| Ed Note: |
This is the draft requested by AI 93-58: Draft a document to WG2 requesting that they require three mappings to identify each compatibility character: (1) the "real" Unified ideograph in 10646; (2) the source character in the standard they come from; (3) the mapping for the "base" character in the original standard for which it is a compatibility duplicate. These have not been provided for all compatibility characters up to now. |
The “Principles and Procedures for Allocation of New Characters” (Document N2652R, dated November 24, 2003) includes the following submitter responsibility in section A.1, page 11:
8: Compatibility equivalents: If the submission includes compatibility ideographic characters, identify equivalent unified CJK Ideograph character(s).
The UTC would like to refine this requirement to:
8: Compatibility equivalents: If the submission includes compatibility ideograph character, identify:
- the source which contains two distinct code positions that correspond to a single unified CJK Ideograph character of ISO 10646
- the ISO 10646 unified CJK Ideograph
- the code position in the source for the unified CJK ideograph
- the code position in the source for the proposed compatibility ideograph
This information is necessary to maintain the source data in the ISO 10646 data file CJKU_SR.txt and CJKC_SR.txt, to ensure that a compatibility character is needed for round-tripping, and to ensure that the mappings between between Unicode and other standards are consistent.
Author: Eric Muller
| Revision | Date | Comments |
| June 6, 2004 | Initial version |