In Latin text, one can indicate permissible line break opportunities between grapheme clusters by inserting U+00AD SOFT HYPHEN. What low-end schemes, if any, exist for such mark-up within grapheme clusters?
The visual effect I wish to enable can be presented simply as: <character-2> line-break <character-1> Character-1 is a base character, character-2 is a spacing combining mark. Without a line break, one would simply see <character-2> <character-1> Alternatively, how might I give general permission for such a break? Richard.