Am I correct in believing there is no formal definition of 'logical order' for Indic scripts. For example, if the principal language using a script sorted C1-V-C2-VIRAMA on the basis of CE(C1).CE(C2).CE(V), is there any formal basis for determining whether the logical order encoding of a visual order <PA, AA, KA, VIRAMA> should be (a) <PA, AA, KA, VIRAMA> (phonetic order) or (b) <PA, KA, VIRAMA, AA> (collation-friendly order)?
I have been advised on this list that the logical order for Thai would have been the collation-friendly order, but so far as I am aware the formal status of that advice is merely that of an undisputed highly influential recommendation for a hypothetical situation. Richard.
