251	Proposed Change to Casing Property for Some Circled or Squared Latin Letter Symbols	2013.10.28
Status:	Closed
Originator:	UTC
Informal Discussion:	Unicode Mail List (Join)
Formal Feedback:	Contact Form
Resolution:	UTC will make the Characters in the three ranges U+1F130..U+1F149, U+1F150..U+1F169, U+1F170..U+1F189 to be Uppercase and Alphabetic for Unicode 7.0 2013-09-25 Note: This change was postponed past Unicode 6.3 for reconsideration, to avoid a potential violation of property value stability guarantees.

Description of Issue:

The UTC is planning to adjust the casing properties for some circled or squared Latin letter symbols:

U+1F150 ( ) NEGATIVE CIRCLED LATIN CAPITAL LETTER A
.. U+1F169 ( ) NEGATIVE CIRCLED LATIN CAPITAL LETTER Z
U+1F170 ( ) NEGATIVE SQUARED LATIN CAPITAL LETTER A
.. U+1F189 ( ) NEGATIVE SQUARED LATIN CAPITAL LETTER Z
U+1F18A ( ) CROSSED NEGATIVE SQUARED LATIN CAPITAL LETTER P

These characters currently do not have the Uppercase property. The proposed change is to give them the Other_Uppercase property value in PropList.txt in the UCD, so that they would (by derivation) also get the Uppercase property.

Rationale: These Latin letter symbols are quite similar to ones such as U+24B6 CIRCLED LATIN CAPITAL LETTER A. Most of their properties are identical, and they are weighted analogously for collation--being treated for collation as if they were uppercase letters. As a result, there is no apparent reason for the inconsistency in the assignment of the Uppercase property value for the more recently encoded Latin letter symbols in the U+1F100 block.

The UTC is seeking feedback on this suggested change and information regarding any implementations which might be impacted by making the change.

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