On Apr 8, 12:01 pm, Tim Chase<v...@tim.thechases.com> wrote:
> On 2013-04-08 08:13, Bee wrote:
>
> > I have two address lists, one address per line.
>
> > One list is the combination of the two with some cleanup.
>
> > The other is a small list of special addresses
> > that has not been cleaned for a long time.
>
> > I would like to save only the addresses that occur in both.
> > ie, save only one copy of duplicate lines.
>
> Is the case normalized in both of them, or does it need to be case
> insensitive? Your two examples ("sort iu" vs. "s/^\(.*\n\)\1/.../")
> conflict in how they handle case sensitivity. In either case, I'd be
> tempted to use a "decorate/process/undecorate" pattern, performing
> some transformation on each duplicated line. If case is the
> significant, you could do something like
>
> :set sw=4 ts=4 noet
> :%sort i " sort like lines together
> :g/^\(.*\n\)\1/s/^/XXX " mark duplicates
> :v/^\t/d " delete the non-indented lines
> :%s/^XXX " unmark the lines of interest
> :sort iu " optionally remove duplicates if there
> " were more than 2 duplicated entries
>
> If you need case insensitivity, you can do something like this for
> the 3rd command above:
>
> :1,$-1g/^/if toupper(getline('.'))==toupper(getline(line('.')+1))|sil!> |endif
>
> You just need something that is unique to the lines you want to save.
>
> -tim
Yes, all files have been changed to lowercase
" select all and lowercase
ggVGu
Bill
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