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BETA Unicode 7.0.0

The next version of the Unicode Standard will be Version 7.0.0, planned for release in July 2014. The major feature of this release is the addition of significant new repertoire to the standard: 2,834 new characters are encoded, including characters for 23 new scripts. There are also many additions to existing blocks, including several hundred new pictographs and symbols—many originating from the wingdings and webdings sets. The new currency sign for the ruble has also been encoded in this version.

A beta version of the 7.0.0 Unicode Character Database files is available for public review. We strongly encourage implementers to review the summary description, download the beta 7.0.0 Unicode Character Database files, and test their programs with the new data, well before the end of the beta period. It is especially important to review the Notable Issues for Beta Reviewers.

We encourage users to check the code charts carefully to verify correctness of the new characters added to Unicode 7.0.0 and to ensure that there are no regressions in glyph shapes for previously encoded characters.

Summary description Unicode 7.0.0
Unicode character database (UCD) httpftp
Summary of beta charts Readme.txt
Single-block charts with yellow highlighting for new characters delta charts
Single block charts for all of Unicode 7.0.0 httpftp
Code charts - single download (95MB) httpftp
Auxiliary HTML charts for beta review HTML charts

Related Unicode Technical Standards

In addition to the Unicode Standard proper, two other Unicode Technical Standards have significant text and data file updates that are correlated with the new additions for Unicode 7.0.0. Review of that text and data is also encouraged during the beta review period. 

Review and Feedback

For guidance on how to focus your review, see the section Notable Issues for Beta Reviewers.

Any feedback should be reported using the contact form. Comments on the Unicode Standard Version 7.0.0 or the Unicode Character Database data files, should refer to the beta review Public Review Issue #271. Comments on specific Version 7.0.0 UAXes and UTSes should refer to the respective Public Review Issue Numbers for each document, where available.

The comment period ends April 28, 2014. All substantive technical comments must have been received by that date for consideration at the May UTC meeting. Editorial comments (typos, etc.) may be still submitted after that date for consideration in the final editorial work.

Note: All beta files may be updated, replaced, or superseded by other files at any time. The beta files will be discarded once Unicode 7.0.0 is final. It is inappropriate to cite these files as other than a work in progress. No products or implementations should be released based on the beta UCD data files -- use only the final, approved Version 7.0.0 data files, expected in July 2014.

The Unicode Consortium provides early access to updated versions of the data files and text to give reviewers and developers as much time as possible to ensure a problem-free adoption of Version 7.0.0.

The assignment of characters for Unicode 7.0.0 is now stable. There will be no further additions or modifications of code points and no further changes to character names. Please do not submit feedback requesting changes to code points or character names for Unicode 7.0.0, as such feedback is not actionable.

One of the main purposes of the beta review period is to verify and correct the preliminary character property assignments in the Unicode Character Database. Reviewers should check for property changes to existing Unicode 6.3.0 characters, as well as the property values for the new Unicode 7.0.0 character additions. The Auxiliary HTML charts include the new characters highlighted in yellow, with names appearing when hovering over a cell. These charts may be useful for reviewing information such as the default collation order, Script property assignments, and so forth during beta review.

To facilitate verification of the property changes and additions, diffable XML versions of the Unicode Character Database are available. These XML files are dated, so that people can check the details of changes that occurred during the beta review period. The XML files are in the http://www.unicode.org/Public/7.0.0/diffs/ directory. For more information, see the diffs.readme.txt file.

The beta review period is a good opportunity to add support for the new Unicode 7.0.0 characters in internal versions of software, so that software can be tested to verify that the new characters and property assignments do not cause problems when upgraded to Version 7.0.0 of Unicode.

Notable Issues for Beta Reviewers

Changes to Unicode Standard Annexes

Some of the Unicode Standard Annexes have modifications for Unicode 7.0.0, often in coordination with changes to character properties. Most notably for Unicode 7.0.0:

Core Specification Update

The core specification is undergoing extensive review, with reorganization and many additions for Version 7.0.0. Although the draft text for Version 7.0.0 is not yet available, specific reports of any technical or editorial issues in the currently published core specification are also welcome during the beta review period. Such reports will be taken into consideration for corrections to the Version 7.0.0 draft. (Note: The Unicode Consortium has ongoing opportunities for subject-matter volunteers: experts interested in contributing to or editing relevant parts of the core specification or other Unicode specifications.)

Addition of a System for Writing Shorthand

Version 7.0.0 adds, for the first time, the encoding of a shorthand notational system in the standard. ("Shorthand notational system" in this sense refers to a system for writing shorthand, as used historically for taking dictation, or other fast manual handwriting.) See the Duployan block, U+1BC0..U+1BC9F, and the Shorthand Format Controls block, U+1BCA0..U+1BCAF. Shorthand notations introduce new classes of layout issues, and implementation of rendering will be difficult. The UTC is interested, in particular, in receiving any implementers' feedback on the correctness of character property assignments for Duployan and for shorthand format controls.

Other Issues

Please also check the following specific items carefully:

  • This version of the Unicode Standard adds many new scripts, so implementations that process script data should be checked very carefully.
  • There have been significant additions to script extensions. Implementations of script extensions should also be checked carefully.
  • The new character repertoire is diverse and complex. It includes new case pairs and new uppercase letters which form case pairs with previously encoded lowercase letters. It also includes punctuation marks whose line-breaking and terminal-punctuation properties should be examined closely.
  • Note that some of the newly added scripts, and in particular, Manichaean and Psalter Pahlavi, have complex shaping behavior. New Joining_Group property values have been defined for Manichaean. Two Manichaean letters have received the Joining_Type property value L, which previously had been assigned to only one Phags-pa character.
  • Parsers of @missing directives should be aware of the directives added in PropertyValueAliases.txt for the default values of the General_Category, Lowercase_Mapping, Titlecase_Mapping, and Uppercase_Mapping properties.
  • According to the resolution of PRI #251, three ranges of enclosed capital Latin alphabetic symbols, U+1F130..U+1F149, U+1F150..U+1F169, and U+1F170..U+1F189, were assigned the contributory binary property Other_Uppercase and, by derivation, the properties Uppercase, Alphabetic, and corresponding values of text segmentation properties.
  • The General_Category and Line_Break property values of the two ornate parentheses, U+FD3E..U+FD3F, which do not mirror and which are input visually, have been swapped (General_Category: Ps ↔ Pe; Line_Break: OP ↔ CL) to correctly reflect their usage in RTL contexts.
  • The Script property value of U+061C ARABIC LETTER MARK (ALM) was changed from Arabic to Common for consistent treatment with the similar bidirectional controls LRM and RLM.
  • There are additional property changes listed in UAX #44, Unicode Character Database that may affect some implementations.

The following blocks are new in Unicode 7.0.0. Check implementations carefully for any range or property value assumptions regarding these new blocks.

Range
Block Name
1AB0..1AFF
Combining Diacritical Marks Extended
A9E0..A9FF
Myanmar Extended-B
AB30..AB6F
Latin Extended-E
102E0..102FF
Coptic Epact Numbers
10350..1037F
Old Permic
10500..1052F
Elbasan
10530..1056F
Caucasian Albanian
10600..1077F
Linear A
10860..1087F
Palmyrene
10880..108AF
Nabataean
10A80..10A9F
Old North Arabian
10AC0..10AFF
Manichaean
10B80..10BAF
Psalter Pahlavi
11150..1117F
Mahajani
111E0..111FF
Sinhala Archaic Numbers
11200..1124F
Khojki
112B0..112FF
Khudawadi
11300..1137F
Grantha
11480..114DF
Tirhuta
11580..115FF
Siddham
11600..1165F
Modi
118A0..118FF
Warang Citi
11AC0..11AFF
Pau Cin Hau
16A40..16A6F
Mro
16AD0..16AFF
Bassa Vah
16B00..16B8F
Pahawh Hmong
1BC00..1BC9F
Duployan
1BCA0..1BCAF
Shorthand Format Controls
1E800..1E8DF
Mende Kikakui
1F650..1F67F
Ornamental Dingbats
1F780..1F7FF
Geometric Shapes Extended
1F800..1F8FF
Supplemental Arrows-C

General Issues

For current proposed updates to the particular UAXes, see Proposed Updates for Standard Annexes or use the links in the navigation bar on this page. Particular issues in the UAXes may also be the focus of specific Public Review Issues. Each proposed textual change in a UAX is highlighted, so that you can focus your review on those sections if you have limited time. The changes are also listed in detail in the Modifications sections (linked from the table of contents of each document), and are summarized in UAX changes, so you can check on those areas that might be of most interest.

Some links between beta documents and the proposed updates for UAXes will not work correctly during the beta review period. This is a known problem which does not need to be reported, as such links are links to the eventual final names or revision numbers for the released versions.

Stability

Certain character properties for newly assigned characters cannot be changed after the formal release of each version of the standard, because of the Character Encoding Stability Policy. Such character property values need special attention during the beta review process, as they cannot be corrected after publication. These include:

  • Any property affecting Unicode Normalization, including Decomposition_Mapping, Canonical_Combining_Class, and Composition_Exclusion.
  • The determination of whether a character is included in identifiers (XID_Start, XID_Continue).
  • Case mappings and case foldings.