-name s)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
344 (funcall eldoc-argument-case
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
345 (symbol-name s)))))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
346 arglist)))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
347 ((stringp (car arglist))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
348 (setq arglist
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
349 (mapcar (function (lambda (s)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
350 (if (member s '("&optional" "&rest"))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
351 s
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
352 (funcall eldoc-argument-case s))))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
353 arglist))))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
354 (concat "(" (mapconcat 'identity arglist " ") ")"))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
355
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
356
100
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
357 (defun eldoc-print-var-docstring (sym)
98
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
358 (eldoc-print-docstring sym (documentation-property
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
359 sym 'variable-documentation t)))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
360
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
361 ;; Print the brief (one-line) documentation string for the symbol.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
362 (defun eldoc-print-docstring (symbol doc)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
363 (and doc
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
364 (eldoc-message "%s" (eldoc-docstring-message symbol doc))))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
365
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
366 ;; If the entire line cannot fit in the echo area, the variable name may be
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
367 ;; truncated or eliminated entirely from the output to make room.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
368 ;; Any leading `*' in the docstring (which indicates the variable is a user
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
369 ;; option) is not printed."
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
370 (defun eldoc-docstring-message (symbol doc)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
371 (and doc
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
372 (let ((name (symbol-name symbol)))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
373 (setq doc (eldoc-docstring-first-line doc))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
374 (save-match-data
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
375 (let* ((doclen (+ (length name) (length ": ") (length doc)))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
376 ;; Subtract 1 from window width since emacs seems not to
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
377 ;; write any chars to the last column, at least for some
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
378 ;; terminal types.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
379 (strip (- doclen (1- (window-width (minibuffer-window))))))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
380 (cond ((> strip 0)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
381 (let* ((len (length name)))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
382 (cond ((>= strip len)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
383 (format "%s" doc))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
384 (t
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
385 (setq name (substring name 0 (- len strip)))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
386 (format "%s: %s" name doc)))))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
387 (t
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
388 (format "%s: %s" symbol doc))))))))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
389
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
390 (defun eldoc-docstring-first-line (doc)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
391 (save-match-data
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
392 (and (string-match "\n" doc)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
393 (setq doc (substring doc 0 (match-beginning 0))))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
394 (and (string-match "^\\*" doc)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
395 (setq doc (substring doc 1))))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
396 doc)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
397
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
398
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
399 ;; Alist of predicate/action pairs.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
400 ;; Each member of the list is a sublist consisting of a predicate function
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
401 ;; used to determine if the arglist for a function can be found using a
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
402 ;; certain pattern, and a function which returns the actual arglist from
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
403 ;; that docstring.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
404 ;;
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
405 ;; The order in this table is significant, since later predicates may be
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
406 ;; more general than earlier ones.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
407 ;;
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
408 ;; Compiler note for Emacs 19.29 and later: these functions will be
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
409 ;; compiled to bytecode, but can't be lazy-loaded even if you set
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
410 ;; byte-compile-dynamic; to do that would require making them named
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
411 ;; top-level defuns, and that's not particularly desirable either.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
412 (defconst eldoc-function-argstring-from-docstring-method-table
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
413 (list
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
414 ;; Try first searching for args starting with symbol name.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
415 ;; This is to avoid matching parenthetical remarks in e.g. sit-for.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
416 (list (function (lambda (doc fn)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
417 (string-match (format "^(%s[^\n)]*)$" fn) doc)))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
418 (function (lambda (doc)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
419 ;; end does not include trailing ")" sequence.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
420 (let ((end (- (match-end 0) 1)))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
421 (if (string-match " +" doc (match-beginning 0))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
422 (substring doc (match-end 0) end)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
423 "")))))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
424
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
425 ;; Try again not requiring this symbol name in the docstring.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
426 ;; This will be the case when looking up aliases.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
427 (list (function (lambda (doc fn)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
428 (string-match "^([^\n)]+)$" doc)))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
429 (function (lambda (doc)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
430 ;; end does not include trailing ")" sequence.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
431 (let ((end (- (match-end 0) 1)))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
432 (and (string-match " +" doc (match-beginning 0))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
433 (substring doc (match-end 0) end))))))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
434
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
435 ;; Emacs subr docstring style:
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
436 ;; (fn arg1 arg2 ...): description...
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
437 (list (function (lambda (doc fn)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
438 (string-match "^([^\n)]+):" doc)))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
439 (function (lambda (doc)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
440 ;; end does not include trailing "):" sequence.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
441 (let ((end (- (match-end 0) 2)))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
442 (and (string-match " +" doc (match-beginning 0))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
443 (substring doc (match-end 0) end))))))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
444
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
445 ;; XEmacs subr docstring style:
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
446 ;; "arguments: (arg1 arg2 ...)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
447 (list (function (lambda (doc fn)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
448 (string-match "^arguments: (\\([^\n)]+\\))" doc)))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
449 (function (lambda (doc)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
450 ;; also skip leading paren, but the first word is
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
451 ;; actually an argument, not the function name.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
452 (substring doc (match-beginning 1) (match-end 1)))))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
453
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
454 ;; This finds the argstring for `condition-case'. Any others?
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
455 (list (function (lambda (doc fn)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
456 (string-match
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
457 (format "^Usage looks like \\((%s[^\n)]*)\\)\\.$" fn)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
458 doc)))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
459 (function (lambda (doc)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
460 ;; end does not include trailing ")" sequence.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
461 (let ((end (- (match-end 1) 1)))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
462 (and (string-match " +" doc (match-beginning 1))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
463 (substring doc (match-end 0) end))))))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
464
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
465 ;; This finds the argstring for `setq-default'. Any others?
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
466 (list (function (lambda (doc fn)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
467 (string-match (format "^[ \t]+\\((%s[^\n)]*)\\)$" fn)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
468 doc)))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
469 (function (lambda (doc)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
470 ;; end does not include trailing ")" sequence.
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
471 (let ((end (- (match-end 1) 1)))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
472 (and (string-match " +" doc (match-beginning 1))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
473 (substring doc (match-end 0) end))))))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
474
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
475 ;; This finds the argstring for `start-process'. Any others?
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
476 (list (function (lambda (doc fn)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
477 (string-match "^Args are +\\([^\n]+\\)$" doc)))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
478 (function (lambda (doc)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
479 (substring doc (match-beginning 1) (match-end 1)))))
100
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
480
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
481 ;; These subrs don't have arglists in their docstrings.
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
482 ;; This is cheating.
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
483 (list (function (lambda (doc fn)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
484 (memq fn '(and or list + -))))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
485 (function (lambda (doc)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
486 ;; The value nil is a placeholder; otherwise, the
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
487 ;; following string may be compiled as a docstring,
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
488 ;; and not a return value for the function.
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
489 ;; In interpreted lisp form they are
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
490 ;; indistinguishable; it only matters for compiled
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
491 ;; forms.
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
492 nil
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
493 "&rest args")))
98
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
494 ))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
495
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
496 (defun eldoc-function-argstring-from-docstring (fn)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
497 (let ((docstring (documentation fn 'raw))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
498 (table eldoc-function-argstring-from-docstring-method-table)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
499 (doc nil)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
500 (doclist nil))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
501 (save-match-data
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
502 (while table
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
503 (cond ((funcall (car (car table)) docstring fn)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
504 (setq doc (funcall (car (cdr (car table))) docstring))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
505 (setq table nil))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
506 (t
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
507 (setq table (cdr table)))))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
508
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
509 (cond ((not (stringp doc))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
510 nil)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
511 ((string-match "&" doc)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
512 (let ((p 0)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
513 (l (length doc)))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
514 (while (< p l)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
515 (cond ((string-match "[ \t\n]+" doc p)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
516 (setq doclist
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
517 (cons (substring doc p (match-beginning 0))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
518 doclist))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
519 (setq p (match-end 0)))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
520 (t
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
521 (setq doclist (cons (substring doc p) doclist))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
522 (setq p l))))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
523 (eldoc-function-argstring-format (nreverse doclist))))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
524 (t
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
525 (concat "(" (funcall eldoc-argument-case doc) ")"))))))
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
526
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
527
100
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
528 ;; When point is in a sexp, the function args are not reprinted in the echo
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
529 ;; area after every possible interactive command because some of them print
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
530 ;; their own messages in the echo area; the eldoc functions would instantly
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
531 ;; overwrite them unless it is more restrained.
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
532 ;; These functions do display-command table management.
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
533
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
534 (defun eldoc-add-command (&rest cmds)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
535 (or eldoc-message-commands
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
536 (setq eldoc-message-commands
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
537 (make-vector eldoc-message-commands-table-size 0)))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
538
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
539 (let (name sym)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
540 (while cmds
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
541 (setq name (car cmds))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
542 (setq cmds (cdr cmds))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
543
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
544 (cond ((symbolp name)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
545 (setq sym name)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
546 (setq name (symbol-name sym)))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
547 ((stringp name)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
548 (setq sym (intern-soft name))))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
549
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
550 (and (symbolp sym)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
551 (fboundp sym)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
552 (set (intern name eldoc-message-commands) t)))))
98
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
553
100
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
554 (defun eldoc-add-command-completions (&rest names)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
555 (while names
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
556 (apply 'eldoc-add-command
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
557 (all-completions (car names) obarray 'fboundp))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
558 (setq names (cdr names))))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
559
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
560 (defun eldoc-remove-command (&rest cmds)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
561 (let (name)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
562 (while cmds
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
563 (setq name (car cmds))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
564 (setq cmds (cdr cmds))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
565
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
566 (and (symbolp name)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
567 (setq name (symbol-name name)))
98
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
568
100
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
569 (if (fboundp 'unintern)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
570 (unintern name eldoc-message-commands)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
571 (let ((s (intern-soft name eldoc-message-commands)))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
572 (and s
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
573 (makunbound s)))))))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
574
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
575 (defun eldoc-remove-command-completions (&rest names)
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
576 (while names
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
577 (apply 'eldoc-remove-command
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
578 (all-completions (car names) eldoc-message-commands))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
579 (setq names (cdr names))))
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
580
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
581 ;; Prime the command list.
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
582 (eldoc-add-command-completions
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
583 "backward-" "beginning-of-" "delete-other-windows" "delete-window"
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
584 "end-of-" "forward-" "goto-" "mouse-set-point" "next-" "other-window"
4be1180a9e89 Import from CVS: tag r20-1b2
cvs
parents: 98
diff changeset
585 "previous-" "recenter" "scroll-" "self-insert-command" "split-window-")
98
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
586
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
587 (provide 'eldoc)
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
588
0d2f883870bc Import from CVS: tag r20-1b1
cvs
parents:
diff changeset
589 ;;; eldoc.el ends here