- From: Rick Jelliffe <ricko@allette.com.au>
- Date: Fri, 4 Jul 1997 04:05:20 +1000
- To: "James Clark" <jjc@jclark.com>, <w3c-sgml-wg@w3.org>
> From: James Clark <jjc@jclark.com>
> Remember that numbers in the SGML declaration are restricted to 8
digits
> (because the SGML declaration uses the reference concrete syntax), so
there
> is no way legally in SGML to declare UCS-4 as the document character
set.
Pro: Maybe 8 digit decimal numbers means ISO 10646 can allocate about
1524
more planes before we reach the limit. So why not UCS-4?
Con: I think we should completely tie XML 1.0 into Unicode 2.0 and
review it
after a year: Unicode is a vendor's profile just like XML and I think
implementability and the availability of standard libraries that can
handle
the character size we choose are the most important concerns.
Con: When plane 2 gets defined, we will have to make up a new SGML
declaration
anyway, if people still want to have universal naming. So why do it
now?
Anyway, here is a suggested re-revised SGML declaration, including
* APPINFO for ICADD and HyTime,
* ":" moved to NAMESTART,
* Mr Murata's latest advice about the ditto and the ideographic close,
and
* dire warnings about using uncommon characters.
<!SGML "ISO 8879:1986 (ENR)"
-- "+//IDN W3.ORG//SD SGML Declaration for XML 1.0//EN" --
CHARSET
BASESET
"ISO Registration Number 176//CHARSET
ISO/IEC 10646-1:1993 UCS-2 with implementation
level 3//ESC 2/5 2/15 4/5"
-- e.g. Unicode 2.0 --
DESCSET
0 9 UNUSED
9 2 9
11 2 UNUSED
13 1 13
14 18 UNUSED
32 95 32
127 1 UNUSED
128 32 UNUSED
160 65376 160
CAPACITY SGMLREF
-- Capacities are not restricted in XML --
TOTALCAP 99999999
ENTCAP 99999999
ENTCHCAP 99999999
ELEMCAP 99999999
GRPCAP 99999999
EXGRPCAP 99999999
EXNMCAP 99999999
ATTCAP 99999999
ATTCHCAP 99999999
AVGRPCAP 99999999
NOTCAP 99999999
NOTCHCAP 99999999
IDCAP 99999999
IDREFCAP 99999999
MAPCAP 99999999
LKSETCAP 99999999
LKNMCAP 99999999
SCOPE DOCUMENT
SYNTAX
-- "+//IDN W3.ORG//SYNTAX ERCS for XML 1.0//EN" --
SHUNCHAR NONE
BASESET "ISO Registration Number 176//CHARSET
ISO/IEC 10646-1:1993 UCS-2 with implementation
level 3//ESC 2/5 2/15 4/5"
DESCSET
0 65536 0
FUNCTION
RE 13
RS 10
SPACE 32
TAB SEPCHAR 9
-- The following space characters are not valid SEPCHAR.--
-- However, use of these characters to separate tokens --
-- in markup is an error of validity not WFness. --
-- ITAB 12288 ideographic space --
-- ENSP 8194 --
-- EMSP 8195 --
-- EMSP3 8196 --
-- EMSP4 8197 --
-- EMSP6 8198 --
-- FGSP 8199 --
-- PUNKSP 8200 --
-- THINSP 8201 --
-- HAIRSP 8202 --
-- NBSP 160 --
NAMING
-- The use of uncommon characters is deprecated --
LCNMSTRT
224-246 248-255 257 259 261 263 265 267 269 271 273
275 277 279 281 283 285 287 289 291 293 295 297 299
301 303 305 307 309 311 314 316 318 320 322 324 326
328 331 333 335 337 339 341 343 345 347 349 351 353
355 357 359 361 363 365 367 369 371 373 375 378 380
382 383 387 389 392 396 402 409 417 419 421 424 429
432 436 438 441 445 453 454 456 457 459 460 462 464
466 468 470 472 474 476 479 481 483 485 487 489 491
493 495 498 499 501 507 509 511 513 515 517 519 521
523 525 527 529 531 533 535 595 596 598-601 603 608
611 616 617 623 626 643 648 650 651 658 940-943
945-961 963-974 976 977 981 982 995 997 999 1001
1003 1005 1007-1009 1072-1103 1105-1116 1118 1119
1121 1123 1125 1127 1129 1131 1133 1135 1137 1139
1141 1143 1145 1147 1149 1151 1153 1169 1171 1173
1175 1177 1179 1181 1183 1185 1187 1189 1191 1193
1195 1197 1199 1201 1203 1205 1207 1209 1211 1213
1215 1218 1220 1224 1228 1233 1235 1237 1239 1241
1243 1245 1247 1249 1251 1253 1255 1257 1259 1263
1265 1267 1269 1273 1377-1414 7681 7683 7685 7687
7689 7691 7693 7695 7697 7699 7701 7703 7705 7707
7709 7711 7713 7715 7717 7719 7721 7723 7725 7727
7729 7731 7733 7735 7737 7739 7741 7743 7745 7747
7749 7751 7753 7755 7757 7759 7761 7763 7765 7767
7769 7771 7773 7775 7777 7779 7781 7783 7785 7787
7789 7791 7793 7795 7797 7799 7801 7803 7805 7807
7809 7811 7813 7815 7817 7819 7821 7823 7825 7827
7829 7841 7843 7845 7847 7849 7851 7853 7855 7857
7859 7861 7863 7865 7867 7869 7871 7873 7875 7877
7879 7881 7883 7885 7887 7889 7891 7893 7895 7897
7899 7901 7903 7905 7907 7909 7911 7913 7915 7917
7919 7921 7923 7925 7927 7929 7936-7943 7952-7957
7968-7975 7984-7991 8000-8005 8017 8019 8021 8023
8032-8039 8048-8061 8064-8071 8080-8087 8096-8103
8112 8113 8115 8131 8144 8145 8160 8161 8165 8179
UCNMSTRT
-- 305 and 383 should be 73 and 83 respectively,
but SGML does not allow a letter to be assigned
to UCNMSTRT --
192-214 216-222 376 256 258 260 262 264 266 268 270
272 274 276 278 280 282 284 286 288 290 292 294 296
298 300 302 305 306 308 310 313 315 317 319 321 323
325 327 330 332 334 336 338 340 342 344 346 348 350
352 354 356 358 360 362 364 366 368 370 372 374 377
379 381 383 386 388 391 395 401 408 416 418 420 423
428 431 435 437 440 444 452 452 455 455 458 458 461
463 465 467 46 9 471 473 475 478 480 482 484 486 488
490 492 494 497 497 500 506 508 510 512 514 516 518
520 522 524 526 528 530 532 534 385 390 393 394 398
399 400 403 404 407 406 412 413 425 430 433 434 439
902 904-906 913-929 931-939 908 910 911 914 920 934
928 994 996 998 1000 1002 1004 1006 922 929
1040-1071 1025-1036 1038 1039 1120 1122 1124 1126
1128 1130 1132 1134 1136 1138 1140 1142 1144 1146
1148 1150 1152 1168 1170 1172 1174 1176 1178 1180
1182 1184 118 6 1188 1190 1192 1194 1196 1198 1200
1202 1204 1206 1208 1210 1212 1214 1217 1219 1223
1227 1232 1234 1236 1238 1240 1242 1244 1246 1248
1250 1252 1254 1256 1258 1262 1264 1266 1268 1272
1329-1366 7680 7682 7684 7686 7688 7690 7692 7694
7696 7698 7700 7702 7704 7706 7708 7710 7712 7714
7716 7718 7720 7722 7724 7726 7728 7730 7732 7734
7736 7738 7740 7742 7744 7746 7748 7750 7752 7754
7756 7758 7760 7762 7764 7766 7768 7770 7772 7774
7776 7778 7780 7782 7784 7786 7788 7790 7792 7794
7796 7798 7800 7802 7804 7806 7808 7810 7812 7814
7816 7818 7820 7822 7824 7826 7828 7840 7842 7844
7846 7848 7850 7852 7854 7856 7858 7860 7862 7864
7866 7868 7870 7872 7874 7876 7878 7880 7882 7884
7886 7888 7890 7892 7894 7896 7898 7900 7902 7904
7906 7908 7910 7912 7914 7916 7918 7920 7922 7924
7926 7928 7944-7951 7960-7965 7976-7983 7992-7999
8008-8013 8025 8027 8029 8031 8040-8047 8122 8123
8136-8139 8154 8155 8184 8185 8170 8171 8186 8187
8072-8079 8088-8095 8104-8111 8120 8121 8124 8140
8152 8153 8168 8169 8172 8188
NAMESTRT
-- The use of uncommon ideographs is deprecated --
":" -- Reserved for namespace experiments "::" --
170 181 186 223 304 312 329 384 397 405 410 411 414
415 422 426 427 442 443 446-451 477 496
688-696 699-705 736-740
768-837 864 865 890 912 944 962 978-980 986 988 990
992 1010 1011 1155-1158 1216 1369 1415 1425-1441
1443-1465 1467-1469 1471 1473 1474 1476 1488-1514
1520-1522 1569-1594 1601-1618 1632-1641 1648-1719
1722-1726 1728-1742 1744-1747 1749-1768 1770-1773
1776-1785 2305-2307 2309-2361 2364-2381 2385-2388
2392-2403 2406-2415 2433-2435
2437-2444 2447 2448 2451-2472 2474-2480 2482
2486-2489 2492 2494-2500 2503 2504 2507-2509 2519
2524 2525 2527-2531 2534-2543 2544 2545 2562 2565-2570
2575 2576 2579-2600 2602-2608 2610 2611 2613 2614 2616
2617 2620 2622-2626 2631 2632 2635-2637 2649-2652
2654 2662-2671 2672-2676 2689-2691 2693-2699 2701
2703-2705 2707-2728 2730-2736 2738 2739 2741-2745
2748-2757 2759-2761 2763-2765 2784 2790-2799 2817-2819
2821-2828 2831 2832 2835-2856 2858-2864 2866 2867
2870-2873 2876-2883 2887 2888 2891-2893 2902 2903
2908 2909 2911-2913 2918-2927 2946 2947 2949-2954
2958-2960 2962-2965 2969 2970 2972 2974 2975 2979
2980 2984-2986
2990-2997 2999-3001 3006-3010 3014-3016 3018-3021
3031 3047-3055 3073-3075 3077-3084 3086-3088 3090-3112
3114-3123 3125-3129 3134-3140 3142-3144 3146-3149
3157 3158 3168 3169 3174-3183 3202 3203 3205-3212
3214-3216 3218-3240 3242-3251 3253-3257 3262-3268
3270-3272 3274-3277 3285 3286 3294 3296 3297 3302-3311
3330 3331 3333-3340 3342-3344 3346-3368 3370-3385
3390-3395 3398-3400 3402-3405 3415 3424 3425 3430-3439
3585-3630 3632-3642 3648-3653 3655-3662 3664-3673
3713 3714 3716 3719
3720 3722 3725 3732-3735 3737-3743 3745-3747 3749
3751 3754 3755 3757 3758 3760-3769 3771-3773
3776-3780 3784-3789 3792-3801 3804 3805 3864 3865
3872-3881 3893 3895
3897 3902-3911 3913-3945 3953-3972 3974-3979
3984-3989 3991 3993-4013 4017-4023 4025 4256-4293
4304-4342 4352-4441 4447-4514 4520-4601 7830-7835
8016 8018 8020 8022 8114 8116 8118 8119 8126 8130
8132 8134 8135 8146 8147 8150 8151 8162-8164 8166
8167 8178 8180 8182 8183 12295 12295 12321-12335
12353-12436 12441 12442 12449-12538 12549-12588
12593-12686 19968-40869 44032-55203
LCNMCHAR
UCNMCHAR
NAMECHAR
-- The use of uncommon punctuation characters is
deprecated --
"." -- Suggestion: properties e.g. "dog.collar" --
"-" -- Suggestion: selectors e.g. "iso8859-1" --
"_" -- Suggestion: spaces e.g. "last_cat" --
183 720 721 1600 3654 3782 8204-8207 12291
12293 12337-12341 12443-12446 12540-12542
NAMECASE
GENERAL YES
ENTITY NO
DELIM
GENERAL SGMLREF
NET "/>"
PIC "?>"
SHORTREF NONE
NAMES
SGMLREF
QUANTITY SGMLREF
-- Quantities are not restricted in XML --
ATTCNT 99999999
ATTSPLEN 99999999
-- BSEQLEN not used --
-- DTAGLEN not used --
-- DTEMPLEN not used --
ENTLVL 99999999
GRPCNT 99999999
GRPGTCNT 99999999
GRPLVL 99999999
LITLEN 99999999
NAMELEN 99999999
-- no need to change NORMSEP --
PILEN 99999999
TAGLEN 99999999
TAGLVL 99999999
FEATURES
MINIMIZE
DATATAG NO
OMITTAG NO
RANK NO
SHORTTAG YES -- SHORTTAG is needed for NET --
LINK
SIMPLE NO
IMPLICIT NO
EXPLICIT NO
OTHER
CONCUR NO
SUBDOC NO
FORMAL NO
APPINFO "SDA ArcBase"
>
Received on Thursday, 3 July 1997 14:06:14 UTC