Charles E Campbell Jr wrote:
jas01 wrote:
I have a huge file where I need to delete all lines except for a few
I need.
I'm trying to do this in a single command.
I know that:
:v/Text/d
will delete all lines except for ones containing 'Text.' I have no
idea how
to put multiple strings so the command deletes everything except for
'Text'
and 'Text2' and 'Text3'.
:v/Text[23]\=/d
I rather expect that that answer won't be adequate, though. If you
want to construct regexp's that
handle boolean logic requirements, I suggest looking into LogiPat.
So, to do what you're asking, and assuming that you're not literally
looking for "Text...":
:echo LogiPat('"Text" & "Text2" & "Text3")
which yields: \%(.*Text.*\&\%(.*Text2.*\&.*Text3.*\)\)
so :v/\%(.*Text.*\&\%(.*Text2.*\&.*Text3.*\)\)/d
will delete all lines that don't have Text, Text2, or Text3 in them.
Whoops -- sorry, that command will delete all lines that don't have
Text, Text2 AND Text3 in them.
Try :echo LogiPat("Text" | "Text2" | "Text3")
which yields: \%(.*Text.*\|\%(.*Text2.*\|.*Text3.*\)\)
so :v/\%(.*Text.*\|\%(.*Text2.*\|.*Text3.*\)\)/d
will do what you want. Now, LogiPat doesn't guarantee that you'll get
the smallest possible regexp
to do the job you want. A smaller one would be:
:v/Text\|Text2\|Text3/d
You'll note that LogiPat has \%(...\) and .* in its pattern which
facilitates the use of additional logic.
Regards,
Chip Campbell
