Mercurial > hg > xemacs-beta
annotate lisp/syntax.el @ 5750:66d2f63df75f
Correct some spelling and formatting in behavior.el.
Mentioned in tracker issue 826, the third thing mentioned there (the file
name at the bottom of the file) had already been fixed.
lisp/ChangeLog addition:
2013-08-05 Aidan Kehoe <kehoea@parhasard.net>
* behavior.el:
(override-behavior):
Correct some spelling and formatting here, thank you Steven
Mitchell in tracker issue 826.
| author | Aidan Kehoe <kehoea@parhasard.net> |
|---|---|
| date | Mon, 05 Aug 2013 10:05:32 +0100 |
| parents | 308d34e9f07d |
| children |
| rev | line source |
|---|---|
| 428 | 1 ;; syntax.el --- Syntax-table hacking stuff, moved from syntax.c |
| 2 | |
| 3 ;; Copyright (C) 1993, 1997 Free Software Foundation, Inc. | |
| 4 ;; Copyright (C) 1995 Sun Microsystems. | |
|
4945
99e465e2da2e
(main branch) Update make-syntax-table doc
Ben Wing <ben@xemacs.org>
parents:
4806
diff
changeset
|
5 ;; Copyright (C) 2005, 2010 Ben Wing. |
| 428 | 6 |
| 7 ;; This file is part of XEmacs. | |
| 8 | |
|
5402
308d34e9f07d
Changed bulk of GPLv2 or later files identified by script
Mats Lidell <matsl@xemacs.org>
parents:
4945
diff
changeset
|
9 ;; XEmacs is free software: you can redistribute it and/or modify it |
|
308d34e9f07d
Changed bulk of GPLv2 or later files identified by script
Mats Lidell <matsl@xemacs.org>
parents:
4945
diff
changeset
|
10 ;; under the terms of the GNU General Public License as published by the |
|
308d34e9f07d
Changed bulk of GPLv2 or later files identified by script
Mats Lidell <matsl@xemacs.org>
parents:
4945
diff
changeset
|
11 ;; Free Software Foundation, either version 3 of the License, or (at your |
|
308d34e9f07d
Changed bulk of GPLv2 or later files identified by script
Mats Lidell <matsl@xemacs.org>
parents:
4945
diff
changeset
|
12 ;; option) any later version. |
| 428 | 13 |
|
5402
308d34e9f07d
Changed bulk of GPLv2 or later files identified by script
Mats Lidell <matsl@xemacs.org>
parents:
4945
diff
changeset
|
14 ;; XEmacs is distributed in the hope that it will be useful, but WITHOUT |
|
308d34e9f07d
Changed bulk of GPLv2 or later files identified by script
Mats Lidell <matsl@xemacs.org>
parents:
4945
diff
changeset
|
15 ;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
|
308d34e9f07d
Changed bulk of GPLv2 or later files identified by script
Mats Lidell <matsl@xemacs.org>
parents:
4945
diff
changeset
|
16 ;; FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
|
308d34e9f07d
Changed bulk of GPLv2 or later files identified by script
Mats Lidell <matsl@xemacs.org>
parents:
4945
diff
changeset
|
17 ;; for more details. |
| 428 | 18 |
| 19 ;; You should have received a copy of the GNU General Public License | |
|
5402
308d34e9f07d
Changed bulk of GPLv2 or later files identified by script
Mats Lidell <matsl@xemacs.org>
parents:
4945
diff
changeset
|
20 ;; along with XEmacs. If not, see <http://www.gnu.org/licenses/>. |
| 428 | 21 |
| 22 ;;; Synched up with: FSF 19.28. | |
| 23 | |
| 24 ;;; Commentary: | |
| 25 | |
| 26 ;; This file is dumped with XEmacs. | |
| 27 | |
| 28 ;; Note: FSF does not have a file syntax.el. This stuff is | |
| 29 ;; in syntax.c. See comments there about not merging past 19.28. | |
| 30 | |
| 31 ;; Significantly hacked upon by Ben Wing. | |
| 32 | |
| 33 ;;; Code: | |
| 34 | |
| 35 (defun make-syntax-table (&optional oldtable) | |
| 36 "Return a new syntax table. | |
|
4945
99e465e2da2e
(main branch) Update make-syntax-table doc
Ben Wing <ben@xemacs.org>
parents:
4806
diff
changeset
|
37 |
|
99e465e2da2e
(main branch) Update make-syntax-table doc
Ben Wing <ben@xemacs.org>
parents:
4806
diff
changeset
|
38 It inherits all characters from the standard syntax table. |
|
99e465e2da2e
(main branch) Update make-syntax-table doc
Ben Wing <ben@xemacs.org>
parents:
4806
diff
changeset
|
39 |
|
99e465e2da2e
(main branch) Update make-syntax-table doc
Ben Wing <ben@xemacs.org>
parents:
4806
diff
changeset
|
40 A syntax table is a char table of type `syntax' (see `make-char-table'). |
|
99e465e2da2e
(main branch) Update make-syntax-table doc
Ben Wing <ben@xemacs.org>
parents:
4806
diff
changeset
|
41 The valid values are integers (intended to be syntax codes as generated by |
|
99e465e2da2e
(main branch) Update make-syntax-table doc
Ben Wing <ben@xemacs.org>
parents:
4806
diff
changeset
|
42 `syntax-string-to-code'), and the default result given by `get-char-table' |
|
99e465e2da2e
(main branch) Update make-syntax-table doc
Ben Wing <ben@xemacs.org>
parents:
4806
diff
changeset
|
43 is the syntax code for `word'. (Note: In 21.4 and prior, it was the code |
|
99e465e2da2e
(main branch) Update make-syntax-table doc
Ben Wing <ben@xemacs.org>
parents:
4806
diff
changeset
|
44 for `inherit'.) |
|
99e465e2da2e
(main branch) Update make-syntax-table doc
Ben Wing <ben@xemacs.org>
parents:
4806
diff
changeset
|
45 |
|
99e465e2da2e
(main branch) Update make-syntax-table doc
Ben Wing <ben@xemacs.org>
parents:
4806
diff
changeset
|
46 To modify a syntax table, you should normally use `modify-syntax-entry' |
|
99e465e2da2e
(main branch) Update make-syntax-table doc
Ben Wing <ben@xemacs.org>
parents:
4806
diff
changeset
|
47 rather than directly modify the table with `put-char-table'. |
|
99e465e2da2e
(main branch) Update make-syntax-table doc
Ben Wing <ben@xemacs.org>
parents:
4806
diff
changeset
|
48 |
|
99e465e2da2e
(main branch) Update make-syntax-table doc
Ben Wing <ben@xemacs.org>
parents:
4806
diff
changeset
|
49 See `modify-syntax-entry' for a description of the character codes used |
|
99e465e2da2e
(main branch) Update make-syntax-table doc
Ben Wing <ben@xemacs.org>
parents:
4806
diff
changeset
|
50 to indicate the various syntax classes." |
| 428 | 51 (make-char-table 'syntax)) |
| 52 | |
|
4468
a78d697ccd2c
Import and extend GNU's descr-text.el, supporting prefix argument for C-x =
Aidan Kehoe <kehoea@parhasard.net>
parents:
3067
diff
changeset
|
53 (defun syntax-after (pos) |
|
a78d697ccd2c
Import and extend GNU's descr-text.el, supporting prefix argument for C-x =
Aidan Kehoe <kehoea@parhasard.net>
parents:
3067
diff
changeset
|
54 "Return the raw syntax of the char after POS. |
|
a78d697ccd2c
Import and extend GNU's descr-text.el, supporting prefix argument for C-x =
Aidan Kehoe <kehoea@parhasard.net>
parents:
3067
diff
changeset
|
55 If POS is outside the buffer's accessible portion, return nil." |
|
a78d697ccd2c
Import and extend GNU's descr-text.el, supporting prefix argument for C-x =
Aidan Kehoe <kehoea@parhasard.net>
parents:
3067
diff
changeset
|
56 (unless (or (< pos (point-min)) (>= pos (point-max))) |
|
a78d697ccd2c
Import and extend GNU's descr-text.el, supporting prefix argument for C-x =
Aidan Kehoe <kehoea@parhasard.net>
parents:
3067
diff
changeset
|
57 (let ((st (if lookup-syntax-properties |
|
a78d697ccd2c
Import and extend GNU's descr-text.el, supporting prefix argument for C-x =
Aidan Kehoe <kehoea@parhasard.net>
parents:
3067
diff
changeset
|
58 (get-char-property pos 'syntax-table)))) |
|
a78d697ccd2c
Import and extend GNU's descr-text.el, supporting prefix argument for C-x =
Aidan Kehoe <kehoea@parhasard.net>
parents:
3067
diff
changeset
|
59 (char-syntax (char-after pos) (or st (syntax-table)))))) |
|
a78d697ccd2c
Import and extend GNU's descr-text.el, supporting prefix argument for C-x =
Aidan Kehoe <kehoea@parhasard.net>
parents:
3067
diff
changeset
|
60 |
| 428 | 61 (defun simple-set-syntax-entry (char spec table) |
| 62 (put-char-table char spec table)) | |
| 63 | |
| 64 (defun char-syntax-from-code (code) | |
| 65 "Extract the syntax designator from the internal syntax code CODE. | |
| 66 CODE is the value actually contained in the syntax table." | |
| 67 (if (consp code) | |
| 68 (setq code (car code))) | |
| 69 (aref (syntax-designator-chars) (logand code 127))) | |
| 70 | |
| 71 (defun set-char-syntax-in-code (code desig) | |
| 72 "Return a new internal syntax code whose syntax designator is DESIG. | |
| 73 Other characteristics are the same as in CODE." | |
| 74 (let ((newcode (if (consp code) (car code) code))) | |
| 75 (setq newcode (logior (string-match | |
| 76 (regexp-quote (char-to-string desig)) | |
| 77 (syntax-designator-chars)) | |
| 78 (logand newcode (lognot 127)))) | |
| 79 (if (consp code) (cons newcode (cdr code)) | |
| 80 newcode))) | |
| 81 | |
| 82 (defun syntax-code-to-string (code) | |
| 83 "Return a string equivalent to internal syntax code CODE. | |
| 84 The string can be passed to `modify-syntax-entry'. | |
| 85 If CODE is invalid, return nil." | |
| 86 (let ((match (and (consp code) (cdr code))) | |
| 87 (codes (syntax-designator-chars))) | |
| 88 (if (consp code) | |
| 89 (setq code (car code))) | |
| 90 (if (or (not (integerp code)) | |
| 91 (> (logand code 127) (length codes))) | |
| 92 nil | |
| 93 (with-output-to-string | |
| 94 (let* ((spec (elt codes (logand code 127))) | |
| 95 (b3 (lsh code -16)) | |
| 96 (start1 (/= 0 (logand b3 128))) ;logtest! | |
| 97 (start1b (/= 0 (logand b3 64))) | |
| 98 (start2 (/= 0 (logand b3 32))) | |
| 99 (start2b (/= 0 (logand b3 16))) | |
| 100 (end1 (/= 0 (logand b3 8))) | |
| 101 (end1b (/= 0 (logand b3 4))) | |
| 102 (end2 (/= 0 (logand b3 2))) | |
| 103 (end2b (/= 0 (logand b3 1))) | |
| 104 (prefix (/= 0 (logand code 128))) | |
| 105 (single-char-p (or (= spec ?<) (= spec ?>))) | |
| 106 ) | |
| 107 (write-char spec) | |
| 108 (write-char (if match match 32)) | |
| 109 ;;; (if start1 (if single-char-p (write-char ?a) (write-char ?1))) | |
| 110 (if start1 (if single-char-p (write-char ? ) (write-char ?1))) | |
| 111 (if start2 (write-char ?2)) | |
| 112 ;;; (if end1 (if single-char-p (write-char ?a) (write-char ?3))) | |
| 113 (if end1 (if single-char-p (write-char ? ) (write-char ?3))) | |
| 114 (if end2 (write-char ?4)) | |
| 115 (if start1b (if single-char-p (write-char ?b) (write-char ?5))) | |
| 116 (if start2b (write-char ?6)) | |
| 117 (if end1b (if single-char-p (write-char ?b) (write-char ?7))) | |
| 118 (if end2b (write-char ?8)) | |
| 119 (if prefix (write-char ?p))))))) | |
| 120 | |
| 121 (defun syntax-string-to-code (string) | |
| 122 "Return the internal syntax code equivalent to STRING. | |
| 123 STRING should be something acceptable as the second argument to | |
| 124 `modify-syntax-entry'. | |
| 125 If STRING is invalid, signal an error." | |
| 126 (let* ((bflag nil) | |
| 127 (b3 0) | |
| 128 (ch0 (aref string 0)) | |
| 129 (len (length string)) | |
| 130 (code (string-match (regexp-quote (char-to-string ch0)) | |
| 131 (syntax-designator-chars))) | |
| 132 (i 2) | |
| 133 ch) | |
| 134 (or code | |
| 135 (error "Invalid syntax designator: %S" string)) | |
| 136 (while (< i len) | |
| 137 (setq ch (aref string i)) | |
| 138 (incf i) | |
| 139 (case ch | |
| 140 (?1 (setq b3 (logior b3 128))) | |
| 141 (?2 (setq b3 (logior b3 32))) | |
| 142 (?3 (setq b3 (logior b3 8))) | |
| 143 (?4 (setq b3 (logior b3 2))) | |
| 144 (?5 (setq b3 (logior b3 64))) | |
| 145 (?6 (setq b3 (logior b3 16))) | |
| 146 (?7 (setq b3 (logior b3 4))) | |
| 147 (?8 (setq b3 (logior b3 1))) | |
| 148 (?a (case ch0 | |
| 149 (?< (setq b3 (logior b3 128))) | |
| 150 (?> (setq b3 (logior b3 8))))) | |
| 151 (?b (case ch0 | |
| 152 (?< (setq b3 (logior b3 64) bflag t)) | |
| 153 (?> (setq b3 (logior b3 4) bflag t)))) | |
| 154 (?p (setq code (logior code (lsh 1 7)))) | |
| 155 (?\ nil) ;; ignore for compatibility | |
| 156 (otherwise | |
| 157 (error "Invalid syntax description flag: %S" string)))) | |
| 158 ;; default single char style if `b' has not been seen | |
| 159 (if (not bflag) | |
| 160 (case ch0 | |
| 161 (?< (setq b3 (logior b3 128))) | |
| 162 (?> (setq b3 (logior b3 8))))) | |
| 163 (setq code (logior code (lsh b3 16))) | |
| 164 (if (and (> len 1) | |
| 165 ;; tough luck if you want to make space a paren! | |
| 166 (/= (aref string 1) ?\ )) | |
| 167 (setq code (cons code (aref string 1)))) | |
| 168 code)) | |
| 169 | |
| 444 | 170 (defun modify-syntax-entry (char-range spec &optional syntax-table) |
| 428 | 171 "Set syntax for the characters CHAR-RANGE according to string SPEC. |
| 172 CHAR-RANGE is a single character or a range of characters, | |
| 173 as per `put-char-table'. | |
| 444 | 174 The syntax is changed only for SYNTAX-TABLE, which defaults to |
| 428 | 175 the current buffer's syntax table. |
| 176 The first character of SPEC should be one of the following: | |
| 177 Space whitespace syntax. w word constituent. | |
| 178 _ symbol constituent. . punctuation. | |
| 179 \( open-parenthesis. \) close-parenthesis. | |
| 180 \" string quote. \\ character-quote. | |
| 181 $ paired delimiter. ' expression quote or prefix operator. | |
| 182 < comment starter. > comment ender. | |
| 183 / character-quote. @ inherit from `standard-syntax-table'. | |
| 184 | |
| 185 Only single-character comment start and end sequences are represented thus. | |
| 186 Two-character sequences are represented as described below. | |
| 187 The second character of SPEC is the matching parenthesis, | |
| 188 used only if the first character is `(' or `)'. | |
| 189 Any additional characters are flags. | |
| 190 Defined flags are the characters 1, 2, 3, 4, 5, 6, 7, 8, p, a, and b. | |
| 191 1 means C is the first of a two-char comment start sequence of style a. | |
| 192 2 means C is the second character of such a sequence. | |
| 193 3 means C is the first of a two-char comment end sequence of style a. | |
| 194 4 means C is the second character of such a sequence. | |
| 195 5 means C is the first of a two-char comment start sequence of style b. | |
| 196 6 means C is the second character of such a sequence. | |
| 197 7 means C is the first of a two-char comment end sequence of style b. | |
| 198 8 means C is the second character of such a sequence. | |
| 199 p means C is a prefix character for `backward-prefix-chars'; | |
| 200 such characters are treated as whitespace when they occur | |
| 201 between expressions. | |
| 202 a means C is comment starter or comment ender for comment style a (default) | |
| 203 b means C is comment starter or comment ender for comment style b." | |
| 444 | 204 (interactive |
| 428 | 205 ;; I really don't know why this is interactive |
| 206 ;; help-form should at least be made useful while reading the second arg | |
| 207 "cSet syntax for character: \nsSet syntax for %c to: ") | |
| 444 | 208 (simple-set-syntax-entry |
| 209 char-range | |
| 210 (syntax-string-to-code spec) | |
| 211 (cond ((syntax-table-p syntax-table) | |
| 212 syntax-table) | |
| 213 ((null syntax-table) | |
| 214 (syntax-table)) | |
| 215 (t | |
| 216 (wrong-type-argument 'syntax-table-p syntax-table)))) | |
| 428 | 217 nil) |
| 218 | |
|
4806
fd36a980d701
Use uninterned symbols in various information-hiding contexts.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4468
diff
changeset
|
219 ((macro |
|
fd36a980d701
Use uninterned symbols in various information-hiding contexts.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4468
diff
changeset
|
220 . (lambda (map-syntax-definition) |
|
fd36a980d701
Use uninterned symbols in various information-hiding contexts.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4468
diff
changeset
|
221 "Replace the variable names in MAP-SYNTAX-DEFINITION with uninterned |
|
fd36a980d701
Use uninterned symbols in various information-hiding contexts.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4468
diff
changeset
|
222 symbols, at byte-compile time. This avoids the risk of variable names |
|
fd36a980d701
Use uninterned symbols in various information-hiding contexts.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4468
diff
changeset
|
223 within the functions called from MAP-SYNTAX-DEFINITION being shared with |
|
fd36a980d701
Use uninterned symbols in various information-hiding contexts.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4468
diff
changeset
|
224 MAP-SYNTAX-DEFINITION, and as such subject to modification, one of the |
|
fd36a980d701
Use uninterned symbols in various information-hiding contexts.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4468
diff
changeset
|
225 common downsides of dynamic scope." |
|
fd36a980d701
Use uninterned symbols in various information-hiding contexts.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4468
diff
changeset
|
226 (nsublis |
|
fd36a980d701
Use uninterned symbols in various information-hiding contexts.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4468
diff
changeset
|
227 '((syntax-table . #:syntax-table) |
|
fd36a980d701
Use uninterned symbols in various information-hiding contexts.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4468
diff
changeset
|
228 (m-s-function . #:function) |
|
fd36a980d701
Use uninterned symbols in various information-hiding contexts.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4468
diff
changeset
|
229 (range . #:range) |
|
fd36a980d701
Use uninterned symbols in various information-hiding contexts.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4468
diff
changeset
|
230 (key . #:key) |
|
fd36a980d701
Use uninterned symbols in various information-hiding contexts.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4468
diff
changeset
|
231 (value . #:value)) |
|
fd36a980d701
Use uninterned symbols in various information-hiding contexts.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4468
diff
changeset
|
232 map-syntax-definition))) |
|
fd36a980d701
Use uninterned symbols in various information-hiding contexts.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4468
diff
changeset
|
233 (defun map-syntax-table (m-s-function syntax-table &optional range) |
|
fd36a980d701
Use uninterned symbols in various information-hiding contexts.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4468
diff
changeset
|
234 "Map FUNCTION over entries in SYNTAX-TABLE, collapsing inheritance. |
| 428 | 235 This is similar to `map-char-table', but works only on syntax tables, and |
| 236 collapses any entries that call for inheritance by invisibly substituting | |
| 237 the inherited values from the standard syntax table." | |
|
4806
fd36a980d701
Use uninterned symbols in various information-hiding contexts.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4468
diff
changeset
|
238 (check-argument-type 'syntax-table-p syntax-table) |
|
fd36a980d701
Use uninterned symbols in various information-hiding contexts.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4468
diff
changeset
|
239 (map-char-table #'(lambda (key value) |
|
fd36a980d701
Use uninterned symbols in various information-hiding contexts.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4468
diff
changeset
|
240 (if (eq ?@ (char-syntax-from-code value)) |
|
fd36a980d701
Use uninterned symbols in various information-hiding contexts.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4468
diff
changeset
|
241 (map-char-table |
|
fd36a980d701
Use uninterned symbols in various information-hiding contexts.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4468
diff
changeset
|
242 #'(lambda (key value) |
|
fd36a980d701
Use uninterned symbols in various information-hiding contexts.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4468
diff
changeset
|
243 (funcall m-s-function key value)) |
|
fd36a980d701
Use uninterned symbols in various information-hiding contexts.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4468
diff
changeset
|
244 (standard-syntax-table) |
|
fd36a980d701
Use uninterned symbols in various information-hiding contexts.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4468
diff
changeset
|
245 key) |
|
fd36a980d701
Use uninterned symbols in various information-hiding contexts.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4468
diff
changeset
|
246 (funcall m-s-function key value))) |
|
fd36a980d701
Use uninterned symbols in various information-hiding contexts.
Aidan Kehoe <kehoea@parhasard.net>
parents:
4468
diff
changeset
|
247 syntax-table range))) |
| 428 | 248 |
| 249 ;(defun test-xm () | |
| 250 ; (let ((o (copy-syntax-table)) | |
| 251 ; (n (copy-syntax-table)) | |
| 252 ; (codes (syntax-designator-chars)) | |
| 253 ; (flags "12345678abp")) | |
| 254 ; (while t | |
| 255 ; (let ((spec (concat (char-to-string (elt codes | |
| 256 ; (random (length codes)))))) | |
| 257 ; (if (= (random 4) 0) | |
| 258 ; "b" | |
| 259 ; " ") | |
| 260 ; (let* ((n (random 4)) | |
| 261 ; (s (make-string n 0))) | |
| 262 ; (while (> n 0) | |
| 263 ; (setq n (1- n)) | |
| 264 ; (aset s n (aref flags (random (length flags))))) | |
| 265 ; s)))) | |
| 266 ; (message "%S..." spec) | |
| 267 ; (modify-syntax-entry ?a spec o) | |
| 268 ; (xmodify-syntax-entry ?a spec n) | |
| 269 ; (or (= (aref o ?a) (aref n ?a)) | |
| 270 ; (error "%s" | |
| 271 ; (format "fucked with %S: %x %x" | |
| 272 ; spec (aref o ?a) (aref n ?a)))))))) | |
| 273 | |
| 274 | |
| 3067 | 275 (defun describe-char-table (table mapper describe-value stream) |
| 276 "Describe char-table TABLE, outputting to STREAM. | |
| 277 MAPPER maps over the table and should be `map-char-table' or | |
| 278 `map-syntax-table'. DESCRIBE-VALUE is a function of two arguments, | |
| 279 VALUE and STREAM, and should output a description of VALUE." | |
| 428 | 280 (let (first-char |
| 281 last-char | |
| 282 prev-val | |
| 283 (describe-one | |
| 284 (if (featurep 'mule) | |
| 285 #'(lambda (first last value stream) | |
| 286 (if (equal first last) | |
| 287 (cond ((vectorp first) | |
| 288 (princ (format "%s, row %d\t" | |
| 502 | 289 (declare-fboundp (charset-name |
| 290 (aref first 0))) | |
| 428 | 291 (aref first 1)) |
| 292 stream)) | |
| 293 ((symbolp first) | |
| 294 (princ first stream) | |
| 295 (princ "\t" stream)) | |
| 296 (t | |
| 297 (princ (text-char-description first) stream) | |
| 298 (princ "\t" stream))) | |
| 299 (cond ((vectorp first) | |
| 300 (princ (format "%s, rows %d .. %d\t" | |
| 502 | 301 (declare-fboundp (charset-name |
| 302 (aref first 0))) | |
| 428 | 303 (aref first 1) |
| 304 (aref last 1)) | |
| 305 stream)) | |
| 306 ((symbolp first) | |
| 307 (princ (format "%s .. %s\t" first last) stream)) | |
| 308 (t | |
| 309 (princ (format "%s .. %s\t" | |
| 310 (text-char-description first) | |
| 311 (text-char-description last)) | |
| 312 stream)))) | |
| 3067 | 313 (funcall describe-value value stream)) |
| 428 | 314 #'(lambda (first last value stream) |
| 315 (let* ((tem (text-char-description first)) | |
| 316 (pos (length tem)) | |
| 317 ;;(limit (cond ((numberp ctl-arrow) ctl-arrow) | |
| 318 ;; ((memq ctl-arrow '(t nil)) 256) | |
| 319 ;; (t 160))) | |
| 320 ) | |
| 321 (princ tem stream) | |
| 322 (if (> last first) | |
| 323 (progn | |
| 324 (princ " .. " stream) | |
| 325 (setq tem (text-char-description last)) | |
| 326 (princ tem stream) | |
| 327 (setq pos (+ pos (length tem) 4)))) | |
| 328 (while (progn (write-char ?\ stream) | |
| 329 (setq pos (1+ pos)) | |
| 330 (< pos 16)))) | |
| 3067 | 331 (funcall describe-value value stream))))) |
| 332 (funcall mapper | |
| 428 | 333 #'(lambda (range value) |
| 334 (cond | |
| 335 ((not first-char) | |
| 336 (setq first-char range | |
| 337 last-char range | |
| 338 prev-val value)) | |
| 339 ((and (equal value prev-val) | |
| 340 (or | |
| 341 (and (characterp range) | |
| 342 (characterp first-char) | |
| 343 (or (not (featurep 'mule)) | |
| 502 | 344 (eq (declare-fboundp (char-charset range)) |
| 345 (declare-fboundp (char-charset first-char)))) | |
| 428 | 346 (= (char-int last-char) (1- (char-int range)))) |
| 347 (and (vectorp range) | |
| 348 (vectorp first-char) | |
| 349 (eq (aref range 0) (aref first-char 0)) | |
| 350 (= (aref last-char 1) (1- (aref range 1)))))) | |
| 351 (setq last-char range)) | |
| 352 (t | |
| 353 (funcall describe-one first-char last-char prev-val stream) | |
| 354 (setq first-char range | |
| 355 last-char range | |
| 356 prev-val value))) | |
| 357 nil) | |
| 358 table) | |
| 359 (if first-char | |
| 360 (funcall describe-one first-char last-char prev-val stream)))) | |
| 361 | |
| 3067 | 362 (defun describe-syntax-table (table stream) |
| 363 "Output a description of TABLE (a syntax table) to STREAM." | |
| 364 (describe-char-table table 'map-syntax-table 'describe-syntax-code stream)) | |
| 365 | |
| 428 | 366 (defun describe-syntax-code (code stream) |
| 367 (let ((match (and (consp code) (cdr code))) | |
| 368 (invalid (gettext "**invalid**")) ;(empty "") ;constants | |
| 369 (standard-output (or stream standard-output)) | |
| 370 ;; #### I18N3 should temporarily set buffer to output-translatable | |
| 371 (in #'(lambda (string) | |
| 372 (princ ",\n\t\t\t\t ") | |
| 373 (princ string))) | |
| 374 (syntax-string (syntax-code-to-string code))) | |
| 375 (if (consp code) | |
| 376 (setq code (car code))) | |
| 377 (if (null syntax-string) | |
| 378 (princ invalid) | |
| 379 (princ syntax-string) | |
| 380 (princ "\tmeaning: ") | |
| 381 (princ (aref ["whitespace" "punctuation" "word-constituent" | |
| 382 "symbol-constituent" "open-paren" "close-paren" | |
| 383 "expression-prefix" "string-quote" "paired-delimiter" | |
| 384 "escape" "character-quote" "comment-begin" "comment-end" | |
| 385 "inherit" "extended-word-constituent"] | |
| 386 (logand code 127))) | |
| 387 | |
| 388 (if match | |
| 389 (progn | |
| 390 (princ ", matches ") | |
| 391 (princ (text-char-description match)))) | |
| 392 (let* ((spec (elt syntax-string 0)) | |
| 393 (b3 (lsh code -16)) | |
| 394 (start1 (/= 0 (logand b3 128))) ;logtest! | |
| 395 (start1b (/= 0 (logand b3 64))) | |
| 396 (start2 (/= 0 (logand b3 32))) | |
| 397 (start2b (/= 0 (logand b3 16))) | |
| 398 (end1 (/= 0 (logand b3 8))) | |
| 399 (end1b (/= 0 (logand b3 4))) | |
| 400 (end2 (/= 0 (logand b3 2))) | |
| 401 (end2b (/= 0 (logand b3 1))) | |
| 402 (prefix (/= 0 (logand code 128))) | |
| 403 (single-char-p (or (= spec ?<) (= spec ?>)))) | |
| 404 (if start1 | |
| 405 (if single-char-p | |
| 406 (princ ", style A") | |
| 407 (funcall in | |
| 408 (gettext "first character of comment-start sequence A")))) | |
| 409 (if start2 | |
| 410 (funcall in | |
| 411 (gettext "second character of comment-start sequence A"))) | |
| 412 (if end1 | |
| 413 (if single-char-p | |
| 414 (princ ", style A") | |
| 415 (funcall in | |
| 416 (gettext "first character of comment-end sequence A")))) | |
| 417 (if end2 | |
| 418 (funcall in | |
| 419 (gettext "second character of comment-end sequence A"))) | |
| 420 (if start1b | |
| 421 (if single-char-p | |
| 422 (princ ", style B") | |
| 423 (funcall in | |
| 424 (gettext "first character of comment-start sequence B")))) | |
| 425 (if start2b | |
| 426 (funcall in | |
| 427 (gettext "second character of comment-start sequence B"))) | |
| 428 (if end1b | |
| 429 (if single-char-p | |
| 430 (princ ", style B") | |
| 431 (funcall in | |
| 432 (gettext "first character of comment-end sequence B")))) | |
| 433 (if end2b | |
| 434 (funcall in | |
| 435 (gettext "second character of comment-end sequence B"))) | |
| 436 (if prefix | |
| 437 (funcall in | |
| 438 (gettext "prefix character for `backward-prefix-chars'")))) | |
| 439 (terpri stream)))) | |
| 440 | |
| 441 (defun symbol-near-point () | |
| 442 "Return the first textual item to the nearest point." | |
| 443 (interactive) | |
| 444 ;alg stolen from etag.el | |
| 445 (save-excursion | |
| 446 (if (or (bobp) (not (memq (char-syntax (char-before)) '(?w ?_)))) | |
| 447 (while (not (looking-at "\\sw\\|\\s_\\|\\'")) | |
| 448 (forward-char 1))) | |
| 449 (while (looking-at "\\sw\\|\\s_") | |
| 450 (forward-char 1)) | |
| 451 (if (re-search-backward "\\sw\\|\\s_" nil t) | |
| 452 (regexp-quote | |
| 453 (progn (forward-char 1) | |
| 454 (buffer-substring (point) | |
| 455 (progn (forward-sexp -1) | |
| 456 (while (looking-at "\\s'") | |
| 457 (forward-char 1)) | |
| 458 (point))))) | |
| 459 nil))) | |
| 460 | |
| 461 ;;; syntax.el ends here |