Caret/insert position in field

[DunbarX at aol.com]

You sort of already had it. Wouldn't:

on mouseUp
    get lineoffset(yourChar,yourField) 
    answer offset(yourChar,the value of line it of fld yourField) 
end mouseUp

do?

Do you really always have the line you need? Or is that part of the issue? 
As for false positives, this will only give the first instance of the 
character. How do you know which instances are valid?

Craig Newman