idnits 2.17.1 draft-faltstrom-unicode12-07.txt: Checking boilerplate required by RFC 5378 and the IETF Trust (see https://trustee.ietf.org/license-info): ---------------------------------------------------------------------------- No issues found here. Checking nits according to https://www.ietf.org/id-info/1id-guidelines.txt: ---------------------------------------------------------------------------- No issues found here. Checking nits according to https://www.ietf.org/id-info/checklist : ---------------------------------------------------------------------------- No issues found here. Miscellaneous warnings: ---------------------------------------------------------------------------- == The copyright year in the IETF Trust and authors Copyright Line does not match the current year -- The document date (February 13, 2022) is 802 days in the past. Is this intentional? Checking references for intended status: Proposed Standard ---------------------------------------------------------------------------- (See RFCs 3967 and 4897 for information about using normative references to lower-maturity documents in RFCs) ** Obsolete normative reference: RFC 3491 (Obsoleted by RFC 5891) -- Obsolete informational reference (is this intentional?): RFC 3454 (Obsoleted by RFC 7564) -- Obsolete informational reference (is this intentional?): RFC 3490 (Obsoleted by RFC 5890, RFC 5891) Summary: 1 error (**), 0 flaws (~~), 1 warning (==), 3 comments (--). Run idnits with the --verbose option for more detailed information about the items above. -------------------------------------------------------------------------------- 2 Network Working Group P. Faltstrom 3 Internet-Draft Netnod 4 Intended status: Standards Track February 13, 2022 5 Expires: August 17, 2022 7 IDNA2008 and Unicode 12.0.0 8 draft-faltstrom-unicode12-07 10 Abstract 12 This document describes the changes between Unicode 6.0.0 and Unicode 13 12.0.0 in the context of IDNA2008. Some additions and changes have 14 been made in the Unicode Standard that affect the values produced by 15 the algorithm IDNA2008 specifies. IDNA2008 allows adding exceptions 16 to the algorithm for backward compatibility; however, this document 17 does not add any such exceptions. This document provides the 18 necessary tables to IANA to make its database consistent with Unicode 19 12.0.0. 21 To improve understanding, this document describes systems that are 22 being used as alternatives to those that conform to IDNA2008. 24 TO BE REMOVED AT TIME OF PUBLICATION AS AN RFC: 26 This document is discussed on the i18n-discuss@ietf.org mailing list 27 of the IETF. 29 Status of This Memo 31 This Internet-Draft is submitted in full conformance with the 32 provisions of BCP 78 and BCP 79. 34 Internet-Drafts are working documents of the Internet Engineering 35 Task Force (IETF). Note that other groups may also distribute 36 working documents as Internet-Drafts. The list of current Internet- 37 Drafts is at https://datatracker.ietf.org/drafts/current/. 39 Internet-Drafts are draft documents valid for a maximum of six months 40 and may be updated, replaced, or obsoleted by other documents at any 41 time. It is inappropriate to use Internet-Drafts as reference 42 material or to cite them other than as "work in progress." 44 This Internet-Draft will expire on August 17, 2022. 46 Copyright Notice 48 Copyright (c) 2022 IETF Trust and the persons identified as the 49 document authors. All rights reserved. 51 This document is subject to BCP 78 and the IETF Trust's Legal 52 Provisions Relating to IETF Documents 53 (https://trustee.ietf.org/license-info) in effect on the date of 54 publication of this document. Please review these documents 55 carefully, as they describe your rights and restrictions with respect 56 to this document. Code Components extracted from this document must 57 include Simplified BSD License text as described in Section 4.e of 58 the Trust Legal Provisions and are provided without warranty as 59 described in the Simplified BSD License. 61 Table of Contents 63 1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 2 64 2. Background . . . . . . . . . . . . . . . . . . . . . . . . . 4 65 2.1. IDNA2008 Documents . . . . . . . . . . . . . . . . . . . 5 66 2.2. Additional important IDNA2008-related documents . . . . . 6 67 2.3. Deployment . . . . . . . . . . . . . . . . . . . . . . . 6 68 3. Notable Changes Between Unicode 6.0.0 and 12.0.0 . . . . . . 7 69 3.1. Changes between Unicode 6.0.0 and 7.0.0 . . . . . . . . . 7 70 3.2. Changes between Unicode 7.0.0 and 10.0.0 . . . . . . . . 8 71 3.3. Changes between Unicode 10.0.0 and 11.0.0 . . . . . . . . 9 72 3.4. Changes between Unicode 11.0.0 and 12.0.0 . . . . . . . . 10 73 4. U+111C9 SHARADA SANDHI MARK . . . . . . . . . . . . . . . . . 11 74 5. Conclusion . . . . . . . . . . . . . . . . . . . . . . . . . 11 75 6. IANA Considerations . . . . . . . . . . . . . . . . . . . . . 11 76 7. Security Considerations . . . . . . . . . . . . . . . . . . . 12 77 8. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . 12 78 9. References . . . . . . . . . . . . . . . . . . . . . . . . . 12 79 9.1. Normative References . . . . . . . . . . . . . . . . . . 12 80 9.2. Non-normative references . . . . . . . . . . . . . . . . 13 81 Appendix A. Changes from Unicode 6.0.0 to Unicode 7.0.0 . . . . 15 82 Appendix B. Changes from Unicode 7.0.0 to Unicode 8.0.0 . . . . 21 83 Appendix C. Changes from Unicode 8.0.0 to Unicode 9.0.0 . . . . 23 84 Appendix D. Changes from Unicode 9.0.0 to Unicode 10.0.0 . . . . 24 85 Appendix E. Changes from Unicode 10.0.0 to Unicode 11.0.0 . . . 26 86 Appendix F. Changes from Unicode 11.0.0 to Unicode 12.0.0 . . . 27 87 Author's Address . . . . . . . . . . . . . . . . . . . . . . . . 29 89 1. Introduction 91 The current version of Internationalized Domain Names for 92 Applications (IDNA) was initiated in 2008, and despite not being 93 completed until 2010, is widely known as "IDNA2008". It is specified 94 in the series of documents listed in Section 2.1. The IDNA2008 95 standard includes an algorithm by which a derived property value is 96 calculated based on the properties defined from the Unicode Standard. 98 The derived property values that can be calculated are defined in RFC 99 5892 [RFC5892]. Below is a summary to aid in the reading of this 100 document. For definition of the terms, please see RFC 5892 101 [RFC5892]. 103 o PROTOCOL VALID: Those that are allowed to be used in IDNs. Code 104 points with this property value are permitted for general use in 105 IDNs. However, that a label consists only of code points that 106 have this property value does not imply that the label can be used 107 in DNS. The abbreviated term PVALID is used to refer to this 108 value. 110 o CONTEXTUAL RULE REQUIRED: Some characteristics of the character, 111 such as it being invisible in certain contexts or problematic in 112 others, require that it not be used in labels unless specific 113 other characters or properties are present. The abbreviated term 114 CONTEXT is used to refer to this value. As explained in RFC 5892 115 [RFC5892] CONTEXT is in turn divided into CONTEXTJ and CONTEXTO. 117 o DISALLOWED: Those that should clearly not be included in IDNs. 118 Code points with this property value are not permitted in IDNs. 120 o UNASSIGNED: Those code points that are not designated (i.e., are 121 unassigned) in the Unicode Standard. 123 When the Unicode Standard is updated, new code points are assigned 124 and already-assigned code points can have their property values 125 changed. 127 o Assigning code points can create problems if the newly-assigned 128 code points are compositions of existing code points and because 129 of that the normalization relationships associated with those code 130 points should have been changed. 132 o Changing properties for already-assigned code points can create 133 problems if the property change results in changes to the derived 134 property value. This might make an earlier allowed code point 135 whose derived property value is PVALID to then not be allowed 136 anymore if its derived property value changes to DISALLOWED. The 137 problem can also happen the other way around: a code point that 138 was not allowed (and thus is prohibited) can suddenly end up being 139 allowed. 141 o Problems can also be created if the properties assigned to those 142 code points are inconsistent with IDNA2008 assumptions about how 143 properties are assigned and/or about how code points with those 144 properties are used or behave. 146 There were three incompatible changes in the Unicode standard between 147 Unicode 5.2.0 [Unicode-5.2.0] and Unicode 6.0.0 [Unicode-6.0.0]; they 148 are described in RFC 6452 [RFC6452]. The code points U+0CF1 and 149 U+0CF2 had a derived property value change from DISALLOWED to PVALID, 150 and the code point U+19DA had a change in derived property value from 151 PVALID to DISALLOWED. These changes where examined in great detail, 152 but the IETF concluded that these changes to the Unicode standard did 153 not warrant an update to RFC 5892 [RFC5892]. 155 As described in Section 3, more incompatible changes have been made 156 to code points between Unicode 6.0.0 and Unicode 12.0.0 157 [Unicode-12.0.0]; however, the changes in the derived property values 158 do not result in exceptions (as defined in section 2.6 of RFC 5892 159 [RFC5892]) being added to RFC 5892 [RFC5892]. 161 Further, in 2015, the Internet Architecture Board (IAB) issued a 162 statement [IAB2005-1] that advised the community to avoid using any 163 of the potentially problematic code points and asked the IETF to 164 resolve the issues related to the code point ARABIC LETTER BEH WITH 165 HAMZA ABOVE (U+08A1) that was introduced in Unicode 7.0.0 166 [Unicode-7.0.0]. In February of that year, the statement was revised 167 [IAB2005-2] to focus on the latter request. More details about the 168 problem of code point sequences not normalizing as one might expect 169 appear in a draft that was part of the discussion [IDNA7]. 171 The result of the work in the IETF was that no exception was added to 172 RFC 5892 [RFC5892]; however, it should be noted that the review of 173 the issues around U+08A1 indicated that this code point is not an 174 isolated case and that a number of long-standing PVALID code points 175 may have similar issues. While the affected code points remain 176 PVALID in this document, identification of the problem resulted in a 177 clarification of the review process for new Unicode versions. That 178 clarification, which reinforces the original review plan to capture 179 issues like these, was published as RFC 8753 [RFC8753]. Any review 180 of Unicode versions after 12.0.0 should be made according to RFC 8753 181 [RFC8753]; an objective of this document is to ensure that a proper 182 review of such versions after version 12.0.0 can be made. 184 2. Background 185 2.1. IDNA2008 Documents 187 IDNA2008 consists of the following documents. The documents in the 188 set have informal names. 190 o Internationalized Domain Names for Applications (IDNA): 191 Definitions and Document Framework [RFC5890], informally called 192 "Defs" or "Definitions", contains definitions and other material 193 that are needed for understanding other documents in the set. 195 o Internationalized Domain Names in Applications (IDNA): Protocol 196 [RFC5891], informally called "Protocol", describes the core 197 IDNA2008 protocol and its operations. It needs to be interpreted 198 in combination with the Bidi document (described below). 200 o The Unicode Code Points and Internationalized Domain Names for 201 Applications (IDNA) [RFC5892], informally called "Tables", lists 202 the categories and rules that identify the code points allowed in 203 a label written in native character form (called a "U-label"), and 204 is based on Unicode 5.2.0 [Unicode-5.2.0] code point assignments 205 and additional rules unique to IDNA2008. The Unicode-based rules 206 in RFC 5892 are expected to be stable across Unicode updates and 207 hence independent of Unicode versions. RFC 5892 [RFC5892] 208 obsoletes RFC 3491 [RFC3491], and in particular the use of the 209 tables to which RFC 3491 [RFC3491] refers. 211 o Right-to-Left Scripts for Internationalized Domain Names for 212 Applications (IDNA) [RFC5893], informally called "Bidi", specifies 213 special rules for labels that contain characters that are written 214 from right to left. 216 o Internationalized Domain Names for Applications (IDNA): 217 Background, Explanation, and Rationale [RFC5894], informally 218 called "Rationale", provides an overview of the protocol and 219 associated tables, and gives explanatory material and some 220 rationale for the decisions that led to IDNA2008. It also 221 contains advice for DNS registry operators and others who use 222 Internationalized Domain Names (IDNs). 224 o Mapping Characters for Internationalized Domain Names in 225 Applications (IDNA) 2008 [RFC5895], informally called "Mapping", 226 discusses the issue of mapping characters into other characters 227 and provides guidance for doing so when that is appropriate. RFC 228 5895 provides advice only and is not a required part of IDNA. 230 2.2. Additional important IDNA2008-related documents 232 There are other documents important for the understanding and 233 functioning of IDNA2008, for example this. 235 o The Unicode Code Points and Internationalized Domain Names for 236 Applications (IDNA) - Unicode 6.0 [RFC6452] describes some changes 237 made to Unicode 6.0.0 [Unicode-6.0.0] that resulted in derived 238 property value change for the code points U+0CF1, U+0CF2 and 239 U+19DA. U+0CF1 and U+0CF2 changed from DISALLOWED to PVALID, 240 while U+19DA changed from PVALID to DISALLOWED. The IETF 241 concluded that no update to RFC 5892 [RFC5892] was needed based on 242 the changes made in Unicode 6.0.0 [Unicode-6.0.0]. As a result, 243 the derived property value remained aligned with the Unicode 244 Standard. Specifically, no exception was added. 246 2.3. Deployment 248 There are many variations on the general IDNA model in use in the 249 various parts of the community. The following lists some of the 250 strategies that implementations that claim to be IDNA compliant are 251 known to use, but it should be noted the list is not complete: 253 o IDNA2003 as specified in RFC 3490 [RFC3490] and RFC 3491 254 [RFC3491]. Those specifications are dependent on case folding and 255 NFKC normalization and on tables that specify for each code point 256 whether it is allowed to be used or not, with a distinction made 257 between use for "stored strings" and "query strings". The tables 258 themselves are dependent on Unicode 3.2 [Unicode-3.2.0]. 260 o A number of variations on IDNA2003, sometimes presented as 261 "updated IDNA2003" or the like, which follow the principles of 262 IDNA2003 as understood by the implementers but that use tables 263 that represent how the implementers believe Stringprep [RFC3454] 264 and Nameprep [RFC3491] would have evolved had the IETF not moved 265 in the direction of IDNA2008 instead. 267 o A mix between IDNA2003 and IDNA2008 where code points assigned to 268 Unicode after Unicode 3.2.0 [Unicode-3.2.0] have derived property 269 value calculated according to the algorithm specified in IDNA2008. 271 o A mix between IDNA2003 and IDNA2008 according to the Unicode 272 Technical Standard #46 [UTS-46]. Because that document specifies 273 different profiles, there are several variations that leave users 274 with no guarantee that two applications claiming conformance to 275 UTS#46 will interoperate well with each other much less with 276 conforming IDNA2008 implementations. UTS#46 is ultimately based 277 on a normative table very much like the one used by Stringprep 278 [RFC3454] but updated for each new version of Unicode. 280 o The (normative) IDNA2008 algorithm applied to whatever version of 281 Unicode Standard exists in the operating system and/or libraries 282 used, independent of whatever version of tables appears in the 283 (non-normative) IANA database. 285 In practice, the Unicode Consortium creates a maximum set of code 286 points by assigning code points in the Unicode Standard. The 287 IDNA2008 rules use the Unicode Standard to create a further subset of 288 code points and context that are permitted in DNS labels associated 289 with its PVALID, and CONTEXT (CONTEXTJ or CONTEXTO) derived property 290 values. DNS registries and other organizations that deal with IDNs 291 are supposed to create their own subsets from IDNA2008 for use by 292 those registries and organizations. 294 This progressive subsetting and narrowing of the repertoire of code 295 points that can be used in labels is an implementation of the 296 principles of being conservative when deciding what code points to 297 include in such a subset. SAC-084 [SAC-084] and RFC 6912 [RFC6912] 298 recommend to DNS registries and other organizations to be 299 conservative when creating their subsets, and to use the principle of 300 creating subsets by inclusion. 302 See also the Security Considerations section in this document. 304 3. Notable Changes Between Unicode 6.0.0 and 12.0.0 306 Among the changes between the Unicode versions, most code points that 307 change derived property value change from UNASSIGNED to PVALID or 308 from UNASSIGNED to DISALLOWED. The interesting changes in derived 309 property values include other changes. All changes between the major 310 versions of Unicode can be found in Appendix A (6.0.0-7.0.0), 311 Appendix B (7.0.0-8.0.0), Appendix C (8.0.0-9.0.0), Appendix D 312 (9.0.0-10.0.0), Appendix E (10.0.0-11.0.0) and Appendix F 313 (11.0.0-12.0.0). 315 3.1. Changes between Unicode 6.0.0 and 7.0.0 317 Change in number of characters in each category: 319 PVALID changed from 97418 to 99867 (+2449) 321 UNASSIGNED changed from 865081 to 861509 (-3572) 323 CONTEXTJ did not change, at 2 324 CONTEXTO did not change, at 25 326 DISALLOWED changed from 151586 to 152709 (+1123) 328 TOTAL did not change, at 1114112 330 There are no changes made to Unicode between version 6.0.0 and 331 7.0.0 that impact IDNA2008 calculation of the derived property 332 values. 334 The code points U+17B4 KHMER VOWEL INHERENT AQ and U+17B5 KHMER VOWEL 335 INHERENT AA both changed the general category from Cf (Format) to Mn 336 (Nonspacing_Mark), but that did not impact the calculation of the 337 derived property value which stayed at DISALLOWED. 339 The character ARABIC LETTER BEH WITH HAMZA ABOVE (U+08A1) was 340 introduced in Unicode 7.0.0. This was discussed extensively in the 341 IETF, and by the IAB in their statement [IAB2005-1] requesting the 342 IETF to investigate the issue. Specifically, the IAB stated: 344 On the same precautionary principle, the IAB recommends that the 345 Internationalized Domain Names for Applications (IDNA) Parameters 346 registry not be 347 updated to Unicode 7.0.0 until the IETF has consensus on a 348 solution to this problem. 350 The discussion in the IETF concluded that although it is possible to 351 create "the same" character in multiple ways, the issue with U+08A1 352 is not unique. The character U+08A1 (ARABIC LETTER BEH WITH HAMZA 353 ABOVE) can be represented with the sequence ARABIC LETTER BEH 354 (U+0628) and ARABIC HAMZA ABOVE (U+0654). This identical to LATIN 355 SMALL LETTER O WITH STROKE (U+00F8), which can be represented with 356 the sequence LATIN SMALL LETTER O (U+006F) followed by COMBINING 357 SHORT SOLIDUS OVERLAY (U+0337). 359 Although the discussion about this specific code point resulted in 360 acceptance of the derived property value of PVALID, the underlying 361 problem with combining sequences is not understood fully. Therefore, 362 it cannot be claimed that this case can be extrapolated to other 363 situations and other code points. 365 3.2. Changes between Unicode 7.0.0 and 10.0.0 367 Change in number of characters in each category: 369 Code points that changed derived property value: 0 371 PVALID changed from 99867 to 122411 (+22544) 372 UNASSIGNED changed from 861509 to 837775 (-23734) 374 CONTEXTJ did not change, at 2 376 CONTEXTO did not change, at 25 378 DISALLOWED changed from 152709 to 153899 (+1190) 380 TOTAL did not change, at 1114112 382 There are no changes made to Unicode between version 7.0.0 and 383 10.0.0 that impact IDNA2008 calculation of the derived property 384 values. 386 3.3. Changes between Unicode 10.0.0 and 11.0.0 388 Change in number of characters in each category: 390 Code points that changed derived property value: 1 392 PVALID changed from 122411 to 122734 (+323) 394 UNASSIGNED changed from 837775 to 837091 (-684) 396 CONTEXTJ did not change, at 2 398 CONTEXTO did not change, at 25 400 DISALLOWED changed from 153899 to 154260 (+361) 402 TOTAL did not change, at 1114112 404 Georgian letters in the ranges U+10D0..U+10FA and U+10FD..U+10FF 405 had their General Properties changed from Lo to Ll, to reflect 406 their status as the lowercase of new Georgian case pairs. Case 407 mappings were also added. 409 SHARADA SANDHI MARK (U+111C9) was changed from Po to Mn, and from 410 bc=L to bc=NSM. 412 The properties for ZANABAZAR SQUARE VOWEL SIGN AI (U+11A07) and 413 ZANABZAR SQUARE VOWEL SIGN AU (U+11A08) were corrected from Mc to 414 Mn. 416 SPHERICAL ANGLE OPENING UP (U+29A1) was changed to Bidi_M=N. 418 These changes to the Unicode Standard have the following implications 419 for these code points: 421 o The newly assigned 684 characters are assigned a derived property 422 value as of a result of applying the IDNA2008 algorithm. 424 o The Georgian letters in the ranges U+10D0..U+10FA and 425 U+10FD..U+10FF existed before IDNA2008 was created. Applying the 426 IDNA2008 algorithm to the code points assigned the derived 427 property value PVALID, and that value is unchanged even if the 428 underlying Unicode properties have changed. The newly encoded 429 Mtavruli letters have general category "Lu" and are therefore 430 DISALLOWED. 432 o The U+111C9 SHARADA SANDHI MARK was added to Unicode 8.0.0 433 [Unicode-8.0.0]. Applying the IDNA2008 algorithm to the code 434 point assigned the derived property value DISALLOWED. The changes 435 in the underlying properties in the Unicode Standard Version 436 11.0.0 [Unicode-11.0.0] caused the derived property value to 437 change to PVALID. 439 o The characters ZANABAZAR SQUARE VOWEL SIGN AI (U+11A07) and 440 ZANABZAR SQUARE VOWEL SIGN AU (U+11A08) were added to Unicode 441 10.0.0 [Unicode-10.0.0]. Applying the IDNA2008 algorithm to the 442 code points assigned the derived property value PVALID, and that 443 value is unchanged even if the underlying Unicode properties have 444 changed. 446 o SPHERICAL ANGLE OPENING UP (U+29A1) existed before IDNA2008 was 447 created. Applying the IDNA2008 algorithm to the code point 448 assigned the derived property value DISALLOWED, and that value is 449 unchanged even if the underlying Unicode properties have changed. 451 3.4. Changes between Unicode 11.0.0 and 12.0.0 453 Change in number of characters in each category: 455 Code points that changed derived property value: 0 457 PVALID changed from 122734 to 123006 (+272) 459 UNASSIGNED changed from 837091 to 836537 (-554) 461 CONTEXTJ did not change, at 2 463 CONTEXTO did not change, at 25 465 DISALLOWED changed from 154260 to 154542 (+282) 467 TOTAL did not change, at 1114112 469 4. U+111C9 SHARADA SANDHI MARK 471 As one can see in Section 3, an incompatible property change was made 472 between Unicode 6.0.0 and 12.0.0, affecting the code point U+111C9. 473 Its derived property value thus changed from DISALLOWED to PVALID. 474 In situations like these, IDNA2008 allow for addition of rules to RFC 475 5892 [RFC5892] section 2.7. If the code point is accepted, it might 476 still be rejected if validated by software based on older versions of 477 Unicode than 12.0.0. As the character is rarely used outside the 478 group of Sharada specialists, and used in some records for indicating 479 sandhi breaks, the conclusion is that it could either be added as an 480 exception or allowed to change its property value, as the use of the 481 code point is limited outside a special community. As including an 482 exception would require implementation changes in deployed 483 implementations of IDNA20008, the IETF has decided to not add a 484 BackwardCompatible rule to IDNA2008 (i.e. Section 2.7 of RFC 5892 485 [RFC5892] for this code point. This also ensures all sandhi marks 486 being treated in an equal way. 488 5. Conclusion 490 As described in Section 3 and Section 4, changes have been made to 491 Unicode between version 6.0.0 and 12.0.0. Some changes to specific 492 characters changed their derived property value, whereas other 493 changes did not. Given the deployment considerations described in 494 Section 2.3 and changes in the Unicode Standard described in 495 Section 3 and Section 4, including implications to normalization, the 496 conclusion is to not add any exception rules to IDNA2008. 498 This document addresses only changes to Unicode between version 6.0.0 499 and version 12.0.0. Changes in future Unicode versions might result 500 in the conclusion that exception rules need to be added to IDNA2008 501 after the review process explained in RFC 8753 [RFC8753]. Separately 502 from any changes in Unicode, the IETF might conclude that updates to 503 RFC 5892 [RFC5892] or other IDNA2008 documents might become 504 necessary; such updates might include changes to the algorithm 505 specified in IDNA2008 as well as additional rules, categories, or 506 other forms of tuning, like the clarifications in RFC 8753 [RFC8753]. 508 6. IANA Considerations 510 IANA is requested to update the IDNA Parameters registry [IANA-IDNA] 511 of derived property values, after the expert reviewer validates that 512 the derived property values are calculated correctly. 514 7. Security Considerations 516 This document makes recommendations regarding the use of the IDNA2008 517 algorithm for calculation of derived property values, based on 518 Unicode version 12.0.0. This recommendation does not say anything 519 about what recommendations to make for future versions of the Unicode 520 Standard. 522 Not following these recommendations can lead to various security 523 issues. Specifically, allowing confusable characters may lead to 524 various phishing attacks, as described in the Security Consideration 525 Sections in the documents listed in Section 2.1. 527 8. Acknowledgements 529 Thanks to Harald Alvestrand, Marc Blanchet, Martin Duerst, Asmus 530 Freytag, Ted Hardie, John Klensin, Erik Nordmark, Pete Resnick, Peter 531 Saint-Andre, Michel Suignard, Andrew Sullivan and Suzanne Woolf for 532 input to this document. 534 9. References 536 9.1. Normative References 538 [RFC3491] Hoffman, P. and M. Blanchet, "Nameprep: A Stringprep 539 Profile for Internationalized Domain Names (IDN)", 540 RFC 3491, DOI 10.17487/RFC3491, March 2003, 541 . 543 [RFC5890] Klensin, J., "Internationalized Domain Names for 544 Applications (IDNA): Definitions and Document Framework", 545 RFC 5890, DOI 10.17487/RFC5890, August 2010, 546 . 548 [RFC5891] Klensin, J., "Internationalized Domain Names in 549 Applications (IDNA): Protocol", RFC 5891, 550 DOI 10.17487/RFC5891, August 2010, 551 . 553 [RFC5892] Faltstrom, P., Ed., "The Unicode Code Points and 554 Internationalized Domain Names for Applications (IDNA)", 555 RFC 5892, DOI 10.17487/RFC5892, August 2010, 556 . 558 [RFC5893] Alvestrand, H., Ed. and C. Karp, "Right-to-Left Scripts 559 for Internationalized Domain Names for Applications 560 (IDNA)", RFC 5893, DOI 10.17487/RFC5893, August 2010, 561 . 563 [RFC6452] Faltstrom, P., Ed. and P. Hoffman, Ed., "The Unicode Code 564 Points and Internationalized Domain Names for Applications 565 (IDNA) - Unicode 6.0", RFC 6452, DOI 10.17487/RFC6452, 566 November 2011, . 568 9.2. Non-normative references 570 [IAB2005-1] 571 Internet Architecture Board, "IAB Statement on Identifiers 572 and Unicode 7.0.0", IAB Statement on Identifiers and 573 Unicode 7.0.0 574 , January 2015. 578 [IAB2005-2] 579 Internet Architecture Board, "IAB Statement on Identifiers 580 and Unicode 7.0.0", IAB Statement on Identifiers and 581 Unicode 7.0.0 582 , February 2015. 586 [IANA-IDNA] 587 IANA, "IDNA Rules and Derived Property Values", IDNA Rules 588 and Derived Property Values 589 , April 2020. 592 [IDNA7] Klensin, J. and P. Faltstrom, "IDNA Update for Unicode 7.0 593 and Later Versions", draft-klensin-idna-5892upd-unicode70 594 , October 2017. 597 [RFC3454] Hoffman, P. and M. Blanchet, "Preparation of 598 Internationalized Strings ("stringprep")", RFC 3454, 599 DOI 10.17487/RFC3454, December 2002, 600 . 602 [RFC3490] Faltstrom, P., Hoffman, P., and A. Costello, 603 "Internationalizing Domain Names in Applications (IDNA)", 604 RFC 3490, DOI 10.17487/RFC3490, March 2003, 605 . 607 [RFC5894] Klensin, J., "Internationalized Domain Names for 608 Applications (IDNA): Background, Explanation, and 609 Rationale", RFC 5894, DOI 10.17487/RFC5894, August 2010, 610 . 612 [RFC5895] Resnick, P. and P. Hoffman, "Mapping Characters for 613 Internationalized Domain Names in Applications (IDNA) 614 2008", RFC 5895, DOI 10.17487/RFC5895, September 2010, 615 . 617 [RFC6912] Sullivan, A., Thaler, D., Klensin, J., and O. Kolkman, 618 "Principles for Unicode Code Point Inclusion in Labels in 619 the DNS", RFC 6912, DOI 10.17487/RFC6912, April 2013, 620 . 622 [RFC8753] Klensin, J. and P. Faeltstroem, "Internationalized Domain 623 Names for Applications (IDNA) Review for New Unicode 624 Versions", RFC 8753, DOI 10.17487/RFC8753, April 2020, 625 . 627 [SAC-084] The Security and Stability Advisory Committee, "SAC084", 628 SSAC Comments on Guidelines for the Extended Process 629 Similarity Review Panel for the IDN ccTLD Fast Track 630 Process , August 2016. 633 [Unicode-3.2.0] 634 The Unicode Consortium, "The Unicode Standard, Version 635 3.2.0", The Unicode Standard, Version 3.2.0 ISBN 636 0-201-61633-5, March 2002. 638 [Unicode-5.2.0] 639 The Unicode Consortium, "The Unicode Standard, Version 640 5.2.0", The Unicode Standard, Version 5.2.0 ISBN 641 978-1-936213-00-9, October 2009. 643 [Unicode-6.0.0] 644 The Unicode Consortium, "The Unicode Standard, Version 645 6.0.0", The Unicode Standard, Version 6.0.0 ISBN 646 978-1-936213-01-6, October 2011. 648 [Unicode-7.0.0] 649 The Unicode Consortium, "The Unicode Standard, Version 650 7.0.0", The Unicode Standard, Version 7.0.0 ISBN 651 978-1-936213-09-2, June 2014. 653 [Unicode-8.0.0] 654 The Unicode Consortium, "The Unicode Standard, Version 655 8.0.0", The Unicode Standard, Version 8.0.0 ISBN 656 978-1-936213-10-8, June 2015. 658 [Unicode-10.0.0] 659 The Unicode Consortium, "The Unicode Standard, Version 660 10.0.0", The Unicode Standard, Version 10.0.0 ISBN 661 978-1-936213-16-0, June 2017. 663 [Unicode-11.0.0] 664 The Unicode Consortium, "The Unicode Standard, Version 665 11.0.0", The Unicode Standard, Version 11.0.0 ISBN 666 978-1-936213-19-1, June 2018. 668 [Unicode-12.0.0] 669 The Unicode Consortium, "The Unicode Standard, Version 670 12.0.0", The Unicode Standard, Version 12.0.0 ISBN 671 978-1-936213-22-1, March 2019. 673 [UTS-46] The Unicode Consortium, "Unicode Technical Standard #46, 674 Version 12.0.0", UNICODE IDNA COMPATIBILITY 675 PROCESSING , March 676 2019. 678 Appendix A. Changes from Unicode 6.0.0 to Unicode 7.0.0 680 Changes from derived property value UNASSIGNED to either PVALID or 681 DISALLOWED. 683 037F ; DISALLOWED # GREEK CAPITAL LETTER YOT 684 0528 ; DISALLOWED # CYRILLIC CAPITAL LETTER EN WITH LEFT HOOK 685 0529 ; PVALID # CYRILLIC SMALL LETTER EN WITH LEFT HOOK 686 052A ; DISALLOWED # CYRILLIC CAPITAL LETTER DZZHE 687 052B ; PVALID # CYRILLIC SMALL LETTER DZZHE 688 052C ; DISALLOWED # CYRILLIC CAPITAL LETTER DCHE 689 052D ; PVALID # CYRILLIC SMALL LETTER DCHE 690 052E ; DISALLOWED # CYRILLIC CAPITAL LETTER EL WITH DESCENDER 691 052F ; PVALID # CYRILLIC SMALL LETTER EL WITH DESCENDER 692 058D..058F ; DISALLOWED # RIGHT-FACING ARMENIAN ETERNITY SIGN..ARMENIAN 693 0604..0605 ; DISALLOWED # ARABIC SIGN SAMVAT..ARABIC NUMBER MARK ABOVE 694 061C ; DISALLOWED # ARABIC LETTER MARK 695 08A0..08B2 ; PVALID # ARABIC LETTER BEH WITH SMALL V BELOW..ARABIC 696 08E4..08FF ; PVALID # ARABIC CURLY FATHA..ARABIC MARK SIDEWAYS NOON 697 0978 ; PVALID # DEVANAGARI LETTER MARWARI DDA 698 0980 ; PVALID # BENGALI ANJI 699 0AF0 ; DISALLOWED # GUJARATI ABBREVIATION SIGN 700 0C00 ; PVALID # TELUGU SIGN COMBINING CANDRABINDU ABOVE 701 0C34 ; PVALID # TELUGU LETTER LLLA 702 0C81 ; PVALID # KANNADA SIGN CANDRABINDU 703 0D01 ; PVALID # MALAYALAM SIGN CANDRABINDU 704 0DE6..0DEF ; PVALID # SINHALA LITH DIGIT ZERO..SINHALA LITH DIGIT N 705 0EDE..0EDF ; PVALID # LAO LETTER KHMU GO..LAO LETTER KHMU NYO 706 10C7 ; DISALLOWED # GEORGIAN CAPITAL LETTER YN 707 10CD ; DISALLOWED # GEORGIAN CAPITAL LETTER AEN 708 10FD..10FF ; PVALID # GEORGIAN LETTER AEN..GEORGIAN LETTER LABIAL S 709 16F1..16F8 ; PVALID # RUNIC LETTER K..RUNIC LETTER FRANKS CASKET AE 710 17B4..17B5 ; DISALLOWED # KHMER VOWEL INHERENT AQ..KHMER VOWEL INHERENT 711 191D..191E ; PVALID # LIMBU LETTER GYAN..LIMBU LETTER TRA 712 1AB0..1ABD ; PVALID # COMBINING DOUBLED CIRCUMFLEX ACCENT..COMBININ 713 1ABE ; DISALLOWED # COMBINING PARENTHESES OVERLAY 714 1BAB..1BAD ; PVALID # SUNDANESE SIGN VIRAMA..SUNDANESE CONSONANT SI 715 1BBA..1BBF ; PVALID # SUNDANESE AVAGRAHA..SUNDANESE LETTER FINAL M 716 1CC0..1CC7 ; DISALLOWED # SUNDANESE PUNCTUATION BINDU SURYA..SUNDANESE 717 1CF3..1CF6 ; PVALID # VEDIC SIGN ROTATED ARDHAVISARGA..VEDIC SIGN U 718 1CF8..1CF9 ; PVALID # VEDIC TONE RING ABOVE..VEDIC TONE DOUBLE RING 719 1DE7..1DF5 ; PVALID # COMBINING LATIN SMALL LETTER ALPHA..COMBINING 720 2066..2069 ; DISALLOWED # LEFT-TO-RIGHT ISOLATE..POP DIRECTIONAL ISOLAT 721 20BA..20BD ; DISALLOWED # TURKISH LIRA SIGN..RUBLE SIGN 722 23F4..23FA ; DISALLOWED # BLACK MEDIUM LEFT-POINTING TRIANGLE..BLACK CI 723 2700 ; DISALLOWED # BLACK SAFETY SCISSORS 724 27CB ; DISALLOWED # MATHEMATICAL RISING DIAGONAL 725 27CD ; DISALLOWED # MATHEMATICAL FALLING DIAGONAL 726 2B4D..2B4F ; DISALLOWED # DOWNWARDS TRIANGLE-HEADED ZIGZAG ARROW..SHORT 727 2B5A..2B73 ; DISALLOWED # SLANTED NORTH ARROW WITH HOOKED HEAD..DOWNWAR 728 2B76..2B95 ; DISALLOWED # NORTH WEST TRIANGLE-HEADED ARROW TO BAR..RIGH 729 2B98..2BB9 ; DISALLOWED # THREE-D TOP-LIGHTED LEFTWARDS EQUILATERAL ARR 730 2BBD..2BC8 ; DISALLOWED # BALLOT BOX WITH LIGHT X..BLACK MEDIUM RIGHT-P 731 2BCA..2BD1 ; DISALLOWED # TOP HALF BLACK CIRCLE..UNCERTAINTY SIGN 732 2CF2 ; DISALLOWED # COPTIC CAPITAL LETTER BOHAIRIC KHEI 733 2CF3 ; PVALID # COPTIC SMALL LETTER BOHAIRIC KHEI 734 2D27 ; PVALID # GEORGIAN SMALL LETTER YN 735 2D2D ; PVALID # GEORGIAN SMALL LETTER AEN 736 2D66..2D67 ; PVALID # TIFINAGH LETTER YE..TIFINAGH LETTER YO 737 2E32..2E42 ; DISALLOWED # TURNED COMMA..DOUBLE LOW-REVERSED-9 QUOTATION 738 9FCC ; PVALID # 739 A674..A67B ; PVALID # COMBINING CYRILLIC LETTER UKRAINIAN IE..COMBI 740 A698 ; DISALLOWED # CYRILLIC CAPITAL LETTER DOUBLE O 741 A699 ; PVALID # CYRILLIC SMALL LETTER DOUBLE O 742 A69A ; DISALLOWED # CYRILLIC CAPITAL LETTER CROSSED O 743 A69B ; PVALID # CYRILLIC SMALL LETTER CROSSED O 744 A69C..A69D ; DISALLOWED # MODIFIER LETTER CYRILLIC HARD SIGN..MODIFIER 745 A69F ; PVALID # COMBINING CYRILLIC LETTER IOTIFIED E 746 A792 ; DISALLOWED # LATIN CAPITAL LETTER C WITH BAR 747 A793..A795 ; PVALID # LATIN SMALL LETTER C WITH BAR..LATIN SMALL LE 748 A796 ; DISALLOWED # LATIN CAPITAL LETTER B WITH FLOURISH 749 A797 ; PVALID # LATIN SMALL LETTER B WITH FLOURISH 750 A798 ; DISALLOWED # LATIN CAPITAL LETTER F WITH STROKE 751 A799 ; PVALID # LATIN SMALL LETTER F WITH STROKE 752 A79A ; DISALLOWED # LATIN CAPITAL LETTER VOLAPUK AE 753 A79B ; PVALID # LATIN SMALL LETTER VOLAPUK AE 754 A79C ; DISALLOWED # LATIN CAPITAL LETTER VOLAPUK OE 755 A79D ; PVALID # LATIN SMALL LETTER VOLAPUK OE 756 A79E ; DISALLOWED # LATIN CAPITAL LETTER VOLAPUK UE 757 A79F ; PVALID # LATIN SMALL LETTER VOLAPUK UE 758 A7AA..A7AD ; DISALLOWED # LATIN CAPITAL LETTER H WITH HOOK..LATIN CAPIT 759 A7B0..A7B1 ; DISALLOWED # LATIN CAPITAL LETTER TURNED K..LATIN CAPITAL 760 A7F7 ; PVALID # LATIN EPIGRAPHIC LETTER SIDEWAYS I 761 A7F8..A7F9 ; DISALLOWED # MODIFIER LETTER CAPITAL H WITH STROKE..MODIFI 762 A9E0..A9FE ; PVALID # MYANMAR LETTER SHAN GHA..MYANMAR LETTER TAI L 763 AA7C..AA7F ; PVALID # MYANMAR SIGN TAI LAING TONE-2..MYANMAR LETTER 764 AAE0..AAEF ; PVALID # MEETEI MAYEK LETTER E..MEETEI MAYEK VOWEL SIG 765 AAF0..AAF1 ; DISALLOWED # MEETEI MAYEK CHEIKHAN..MEETEI MAYEK AHANG KHU 766 AAF2..AAF6 ; PVALID # MEETEI MAYEK ANJI..MEETEI MAYEK VIRAMA 767 AB30..AB5A ; PVALID # LATIN SMALL LETTER BARRED ALPHA..LATIN SMALL 768 AB5B..AB5F ; DISALLOWED # MODIFIER BREVE WITH INVERTED BREVE..MODIFIER 769 AB64..AB65 ; PVALID # LATIN SMALL LETTER INVERTED ALPHA..GREEK LETT 770 FA2E..FA2F ; DISALLOWED # CJK COMPATIBILITY IDEOGRAPH-FA2E..CJK COMPATI 771 FE27..FE2D ; PVALID # COMBINING LIGATURE LEFT HALF BELOW..COMBINING 772 1018B..1018C; DISALLOWED # GREEK ONE QUARTER SIGN..GREEK SINUSOID SIGN 773 101A0 ; DISALLOWED # GREEK SYMBOL TAU RHO 774 102E0 ; PVALID # COPTIC EPACT THOUSANDS MARK 775 102E1..102FB; DISALLOWED # COPTIC EPACT DIGIT ONE..COPTIC EPACT NUMBER N 776 1031F ; PVALID # OLD ITALIC LETTER ESS 777 10350..1037A; PVALID # OLD PERMIC LETTER AN..COMBINING OLD PERMIC LE 778 10500..10527; PVALID # ELBASAN LETTER A..ELBASAN LETTER KHE 779 10530..10563; PVALID # CAUCASIAN ALBANIAN LETTER ALT..CAUCASIAN ALBA 780 1056F ; DISALLOWED # CAUCASIAN ALBANIAN CITATION MARK 781 10600..10736; PVALID # LINEAR A SIGN AB001..LINEAR A SIGN A664 782 10740..10755; PVALID # LINEAR A SIGN A701 A..LINEAR A SIGN A732 JE 783 10760..10767; PVALID # LINEAR A SIGN A800..LINEAR A SIGN A807 784 10860..10876; PVALID # PALMYRENE LETTER ALEPH..PALMYRENE LETTER TAW 785 10877..1087F; DISALLOWED # PALMYRENE LEFT-POINTING FLEURON..PALMYRENE NU 786 10880..1089E; PVALID # NABATAEAN LETTER FINAL ALEPH..NABATAEAN LETTE 787 108A7..108AF; DISALLOWED # NABATAEAN NUMBER ONE..NABATAEAN NUMBER ONE HU 788 10980..109B7; PVALID # MEROITIC HIEROGLYPHIC LETTER A..MEROITIC CURS 789 109BE..109BF; PVALID # MEROITIC CURSIVE LOGOGRAM RMT..MEROITIC CURSI 790 10A80..10A9C; PVALID # OLD NORTH ARABIAN LETTER HEH..OLD NORTH ARABI 791 10A9D..10A9F; DISALLOWED # OLD NORTH ARABIAN NUMBER ONE..OLD NORTH ARABI 792 10AC0..10AC7; PVALID # MANICHAEAN LETTER ALEPH..MANICHAEAN LETTER WA 793 10AC8 ; DISALLOWED # MANICHAEAN SIGN UD 794 10AC9..10AE6; PVALID # MANICHAEAN LETTER ZAYIN..MANICHAEAN ABBREVIAT 795 10AEB..10AF6; DISALLOWED # MANICHAEAN NUMBER ONE..MANICHAEAN PUNCTUATION 796 10B80..10B91; PVALID # PSALTER PAHLAVI LETTER ALEPH..PSALTER PAHLAVI 797 10B99..10B9C; DISALLOWED # PSALTER PAHLAVI SECTION MARK..PSALTER PAHLAVI 798 10BA9..10BAF; DISALLOWED # PSALTER PAHLAVI NUMBER ONE..PSALTER PAHLAVI N 799 1107F ; PVALID # BRAHMI NUMBER JOINER 800 110D0..110E8; PVALID # SORA SOMPENG LETTER SAH..SORA SOMPENG LETTER 801 110F0..110F9; PVALID # SORA SOMPENG DIGIT ZERO..SORA SOMPENG DIGIT N 802 11100..11134; PVALID # CHAKMA SIGN CANDRABINDU..CHAKMA MAAYYAA 803 11136..1113F; PVALID # CHAKMA DIGIT ZERO..CHAKMA DIGIT NINE 804 11140..11143; DISALLOWED # CHAKMA SECTION MARK..CHAKMA QUESTION MARK 805 11150..11173; PVALID # MAHAJANI LETTER A..MAHAJANI SIGN NUKTA 806 11174..11175; DISALLOWED # MAHAJANI ABBREVIATION SIGN..MAHAJANI SECTION 807 11176 ; PVALID # MAHAJANI LIGATURE SHRI 808 11180..111C4; PVALID # SHARADA SIGN CANDRABINDU..SHARADA OM 809 111C5..111C8; DISALLOWED # SHARADA DANDA..SHARADA SEPARATOR 810 111CD ; DISALLOWED # SHARADA SUTRA MARK 811 111D0..111DA; PVALID # SHARADA DIGIT ZERO..SHARADA EKAM 812 111E1..111F4; DISALLOWED # SINHALA ARCHAIC DIGIT ONE..SINHALA ARCHAIC NU 813 11200..11211; PVALID # KHOJKI LETTER A..KHOJKI LETTER JJA 814 11213..11237; PVALID # KHOJKI LETTER NYA..KHOJKI SIGN SHADDA 815 11238..1123D; DISALLOWED # KHOJKI DANDA..KHOJKI ABBREVIATION SIGN 816 112B0..112EA; PVALID # KHUDAWADI LETTER A..KHUDAWADI SIGN VIRAMA 817 112F0..112F9; PVALID # KHUDAWADI DIGIT ZERO..KHUDAWADI DIGIT NINE 818 11301..11303; PVALID # GRANTHA SIGN CANDRABINDU..GRANTHA SIGN VISARG 819 11305..1130C; PVALID # GRANTHA LETTER A..GRANTHA LETTER VOCALIC L 820 1130F..11310; PVALID # GRANTHA LETTER EE..GRANTHA LETTER AI 821 11313..11328; PVALID # GRANTHA LETTER OO..GRANTHA LETTER NA 822 1132A..11330; PVALID # GRANTHA LETTER PA..GRANTHA LETTER RA 823 11332..11333; PVALID # GRANTHA LETTER LA..GRANTHA LETTER LLA 824 11335..11339; PVALID # GRANTHA LETTER VA..GRANTHA LETTER HA 825 1133C..11344; PVALID # GRANTHA SIGN NUKTA..GRANTHA VOWEL SIGN VOCALI 826 11347..11348; PVALID # GRANTHA VOWEL SIGN EE..GRANTHA VOWEL SIGN AI 827 1134B..1134D; PVALID # GRANTHA VOWEL SIGN OO..GRANTHA SIGN VIRAMA 828 11357 ; PVALID # GRANTHA AU LENGTH MARK 829 1135D..11363; PVALID # GRANTHA SIGN PLUTA..GRANTHA VOWEL SIGN VOCALI 830 11366..1136C; PVALID # COMBINING GRANTHA DIGIT ZERO..COMBINING GRANT 831 11370..11374; PVALID # COMBINING GRANTHA LETTER A..COMBINING GRANTHA 832 11480..114C5; PVALID # TIRHUTA ANJI..TIRHUTA GVANG 833 114C6 ; DISALLOWED # TIRHUTA ABBREVIATION SIGN 834 114C7 ; PVALID # TIRHUTA OM 835 114D0..114D9; PVALID # TIRHUTA DIGIT ZERO..TIRHUTA DIGIT NINE 836 11580..115B5; PVALID # SIDDHAM LETTER A..SIDDHAM VOWEL SIGN VOCALIC 837 115B8..115C0; PVALID # SIDDHAM VOWEL SIGN E..SIDDHAM SIGN NUKTA 838 115C1..115C9; DISALLOWED # SIDDHAM SIGN SIDDHAM..SIDDHAM END OF TEXT MAR 839 11600..11640; PVALID # MODI LETTER A..MODI SIGN ARDHACANDRA 840 11641..11643; DISALLOWED # MODI DANDA..MODI ABBREVIATION SIGN 841 11644 ; PVALID # MODI SIGN HUVA 842 11650..11659; PVALID # MODI DIGIT ZERO..MODI DIGIT NINE 843 11680..116B7; PVALID # TAKRI LETTER A..TAKRI SIGN NUKTA 844 116C0..116C9; PVALID # TAKRI DIGIT ZERO..TAKRI DIGIT NINE 845 118A0..118BF; DISALLOWED # WARANG CITI CAPITAL LETTER NGAA..WARANG CITI 846 118C0..118E9; PVALID # WARANG CITI SMALL LETTER NGAA..WARANG CITI DI 847 118EA..118F2; DISALLOWED # WARANG CITI NUMBER TEN..WARANG CITI NUMBER NI 848 118FF ; PVALID # WARANG CITI OM 849 11AC0..11AF8; PVALID # PAU CIN HAU LETTER PA..PAU CIN HAU GLOTTAL ST 850 1236F..12398; PVALID # CUNEIFORM SIGN KAP ELAMITE..CUNEIFORM SIGN UM 851 12463..1246E; DISALLOWED # CUNEIFORM NUMERIC SIGN ONE QUARTER GUR..CUNEI 852 12474 ; DISALLOWED # CUNEIFORM PUNCTUATION SIGN DIAGONAL QUADCOLON 853 16A40..16A5E; PVALID # MRO LETTER TA..MRO LETTER TEK 854 16A60..16A69; PVALID # MRO DIGIT ZERO..MRO DIGIT NINE 855 16A6E..16A6F; DISALLOWED # MRO DANDA..MRO DOUBLE DANDA 856 16AD0..16AED; PVALID # BASSA VAH LETTER ENNI..BASSA VAH LETTER I 857 16AF0..16AF4; PVALID # BASSA VAH COMBINING HIGH TONE..BASSA VAH COMB 858 16AF5 ; DISALLOWED # BASSA VAH FULL STOP 859 16B00..16B36; PVALID # PAHAWH HMONG VOWEL KEEB..PAHAWH HMONG MARK CI 860 16B37..16B3F; DISALLOWED # PAHAWH HMONG SIGN VOS THOM..PAHAWH HMONG SIGN 861 16B40..16B43; PVALID # PAHAWH HMONG SIGN VOS SEEV..PAHAWH HMONG SIGN 862 16B44..16B45; DISALLOWED # PAHAWH HMONG SIGN XAUS..PAHAWH HMONG SIGN CIM 863 16B50..16B59; PVALID # PAHAWH HMONG DIGIT ZERO..PAHAWH HMONG DIGIT N 864 16B5B..16B61; DISALLOWED # PAHAWH HMONG NUMBER TENS..PAHAWH HMONG NUMBER 865 16B63..16B77; PVALID # PAHAWH HMONG SIGN VOS LUB..PAHAWH HMONG SIGN 866 16B7D..16B8F; PVALID # PAHAWH HMONG CLAN SIGN TSHEEJ..PAHAWH HMONG C 867 16F00..16F44; PVALID # MIAO LETTER PA..MIAO LETTER HHA 868 16F50..16F7E; PVALID # MIAO LETTER NASALIZATION..MIAO VOWEL SIGN NG 869 16F8F..16F9F; PVALID # MIAO TONE RIGHT..MIAO LETTER REFORMED TONE-8 870 1BC00..1BC6A; PVALID # DUPLOYAN LETTER H..DUPLOYAN LETTER VOCALIC M 871 1BC70..1BC7C; PVALID # DUPLOYAN AFFIX LEFT HORIZONTAL SECANT..DUPLOY 872 1BC80..1BC88; PVALID # DUPLOYAN AFFIX HIGH ACUTE..DUPLOYAN AFFIX HIG 873 1BC90..1BC99; PVALID # DUPLOYAN AFFIX LOW ACUTE..DUPLOYAN AFFIX LOW 874 1BC9C ; DISALLOWED # DUPLOYAN SIGN O WITH CROSS 875 1BC9D..1BC9E; PVALID # DUPLOYAN THICK LETTER SELECTOR..DUPLOYAN DOUB 876 1BC9F..1BCA3; DISALLOWED # DUPLOYAN PUNCTUATION CHINOOK FULL STOP..SHORT 877 1E800..1E8C4; PVALID # MENDE KIKAKUI SYLLABLE M001 KI..MENDE KIKAKUI 878 1E8C7..1E8CF; DISALLOWED # MENDE KIKAKUI DIGIT ONE..MENDE KIKAKUI DIGIT 879 1E8D0..1E8D6; PVALID # MENDE KIKAKUI COMBINING NUMBER TEENS..MENDE K 880 1EE00..1EE03; DISALLOWED # ARABIC MATHEMATICAL ALEF..ARABIC MATHEMATICAL 881 1EE05..1EE1F; DISALLOWED # ARABIC MATHEMATICAL WAW..ARABIC MATHEMATICAL 882 1EE21..1EE22; DISALLOWED # ARABIC MATHEMATICAL INITIAL BEH..ARABIC MATHE 883 1EE24 ; DISALLOWED # ARABIC MATHEMATICAL INITIAL HEH 884 1EE27 ; DISALLOWED # ARABIC MATHEMATICAL INITIAL HAH 885 1EE29..1EE32; DISALLOWED # ARABIC MATHEMATICAL INITIAL YEH..ARABIC MATHE 886 1EE34..1EE37; DISALLOWED # ARABIC MATHEMATICAL INITIAL SHEEN..ARABIC MAT 887 1EE39 ; DISALLOWED # ARABIC MATHEMATICAL INITIAL DAD 888 1EE3B ; DISALLOWED # ARABIC MATHEMATICAL INITIAL GHAIN 889 1EE42 ; DISALLOWED # ARABIC MATHEMATICAL TAILED JEEM 890 1EE47 ; DISALLOWED # ARABIC MATHEMATICAL TAILED HAH 891 1EE49 ; DISALLOWED # ARABIC MATHEMATICAL TAILED YEH 892 1EE4B ; DISALLOWED # ARABIC MATHEMATICAL TAILED LAM 893 1EE4D..1EE4F; DISALLOWED # ARABIC MATHEMATICAL TAILED NOON..ARABIC MATHE 894 1EE51..1EE52; DISALLOWED # ARABIC MATHEMATICAL TAILED SAD..ARABIC MATHEM 895 1EE54 ; DISALLOWED # ARABIC MATHEMATICAL TAILED SHEEN 896 1EE57 ; DISALLOWED # ARABIC MATHEMATICAL TAILED KHAH 897 1EE59 ; DISALLOWED # ARABIC MATHEMATICAL TAILED DAD 898 1EE5B ; DISALLOWED # ARABIC MATHEMATICAL TAILED GHAIN 899 1EE5D ; DISALLOWED # ARABIC MATHEMATICAL TAILED DOTLESS NOON 900 1EE5F ; DISALLOWED # ARABIC MATHEMATICAL TAILED DOTLESS QAF 901 1EE61..1EE62; DISALLOWED # ARABIC MATHEMATICAL STRETCHED BEH..ARABIC MAT 902 1EE64 ; DISALLOWED # ARABIC MATHEMATICAL STRETCHED HEH 903 1EE67..1EE6A; DISALLOWED # ARABIC MATHEMATICAL STRETCHED HAH..ARABIC MAT 904 1EE6C..1EE72; DISALLOWED # ARABIC MATHEMATICAL STRETCHED MEEM..ARABIC MA 905 1EE74..1EE77; DISALLOWED # ARABIC MATHEMATICAL STRETCHED SHEEN..ARABIC M 906 1EE79..1EE7C; DISALLOWED # ARABIC MATHEMATICAL STRETCHED DAD..ARABIC MAT 907 1EE7E ; DISALLOWED # ARABIC MATHEMATICAL STRETCHED DOTLESS FEH 908 1EE80..1EE89; DISALLOWED # ARABIC MATHEMATICAL LOOPED ALEF..ARABIC MATHE 909 1EE8B..1EE9B; DISALLOWED # ARABIC MATHEMATICAL LOOPED LAM..ARABIC MATHEM 910 1EEA1..1EEA3; DISALLOWED # ARABIC MATHEMATICAL DOUBLE-STRUCK BEH..ARABIC 911 1EEA5..1EEA9; DISALLOWED # ARABIC MATHEMATICAL DOUBLE-STRUCK WAW..ARABIC 912 1EEAB..1EEBB; DISALLOWED # ARABIC MATHEMATICAL DOUBLE-STRUCK LAM..ARABIC 913 1EEF0..1EEF1; DISALLOWED # ARABIC MATHEMATICAL OPERATOR MEEM WITH HAH WI 914 1F0BF ; DISALLOWED # PLAYING CARD RED JOKER 915 1F0E0..1F0F5; DISALLOWED # PLAYING CARD FOOL..PLAYING CARD TRUMP-21 916 1F10B..1F10C; DISALLOWED # DINGBAT CIRCLED SANS-SERIF DIGIT ZERO..DINGBA 917 1F16A..1F16B; DISALLOWED # RAISED MC SIGN..RAISED MD SIGN 918 1F321..1F32C; DISALLOWED # THERMOMETER..WIND BLOWING FACE 919 1F336 ; DISALLOWED # HOT PEPPER 920 1F37D ; DISALLOWED # FORK AND KNIFE WITH PLATE 921 1F394..1F39F; DISALLOWED # HEART WITH TIP ON THE LEFT..ADMISSION TICKETS 922 1F3C5 ; DISALLOWED # SPORTS MEDAL 923 1F3CB..1F3CE; DISALLOWED # WEIGHT LIFTER..RACING CAR 924 1F3D4..1F3DF; DISALLOWED # SNOW CAPPED MOUNTAIN..STADIUM 925 1F3F1..1F3F7; DISALLOWED # WHITE PENNANT..LABEL 926 1F43F ; DISALLOWED # CHIPMUNK 927 1F441 ; DISALLOWED # EYE 928 1F4F8 ; DISALLOWED # CAMERA WITH FLASH 929 1F4FD..1F4FE; DISALLOWED # FILM PROJECTOR..PORTABLE STEREO 930 1F53E..1F54A; DISALLOWED # LOWER RIGHT SHADOWED WHITE CIRCLE..DOVE OF PE 931 1F568..1F579; DISALLOWED # RIGHT SPEAKER..JOYSTICK 932 1F57B..1F5A3; DISALLOWED # LEFT HAND TELEPHONE RECEIVER..BLACK DOWN POIN 933 1F5A5..1F5FA; DISALLOWED # DESKTOP COMPUTER..WORLD MAP 934 1F600 ; DISALLOWED # GRINNING FACE 935 1F611 ; DISALLOWED # EXPRESSIONLESS FACE 936 1F615 ; DISALLOWED # CONFUSED FACE 937 1F617 ; DISALLOWED # KISSING FACE 938 1F619 ; DISALLOWED # KISSING FACE WITH SMILING EYES 939 1F61B ; DISALLOWED # FACE WITH STUCK-OUT TONGUE 940 1F61F ; DISALLOWED # WORRIED FACE 941 1F626..1F627; DISALLOWED # FROWNING FACE WITH OPEN MOUTH..ANGUISHED FACE 942 1F62C ; DISALLOWED # GRIMACING FACE 943 1F62E..1F62F; DISALLOWED # FACE WITH OPEN MOUTH..HUSHED FACE 944 1F634 ; DISALLOWED # SLEEPING FACE 945 1F641..1F642; DISALLOWED # SLIGHTLY FROWNING FACE..SLIGHTLY SMILING FACE 946 1F650..1F67F; DISALLOWED # NORTH WEST POINTING LEAF..REVERSE CHECKER BOA 947 1F6C6..1F6CF; DISALLOWED # TRIANGLE WITH ROUNDED CORNERS..BED 948 1F6E0..1F6EC; DISALLOWED # HAMMER AND WRENCH..AIRPLANE ARRIVING 949 1F6F0..1F6F3; DISALLOWED # SATELLITE..PASSENGER SHIP 950 1F780..1F7D4; DISALLOWED # BLACK LEFT-POINTING ISOSCELES RIGHT TRIANGLE. 951 1F800..1F80B; DISALLOWED # LEFTWARDS ARROW WITH SMALL TRIANGLE ARROWHEAD 952 1F810..1F847; DISALLOWED # LEFTWARDS ARROW WITH SMALL EQUILATERAL ARROWH 953 1F850..1F859; DISALLOWED # LEFTWARDS SANS-SERIF ARROW..UP DOWN SANS-SERI 954 1F860..1F887; DISALLOWED # WIDE-HEADED LEFTWARDS LIGHT BARB ARROW..WIDE- 955 1F890..1F8AD; DISALLOWED # LEFTWARDS TRIANGLE ARROWHEAD..WHITE ARROW SHA 957 Appendix B. Changes from Unicode 7.0.0 to Unicode 8.0.0 959 Changes from derived property value UNASSIGNED to either PVALID or 960 DISALLOWED. 962 08B3..08B4 ; PVALID # ARABIC LETTER AIN WITH THREE DOTS BELOW..ARAB 963 08E3 ; PVALID # ARABIC TURNED DAMMA BELOW 964 0AF9 ; PVALID # GUJARATI LETTER ZHA 965 0C5A ; PVALID # TELUGU LETTER RRRA 966 0D5F ; PVALID # MALAYALAM LETTER ARCHAIC II 967 13F5 ; PVALID # CHEROKEE LETTER MV 968 13F8..13FD ; DISALLOWED # CHEROKEE SMALL LETTER YE..CHEROKEE SMALL LETT 969 20BE ; DISALLOWED # LARI SIGN 970 218A..218B ; DISALLOWED # TURNED DIGIT TWO..TURNED DIGIT THREE 971 2BEC..2BEF ; DISALLOWED # LEFTWARDS TWO-HEADED ARROW WITH TRIANGLE ARRO 972 9FCD..9FD5 ; PVALID # .. 973 A69E ; PVALID # COMBINING CYRILLIC LETTER EF 974 A78F ; PVALID # LATIN LETTER SINOLOGICAL DOT 975 A7B2..A7B4 ; DISALLOWED # LATIN CAPITAL LETTER J WITH CROSSED-TAIL..LAT 976 A7B5 ; PVALID # LATIN SMALL LETTER BETA 977 A7B6 ; DISALLOWED # LATIN CAPITAL LETTER OMEGA 978 A7B7 ; PVALID # LATIN SMALL LETTER OMEGA 979 A8FC ; DISALLOWED # DEVANAGARI SIGN SIDDHAM 980 A8FD ; PVALID # DEVANAGARI JAIN OM 981 AB60..AB63 ; PVALID # LATIN SMALL LETTER SAKHA YAT..LATIN SMALL LET 982 AB70..ABBF ; DISALLOWED # CHEROKEE SMALL LETTER A..CHEROKEE SMALL LETTE 983 FE2E..FE2F ; PVALID # COMBINING CYRILLIC TITLO LEFT HALF..COMBINING 984 108E0..108F2; PVALID # HATRAN LETTER ALEPH..HATRAN LETTER QOPH 985 108F4..108F5; PVALID # HATRAN LETTER SHIN..HATRAN LETTER TAW 986 108FB..108FF; DISALLOWED # HATRAN NUMBER ONE..HATRAN NUMBER ONE HUNDRED 987 109BC..109BD; DISALLOWED # MEROITIC CURSIVE FRACTION ELEVEN TWELFTHS..ME 988 109C0..109CF; DISALLOWED # MEROITIC CURSIVE NUMBER ONE..MEROITIC CURSIVE 989 109D2..109FF; DISALLOWED # MEROITIC CURSIVE NUMBER ONE HUNDRED..MEROITIC 990 10C80..10CB2; DISALLOWED # OLD HUNGARIAN CAPITAL LETTER A..OLD HUNGARIAN 991 10CC0..10CF2; PVALID # OLD HUNGARIAN SMALL LETTER A..OLD HUNGARIAN S 992 10CFA..10CFF; DISALLOWED # OLD HUNGARIAN NUMBER ONE..OLD HUNGARIAN NUMBE 993 111C9 ; DISALLOWED # SHARADA SANDHI MARK 994 111CA..111CC; PVALID # SHARADA SIGN NUKTA..SHARADA EXTRA SHORT VOWEL 995 111DB ; DISALLOWED # SHARADA SIGN SIDDHAM 996 111DC ; PVALID # SHARADA HEADSTROKE 997 111DD..111DF; DISALLOWED # SHARADA CONTINUATION SIGN..SHARADA SECTION MA 998 11280..11286; PVALID # MULTANI LETTER A..MULTANI LETTER GA 999 11288 ; PVALID # MULTANI LETTER GHA 1000 1128A..1128D; PVALID # MULTANI LETTER CA..MULTANI LETTER JJA 1001 1128F..1129D; PVALID # MULTANI LETTER NYA..MULTANI LETTER BA 1002 1129F..112A8; PVALID # MULTANI LETTER BHA..MULTANI LETTER RHA 1003 112A9 ; DISALLOWED # MULTANI SECTION MARK 1004 11300 ; PVALID # GRANTHA SIGN COMBINING ANUSVARA ABOVE 1005 11350 ; PVALID # GRANTHA OM 1006 115CA..115D7; DISALLOWED # SIDDHAM SECTION MARK WITH TRIDENT AND U-SHAPE 1007 115D8..115DD; PVALID # SIDDHAM LETTER THREE-CIRCLE ALTERNATE I..SIDD 1008 11700..11719; PVALID # AHOM LETTER KA..AHOM LETTER JHA 1009 1171D..1172B; PVALID # AHOM CONSONANT SIGN MEDIAL LA..AHOM SIGN KILL 1010 11730..11739; PVALID # AHOM DIGIT ZERO..AHOM DIGIT NINE 1011 1173A..1173F; DISALLOWED # AHOM NUMBER TEN..AHOM SYMBOL VI 1012 12399 ; PVALID # CUNEIFORM SIGN U U 1013 12480..12543; PVALID # CUNEIFORM SIGN AB TIMES NUN TENU..CUNEIFORM S 1014 14400..14646; PVALID # ANATOLIAN HIEROGLYPH A001..ANATOLIAN HIEROGLY 1015 1D1DE..1D1E8; DISALLOWED # MUSICAL SYMBOL KIEVAN C CLEF..MUSICAL SYMBOL 1016 1D800..1D9FF; DISALLOWED # SIGNWRITING HAND-FIST INDEX..SIGNWRITING HEAD 1017 1DA00..1DA36; PVALID # SIGNWRITING HEAD RIM..SIGNWRITING AIR SUCKING 1018 1DA37..1DA3A; DISALLOWED # SIGNWRITING AIR BLOW SMALL ROTATIONS..SIGNWRI 1019 1DA3B..1DA6C; PVALID # SIGNWRITING MOUTH CLOSED NEUTRAL..SIGNWRITING 1020 1DA6D..1DA74; DISALLOWED # SIGNWRITING SHOULDER HIP SPINE..SIGNWRITING T 1021 1DA75 ; PVALID # SIGNWRITING UPPER BODY TILTING FROM HIP JOINT 1022 1DA76..1DA83; DISALLOWED # SIGNWRITING LIMB COMBINATION..SIGNWRITING LOC 1023 1DA84 ; PVALID # SIGNWRITING LOCATION HEAD NECK 1024 1DA85..1DA8B; DISALLOWED # SIGNWRITING LOCATION TORSO..SIGNWRITING PAREN 1025 1DA9B..1DA9F; PVALID # SIGNWRITING FILL MODIFIER-2..SIGNWRITING FILL 1026 1DAA1..1DAAF; PVALID # SIGNWRITING ROTATION MODIFIER-2..SIGNWRITING 1027 1F32D..1F32F; DISALLOWED # HOT DOG..BURRITO 1028 1F37E..1F37F; DISALLOWED # BOTTLE WITH POPPING CORK..POPCORN 1029 1F3CF..1F3D3; DISALLOWED # CRICKET BAT AND BALL..TABLE TENNIS PADDLE AND 1030 1F3F8..1F3FF; DISALLOWED # BADMINTON RACQUET AND SHUTTLECOCK..EMOJI MODI 1031 1F4FF ; DISALLOWED # PRAYER BEADS 1032 1F54B..1F54F; DISALLOWED # KAABA..BOWL OF HYGIEIA 1033 1F643..1F644; DISALLOWED # UPSIDE-DOWN FACE..FACE WITH ROLLING EYES 1034 1F6D0 ; DISALLOWED # PLACE OF WORSHIP 1035 1F910..1F918; DISALLOWED # ZIPPER-MOUTH FACE..SIGN OF THE HORNS 1036 1F980..1F984; DISALLOWED # CRAB..UNICORN FACE 1037 1F9C0 ; DISALLOWED # CHEESE WEDGE 1038 2B820..2CEA1; PVALID # .... 1080 18800..18AF2; PVALID # TANGUT COMPONENT-001..TANGUT COMPONENT-755 1081 1E000..1E006; PVALID # COMBINING GLAGOLITIC LETTER AZU..COMBINING GL 1082 1E008..1E018; PVALID # COMBINING GLAGOLITIC LETTER ZEMLJA..COMBINING 1083 1E01B..1E021; PVALID # COMBINING GLAGOLITIC LETTER SHTA..COMBINING G 1084 1E023..1E024; PVALID # COMBINING GLAGOLITIC LETTER YU..COMBINING GLA 1085 1E026..1E02A; PVALID # COMBINING GLAGOLITIC LETTER YO..COMBINING GLA 1086 1E900..1E921; DISALLOWED # ADLAM CAPITAL LETTER ALIF..ADLAM CAPITAL LETT 1087 1E922..1E94A; PVALID # ADLAM SMALL LETTER ALIF..ADLAM NUKTA 1088 1E950..1E959; PVALID # ADLAM DIGIT ZERO..ADLAM DIGIT NINE 1089 1E95E..1E95F; DISALLOWED # ADLAM INITIAL EXCLAMATION MARK..ADLAM INITIAL 1090 1F19B..1F1AC; DISALLOWED # SQUARED THREE D..SQUARED VOD 1091 1F23B ; DISALLOWED # SQUARED CJK UNIFIED IDEOGRAPH-914D 1092 1F57A ; DISALLOWED # MAN DANCING 1093 1F5A4 ; DISALLOWED # BLACK HEART 1094 1F6D1..1F6D2; DISALLOWED # OCTAGONAL SIGN..SHOPPING TROLLEY 1095 1F6F4..1F6F6; DISALLOWED # SCOOTER..CANOE 1096 1F919..1F91E; DISALLOWED # CALL ME HAND..HAND WITH INDEX AND MIDDLE FING 1097 1F920..1F927; DISALLOWED # FACE WITH COWBOY HAT..SNEEZING FACE 1098 1F930 ; DISALLOWED # PREGNANT WOMAN 1099 1F933..1F93E; DISALLOWED # SELFIE..HANDBALL 1100 1F940..1F94B; DISALLOWED # WILTED FLOWER..MARTIAL ARTS UNIFORM 1101 1F950..1F95E; DISALLOWED # CROISSANT..PANCAKES 1102 1F985..1F991; DISALLOWED # EAGLE..SQUID 1104 Appendix D. Changes from Unicode 9.0.0 to Unicode 10.0.0 1106 Changes from derived property value UNASSIGNED to either PVALID or 1107 DISALLOWED. 1109 0860..086A ; PVALID # SYRIAC LETTER MALAYALAM NGA..SYRIAC LETTER MA 1110 09FC ; PVALID # BENGALI LETTER VEDIC ANUSVARA 1111 09FD ; DISALLOWED # BENGALI ABBREVIATION SIGN 1112 0AFA..0AFF ; PVALID # GUJARATI SIGN SUKUN..GUJARATI SIGN TWO-CIRCLE 1113 0D00 ; PVALID # MALAYALAM SIGN COMBINING ANUSVARA ABOVE 1114 0D3B..0D3C ; PVALID # MALAYALAM SIGN VERTICAL BAR VIRAMA..MALAYALAM 1115 1CF7 ; PVALID # VEDIC SIGN ATIKRAMA 1116 1DF6..1DF9 ; PVALID # COMBINING KAVYKA ABOVE RIGHT..COMBINING WIDE 1117 20BF ; DISALLOWED # BITCOIN SIGN 1118 23FF ; DISALLOWED # OBSERVER EYE SYMBOL 1119 2BD2 ; DISALLOWED # GROUP MARK 1120 2E45..2E49 ; DISALLOWED # INVERTED LOW KAVYKA..DOUBLE STACKED COMMA 1121 312E ; PVALID # BOPOMOFO LETTER O WITH DOT ABOVE 1122 9FD6..9FEA ; PVALID # .. 1123 1032D..1032F; PVALID # OLD ITALIC LETTER YE..OLD ITALIC LETTER SOUTH 1124 11A00..11A3E; PVALID # ZANABAZAR SQUARE LETTER A..ZANABAZAR SQUARE C 1125 11A3F..11A46; DISALLOWED # ZANABAZAR SQUARE INITIAL HEAD MARK..ZANABAZAR 1126 11A47 ; PVALID # ZANABAZAR SQUARE SUBJOINER 1127 11A50..11A83; PVALID # SOYOMBO LETTER A..SOYOMBO LETTER KSSA 1128 11A86..11A99; PVALID # SOYOMBO CLUSTER-INITIAL LETTER RA..SOYOMBO SU 1129 11A9A..11A9C; DISALLOWED # SOYOMBO MARK TSHEG..SOYOMBO MARK DOUBLE SHAD 1130 11A9E..11AA2; DISALLOWED # SOYOMBO HEAD MARK WITH MOON AND SUN AND TRIPL 1131 11D00..11D06; PVALID # MASARAM GONDI LETTER A..MASARAM GONDI LETTER 1132 11D08..11D09; PVALID # MASARAM GONDI LETTER AI..MASARAM GONDI LETTER 1133 11D0B..11D36; PVALID # MASARAM GONDI LETTER AU..MASARAM GONDI VOWEL 1134 11D3A ; PVALID # MASARAM GONDI VOWEL SIGN E 1135 11D3C..11D3D; PVALID # MASARAM GONDI VOWEL SIGN AI..MASARAM GONDI VO 1136 11D3F..11D47; PVALID # MASARAM GONDI VOWEL SIGN AU..MASARAM GONDI RA 1137 11D50..11D59; PVALID # MASARAM GONDI DIGIT ZERO..MASARAM GONDI DIGIT 1138 16FE1 ; PVALID # NUSHU ITERATION MARK 1139 1B002..1B11E; PVALID # HENTAIGANA LETTER A-1..HENTAIGANA LETTER N-MU 1140 1B170..1B2FB; PVALID # NUSHU CHARACTER-1B170..NUSHU CHARACTER-1B2FB 1141 1F260..1F265; DISALLOWED # ROUNDED SYMBOL FOR FU..ROUNDED SYMBOL FOR CAI 1142 1F6D3..1F6D4; DISALLOWED # STUPA..PAGODA 1143 1F6F7..1F6F8; DISALLOWED # SLED..FLYING SAUCER 1144 1F900..1F90B; DISALLOWED # CIRCLED CROSS FORMEE WITH FOUR DOTS..DOWNWARD 1145 1F91F ; DISALLOWED # I LOVE YOU HAND SIGN 1146 1F928..1F92F; DISALLOWED # FACE WITH ONE EYEBROW RAISED..SHOCKED FACE WI 1147 1F931..1F932; DISALLOWED # BREAST-FEEDING..PALMS UP TOGETHER 1148 1F94C ; DISALLOWED # CURLING STONE 1149 1F95F..1F96B; DISALLOWED # DUMPLING..CANNED FOOD 1150 1F992..1F997; DISALLOWED # GIRAFFE FACE..CRICKET 1151 1F9D0..1F9E6; DISALLOWED # FACE WITH MONOCLE..SOCKS 1152 2CEB0..2EBE0; PVALID # .... 1181 A7AF ; PVALID # LATIN LETTER SMALL CAPITAL Q 1182 A7B8 ; DISALLOWED # LATIN CAPITAL LETTER U WITH STROKE 1183 A7B9 ; PVALID # LATIN SMALL LETTER U WITH STROKE 1184 A8FE..A8FF ; PVALID # DEVANAGARI LETTER AY..DEVANAGARI VOWEL SIGN A 1185 10A34..10A35; PVALID # KHAROSHTHI LETTER TTTA..KHAROSHTHI LETTER VHA 1186 10A48 ; DISALLOWED # KHAROSHTHI FRACTION ONE HALF 1187 10D00..10D27; PVALID # HANIFI ROHINGYA LETTER A..HANIFI ROHINGYA SIG 1188 10D30..10D39; PVALID # HANIFI ROHINGYA DIGIT ZERO..HANIFI ROHINGYA D 1189 10F00..10F1C; PVALID # OLD SOGDIAN LETTER ALEPH..OLD SOGDIAN LETTER 1190 10F1D..10F26; DISALLOWED # OLD SOGDIAN NUMBER ONE..OLD SOGDIAN FRACTION 1191 10F27 ; PVALID # OLD SOGDIAN LIGATURE AYIN-DALETH 1192 10F30..10F50; PVALID # SOGDIAN LETTER ALEPH..SOGDIAN COMBINING STROK 1193 10F51..10F59; DISALLOWED # SOGDIAN NUMBER ONE..SOGDIAN PUNCTUATION HALF 1194 110CD ; DISALLOWED # KAITHI NUMBER SIGN ABOVE 1195 11144..11146; PVALID # CHAKMA LETTER LHAA..CHAKMA VOWEL SIGN EI 1196 1133B ; PVALID # COMBINING BINDU BELOW 1197 1145E ; PVALID # NEWA SANDHI MARK 1198 1171A ; PVALID # AHOM LETTER ALTERNATE BA 1199 11800..1183A; PVALID # DOGRA LETTER A..DOGRA SIGN NUKTA 1200 1183B ; DISALLOWED # DOGRA ABBREVIATION SIGN 1201 11A9D ; PVALID # SOYOMBO MARK PLUTA 1202 11D60..11D65; PVALID # GUNJALA GONDI LETTER A..GUNJALA GONDI LETTER 1203 11D67..11D68; PVALID # GUNJALA GONDI LETTER EE..GUNJALA GONDI LETTER 1204 11D6A..11D8E; PVALID # GUNJALA GONDI LETTER OO..GUNJALA GONDI VOWEL 1205 11D90..11D91; PVALID # GUNJALA GONDI VOWEL SIGN EE..GUNJALA GONDI VO 1206 11D93..11D98; PVALID # GUNJALA GONDI VOWEL SIGN OO..GUNJALA GONDI OM 1207 11DA0..11DA9; PVALID # GUNJALA GONDI DIGIT ZERO..GUNJALA GONDI DIGIT 1208 11EE0..11EF6; PVALID # MAKASAR LETTER KA..MAKASAR VOWEL SIGN O 1209 11EF7..11EF8; DISALLOWED # MAKASAR PASSIMBANG..MAKASAR END OF SECTION 1210 16E40..16E5F; DISALLOWED # MEDEFAIDRIN CAPITAL LETTER M..MEDEFAIDRIN CAP 1211 16E60..16E7F; PVALID # MEDEFAIDRIN SMALL LETTER M..MEDEFAIDRIN SMALL 1212 16E80..16E9A; DISALLOWED # MEDEFAIDRIN DIGIT ZERO..MEDEFAIDRIN EXCLAMATI 1213 187ED..187F1; PVALID # .. 1214 1D2E0..1D2F3; DISALLOWED # MAYAN NUMERAL ZERO..MAYAN NUMERAL NINETEEN 1215 1D372..1D378; DISALLOWED # IDEOGRAPHIC TALLY MARK ONE..TALLY MARK FIVE 1216 1EC71..1ECB4; DISALLOWED # INDIC SIYAQ NUMBER ONE..INDIC SIYAQ ALTERNATE 1217 1F12F ; DISALLOWED # COPYLEFT SYMBOL 1218 1F6F9 ; DISALLOWED # SKATEBOARD 1219 1F7D5..1F7D8; DISALLOWED # CIRCLED TRIANGLE..NEGATIVE CIRCLED SQUARE 1220 1F94D..1F94F; DISALLOWED # LACROSSE STICK AND BALL..FLYING DISC 1221 1F96C..1F970; DISALLOWED # LEAFY GREEN..SMILING FACE WITH SMILING EYES A 1222 1F973..1F976; DISALLOWED # FACE WITH PARTY HORN AND PARTY HAT..FREEZING 1223 1F97A ; DISALLOWED # FACE WITH PLEADING EYES 1224 1F97C..1F97F; DISALLOWED # LAB COAT..FLAT SHOE 1225 1F998..1F9A2; DISALLOWED # KANGAROO..SWAN 1226 1F9B0..1F9B9; DISALLOWED # EMOJI COMPONENT RED HAIR..SUPERVILLAIN 1227 1F9C1..1F9C2; DISALLOWED # CUPCAKE..SALT SHAKER 1228 1F9E7..1F9FF; DISALLOWED # RED GIFT ENVELOPE..NAZAR AMULET 1229 1FA60..1FA6D; DISALLOWED # XIANGQI RED GENERAL..XIANGQI BLACK SOLDIER 1231 Appendix F. Changes from Unicode 11.0.0 to Unicode 12.0.0 1233 Changes from derived property value UNASSIGNED to either PVALID or 1234 DISALLOWED. 1236 0C77 ; DISALLOWED # TELUGU SIGN SIDDHAM 1237 0E86 ; PVALID # LAO LETTER PALI GHA 1238 0E89 ; PVALID # LAO LETTER PALI CHA 1239 0E8C ; PVALID # LAO LETTER PALI JHA 1240 0E8E..0E93 ; PVALID # LAO LETTER PALI NYA..LAO LETTER PALI NNA 1241 0E98 ; PVALID # LAO LETTER PALI DHA 1242 0EA0 ; PVALID # LAO LETTER PALI BHA 1243 0EA8..0EA9 ; PVALID # LAO LETTER SANSKRIT SHA..LAO LETTER SANSKRIT 1244 0EAC ; PVALID # LAO LETTER PALI LLA 1245 0EBA ; PVALID # LAO SIGN PALI VIRAMA 1246 1CFA ; PVALID # VEDIC SIGN DOUBLE ANUSVARA ANTARGOMUKHA 1247 2BC9 ; DISALLOWED # NEPTUNE FORM TWO 1248 2BFF ; DISALLOWED # HELLSCHREIBER PAUSE SYMBOL 1249 2E4F ; DISALLOWED # CORNISH VERSE DIVIDER 1250 A7BA ; DISALLOWED # LATIN CAPITAL LETTER GLOTTAL A 1251 A7BB ; PVALID # LATIN SMALL LETTER GLOTTAL A 1252 A7BC ; DISALLOWED # LATIN CAPITAL LETTER GLOTTAL I 1253 A7BD ; PVALID # LATIN SMALL LETTER GLOTTAL I 1254 A7BE ; DISALLOWED # LATIN CAPITAL LETTER GLOTTAL U 1255 A7BF ; PVALID # LATIN SMALL LETTER GLOTTAL U 1256 A7C2 ; DISALLOWED # LATIN CAPITAL LETTER ANGLICANA W 1257 A7C3 ; PVALID # LATIN SMALL LETTER ANGLICANA W 1258 A7C4..A7C6 ; DISALLOWED # LATIN CAPITAL LETTER C WITH PALATAL HOOK..LAT 1259 AB66..AB67 ; PVALID # LATIN SMALL LETTER DZ DIGRAPH WITH RETROFLEX 1260 10FE0..10FF6; PVALID # ELYMAIC LETTER ALEPH..ELYMAIC LIGATURE ZAYIN- 1261 1145F ; PVALID # NEWA LETTER VEDIC ANUSVARA 1262 116B8 ; PVALID # TAKRI LETTER ARCHAIC KHA 1263 119A0..119A7; PVALID # NANDINAGARI LETTER A..NANDINAGARI LETTER VOCA 1264 119AA..119D7; PVALID # NANDINAGARI LETTER E..NANDINAGARI VOWEL SIGN 1265 119DA..119E1; PVALID # NANDINAGARI VOWEL SIGN E..NANDINAGARI SIGN AV 1266 119E2 ; DISALLOWED # NANDINAGARI SIGN SIDDHAM 1267 119E3..119E4; PVALID # NANDINAGARI HEADSTROKE..NANDINAGARI VOWEL SIG 1268 11A84..11A85; PVALID # SOYOMBO SIGN JIHVAMULIYA..SOYOMBO SIGN UPADHM 1269 11FC0..11FF1; DISALLOWED # TAMIL FRACTION ONE THREE-HUNDRED-AND-TWENTIET 1270 11FFF ; DISALLOWED # TAMIL PUNCTUATION END OF TEXT 1271 13430..13438; DISALLOWED # EGYPTIAN HIEROGLYPH VERTICAL JOINER..EGYPTIAN 1272 16F45..16F4A; PVALID # MIAO LETTER BRI..MIAO LETTER RTE 1273 16F4F ; PVALID # MIAO SIGN CONSONANT MODIFIER BAR 1274 16F7F..16F87; PVALID # MIAO VOWEL SIGN UOG..MIAO VOWEL SIGN UI 1275 16FE2 ; DISALLOWED # OLD CHINESE HOOK MARK 1276 16FE3 ; PVALID # OLD CHINESE ITERATION MARK 1277 187F2..187F7; PVALID # .. 1278 1B150..1B152; PVALID # HIRAGANA LETTER SMALL WI..HIRAGANA LETTER SMA 1279 1B164..1B167; PVALID # KATAKANA LETTER SMALL WI..KATAKANA LETTER SMA 1280 1E100..1E12C; PVALID # NYIAKENG PUACHUE HMONG LETTER MA..NYIAKENG PU 1281 1E130..1E13D; PVALID # NYIAKENG PUACHUE HMONG TONE-B..NYIAKENG PUACH 1282 1E140..1E149; PVALID # NYIAKENG PUACHUE HMONG DIGIT ZERO..NYIAKENG P 1283 1E14E ; PVALID # NYIAKENG PUACHUE HMONG LOGOGRAM NYAJ 1284 1E14F ; DISALLOWED # NYIAKENG PUACHUE HMONG CIRCLED CA 1285 1E2C0..1E2F9; PVALID # WANCHO LETTER AA..WANCHO DIGIT NINE 1286 1E2FF ; DISALLOWED # WANCHO NGUN SIGN 1287 1E94B ; PVALID # ADLAM NASALIZATION MARK 1288 1ED01..1ED3D; DISALLOWED # OTTOMAN SIYAQ NUMBER ONE..OTTOMAN SIYAQ FRACT 1289 1F16C ; DISALLOWED # RAISED MR SIGN 1290 1F6D5 ; DISALLOWED # HINDU TEMPLE 1291 1F6FA ; DISALLOWED # AUTO RICKSHAW 1292 1F7E0..1F7EB; DISALLOWED # LARGE ORANGE CIRCLE..LARGE BROWN SQUARE 1293 1F90D..1F90F; DISALLOWED # WHITE HEART..PINCHING HAND 1294 1F93F ; DISALLOWED # DIVING MASK 1295 1F971 ; DISALLOWED # YAWNING FACE 1296 1F97B ; DISALLOWED # SARI 1297 1F9A5..1F9AA; DISALLOWED # SLOTH..OYSTER 1298 1F9AE..1F9AF; DISALLOWED # GUIDE DOG..PROBING CANE 1299 1F9BA..1F9BF; DISALLOWED # SAFETY VEST..MECHANICAL LEG 1300 1F9C3..1F9CA; DISALLOWED # BEVERAGE BOX..ICE CUBE 1301 1F9CD..1F9CF; DISALLOWED # STANDING PERSON..DEAF PERSON 1302 1FA00..1FA53; DISALLOWED # NEUTRAL CHESS KING..BLACK CHESS KNIGHT-BISHOP 1303 1FA70..1FA73; DISALLOWED # BALLET SHOES..SHORTS 1304 1FA78..1FA7A; DISALLOWED # DROP OF BLOOD..STETHOSCOPE 1305 1FA80..1FA82; DISALLOWED # YO-YO..PARACHUTE 1306 1FA90..1FA95; DISALLOWED # RINGED PLANET..BANJO 1308 Author's Address 1310 Patrik Faltstrom 1311 Netnod 1313 Email: paf@netnod.se