RE: How To Emulate An ISPF Editor Feature in Vim

 
> From: toothpik@swbell.net
> To: vim_use@googlegroups.com
> Subject: Re: How To Emulate An ISPF Editor Feature in Vim
> Date: Tue, 24 May 2011 23:14:47 -0500
>
> On Tuesday, May 24, 2011 20:05:02 Javier Rojas wrote:
>
> > On Tue, May 24, 2011 at 08:28:00PM -0400, Roy Fulbright wrote:
> > > I know this dates me, but back in the day I used to exclude
> > > all lines in the ISPF editor using X9999 and then use
> > > 'find' to display (unexclude) lines that matched the find
> > > criteria. I have been trying to do the same thing with Vim
> > > by folding all lines and searching, but my search unfolds
> > > all lines. Is there a way to search folded lines and have
> > > only matching lines unfolded?
>
> > you can get sort-of what you want using a plugin, and the
> > quickfix window.
>
> > See, for example, the Bgrep plugin
>
> > http://www.vim.org/scripts/script.php?script_id=2545
>
> > or this other script:
>
> > http://git.devnull.li/vim-jerojasro.git/blob_plain/HEAD:/local
> > -settings/plugin/BufGrep.vim
>
> > They will take a search pattern and create a list with the
> > matches (of the current buffer or buffers). You can see the
> > list using the :cwindow command.
>
> > See :help :vimgrep , and :help quickfix.txt
>
> or, more simply try the trick i snaggled off this list
> recently:
>
> nnoremap <silent> <Leader>o :setlocal
> foldexpr=(getline(v:lnum)=~@/)?0:(getline(v:lnum-1)=~@/)\\|\\|
> (getline(v:lnum+1)=~@/)?1:2 foldmethod=expr foldlevel=0
> foldcolumn=2<CR>
> nnoremap <silent> <Leader>oo :call UnsetFolds()<CR>
>
> function! UnsetFolds()
> setlocal foldexpr=0
> setlocal foldcolumn=0
> endfunction
>
> which, for <Leader>o folds everything except what's in @/
> (your last search item), and <Leader>oo unfolds everything --
> i am finding this eminently useful -- it reminds me of the cms
> kedit 'all' command
>
> <rant>
> kedit blows (blew?) the doors off ISPF
> </rant>
>
> sc
>

Thanks, sc. That was what I was looking for.
PS: Your email wrapped the long nnoremap line--once it was unwrapped, it worked great!