Re: New Character Property for Prepended Concatenation Marks

However the proposal for these prepended concatenation marks does not give any hint about how to compute the extent of the following clusters above/over/below/around which they will apply (do they extend over only letters/digits, but not whitespaces or punctuation signs including abbreviation marks?

For me this kind of visual interaction should be more explicitly delimited using special marks (working like invisible parentheses) : the absence of these special marks immediately after the prepended concatenation mark should mean that they will not extend after the next (non-whitespace) cluster.