0D4C MALAYALAM VOWEL SIGN AU
- Two part symbol of AU is not used now-a-days.
- Could be represented by two part symbol in fonts supporting old orthography
- Could be represented by right part alone in fonts supporting new orthography
0D57 MALAYALAM VOWEL SIGN AU - RIGHT PART ALONE
- Should not be used as MALAYALAM VOWEL SIGN AU.
- Represents the right half of 0D4C irrespective of the orthography supported by the font.
- Only required when the right part alone need to be specifically mentioned. eg: in a grammar book.
- Common day-to-day texts need not use this symbol at all.
Following are the possible solutions for this:
- Deprecate 0D57 and loose the facility to display right part alone in an old orthography font.
- Make 0D57 something like a joiner which is typically transparent to automated tools like search engines. U+0D57 will have meaning only when it is followed by U+0D47 and that combination will suppress the left part ofU+0D47, irrespective of the font.