CSV edit

[Marco Calliari]

Hi,
I've seen the Text::Csv library. Could you suggest me if it could easily
and quickly convert from

1
,2
,,3
a
,b
,,c
to
1
1,2
1,2,3
a
a,b
a,b,c

I was thinking about a Regex script but I'm not really an expert:)

Thanks
Marco