"    version = 1.01 of currentline.vim 2006 Nov 24
" 2006 Nov 24: 1.01 use redir! to force overwrite of the file
" 2006 Nov 24: 1.00 origin
"
"  Dr. Thomas D. Schneider
"  National Institutes of Health
"  National Cancer Institute
"  Center for Cancer Research Nanobiology Program
"  Molecular Information Theory Group
"  Frederick, Maryland  21702-1201
"  toms@ncifcrf.gov
"  permanent email: toms@alum.mit.edu (use only if first address fails)
"  http://www.ccrnp.ncifcrf.gov/~toms/

" Capture the current line in the file.

" Method:
" vim book page 321
" 
" "redirect messages to a file
" :redir > filename
" " capture the current line in variable j:
" :let j=line('.')
" " write out the value of j
" :echo j
" :redir END
" 
" simpler:
" 
" :redir > filename
" :echo line('.')
" :redir END

" save in a file named .vimcurrentline
" redir > .vimcurrentline
" echo line('.')
" redir END

" Book page 353: % is current file name
" save in a file named (currentfilename).vimcurrentline
" redir > %.vimcurrentline
" echo line('.')
" redir END

" Book page 355: echon no newline.

function CurrentLine()
"  redir > %.vimcurrentline
  redir! > %.vimcurrentline
  echo line('.')
  redir END
:endfunction

" Vim version 6 does not recognize plugins.
" Vim version 7 DOES - proof is to give this command:
" :function
" in Vim 7 on gets a response!  The response is:
" function CurrentLine()
" which means it saw my plugin!!

" The call is:
" :call CurrentLine()

" IT WORKED!  With an error:
" Error detected while processing function CurrentLine:
" line    1:
" E499: Empty file name for '%' or '#', only works with ":p:h":   redir > %.vimcur
" rentline
" 2
" That happened because I had not defined a file name - I called
" vim without a name.
" Solution: just forget it for now.

" THIS PLUGIN WORKS!!  But only with Vim:
" VIM - Vi IMproved 7.0 (2006 May 7, compiled Nov 24 2006 00:08:59)