update

scratch it, this doesn't work. It could, but it takes too much efforts to figure it out.

Better use the Text::CSV approach

maybe

  DB<45> p $_
23 45.67 "John Marcus" Surname 23 45.67 "John Marcus" Surname
  DB<46> say $2 while /(?:^|("|\s+))(.*?)\1/g
45.67
John Marcus
Surname
45.67
John Marcus
Surname

  DB<47>

[download]

Here are dragons, no guaranty whatsoever.

edit

as expected, it only works if it ends with a whitespace, and I had problems using (?:$|\1) at the end.

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery

In reply to Re: Parsing a line of text items by LanX
in thread Parsing a line of text items by mikkoi

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