> Having obtained the current byte index using col("."), I can't
> simply add n to/subtract n from the return value of col(".")
> to find the beginning of the next/previous multi-byte
> character (the -1 offset is ok because there's a base bias). I
> could use col(".") repeatedly but I would have to move the
> cursor ("normal l" or "normal h") beforehand. Also, I could
> write a function that would analyze the UTF-8 header bits
> ("11110", "1110", "110", or "10") to determine the required
> position, but I was hoping that there's another (easier) way
> to accomplish this.
Is there a big picture we can help work towards?
One method that occurs to me is possibly something like
match(getline('.'), '\%'.MYCOL.'c\k')
which I haven't tested, but it might get you the info you need
since the docs on match() indicate that it may have the indexing
smarts regarding multibyte characters.
-tim
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