From: Mauricio Fernandez <mfp@...>
Date: 2006-04-28T23:46:39+09:00
Subject: Re: OT: Vim->Ruby and back ?

On Fri, Apr 28, 2006 at 12:55:02PM +0900, Gregory Brown wrote:
> On 4/27/06, Meino Christian Cramer <Meino.Cramer@gmx.de> wrote:
> 
> >E499: Empty file name for '%' or '#', only works with ":p:h"
> >
> >(dont know before, that the error message are in Chinese ... ;O)
> >
> >And now ?
> 
> hmm... looks like it needs to be run against a saved file.  :(
> 
> I hope that someone finds a solution to this, because I would like to
> add somethign to my .vimrc that can do what you want.

Here's one idea + cheap implementation:
* F7 in visual mode evaluates the selected area; temporary files are used so
  the original one isn't overwritten. The output (stdout & stderr) is shown in
  a new vsplit window (on the right)
* F7 in normal and insert modes evaluate the whole buffer; the cursor position
  is preserved (warning: overwrites the 'z' mark)
* S-F7 kills the stdout/stderr buffer; it is also removed from the
  minibufexplorer


function! Ruby_eval_vsplit() range
    let src = tempname()
    let dst = tempname()
    execute ": " . a:firstline . "," . a:lastline . "w " . src
    execute ":silent ! ruby " . src . " > " . dst . " 2>&1 "
    execute ":redraw!"
    execute ":vsplit"
    execute "normal \<C-W>l"
    execute ":e! " . dst
    execute "normal \<C-W>h"
endfunction

vmap <silent> <F7> :call Ruby_eval_vsplit()<cr>
nmap <silent> <F7> mzggVG<F7>`z
imap <silent> <F7> <ESC><F7>a
map <silent> <S-F7> <C-W>l:bw<cr>
imap <silent> <S-F7> <ESC><S-F7>


-- 
Mauricio Fernandez  -   http://eigenclass.org   -  singular Ruby