real name handling [2]

In addition to my previous post about real name handling, I propose
the following change to the constant (or better user
changeable/customizable variable?)  bbdb-name-gubbish[1]

(defconst bbdb-name-gubbish
  (concat "[-,. \t/\\]+\\("
          "[JjSs]r\\.?"
          "\\|V?\\(I\\.?\\)+V?"
          (concat "\\|"
                  (regexp-opt bbdb-lastname-prefixes))
          "\\)\\W*\\'"))

This means that BBDB would accept names of the form

Jane Arx, von
Peter Vries, de

and split them correctly into the firstname and lastname tokens

"Jan" "Arx, von"
"Peter" "Vries, de"

and the user has the choice to give such names either as

Jane von Arx
Peter de Vries

or

Jane Arx, von
Peter Vries, de

In both cases bbdb-divide-name extracts (and BBDB stores) the correct
firstname and lastname tokens; alphabetical sorting is evidently
different (thus at user's choice).

Thanks, Adrian.

Footnotes: 
[1]  What does "\\|V?\\(I\\.?\\)+V?" in bbdb-name-gubbish stand for?
     Ahh, I see - now when I am writing this footnote. But in France
     we have had king "Louis XVI" and possibly many other funny king
     and queen dynasties until these days. Is it better to just accept
     "\\|[XVI]+\\.?" or "\\|[MDCLXVI]+\\.?"  or - with some syntax
     check for roman numbers from I (1) to XXXVIII (38):

"\\|\\(I+\\(V\\|XX?X?\\|I?I?\\)\\|V+I?I?I?\\|X+X?X?\\(IV\\|V?I?I?I?\\)\\)\\.?"?



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