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" netrwFileHandlers: contains various extension-based file handlers for
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"                    netrw's browsers' x command ("eXecute launcher")
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" Author:	Charles E. Campbell, Jr.
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" Date:		Sep 30, 2008
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" Version:	10
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" Copyright:    Copyright (C) 1999-2008 Charles E. Campbell, Jr. {{{1
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"               Permission is hereby granted to use and distribute this code,
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"               with or without modifications, provided that this copyright
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"               notice is copied with it. Like anything else that's free,
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"               netrwFileHandlers.vim is provided *as is* and comes with no
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"               warranty of any kind, either expressed or implied. In no
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"               event will the copyright holder be liable for any damages
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"               resulting from the use of this software.
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"
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" Rom 6:23 (WEB) For the wages of sin is death, but the free gift of God {{{1
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"                is eternal life in Christ Jesus our Lord.
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" ---------------------------------------------------------------------
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" Load Once: {{{1
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if exists("g:loaded_netrwFileHandlers") || &cp
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 finish
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endif
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let g:loaded_netrwFileHandlers= "v10"
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if v:version < 702
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 echohl WarningMsg
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 echo "***warning*** this version of netrwFileHandlers needs vim 7.2"
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 echohl Normal
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 finish
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endif
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let s:keepcpo= &cpo
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set cpo&vim
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" ---------------------------------------------------------------------
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" netrwFileHandlers#Invoke: {{{1
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fun! netrwFileHandlers#Invoke(exten,fname)
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"  call Dfunc("netrwFileHandlers#Invoke(exten<".a:exten."> fname<".a:fname.">)")
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  let fname= a:fname
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  " list of supported special characters.  Consider rcs,v --- that can be
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  " supported with a NFH_rcsCOMMAv() handler
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  if a:fname =~ '[@:,$!=\-+%?;~]'
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   let specials= {
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\   '@' : 'AT',
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\   ':' : 'COLON',
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\   ',' : 'COMMA',
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\   '$' : 'DOLLAR',
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\   '!' : 'EXCLAMATION',
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\   '=' : 'EQUAL',
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\   '-' : 'MINUS',
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\   '+' : 'PLUS',
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\   '%' : 'PERCENT',
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\   '?' : 'QUESTION',
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\   ';' : 'SEMICOLON',
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\   '~' : 'TILDE'}
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   let fname= substitute(a:fname,'[@:,$!=\-+%?;~]','\=specials[submatch(0)]','ge')
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"   call Decho('fname<'.fname.'> done with dictionary')
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  endif
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  if a:exten != "" && exists("*NFH_".a:exten)
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   " support user NFH_*() functions
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"   call Decho("let ret= netrwFileHandlers#NFH_".a:exten.'("'.fname.'")')
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   exe "let ret= NFH_".a:exten.'("'.fname.'")'
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  elseif a:exten != "" && exists("*s:NFH_".a:exten)
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   " use builtin-NFH_*() functions
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"   call Decho("let ret= netrwFileHandlers#NFH_".a:exten.'("'.fname.'")')
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   exe "let ret= s:NFH_".a:exten.'("'.fname.'")'
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  endif
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"  call Dret("netrwFileHandlers#Invoke 0 : ret=".ret)
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  return 0
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endfun
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" ---------------------------------------------------------------------
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" s:NFH_html: handles html when the user hits "x" when the {{{1
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"                        cursor is atop a *.html file
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fun! s:NFH_html(pagefile)
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"  call Dfunc("s:NFH_html(".a:pagefile.")")
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  let page= substitute(a:pagefile,'^','file://','')
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  if executable("mozilla")
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"   call Decho("executing !mozilla ".page)
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   exe "!mozilla ".shellescape(page,1)
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  elseif executable("netscape")
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"   call Decho("executing !netscape ".page)
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   exe "!netscape ".shellescape(page,1)
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  else
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"   call Dret("s:NFH_html 0")
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   return 0
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  endif
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"  call Dret("s:NFH_html 1")
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  return 1
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endfun
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" ---------------------------------------------------------------------
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" s:NFH_htm: handles html when the user hits "x" when the {{{1
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"                        cursor is atop a *.htm file
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fun! s:NFH_htm(pagefile)
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"  call Dfunc("s:NFH_htm(".a:pagefile.")")
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  let page= substitute(a:pagefile,'^','file://','')
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  if executable("mozilla")
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"   call Decho("executing !mozilla ".page)
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   exe "!mozilla ".shellescape(page,1)
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  elseif executable("netscape")
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"   call Decho("executing !netscape ".page)
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   exe "!netscape ".shellescape(page,1)
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  else
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"   call Dret("s:NFH_htm 0")
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   return 0
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  endif
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"  call Dret("s:NFH_htm 1")
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  return 1
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endfun
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" ---------------------------------------------------------------------
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" s:NFH_jpg: {{{1
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fun! s:NFH_jpg(jpgfile)
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"  call Dfunc("s:NFH_jpg(jpgfile<".a:jpgfile.">)")
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  if executable("gimp")
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   exe "silent! !gimp -s ".shellescape(a:jpgfile,1)
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  elseif executable(expand("$SystemRoot")."/SYSTEM32/MSPAINT.EXE")
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"   call Decho("silent! !".expand("$SystemRoot")."/SYSTEM32/MSPAINT ".escape(a:jpgfile," []|'"))
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   exe "!".expand("$SystemRoot")."/SYSTEM32/MSPAINT ".shellescape(a:jpgfile,1)
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  else
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"   call Dret("s:NFH_jpg 0")
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   return 0
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  endif
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"  call Dret("s:NFH_jpg 1")
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  return 1
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endfun
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" ---------------------------------------------------------------------
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" s:NFH_gif: {{{1
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fun! s:NFH_gif(giffile)
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"  call Dfunc("s:NFH_gif(giffile<".a:giffile.">)")
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  if executable("gimp")
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   exe "silent! !gimp -s ".shellescape(a:giffile,1)
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  elseif executable(expand("$SystemRoot")."/SYSTEM32/MSPAINT.EXE")
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   exe "silent! !".expand("$SystemRoot")."/SYSTEM32/MSPAINT ".shellescape(a:giffile,1)
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  else
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"   call Dret("s:NFH_gif 0")
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   return 0
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  endif
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"  call Dret("s:NFH_gif 1")
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  return 1
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endfun
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" ---------------------------------------------------------------------
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" s:NFH_png: {{{1
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fun! s:NFH_png(pngfile)
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"  call Dfunc("s:NFH_png(pngfile<".a:pngfile.">)")
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  if executable("gimp")
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   exe "silent! !gimp -s ".shellescape(a:pngfile,1)
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  elseif executable(expand("$SystemRoot")."/SYSTEM32/MSPAINT.EXE")
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   exe "silent! !".expand("$SystemRoot")."/SYSTEM32/MSPAINT ".shellescape(a:pngfile,1)
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  else
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"   call Dret("s:NFH_png 0")
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   return 0
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  endif
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"  call Dret("s:NFH_png 1")
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  return 1
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endfun
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" ---------------------------------------------------------------------
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" s:NFH_pnm: {{{1
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fun! s:NFH_pnm(pnmfile)
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"  call Dfunc("s:NFH_pnm(pnmfile<".a:pnmfile.">)")
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  if executable("gimp")
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   exe "silent! !gimp -s ".shellescape(a:pnmfile,1)
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  elseif executable(expand("$SystemRoot")."/SYSTEM32/MSPAINT.EXE")
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   exe "silent! !".expand("$SystemRoot")."/SYSTEM32/MSPAINT ".shellescape(a:pnmfile,1)
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  else
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"   call Dret("s:NFH_pnm 0")
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   return 0
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  endif
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"  call Dret("s:NFH_pnm 1")
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  return 1
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endfun
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" ---------------------------------------------------------------------
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" s:NFH_bmp: visualize bmp files {{{1
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fun! s:NFH_bmp(bmpfile)
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"  call Dfunc("s:NFH_bmp(bmpfile<".a:bmpfile.">)")
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  if executable("gimp")
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   exe "silent! !gimp -s ".a:bmpfile
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  elseif executable(expand("$SystemRoot")."/SYSTEM32/MSPAINT.EXE")
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   exe "silent! !".expand("$SystemRoot")."/SYSTEM32/MSPAINT ".shellescape(a:bmpfile,1)
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  else
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"   call Dret("s:NFH_bmp 0")
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   return 0
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  endif
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"  call Dret("s:NFH_bmp 1")
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  return 1
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endfun
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" ---------------------------------------------------------------------
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" s:NFH_pdf: visualize pdf files {{{1
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fun! s:NFH_pdf(pdf)
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"  call Dfunc("s:NFH_pdf(pdf<".a:pdf.">)")
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  if executable("gs")
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   exe 'silent! !gs '.shellescape(a:pdf,1)
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  elseif executable("pdftotext")
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   exe 'silent! pdftotext -nopgbrk '.shellescape(a:pdf,1)
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  else
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"  call Dret("s:NFH_pdf 0")
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   return 0
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  endif
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"  call Dret("s:NFH_pdf 1")
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  return 1
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endfun
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" ---------------------------------------------------------------------
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" s:NFH_doc: visualize doc files {{{1
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fun! s:NFH_doc(doc)
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"  call Dfunc("s:NFH_doc(doc<".a:doc.">)")
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  if executable("oowriter")
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   exe 'silent! !oowriter '.shellescape(a:doc,1)
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   redraw!
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  else
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"  call Dret("s:NFH_doc 0")
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   return 0
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  endif
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"  call Dret("s:NFH_doc 1")
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  return 1
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endfun
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" ---------------------------------------------------------------------
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" s:NFH_sxw: visualize sxw files {{{1
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fun! s:NFH_sxw(sxw)
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"  call Dfunc("s:NFH_sxw(sxw<".a:sxw.">)")
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  if executable("oowriter")
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   exe 'silent! !oowriter '.shellescape(a:sxw,1)
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   redraw!
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  else
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"   call Dret("s:NFH_sxw 0")
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   return 0
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  endif
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"  call Dret("s:NFH_sxw 1")
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  return 1
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endfun
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" ---------------------------------------------------------------------
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" s:NFH_xls: visualize xls files {{{1
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fun! s:NFH_xls(xls)
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"  call Dfunc("s:NFH_xls(xls<".a:xls.">)")
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  if executable("oocalc")
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   exe 'silent! !oocalc '.shellescape(a:xls,1)
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   redraw!
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  else
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"  call Dret("s:NFH_xls 0")
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   return 0
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  endif
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"  call Dret("s:NFH_xls 1")
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  return 1
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endfun
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" ---------------------------------------------------------------------
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" s:NFH_ps: handles PostScript files {{{1
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fun! s:NFH_ps(ps)
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"  call Dfunc("s:NFH_ps(ps<".a:ps.">)")
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  if executable("gs")
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"   call Decho("exe silent! !gs ".a:ps)
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   exe "silent! !gs ".shellescape(a:ps,1)
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   redraw!
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  elseif executable("ghostscript")
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"   call Decho("exe silent! !ghostscript ".a:ps)
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   exe "silent! !ghostscript ".shellescape(a:ps,1)
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   redraw!
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  elseif executable("gswin32")
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"   call Decho("exe silent! !gswin32 ".shellescape(a:ps,1))
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   exe "silent! !gswin32 ".shellescape(a:ps,1)
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   redraw!
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  else
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"   call Dret("s:NFH_ps 0")
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   return 0
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  endif
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"  call Dret("s:NFH_ps 1")
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  return 1
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endfun
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" ---------------------------------------------------------------------
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" s:NFH_eps: handles encapsulated PostScript files {{{1
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fun! s:NFH_eps(eps)
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"  call Dfunc("s:NFH_eps()")
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  if executable("gs")
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   exe "silent! !gs ".shellescape(a:eps,1)
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   redraw!
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  elseif executable("ghostscript")
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   exe "silent! !ghostscript ".shellescape(a:eps,1)
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   redraw!
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  elseif executable("ghostscript")
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   exe "silent! !ghostscript ".shellescape(a:eps,1)
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   redraw!
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  elseif executable("gswin32")
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   exe "silent! !gswin32 ".shellescape(a:eps,1)
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   redraw!
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  else
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"   call Dret("s:NFH_eps 0")
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   return 0
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  endif
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"  call Dret("s:NFH_eps 0")
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  return 1
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endfun
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" ---------------------------------------------------------------------
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" s:NFH_fig: handles xfig files {{{1
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fun! s:NFH_fig(fig)
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"  call Dfunc("s:NFH_fig()")
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  if executable("xfig")
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   exe "silent! !xfig ".a:fig
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   redraw!
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  else
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"   call Dret("s:NFH_fig 0")
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   return 0
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  endif
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"  call Dret("s:NFH_fig 1")
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  return 1
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endfun
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" ---------------------------------------------------------------------
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" s:NFH_obj: handles tgif's obj files {{{1
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fun! s:NFH_obj(obj)
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"  call Dfunc("s:NFH_obj()")
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  if has("unix") && executable("tgif")
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   exe "silent! !tgif ".a:obj
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   redraw!
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  else
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"   call Dret("s:NFH_obj 0")
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   return 0
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  endif
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"  call Dret("s:NFH_obj 1")
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  return 1
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endfun
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let &cpo= s:keepcpo
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" ---------------------------------------------------------------------
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"  Modelines: {{{1
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"  vim: fdm=marker