Finnish almost does. There are minor exceptions, though.
Cyrillic-using languages generally do.
Re:Radiation-hardened quine
by gurkendoktor on Saturday February 22, 2014 @05:05AM
(#7281634)
The 'o' in Russian is pronounced 'a' half of the time (non-scientific estimate). :(
Re:Radiation-hardened quine
by stcredzero on Friday February 21, 2014 @01:30PM
(#7278492)
Korean?
Re:Radiation-hardened quine
by snogglethorpe on Friday February 21, 2014 @05:43PM
(#7279957)
At the least, Korean has voiced-versus-non-voiced-depending-on-word-position changes, and IIRC there are other similar rules (about changing pronunciation in certain contexts) as well.
Do any languages have an alphabet according to this definition?