Polytonic Greek: Use new keysyms for dead tonos and oxia
Submitted by arbiel
Assigned to Xorg Project Team
Polytonic greek is said to use three accents, named oxia, varia and perispemoni. In fact, oxia and varia are the same accent used in different contexts, and should be considered identical by any polytonic greek aware application, and more precisely in search operations.
Modern greek only has one accent, named tonos.
Glyphs for a vowel holding the tonos or a vowel holding a single oxia (a unique polytonic greek vowel may hold up to three diacritic chararters) are identical. However the Unicode consortium has defined to different code points for a vowel holding a tonos and the same vowel holding an oxia as they are not to be considered equivalent as regards the correct handling of greek documents. And it is not inconceivable that a unique document contains both monotonic and polytonic greek. Presently only the dead_acute keysym has been defined. It is wrongly used for both tonos and oxia. The lack of two different keysyms prevent for the correct generation of "vowel with oxia (only)" characters.
So please, include two new keysyms, dead_tonos, as an alias for dead_acute, and dead_oxia ; dead_oxia could be defined as a new value or as an alias for an existing keysym presently not used for generated greek letters, for example dead_doubleacute.