Re: gvim substitute

thanks a lot.
It is all clear now

--Rudy

On Jul 21, 2:37 pm, Christian Brabandt <cbli...@256bit.org> wrote:
> Hi rudy_b!
>
> (please, don't top poste. I am fixing quotation)
>
> On Mi, 21 Jul 2010, rudy_b wrote:
>
>
>
> > On Jul 21, 10:58 am, Christian Brabandt <cbli...@256bit.org> wrote:
> > > :exe '%s/' join(map(range(100,line('$'),100), '''\%'' . v:val. "l$"'), '\|') '/ (CHECKED)'
> > Thank you all for your replies.
> > they all made sense.
> [...]
> > your command just works fine. Can you briefly break down what each
> > portion does?
>
> It basically builds up a dynamic substitution command and executes it.
>
> :exe      " everything following is an expression that needs to be
>           executed
> '%s/'     " start a substitution (as we are evaluating an expression,
>           we need to return it as a string)
> join(...,'\|')     " Take the list given as first argument and join it
>                    to a string by putting '\|' between each item (which
>                    means OR as Regular expression, see :h /\|)
>
> map(..., '''\%'' . v:val. "l$"')
>    " Take the list, given as first argument and for each item, put
>      \% before it and l$ after it
>
> range(100,...,100)  " Create a list of numbers, starting at 100,
>                       walk in steps of hundred and go up at most until
>
> line('$')           " numbers, which returns the last line number in
>                       the buffer
>
> So what this does, it builds a pattern, that consists of every 100th line
> number, that are joined by a logical OR. E.g. if you file has 350 lines,
> this will built a regular expression that looks like this
> /\%100l$\|\%200l$\|\%300l$
> Which means the end of each given line number. See :h /\%l for the
> meaning of that atom.
>
> And after that , we need to append the replacement part which in this
> case is simply:
>
> '/ (CHECKED)'    " Append the String (Checked)
>
> So in the end, this runs
> :%s/\%100l$\|\%200l$\|\%300l$/ (CHECKED)
>
> See also the help at
> :h :exe
> :h map()
> :h range()
> :h line()
> :h /\|
> :h /\%l
> :h /$
> :h Lists
>
> for details.
>
> regards,
> Christian

--
You received this message from the "vim_use" maillist.
Do not top-post! Type your reply below the text you are replying to.
For more information, visit http://www.vim.org/maillist.php