Please read following background documents.
- Malayalam/Representation of Vowellessness
- L2/06-207 on the proposed solution for issues in Malayalam Chillu encoding
- 'ID' represents the systems where format control characters are stripped
- 'IDN' is a ID system with additional restrictions.
- 'Text' means sequence of Unicode characters without any filtering or restriction.
Comparison table Edit
|Option#||Option 1||Option 2||Option 3||Option 4|
|Proposals:||<Consonant, VIRAMA, ZWJ>||<Consonant, VIRAMA, special joiner>. This special Joiner ignored in some text processing like IDN and preserved in rest.||<Consonant, Chillu Sign>||Atomic encoding of Chillus|
|Current Status||Current standard||Discussed in the Indic list||Rejected||Proposed new standard|
|1. Can represent Chillu of റ (RRA)||No||No||No||Yes|
|2. Has a non-transparent representation of Chillu||No for IDN (words with Chillu cannot be registered as IDN)||No for IDN (words with Chillu cannot be registered as IDN)||Yes||Yes|
|3. Words like നന്മ and നന്മ that are visually different, but meaning the same, can be encoded the same||Yes; barring format control characters (നന്മ cannot be used in IDN)||No in text; Yes in IDN (നന്മ cannot be used in IDN)||No (needs higher level logic to establish the equivalence)||No (needs higher level logic to establish the equivalence)|
|4. If a new chillu letter is discovered, no need to encode it specifically||Yes in text; no chillu representation available for IDN or ID||Yes in text and ID; no chillu representation available in IDN||Yes||No|
|5. ന്റ (/nta/) does not need a non-intuitive character sequence||False: <NA, VIRAMA, ZWJ, VIRAMA, RRA> with 2 consecutive VIRAMAs||False: <NA, VIRAMA, special joiner, VIRAMA, RRA>||Partly True: <NA, chillu-sign, VIRAMA, RRA>. Two consecutive VIRAMAs not required; However, equates ന്റ to ന്്റ.||Partly True: <Chillu-NA, VIRAMA, RRA>. Two consecutive VIRAMAs not required; However, equates ന്റ to ന്്റ.|
|6. Chillu-RA/RRA (ര്) is intuitive to native user||No. Native user assumes that ര് is based on RRA||No. Native user assumes that ര് is based on RRA||No. Native user assumes that ര് is based on RRA||Yes. Base character is not relevant at the encoding level|