Combining commas above are inconsistent with those below

[GoogleCodeExporter]

The issue applies to combining commas above:
• [o̒] U+0312 COMBINING TURNED COMMA ABOVE
• [o̓] U+0313 COMBINING COMMA ABOVE
• [o̔] U+0314 COMBINING REVERSED COMMA ABOVE
• [o̕] U+0315 COMBINING COMMA ABOVE RIGHT

combining comma below:
• [o̦] U+0326 COMBINING COMMA BELOW

modifier commas above:
• [ʻ] U+02BB MODIFIER LETTER TURNED COMMA
• [ʼ] U+02BC MODIFIER LETTER APOSTROPHE
• [ʽ] U+02BD MODIFIER LETTER REVERSED COMM

and certain precomposed characters with cedilla or comma below:
• ĢĶĻŅŖȘȚ ģķļņŗșț

I believe that the comma in all these characters should look analogously, even 
though for historic reasons the Latvian letters ģķļņŗ are treated as if 
they had a cedilla rather than comma below or turned comma above.

Unfortunately in Noto Serif the combining commas above and modifier commas 
above have a bulb, while combining comma below and the comma in all precomposed 
characters have a more simplified shape. Also in Noto Sans they differ in size.

They might all have the simpler / smaller comma shape.

Why do I care? My conscript uses several letters with comma below and turned 
comma above (b̦d̦f̦l̦m̦n̦p̒r̦șțv̦z̦). They must use the combining 
characters (except for șț), and they look inconsistently in Noto fonts.

Original issue reported on code.google.com by qrc...@google.com on 7 Aug 2014 at 2:23

[GoogleCodeExporter]

Original comment by roozbeh@google.com on 28 Aug 2014 at 5:14

[GoogleCodeExporter]

Original comment by roozbeh@google.com on 16 Jan 2015 at 6:05