path: root/runtime/plugin/netrw.vim

" netrw.vim: (global plugin) Handles file transfer across a network
" Last Change:	Jun 18, 2004
" Maintainer:	Charles E. Campbell, Jr. PhD   <drchipNOSPAM at campbellfamily.biz>
" Version:	46
" License:	Vim License  (see vim's :help license)
"
"  But be doers of the word, and not only hearers, deluding your own selves
"  (James 1:22 RSV)
" =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

" Exit quickly when already loaded or when 'compatible' is set.
if exists("loaded_netrw") || &cp
  finish
endif
let loaded_netrw = "v46"
let s:save_cpo   = &cpo
set cpo&vim

" ---------------------------------------------------------------------
" Default values for global netrw variables {{{1
if !exists("g:netrw_ftpmode")
 let g:netrw_ftpmode= "binary"
endif
if !exists("g:netrw_win95ftp")
 let g:netrw_win95ftp= 1
endif
if !exists("g:netrw_cygwin")
 if has("win32")
  let g:netrw_cygwin= 1
 else
  let g:netrw_cygwin= 0
 endif
endif

" ---------------------------------------------------------------------
" Default values for global protocol variables {{{1
if !exists("g:netrw_rcp_cmd")
  let g:netrw_rcp_cmd	= "rcp"
endif
if !exists("g:netrw_ftp_cmd")
  let g:netrw_ftp_cmd	= "ftp"
endif
if !exists("g:netrw_scp_cmd")
  let g:netrw_scp_cmd	= "scp -q"
endif
if !exists("g:netrw_sftp_cmd")
  let g:netrw_sftp_cmd	= "sftp"
endif
if !exists("g:netrw_http_cmd")
 if executable("wget")
  let g:netrw_http_cmd	= "wget -q -O"
 elseif executable("fetch")
  let g:netrw_http_cmd	= "fetch -o"
 else
  let g:netrw_http_cmd	= ""
 endif
endif
if !exists("g:netrw_dav_cmd")
  let g:netrw_dav_cmd	= "cadaver"
endif
if !exists("g:netrw_rsync_cmd")
  let g:netrw_rsync_cmd	= "rsync"
endif
if !exists("g:netrw_fetch_cmd")
 if executable("fetch")
  let g:netrw_fetch_cmd	= "fetch -o"
 else
  let g:netrw_fetch_cmd	= ""
 endif
endif
if !exists("g:netrw_list_cmd")
 if executable("ssh")
  let g:netrw_list_cmd= "ssh HOSTNAME ls -Fa"
 else
"  call Decho("ssh is not executable, can't do netlist")
  let g:netrw_list_cmd= ""
 endif
endif
if exists("g:netrw_silent") && g:netrw_silent != 0
 let g:netrw_silentxfer= "silent "
else
 let g:netrw_silentxfer= ""
endif
 

if has("win32")
  \ && exists("g:netrw_use_nt_rcp")
  \ && g:netrw_use_nt_rcp
  \ && executable( $SystemRoot .'/system32/rcp.exe')
 let s:netrw_has_nt_rcp = 1
 let s:netrw_rcpmode    = '-b'
 else
 let s:netrw_has_nt_rcp = 0
 let s:netrw_rcpmode    = ''
endif

" ---------------------------------------------------------------------
" Transparency Support: {{{1
" Auto-detection for ftp://*, rcp://*, scp://*, sftp://*, http://*, dav://*,
" and rsync://*
" Should make file transfers across networks transparent.  Currently I haven't
" supported appends.  Hey, gotta leave something for a future <netrw.vim>!
if version >= 600
 augroup Network
  au!
  if has("win32")
   au BufReadCmd  file://*		exe "doau BufReadPre ".expand("<afile>")|exe 'e '.substitute(expand("<afile>"),"file:/*","","")|exe "doau BufReadPost ".expand("<afile>")
  else
   au BufReadCmd  file:///*		exe "doau BufReadPre ".expand("<afile>")|exe 'e /'.substitute(expand("<afile>"),"file:/*","","")|exe "doau BufReadPost ".expand("<afile>")
   au BufReadCmd  file://localhost/*	exe "doau BufReadPre ".expand("<afile>")|exe 'e /'.substitute(expand("<afile>"),"file:/*","","")|exe "doau BufReadPost ".expand("<afile>")
  endif
  au BufReadCmd  ftp://*,rcp://*,scp://*,http://*,dav://*,rsync://*,sftp://*	exe "doau BufReadPre ".expand("<afile>")|exe "Nread 0r ".expand("<afile>")|exe "doau BufReadPost ".expand("<afile>")
  au FileReadCmd ftp://*,rcp://*,scp://*,http://*,dav://*,rsync://*,sftp://*	exe "doau BufReadPre ".expand("<afile>")|exe "Nread "   .expand("<afile>")|exe "doau BufReadPost ".expand("<afile>")
  au BufWriteCmd ftp://*,rcp://*,scp://*,dav://*,rsync://*,sftp://*    		exe "Nwrite "  .expand("<afile>")|call <SID>NetRestorePosn()
 augroup END
endif

" ------------------------------------------------------------------------
" Commands: :Nread, :Nwrite, and :NetUserPass {{{1
com! -nargs=*		Nread		call <SID>NetSavePosn()<bar>call <SID>NetRead(<f-args>)<bar>call <SID>NetRestorePosn()
com! -range=% -nargs=*	Nwrite		call <SID>NetSavePosn()<bar><line1>,<line2>call <SID>NetWrite(<f-args>)<bar>call <SID>NetRestorePosn()
com! -nargs=*		NetUserPass	call NetUserPass(<f-args>)

" ------------------------------------------------------------------------
" NetSavePosn: saves position of cursor on screen {{{1
fun! s:NetSavePosn()
"  call Dfunc("NetSavePosn()")
  " Save current line and column
  let s:netrw_winnr= winnr()
  let s:netrw_line = line(".")
  let s:netrw_col  = virtcol(".")

  " Save top-of-screen line
  norm! H0
  let s:netrw_hline= line(".")

  call s:NetRestorePosn()
"  call Dret("NetSavePosn : winnr=".s:netrw_winnr." line=".s:netrw_line." col=".s:netrw_col." hline=".s:netrw_hline)
endfun

" ------------------------------------------------------------------------
" NetRestorePosn: restores the cursor and file position as saved by NetSavePosn() {{{1
fun! <SID>NetRestorePosn()
"  call Dfunc("NetRestorePosn() winnr=".s:netrw_winnr." line=".s:netrw_line." col=".s:netrw_col." hline=".s:netrw_hline)

  exe "silent! ".s:netrw_winnr."wincmd w"
  if v:shell_error == 0
   " as suggested by Bram M: redraw on no error
   " allows protocol error messages to remain visible
   redraw!
  endif
  " restore top-of-screen line
  exe "norm! ".s:netrw_hline."G0z\<CR>"
  " restore position
  exe "norm! ".s:netrw_line."G0".s:netrw_col."\<bar>"

"  call Dret("NetRestorePosn")
endfun

" ------------------------------------------------------------------------
" NetRead: responsible for reading a file over the net {{{1
fun! s:NetRead(...)
" call Dfunc("NetRead(a:1<".a:1.">)")

 " save options
 call s:NetOptionSave()

 " Special Exception: if a file is named "0r", then
 "		      "0r" will be used to read the
 "		      following files instead of "r"
 if	a:0 == 0
  let readcmd= "r"
  let ichoice= 0
 elseif a:1 == "0r"
  let readcmd = "0r"
  let ichoice = 2
 else
  let readcmd = "r"
  let ichoice = 1
 endif

 " get name of a temporary file
 let tmpfile= tempname()

" call Decho("ichoice=".ichoice." readcmd<".readcmd.">")
 while ichoice <= a:0

  " attempt to repeat with previous host-file-etc
  if exists("b:netrw_lastfile") && a:0 == 0
"   call Decho("using b:netrw_lastfile<" . b:netrw_lastfile . ">")
   let choice = b:netrw_lastfile
   let ichoice= ichoice + 1

  else
   exe "let choice= a:" . ichoice
"   call Decho("no lastfile: choice<" . choice . ">")

   " Reconstruct Choice if choice starts with '"'
   if match(choice,"?") == 0
    echo 'NetRead Usage:'
    echo ':Nread machine:path                         uses rcp'
    echo ':Nread "machine path"                       uses ftp   with <.netrc>'
    echo ':Nread "machine id password path"           uses ftp'
    echo ':Nread dav://machine[:port]/path            uses cadaver'
    echo ':Nread fetch://machine/path                 uses fetch'
    echo ':Nread ftp://[user@]machine[:port]/path     uses ftp   autodetects <.netrc>'
    echo ':Nread http://[user@]machine/path           uses http  wget'
    echo ':Nread rcp://[user@]machine/path            uses rcp'
    echo ':Nread rsync://machine[:port]/path          uses rsync'
    echo ':Nread scp://[user@]machine[[:#]port]/path  uses scp'
    echo ':Nread sftp://[user@]machine[[:#]port]/path uses sftp'
    break
   elseif match(choice,"^\"") != -1
"    call Decho("reconstructing choice")
    if match(choice,"\"$") != -1
     " case "..."
     let choice=strpart(choice,1,strlen(choice)-2)
    else
      "  case "... ... ..."
     let choice      = strpart(choice,1,strlen(choice)-1)
     let wholechoice = ""

     while match(choice,"\"$") == -1
      let wholechoice = wholechoice . " " . choice
      let ichoice     = ichoice + 1
      if ichoice > a:0
       echoerr "Unbalanced string in filename '". wholechoice ."'"
"       call Dret("NetRead")
       return
      endif
      let choice= a:{ichoice}
     endwhile
     let choice= strpart(wholechoice,1,strlen(wholechoice)-1) . " " . strpart(choice,0,strlen(choice)-1)
    endif
   endif
  endif
"  call Decho("choice<" . choice . ">")
  let ichoice= ichoice + 1

  " fix up windows urls
  if has("win32")
   let choice = substitute(choice,'\\','/','ge')
"   call Decho("fixing up windows url to <".choice."> tmpfile<".tmpfile)
   exe 'lcd ' . fnamemodify(tmpfile,':h')
   let tmpfile = fnamemodify(tmpfile,':t')
  endif

  " Determine method of read (ftp, rcp, etc)
  call s:NetMethod(choice)

  " Check if NetList() should be handling this request
"  call Decho("checking if netlist: choice<".choice."> netrw_list_cmd<".g:netrw_list_cmd.">")
  if choice =~ "^.*/$"
   if strlen(g:netrw_list_cmd) > 0
    call s:NetList(choice)
"    call Dret("NetRead")
   else
    echoerr "sorry, can't do a remote listing; ssh isn't executable"
   endif
   return
  endif

  " ============
  " Perform Read
  " ============

  ".........................................
  " rcp:  NetRead Method #1
  if  b:netrw_method == 1 " read with rcp
"   call Decho("read via rcp (method #1)")
  " ER: noting done with g:netrw_uid yet?
  " ER: on Win2K" rcp machine[.user]:file tmpfile
  " ER: if machine contains '.' adding .user is required (use $USERNAME)
  " ER: the tmpfile is full path: rcp sees C:\... as host C
  if s:netrw_has_nt_rcp == 1
   if exists("g:netrw_uid") &&	( g:netrw_uid != "" )
    let uid_machine = g:netrw_machine .'.'. g:netrw_uid
   else
    " Any way needed it machine contains a '.'
    let uid_machine = g:netrw_machine .'.'. $USERNAME
   endif
  else
   if exists("g:netrw_uid") &&	( g:netrw_uid != "" )
    let uid_machine = g:netrw_uid .'@'. g:netrw_machine
   else
    let uid_machine = g:netrw_machine
   endif
  endif
"  call Decho("executing: !".g:netrw_rcp_cmd." ".s:netrw_rcpmode." ".uid_machine.":".escape(b:netrw_fname,' ?&')." ".tmpfile)
  exe g:netrw_silentxfer."!".g:netrw_rcp_cmd." ".s:netrw_rcpmode." ".uid_machine.":".escape(b:netrw_fname,' ?&')." ".tmpfile
  let result           = s:NetGetFile(readcmd, tmpfile, b:netrw_method)
  let b:netrw_lastfile = choice

  ".........................................
  " ftp + <.netrc>:  NetRead Method #2
  elseif b:netrw_method  == 2		" read with ftp + <.netrc>
"   call Decho("read via ftp+.netrc (method #2)")
    let netrw_fname= b:netrw_fname
    new
    set ff=unix
    exe "put ='".g:netrw_ftpmode."'"
    exe "put ='get ".netrw_fname." ".tmpfile."'"
    if exists("g:netrw_port") && g:netrw_port != ""
"     call Decho("executing: %!".g:netrw_ftp_cmd." -i ".g:netrw_machine." ".g:netrw_port)
     exe g:netrw_silentxfer."%!".g:netrw_ftp_cmd." -i ".g:netrw_machine." ".g:netrw_port
    else
"     call Decho("executing: %!".g:netrw_ftp_cmd." -i ".g:netrw_machine)
     exe g:netrw_silentxfer."%!".g:netrw_ftp_cmd." -i ".g:netrw_machine
    endif
    " If the result of the ftp operation isn't blank, show an error message (tnx to Doug Claar)
    if getline(1) !~ "^$"
     echoerr getline(1)
    endif
    bd!
    let result = s:NetGetFile(readcmd, tmpfile, b:netrw_method)
    let b:netrw_lastfile = choice

  ".........................................
  " ftp + machine,id,passwd,filename:  NetRead Method #3
  elseif b:netrw_method == 3		" read with ftp + machine, id, passwd, and fname
   " Construct execution string (four lines) which will be passed through filter
"  call Decho("read via ftp+mipf (method #3)")
   let netrw_fname= b:netrw_fname
   new
   set ff=unix
   if exists("g:netrw_port") && g:netrw_port != ""
    put ='open '.g:netrw_machine.' '.g:netrw_port
   else
    put ='open '.g:netrw_machine
   endif

   if exists("g:netrw_ftp") && g:netrw_ftp == 1
    put =g:netrw_uid
    put =g:netrw_passwd
   else
    put ='user '.g:netrw_uid.' '.g:netrw_passwd
   endif

   if exists("g:netrw_ftpmode") && g:netrw_ftpmode != ""
    put =g:netrw_ftpmode
   endif
   put ='get '.netrw_fname.' '.tmpfile

   " perform ftp:
   " -i       : turns off interactive prompting from ftp
   " -n  unix : DON'T use <.netrc>, even though it exists
   " -n  win32: quit being obnoxious about password
"   call Decho('performing ftp -i -n')
   norm 1Gdd
"   call Decho("executing: %!".g:netrw_ftp_cmd." -i -n")
   exe g:netrw_silentxfer."%!".g:netrw_ftp_cmd." -i -n"
   " If the result of the ftp operation isn't blank, show an error message (tnx to Doug Claar)
   if getline(1) !~ "^$"
    echoerr getline(1)
   endif
   bd!
   let result		= s:NetGetFile(readcmd, tmpfile, b:netrw_method)
   let b:netrw_lastfile = choice

  ".........................................
  " scp: NetRead Method #4
  elseif     b:netrw_method  == 4	" read with scp
"   call Decho("read via scp (method #4)")
   if exists("g:netrw_port") && g:netrw_port != ""
    let useport= " -P ".g:netrw_port
   else
    let useport= ""
   endif
   if g:netrw_cygwin == 1
    let cygtmpfile=substitute(tmpfile,'^\(\a\):','/cygdrive/\1/','e')
"    call Decho("executing: !".g:netrw_scp_cmd.useport." ".g:netrw_machine.":".escape(b:netrw_fname,' ?&')." ".cygtmpfile)
    exe g:netrw_silentxfer."!".g:netrw_scp_cmd.useport." ".g:netrw_machine.":".escape(b:netrw_fname,' ?&')." ".cygtmpfile
   else
"    call Decho("executing: !".g:netrw_scp_cmd.useport." ".g:netrw_machine.":".escape(b:netrw_fname,' ?&')." ".tmpfile)
    exe g:netrw_silentxfer."!".g:netrw_scp_cmd.useport." ".g:netrw_machine.":".escape(b:netrw_fname,' ?&')." ".tmpfile
   endif
   let result		= s:NetGetFile(readcmd, tmpfile, b:netrw_method)
   let b:netrw_lastfile = choice

  ".........................................
  elseif     b:netrw_method  == 5	" read with http (wget)
"   call Decho("read via http (method #5)")
   if g:netrw_http_cmd == ""
    echoerr "neither wget nor fetch command is available"
    exit
   endif

   if match(b:netrw_fname,"#") == -1
    " simple wget
"    call Decho("executing: !".g:netrw_http_cmd." ".tmpfile." http://".g:netrw_machine.escape(b:netrw_fname,' ?&'))
    exe g:netrw_silentxfer."!".g:netrw_http_cmd." ".tmpfile." http://".g:netrw_machine.escape(b:netrw_fname,' ?&')
    let result = s:NetGetFile(readcmd, tmpfile, b:netrw_method)

   else
    " wget plus a jump to an in-page marker (ie. http://abc/def.html#aMarker)
    let netrw_html= substitute(b:netrw_fname,"#.*$","","")
    let netrw_tag = substitute(b:netrw_fname,"^.*#","","")
"	call Decho("netrw_html<".netrw_html.">")
"	call Decho("netrw_tag <".netrw_tag.">")
"    call Decho("executing: !".g:netrw_http_cmd." ".tmpfile." http://".g:netrw_machine.netrw_html)
    exe g:netrw_silentxfer."!".g:netrw_http_cmd." ".tmpfile." http://".g:netrw_machine.netrw_html
    let result = s:NetGetFile(readcmd, tmpfile, b:netrw_method)
"    call Decho('<\s*a\s*name=\s*"'.netrw_tag.'"/')
    exe 'norm! 1G/<\s*a\s*name=\s*"'.netrw_tag.'"/'."\<CR>"
   endif
   let b:netrw_lastfile = choice

  ".........................................
  " cadaver: NetRead Method #6
  elseif     b:netrw_method  == 6	" read with cadaver
"   call Decho("read via cadaver (method #6)")

   " Construct execution string (four lines) which will be passed through filter
   let netrw_fname= b:netrw_fname
   new
   set ff=unix
   if exists("g:netrw_port") && g:netrw_port != ""
    put ='open '.g:netrw_machine.' '.g:netrw_port
   else
    put ='open '.g:netrw_machine
   endif
   put ='user '.g:netrw_uid.' '.g:netrw_passwd

   if g:netrw_cygwin == 1
    let cygtmpfile=substitute(tmpfile,'^\(\a\):','/cygdrive/\1/','e')
    put ='get '.netrw_fname.' '.cygtmpfile
   else
    put ='get '.netrw_fname.' '.tmpfile
   endif

   " perform cadaver operation:
   norm 1Gdd
"   call Decho("executing: %!".g:netrw_dav_cmd)
   exe g:netrw_silentxfer."%!".g:netrw_dav_cmd
   bd!
   let result		= s:NetGetFile(readcmd, tmpfile, b:netrw_method)
   let b:netrw_lastfile = choice

  ".........................................
  " rsync: NetRead Method #7
  elseif     b:netrw_method  == 7	" read with rsync
"   call Decho("read via rsync (method #7)")
   if g:netrw_cygwin == 1
    let cygtmpfile=substitute(tmpfile,'^\(\a\):','/cygdrive/\1/','e')
"    call Decho("executing: !".g:netrw_rsync_cmd." ".g:netrw_machine.":".escape(b:netrw_fname,' ?&')." ".cygtmpfile)
    exe g:netrw_silentxfer."!".g:netrw_rsync_cmd." ".g:netrw_machine.":".escape(b:netrw_fname,' ?&')." ".cygtmpfile
   else
"    call Decho("executing: !".g:netrw_rsync_cmd." ".g:netrw_machine.":".escape(b:netrw_fname,' ?&')." ".tmpfile)
    exe g:netrw_silentxfer."!".g:netrw_rsync_cmd." ".g:netrw_machine.":".escape(b:netrw_fname,' ?&')." ".tmpfile
   endif
   let result		= s:NetGetFile(readcmd,tmpfile, b:netrw_method)
   let b:netrw_lastfile = choice

  ".........................................
  " fetch: NetRead Method #8
  "    fetch://[user@]host[:http]/path
  elseif     b:netrw_method  == 8	" read with fetch
   if g:netrw_fetch_cmd == ""
    echoerr "fetch command not available"
    exit
   endif
   if exists("g:netrw_option") && g:netrw_option == ":http"
    let netrw_option= "http"
   else
    let netrw_option= "ftp"
   endif
"   call Decho("read via fetch for ".netrw_option)

   if exists("g:netrw_uid") && g:netrw_uid != "" && exists("g:netrw_passwd") && g:netrw_passwd != ""
"    call Decho("executing: !".g:netrw_fetch_cmd." ".tmpfile." ".netrw_option."://".g:netrw_uid.':'.g:netrw_passwd.'@'.g:netrw_machine."/".escape(b:netrw_fname,' ?&'))
    exe g:netrw_silentxfer."!".g:netrw_fetch_cmd." ".tmpfile." ".netrw_option."://".g:netrw_uid.':'.g:netrw_passwd.'@'.g:netrw_machine."/".escape(b:netrw_fname,' ?&')
   else
"    call Decho("executing: !".g:netrw_fetch_cmd." ".tmpfile." ".netrw_option."://".g:netrw_machine."/".escape(b:netrw_fname,' ?&'))
    exe g:netrw_silentxfer."!".g:netrw_fetch_cmd." ".tmpfile." ".netrw_option."://".g:netrw_machine."/".escape(b:netrw_fname,' ?&')
   endif

   let result		= s:NetGetFile(readcmd,tmpfile, b:netrw_method)
   let b:netrw_lastfile = choice

  ".........................................
  " sftp: NetRead Method #9
  elseif     b:netrw_method  == 9	" read with sftp
"   call Decho("read via sftp (method #4)")
   if g:netrw_cygwin == 1
    let cygtmpfile=substitute(tmpfile,'^\(\a\):','/cygdrive/\1/','e')
"    call Decho("!".g:netrw_sftp_cmd." ".g:netrw_machine.":".escape(b:netrw_fname,' ?&')." ".cygtmpfile)
"    call Decho("executing: !".g:netrw_sftp_cmd." ".g:netrw_machine.":".escape(b:netrw_fname,' ?&')." ".cygtmpfile)
    exe "!".g:netrw_sftp_cmd." ".g:netrw_machine.":".escape(b:netrw_fname,' ?&')." ".cygtmpfile
   else
"    call Decho("executing: !".g:netrw_sftp_cmd." ".g:netrw_machine.":".escape(b:netrw_fname,' ?&')." ".tmpfile)
    exe g:netrw_silentxfer."!".g:netrw_sftp_cmd." ".g:netrw_machine.":".escape(b:netrw_fname,' ?&')." ".tmpfile
   endif
   let result		= s:NetGetFile(readcmd, tmpfile, b:netrw_method)
   let b:netrw_lastfile = choice

  ".........................................
  else " Complain
   echo "***warning*** unable to comply with your request<" . choice . ">"
  endif
 endwhile

 " cleanup
" call Decho("cleanup")
 if exists("b:netrw_method")
  unlet b:netrw_method
  unlet g:netrw_machine
  unlet b:netrw_fname
 endif
 call s:NetOptionRestore()

" call Dret("NetRead")
endfun
" end of NetRead

" ------------------------------------------------------------------------
" NetGetFile: Function to read file "fname" with command "readcmd". {{{1
fun! s:NetGetFile(readcmd, fname, method)
""  call Dfunc("NetGetFile(readcmd<".a:readcmd.">,fname<".a:fname."> method<".a:method.">)")

 if exists("*NetReadFixup")
  " for the use of NetReadFixup (not otherwise used internally)
  let line2= line("$")
 endif

 " transform paths from / to \ for Windows, unless the shell is bash
 if &term == "win32"
  if &shell == "bash"
   let fname=a:fname
""  call Decho("(win32 && bash) fname<".fname.">")
  else
   let fname=substitute(a:fname,'/','\\\\','ge')
""  call Decho("(win32 && !bash) fname<".fname.">")
  endif
 else
  let fname= a:fname
""  call Decho("(copied) fname<".fname.">")
 endif

 " get the file, but disable undo when reading a new buffer
 if a:readcmd[0] == '0'
  let use_e_cmd = 0		" 1 when using ':edit'
  let delline   = 0		" 1 when have to delete empty last line
  if line("$") == 1 && getline(1) == ""
   " Now being asked to 0r a file into an empty file.
   " Safe to :e it instead, unless there is another window on the same buffer.
   let curbufnr  = bufnr("%")
   let use_e_cmd = 1
   let delline   = 1
   " Loop over all windows,
   " reset use_e_cmd when another one is editing the current buffer.
   let i = 1
   while 1
     if i != winnr() && winbufnr(i) == curbufnr
       let use_e_cmd = 0
       break
     endif
     let i = i + 1
     if winbufnr(i) < 0
       break
     endif
   endwhile
  endif

  if use_e_cmd > 0
   " ':edit' the temp file, wipe out the old buffer and rename the buffer
   let curfilename = expand("%")

   let binlocal = &l:bin
   let binglobal = &g:bin
   if binlocal
     setglobal bin		" Need to set 'bin' globally for ":e" command.
   endif
   silent exe "e! ".v:cmdarg." ".fname
   if binlocal && !binglobal
     setglobal nobin
     setlocal bin
   endif

   exe curbufnr . "bwipe!"
   exe "f ".curfilename
   " the ":f newname" apparently leaves the temporary file as the alternate
   " file in the buffer list (see :ls!).  The following command wipes it out.
   exe bufnr("#")."bwipe!"
  else
   let oldul= &ul
   set ul=-1
   exe a:readcmd." ".v:cmdarg." ".fname
   if delline > 0
    " wipe out last line, which should be a blank line anyway
    $del
   endif
   let &ul= oldul
  endif
 else
  exe a:readcmd." ".v:cmdarg." ".fname
 endif

 " User-provided (ie. optional) fix-it-up command
 if exists("*NetReadFixup")
  let line1= line(".")
  if a:readcmd == "r"
   let line2= line("$") - line2 + line1
  else
   let line2= line("$") - line2
  endif
""  call Decho("calling NetReadFixup(method<".a:method."> line1=".line1." line2=".line2.")")
  call NetReadFixup(a:method, line1, line2)
 endif
"" call Decho("readcmd<".a:readcmd."> cmdarg<".v:cmdarg."> fname<".a:fname."> readable=".filereadable(a:fname))

" insure that we have the right filetype and that its being displayed
 filetype detect
 redraw!
"" call Dret("NetGetFile")
endfun

" ------------------------------------------------------------------------
" NetWrite: responsible for writing a file over the net {{{1
fun! s:NetWrite(...) range
"" call Dfunc("NetWrite(a:0=".a:0.")")

 " option handling
 let mod= 0
 call s:NetOptionSave()

 " Get Temporary Filename
 let tmpfile= tempname()

 if a:0 == 0
  let ichoice = 0
 else
  let ichoice = 1
 endif

 " write (selected portion of) file to temporary
 silent exe a:firstline."," . a:lastline . "w! ".v:cmdarg." ".tmpfile

 while ichoice <= a:0

  " attempt to repeat with previous host-file-etc
  if exists("b:netrw_lastfile") && a:0 == 0
""   call Decho("using b:netrw_lastfile<" . b:netrw_lastfile . ">")
   let choice = b:netrw_lastfile
   let ichoice= ichoice + 1
  else
   exe "let choice= a:" . ichoice

   " Reconstruct Choice if choice starts with '"'
   if match(choice,"?") == 0
    echo 'NetWrite Usage:"'
    echo ':Nwrite machine:path                        uses rcp'
    echo ':Nwrite "machine path"                      uses ftp with <.netrc>'
    echo ':Nwrite "machine id password path"          uses ftp'
    echo ':Nwrite dav://[user@]machine/path           uses cadaver'
    echo ':Nwrite fetch://[user@]machine/path         uses fetch'
    echo ':Nwrite ftp://machine[#port]/path           uses ftp  (autodetects <.netrc>)'
    echo ':Nwrite rcp://machine/path                  uses rcp'
    echo ':Nwrite rsync://[user@]machine/path         uses rsync'
    echo ':Nwrite scp://[user@]machine[[:#]port]/path uses scp'
    echo ':Nwrite sftp://[user@]machine/path          uses sftp'
    break

   elseif match(choice,"^\"") != -1
    if match(choice,"\"$") != -1
      " case "..."
     let choice=strpart(choice,1,strlen(choice)-2)
    else
     "  case "... ... ..."
     let choice      = strpart(choice,1,strlen(choice)-1)
     let wholechoice = ""

     while match(choice,"\"$") == -1
      let wholechoice= wholechoice . " " . choice
      let ichoice    = ichoice + 1
      if choice > a:0
       echoerr "Unbalanced string in filename '". wholechoice ."'"
""       call Dret("NetWrite")
       return
      endif
      let choice= a:{ichoice}
     endwhile
     let choice= strpart(wholechoice,1,strlen(wholechoice)-1) . " " . strpart(choice,0,strlen(choice)-1)
    endif
   endif
  endif
""  call Decho("choice<" . choice . ">")
  let ichoice= ichoice + 1

  " fix up windows urls
  if has("win32")
   let choice= substitute(choice,'\\','/','ge')
   "ER: see NetRead()
   exe 'lcd ' . fnamemodify(tmpfile,':h')
   let tmpfile = fnamemodify(tmpfile,':t')
  endif

  " Determine method of read (ftp, rcp, etc)
  call s:NetMethod(choice)

  " =============
  " Perform Write
  " =============

  ".........................................
  " rcp: NetWrite Method #1
  if  b:netrw_method == 1	" write with rcp
""	Decho "write via rcp (method #1)"
   if s:netrw_has_nt_rcp == 1
    if exists("g:netrw_uid") &&  ( g:netrw_uid != "" )
     let uid_machine = g:netrw_machine .'.'. g:netrw_uid
    else
     let uid_machine = g:netrw_machine .'.'. $USERNAME
    endif
   else
    if exists("g:netrw_uid") &&  ( g:netrw_uid != "" )
     let uid_machine = g:netrw_uid .'@'. g:netrw_machine
    else
     let uid_machine = g:netrw_machine
    endif
   endif
""   call Decho("executing: !".g:netrw_rcp_cmd." ".s:netrw_rcpmode." ".tmpfile." ".uid_machine.":".escape(b:netrw_fname,' ?&'))
   exe g:netrw_silentxfer."!".g:netrw_rcp_cmd." ".s:netrw_rcpmode." ".tmpfile." ".uid_machine.":".escape(b:netrw_fname,' ?&')
   let b:netrw_lastfile = choice

  ".........................................
  " ftp + <.netrc>: NetWrite Method #2
  elseif b:netrw_method == 2	" write with ftp + <.netrc>
   let netrw_fname = b:netrw_fname
   new
   set ff=unix
   exe "put ='".g:netrw_ftpmode."'"
""   call Decho(" NetWrite: put ='".g:netrw_ftpmode."'")
   exe "put ='put ".tmpfile." ".netrw_fname."'"
""   call Decho("put ='put ".tmpfile." ".netrw_fname."'")
   if exists("g:netrw_port") && g:netrw_port != ""
""    call Decho("executing: %!".g:netrw_ftp_cmd." -i ".g:netrw_machine." ".g:netrw_port)
    exe g:netrw_silentxfer."%!".g:netrw_ftp_cmd." -i ".g:netrw_machine." ".g:netrw_port
   else
""    call Decho("executing: %!".g:netrw_ftp_cmd." -i ".g:netrw_machine)
    exe g:netrw_silentxfer."%!".g:netrw_ftp_cmd." -i ".g:netrw_machine
   endif
   " If the result of the ftp operation isn't blank, show an error message (tnx to Doug Claar)
   if getline(1) !~ "^$"
    echoerr getline(1)
    let mod=1
   endif
   bd!
   let b:netrw_lastfile = choice

  ".........................................
  " ftp + machine, id, passwd, filename: NetWrite Method #3
  elseif b:netrw_method == 3	" write with ftp + machine, id, passwd, and fname
   let netrw_fname= b:netrw_fname
   new
   set ff=unix
   if exists("g:netrw_port") && g:netrw_port != ""
    put ='open '.g:netrw_machine.' '.g:netrw_port
   else
    put ='open '.g:netrw_machine
   endif
   if exists("g:netrw_ftp") && g:netrw_ftp == 1
    put =g:netrw_uid
    put =g:netrw_passwd
   else
    put ='user '.g:netrw_uid.' '.g:netrw_passwd
   endif
   put ='put '.tmpfile.' '.netrw_fname
   " save choice/id/password for future use
   let b:netrw_lastfile = choice

   " perform ftp:
   " -i       : turns off interactive prompting from ftp
   " -n  unix : DON'T use <.netrc>, even though it exists
   " -n  win32: quit being obnoxious about password
""   call Decho('performing ftp -i -n')
   norm 1Gdd
""   call Decho("executing: %!".g:netrw_ftp_cmd." -i -n")
   exe g:netrw_silentxfer."%!".g:netrw_ftp_cmd." -i -n"
   " If the result of the ftp operation isn't blank, show an error message (tnx to Doug Claar)
   if getline(1) !~ "^$"
    echoerr getline(1)
    let mod=1
   endif
   bd!

  ".........................................
  " scp: NetWrite Method #4
  elseif     b:netrw_method == 4	" write with scp
   if exists("g:netrw_port") && g:netrw_port != ""
    let useport= " -P ".g:netrw_port
   else
    let useport= ""
   endif
   if g:netrw_cygwin == 1
    let cygtmpfile=substitute(tmpfile,'^\(\a\):','/cygdrive/\1/','e')
""    call Decho("executing: !".g:netrw_scp_cmd.useport." ".cygtmpfile." ".g:netrw_machine.":".escape(b:netrw_fname,' ?&'))
    exe g:netrw_silentxfer."!".g:netrw_scp_cmd.useport." ".cygtmpfile." ".g:netrw_machine.":".escape(b:netrw_fname,' ?&')
   else
""    call Decho("executing: !".g:netrw_scp_cmd.useport." ".tmpfile." ".g:netrw_machine.":".escape(b:netrw_fname,' ?&'))
    exe g:netrw_silentxfer."!".g:netrw_scp_cmd.useport." ".tmpfile." ".g:netrw_machine.":".escape(b:netrw_fname,' ?&')
   endif
   let b:netrw_lastfile = choice

  ".........................................
  " http: NetWrite Method #5
  elseif     b:netrw_method == 5
   echoerr "***warning*** currently <netrw.vim> does not support writing using http:"

  ".........................................
  " dav: NetWrite Method #6
  elseif     b:netrw_method == 6	" write with cadaver
""   call Decho("write via cadaver (method #6)")

   " Construct execution string (four lines) which will be passed through filter
   let netrw_fname= b:netrw_fname
   new
   set ff=unix
   if exists("g:netrw_port") && g:netrw_port != ""
    put ='open '.g:netrw_machine.' '.g:netrw_port
   else
    put ='open '.g:netrw_machine
   endif
   put ='user '.g:netrw_uid.' '.g:netrw_passwd

   if g:netrw_cygwin == 1
    let cygtmpfile=substitute(tmpfile,'^\(\a\):','/cygdrive/\1/','e')
    put ='put '.cygtmpfile.' '.netrw_fname
   else
    put ='put '.tmpfile.' '.netrw_fname
   endif

   " perform cadaver operation:
   norm 1Gdd
""   call Decho("executing: %!".g:netrw_dav_cmd)
   exe g:netrw_silentxfer."%!".g:netrw_dav_cmd
   bd!
   let b:netrw_lastfile = choice

  ".........................................
  " rsync: NetWrite Method #7
  elseif     b:netrw_method == 7	" write with rsync
   if g:netrw_cygwin == 1
    let cygtmpfile=substitute(tmpfile,'^\(\a\):','/cygdrive/\1/','e')
""    call Decho("executing: !".g:netrw_rsync_cmd." ".cygtmpfile." ".g:netrw_machine.":".escape(b:netrw_fname,' ?&'))
    exe g:netrw_silentxfer."!".g:netrw_rsync_cmd." ".cygtmpfile." ".g:netrw_machine.":".escape(b:netrw_fname,' ?&')
   else
""    call Decho("executing: !".g:netrw_rsync_cmd." ".tmpfile." ".g:netrw_machine.":".escape(b:netrw_fname,' ?&'))
    exe g:netrw_silentxfer."!".g:netrw_rsync_cmd." ".tmpfile." ".g:netrw_machine.":".escape(b:netrw_fname,' ?&')
   endif
   let b:netrw_lastfile = choice

  ".........................................
  " scp: NetWrite Method #9
  elseif     b:netrw_method == 9	" write with sftp
   let netrw_fname= b:netrw_fname
   if exists("g:netrw_uid") &&  ( g:netrw_uid != "" )
    let uid_machine = g:netrw_uid .'@'. g:netrw_machine
   else
    let uid_machine = g:netrw_machine
   endif
   new
   set ff=unix
   put ='put '.tmpfile.' '.netrw_fname
   norm 1Gdd
""   call Decho("executing: %!".g:netrw_sftp_cmd.' '.uid_machine)
   exe g:netrw_silentxfer."%!".g:netrw_sftp_cmd.' '.uid_machine
   bd!
   let b:netrw_lastfile= choice

  ".........................................
  else " Complain
   echo "***warning*** unable to comply with your request<" . choice . ">"
  endif
 endwhile

 " cleanup
"" call Decho("cleanup")
 let result=delete(tmpfile)
 call s:NetOptionRestore()

 if a:firstline == 1 && a:lastline == line("$")
  let &mod= mod	" usually equivalent to set nomod
 endif

"" call Dret("NetWrite")
endfun
" end of NetWrite

" ------------------------------------------------------------------------
" NetList: This function uses the command in g:netrw_list_cmd to get a list {{{1
"  of the contents of a remote directory.  It is assumed that the
"  g:netrw_list_cmd has a string, HOSTNAME, that needs to be substituted
"  with the requested remote hostname first.
fun! <SID>NetList(dirname)
""  call Dfunc("NetList(dirname<".a:dirname.">)")

  " sanity maintenance
  let dirname= a:dirname
  if dirname !~ '/$' && (!exists("g:netrw_machine") || !exists("b:netlist_method") || !exists("b:netlist_path"))
   let dirname= dirname."/"
  endif
  set ma

  if dirname !~ '/$' && dirname !~ '^"'
   " looks like a regular file, attempt transfer
""   call Decho("attempt transfer with regular file<".dirname.">")
""   call Decho("netlist method<".b:netlist_method."> cmd<".b:netlist_cmd."> path<".b:netlist_path.">")
   %d

   " remove any filetype indicator from end of dirname, except for the
   " "this is a directory" indicator (/)
   let dirname= substitute(dirname,"[*=@|]$","","e")
""   call Decho("modified dirname<".dirname.">")

   " remote-read the requested file into current buffer
   let machine= g:netrw_machine
   let method = b:netlist_method
   let path   = b:netlist_path
   enew!
   exe "file ".method."://".machine."/".path.dirname
   exe "doau BufReadPre ".dirname
   silent call s:NetRead(method."://".machine."/".path.dirname)
   exe "doau BufReadPost ".dirname
   1d
   set nomod noma

   silent! unlet b:netlist_method
   silent! unlet b:netlist_cmd
   silent! unlet b:netlist_path
""   call Dret("NetList")
   return

  elseif dirname == './'
   " refresh the directory list
""   call Decho("refresh directory listing")
""   call Decho("netlist method<".b:netlist_method."> cmd<".b:netlist_cmd."> path<".b:netlist_path.">")
   %d

  elseif dirname == '../'
   " go up one directory

   if b:netlist_path !~ '/' && strlen(b:netlist_path) > 0
    " go to top (rltv) directory
""    call Decho("go up one directory : 1 path<".b:netlist_path.">")
    let b:netlist_path= ""

   elseif b:netlist_path !~ '^[./]\+$' && strlen(b:netlist_path) > 0
    " remove a directory from the netlist_path
""    call Decho("go up one directory : 2 path<".b:netlist_path.">")
    if b:netlist_path =~ '^[^/]*/$'
     let b:netlist_path= ""
    else
     let b:netlist_path= substitute(b:netlist_path,'^\(.*/\)[^/]*/$','\1','')
    endif

   else
    " append ../
""    call Decho("go up one directory : 3 path<".b:netlist_path.">")
    let b:netlist_path= b:netlist_path.'../'
   endif
""   call Decho("netlist method<".b:netlist_method."> cmd<".b:netlist_cmd."> path<".b:netlist_path.">")
   %d

  elseif dirname !~ '^\w\+:' && dirname =~ '/$'
   " go down one directory
""   call Decho("go down one directory<".dirname.">")
   let b:netlist_path=b:netlist_path.dirname
""   call Decho("netlist method<".b:netlist_method."> cmd<".b:netlist_cmd."> path<".b:netlist_path.">")
   %d

  else
   " normal initial directory listing
""   call Decho("normal initial directory listing")

   let listcmd = substitute(g:netrw_list_cmd,'\<HOSTNAME\>',g:netrw_machine,'')
   let method  = substitute(dirname,'^\(\w\+\):.*$','\1','')
   let fname   = b:netrw_fname
""   call Decho("set up listcmd<".listcmd.">")
""   call Decho("set up method <".method.">")
""   call Decho("set up fname  <".fname.">")

   " set up window
   if &mod == 1
    wincmd s
   endif
   enew!
   if v:version >= 602
    setlocal bh=wipe
   endif
   
   " set up buffer-local variables
   let b:netlist_method = method
   let b:netlist_cmd    = listcmd
   let b:netlist_path   = fname

   " set up buffer-local map
   nnoremap <buffer> <cr>	:call <SID>NetList(expand("<cWORD>"))<cr>

""   call Decho("netlist method<".b:netlist_method."> cmd<".b:netlist_cmd."> path<".b:netlist_path.">")
  endif

""  call Decho("executing: r! ".b:netlist_cmd." '".b:netlist_path."'")
  put ='\" =============================='
  put ='\" Netrw Remote Directory Listing'
  put ='\"   '.g:netrw_machine.':'.b:netlist_path
  put ='\" =============================='
  exe "silent r! ".b:netlist_cmd." '".b:netlist_path."'"
  1d
  set ft=netrwlist
  silent 5,$s/^\(.*\)\/$/ \1/e
  silent 5,$call s:NetSort()
  silent 5,$s/^ \(.*\)$/\1\//e
  5
  exe 'file ['.g:netrw_machine.':'.b:netlist_path.']'
  if v:version >= 602
   setlocal nomod bh=wipe bt=nofile nobl noma
  else
   setlocal nomod
  endif

""  call Dret("NetList")
endfun

" ------------------------------------------------------------------------
" NetMethod:  determine method of transfer {{{1
"  method == 1: rcp
"	     2: ftp + <.netrc>
"	     3: ftp + machine, id, password, and [path]filename
"	     4: scp
"	     5: http (wget)
"	     6: cadaver
"	     7: rsync
"	     8: fetch
"	     9: sftp
fun! s:NetMethod(choice)  " globals: method machine id passwd fname
"" call Dfunc("NetMethod(a:choice<".a:choice.">)")

 " initialization
 let b:netrw_method  = 0
 let g:netrw_machine = ""
 let b:netrw_fname   = ""
 let g:netrw_port    = ""

 " Patterns:
 " mipf     : a:machine a:id password filename	    Use ftp
 " mf	    : a:machine filename		    Use ftp + <.netrc> or g:netrw_uid g:netrw_passwd
 " ftpurm   : ftp://[user@]host[[#:]port]/filename  Use ftp + <.netrc> or g:netrw_uid g:netrw_passwd
 " rcpurm   : rcp://[user@]host/filename	    Use rcp
 " rcphf    : [user@]host:filename		    Use rcp
 " scpurm   : scp://[user@]host[[#:]port]/filename  Use scp
 " httpurm  : http://[user@]host/filename	    Use wget
 " davurm   : dav://host[:port]/path                Use cadaver
 " rsyncurm : rsync://host[:port]/path              Use rsync
 " fetchurm : fetch://[user@]host[:http]/filename   Use fetch (defaults to ftp, override for http)
 " sftpurm  : sftp://[user@]host/filename  Use scp
 let mipf     = '^\(\S\+\)\s\+\(\S\+\)\s\+\(\S\+\)\s\+\(\S\+\)$'
 let mf       = '^\(\S\+\)\s\+\(\S\+\)$'
 let ftpurm   = '^ftp://\(\([^/@]\{-}\)@\)\=\([^/#:]\{-}\)\([#:]\d\+\)\=/\(.*\)$'
 let rcpurm   = '^rcp://\(\([^/@]\{-}\)@\)\=\([^/]\{-}\)/\(.*\)$'
 let rcphf    = '^\(\(\h\w*\)@\)\=\(\h\w*\):\([^@]\+\)$'
 let scpurm   = '^scp://\([^/]\{-}\)\([#:]\d\+\)\=/\(.*\)$'
 let httpurm  = '^http://\([^/]\{-}\)\(/.*\)\=$'
 let davurm   = '^dav://\([^/]\{-}\)/\(.*\)\=$'
 let rsyncurm = '^rsync://\([^/]\{-}\)/\(.*\)\=$'
 let fetchurm = '^fetch://\(\([^/@]\{-}\)@\)\=\([^/#:]\{-}\)\(:http\)\=/\(.*\)$'
 let sftpurm  = '^sftp://\([^/]\{-}\)/\(.*\)\=$'

"" call Decho("determine method:")
 " Determine Method
 " rcp://user@hostname/...path-to-file
 if match(a:choice,rcpurm) == 0
""  call Decho("rcp://...")
  let b:netrw_method = 1
  let userid	     = substitute(a:choice,rcpurm,'\2',"")
  let g:netrw_machine= substitute(a:choice,rcpurm,'\3',"")
  let b:netrw_fname  = substitute(a:choice,rcpurm,'\4',"")
  if userid != ""
   let g:netrw_uid= userid
  endif

 " scp://user@hostname/...path-to-file
 elseif match(a:choice,scpurm) == 0
""  call Decho("scp://...")
  let b:netrw_method = 4
  let g:netrw_machine= substitute(a:choice,scpurm,'\1',"")
  let b:netrw_port   = substitute(a:choice,scpurm,'\2',"")
  let b:netrw_fname  = substitute(a:choice,scpurm,'\3',"")

 " http://user@hostname/...path-to-file
 elseif match(a:choice,httpurm) == 0
""  call Decho("http://...")
  let b:netrw_method = 5
  let g:netrw_machine= substitute(a:choice,httpurm,'\1',"")
  let b:netrw_fname  = substitute(a:choice,httpurm,'\2',"")

 " dav://hostname[:port]/..path-to-file..
 elseif match(a:choice,davurm) == 0
""  call Decho("dav://...")
  let b:netrw_method= 6
  let g:netrw_machine= substitute(a:choice,davurm,'\1',"")
  let b:netrw_fname  = substitute(a:choice,davurm,'\2',"")

 " rsync://user@hostname/...path-to-file
 elseif match(a:choice,rsyncurm) == 0
""  call Decho("rsync://...")
  let b:netrw_method = 7
  let g:netrw_machine= substitute(a:choice,rsyncurm,'\1',"")
  let b:netrw_fname  = substitute(a:choice,rsyncurm,'\2',"")

 " ftp://[user@]hostname[[:#]port]/...path-to-file
 elseif match(a:choice,ftpurm) == 0
""  call Decho("ftp://...")
  let userid	     = substitute(a:choice,ftpurm,'\2',"")
  let g:netrw_machine= substitute(a:choice,ftpurm,'\3',"")
  let g:netrw_port   = substitute(a:choice,ftpurm,'\4',"")
  let b:netrw_fname  = substitute(a:choice,ftpurm,'\5',"")
  if g:netrw_port != ""
    let g:netrw_port = substitute(g:netrw_port,"[#:]","","")
  endif
  if userid != ""
   let g:netrw_uid= userid
  endif
  if exists("g:netrw_uid") && exists("g:netrw_passwd")
   let b:netrw_method = 3
  else
   if filereadable(expand("$HOME/.netrc")) && !exists("g:netrw_ignorenetrc")
    let b:netrw_method= 2
   else
    if !exists("g:netrw_uid") || g:netrw_uid == ""
     call NetUserPass()
    elseif !exists("g:netrw_passwd") || g:netrw_passwd == ""
     call NetUserPass(g:netrw_uid)
   " else just use current g:netrw_uid and g:netrw_passwd
    endif
    let b:netrw_method= 3
   endif
  endif

 elseif match(a:choice,fetchurm) == 0
""  call Decho("fetch://...")
  let b:netrw_method = 8
  let g:netrw_userid = substitute(a:choice,fetchurm,'\2',"")
  let g:netrw_machine= substitute(a:choice,fetchurm,'\3',"")
  let b:netrw_option = substitute(a:choice,fetchurm,'\4',"")
  let b:netrw_fname  = substitute(a:choice,fetchurm,'\5',"")

 " Issue an ftp : "machine id password [path/]filename"
 elseif match(a:choice,mipf) == 0
""  call Decho("(ftp) host id pass file")
  let b:netrw_method  = 3
  let g:netrw_machine = substitute(a:choice,mipf,'\1',"")
  let g:netrw_uid     = substitute(a:choice,mipf,'\2',"")
  let g:netrw_passwd  = substitute(a:choice,mipf,'\3',"")
  let b:netrw_fname   = substitute(a:choice,mipf,'\4',"")

 " Issue an ftp: "hostname [path/]filename"
 elseif match(a:choice,mf) == 0
""  call Decho("(ftp) host file")
  if exists("g:netrw_uid") && exists("g:netrw_passwd")
   let b:netrw_method  = 3
   let g:netrw_machine = substitute(a:choice,mf,'\1',"")
   let b:netrw_fname   = substitute(a:choice,mf,'\2',"")

  elseif filereadable(expand("$HOME/.netrc"))
   let b:netrw_method  = 2
   let g:netrw_machine = substitute(a:choice,mf,'\1',"")
   let b:netrw_fname   = substitute(a:choice,mf,'\2',"")
  endif

 " sftp://user@hostname/...path-to-file
 elseif match(a:choice,sftpurm) == 0
""  call Decho("sftp://...")
  let b:netrw_method = 9
  let g:netrw_machine= substitute(a:choice,sftpurm,'\1',"")
  let b:netrw_fname  = substitute(a:choice,sftpurm,'\2',"")

 " Issue an rcp: hostname:filename"  (this one should be last)
 elseif match(a:choice,rcphf) == 0
""  call Decho("(rcp) [user@]host:file) rcphf<".rcphf.">")
  let b:netrw_method = 1
  let userid	     = substitute(a:choice,rcphf,'\2',"")
  let g:netrw_machine= substitute(a:choice,rcphf,'\3',"")
  let b:netrw_fname  = substitute(a:choice,rcphf,'\4',"")
""  call Decho('\1<'.substitute(a:choice,rcphf,'\1',"").">")
""  call Decho('\2<'.substitute(a:choice,rcphf,'\2',"").">")
""  call Decho('\3<'.substitute(a:choice,rcphf,'\3',"").">")
""  call Decho('\4<'.substitute(a:choice,rcphf,'\4',"").">")
  if userid != ""
   let g:netrw_uid= userid
  endif
  if has("win32")
   " don't let PCs try <.netrc>
   let b:netrw_method = 3
  endif

 else
  echoerr "***error*** cannot determine method"
  let b:netrw_method  = -1
 endif

"" call Decho("a:choice       <".a:choice.">")
"" call Decho("b:netrw_method <".b:netrw_method.">")
"" call Decho("g:netrw_machine<".g:netrw_machine.">")
"" call Decho("g:netrw_port   <".g:netrw_port.">")
"" if exists("g:netrw_uid")		"Decho
""  call Decho("g:netrw_uid    <".g:netrw_uid.">")
"" endif					"Decho
"" if exists("g:netrw_passwd")		"Decho
""  call Decho("g:netrw_passwd <".g:netrw_passwd.">")
"" endif					"Decho
"" call Decho("b:netrw_fname  <".b:netrw_fname.">")
"" call Dret("NetMethod")
endfun
" end of NetMethod

" ------------------------------------------------------------------------
" NetUserPass: set username and password for subsequent ftp transfer {{{1
"   Usage:  :call NetUserPass()			-- will prompt for userid and password
"	    :call NetUserPass("uid")		-- will prompt for password
"	    :call NetUserPass("uid","password") -- sets global userid and password
fun! NetUserPass(...)

 " get/set userid
 if a:0 == 0
""  call Dfunc("NetUserPass(a:0<".a:0.">)")
  if !exists("g:netrw_uid") || g:netrw_uid == ""
   " via prompt
   let g:netrw_uid= input('Enter username: ')
  endif
 else	" from command line
""  call Dfunc("NetUserPass(a:1<".a:1.">) {")
  let g:netrw_uid= a:1
 endif

 " get password
 if a:0 <= 1 " via prompt
""  call Decho("a:0=".a:0." case <=1:")
  let g:netrw_passwd= inputsecret("Enter Password: ")
 else " from command line
""  call Decho("a:0=".a:0." case >1: a:2<".a:2.">")
  let g:netrw_passwd=a:2
 endif
""  call Dret("NetUserPass")
endfun
" end NetUserPass

" ------------------------------------------------------------------------
" NetOptionSave: save options and set to "standard" form {{{1
fun!s:NetOptionSave()
"" call Dfunc("NetOptionSave()")

 " Get Temporary Filename
 let s:aikeep	= &ai
 let s:cinkeep	= &cin
 let s:cinokeep = &cino
 let s:comkeep	= &com
 let s:cpokeep	= &cpo
 let s:dirkeep	= getcwd()
 let s:gdkeep	= &gd
 let s:twkeep	= &tw
 set cino =
 set com  =
 set cpo -=aA
 set nocin noai
 set tw   =0
 if has("win32") && !has("win95")
  let s:swfkeep= &swf
  set noswf
""  call Decho("setting s:swfkeep to <".&swf.">")
 endif

"" call Dret("NetOptionSave")
endfun

" ------------------------------------------------------------------------
" NetOptionRestore: restore options {{{1
fun! s:NetOptionRestore()
"" call Dfunc("NetOptionRestore()")

 let &ai	= s:aikeep
 let &cin	= s:cinkeep
 let &cino	= s:cinokeep
 let &com	= s:comkeep
 let &cpo	= s:cpokeep
 exe "lcd ".s:dirkeep
 let &gd	= s:gdkeep
 let &tw	= s:twkeep
 if exists("s:swfkeep")
  let &swf= s:swfkeep
  unlet s:swfkeep
 endif
 unlet s:aikeep
 unlet s:cinkeep
 unlet s:cinokeep
 unlet s:comkeep
 unlet s:cpokeep
 unlet s:gdkeep
 unlet s:twkeep
 unlet s:dirkeep

"" call Dret("NetOptionRestore")
endfun

" ------------------------------------------------------------------------
" NetReadFixup: this sort of function is typically written by the user {{{1
"               to handle extra junk that their system's ftp dumps
"               into the transfer.  This function is provided as an
"               example and as a fix for a Windows 95 problem: in my
"               experience, win95's ftp always dumped four blank lines
"               at the end of the transfer.
if has("win95") && g:netrw_win95ftp
 fun! NetReadFixup(method, line1, line2)
""   call Dfunc("NetReadFixup(method<".a:method."> line1=".a:line1." line2=".a:line2.")")
   if method == 3   " ftp (no <.netrc>)
    let fourblanklines= line2 - 3
    silent fourblanklines.",".line2."g/^\s*/d"
   endif
""   call Dret("NetReadFixup")
 endfun
endif

" ---------------------------------------------------------------------
" NetSort: Piet Delport's BISort2() function, modified to take a range
fun! <SID>NetSort() range
  let i = a:firstline + 1
  while i <= a:lastline
    " find insertion point via binary search
    let i_val = getline(i)
    let lo    = a:firstline
    let hi    = i
    while lo < hi
      let mid     = (lo + hi) / 2
      let mid_val = getline(mid)
      if i_val < mid_val
        let hi = mid
      else
        let lo = mid + 1
        if i_val == mid_val | break | endif
      endif
    endwhile
    " do insert
    if lo < i
      exec i.'d_'
      call append(lo - 1, i_val)
    endif
    let i = i + 1
  endwhile
endfun

" ------------------------------------------------------------------------
" Restore {{{1
let &cpo= s:save_cpo
unlet s:save_cpo
" vim:ts=8 fdm=marker