Tamil All Character Encoding
Additionally, since syllables with both a consonant and a vowel form 64 to 70% of Tamil text, an abugida-based model which encodes the consonant and vowel parts as separate code points is inefficient, in terms of how long a string needs to be to contain a given piece of text, in comparison with a syllabary-based model.
The Consortium points out that Unicode Tamil is now implemented by all major operating systems and web browsers, and maintains that it should be used in open interchange contexts, such as online, since tools such as search engines would not necessarily be able to identify or interpret a sequence of Unicode private-use code points as Tamil text.
[6] Regarding collation, the Consortium argues that obtaining the correct result from sorting by code point is the exception rather than the rule, highlighting that, in unmodified ASCIIbetical ordering, the uppercase Latin letter Z sorts before the lowercase letter a, and also highlighting that collation rules often differ by language (see e.g. ö).
Regarding space efficiency, the Consortium argues that storage space and bandwidth taken up by text is usually far overshadowed by other accompanying media such as images and video, and that text content performs well under general-purpose compression methods such as Deflate (originally from the ZIP file format, standardized in RFC 1951 and integrated in the HTTP protocol as a generic encoding scheme).
After this so-dubbed "Korean mess", the responsible committees pledged not to make such a compatibility-breaking change ever again,[7] which now forms part of the Unicode Stability Policy.
[8] This stability policy has been upheld ever since, in spite of demands to re-encode or change the character model for both Tibetan and Korean a second time, made by China and North Korea respectively.
[9][10][11][12] Likewise in relation to Tamil, the Consortium emphasises the "crucial issue of maintaining the stability of the standard for existing implementations", and argues that "the resulting costs and impact of destabilizing the standard" would substantially outweigh any efficiency benefits in processing speed or storage space.
