Add initial vim ftplugin

tex_zathurasyntex.vim

@@ -0,0 +1,52 @@
+" See LICENSE file for license and copyright information 
+
+" avoid re-execution
+if exists("b:did_zathura_synctex_plugin")
+  finish
+endif
+let b:did_zathura_synctex_plugin = 1
+
+" set up global variables
+if !exists("g:zathura_synctex_latex_suite")
+  let g:zathura_synctex_latex_suite = 1
+endif
+
+function! Zathura_SyncTexForward()
+  let source = expand("%:p")
+  let input = shellescape(line(".").":".col(".").":".source)
+  let output = "<none>"
+  if exists("*Tex_GetMainFileName") && g:zathura_synctex_latex_suite == 1
+    " use Tex_GetMainFileName from latex-suite if it is available
+    let output = Tex_GetMainFileName(":p:r").".pdf"
+  else
+    " try to find synctex files and use them to determine the output file
+    let synctex_files = split(glob("%:p:h/*.synctex.gz"), "\n")
+    if len(synctex_files) == 0
+      echo "No synctex file found"
+      return
+    endif
+
+    let found = 0
+    for synctex in synctex_files
+      let pdffile = substitute(synctex, "synctex.gz", "pdf", "")
+      let out = system("synctex view -i ".input." -o ".shellescape(pdffile))
+      if match(out, "No tag for ".source) >= 0
+        continue
+      endif
+
+      let found = 1
+      let output = pdffile
+      break
+    endfor
+
+    if found == 0
+      echo "No synctex file containing reference to source file found"
+      return
+    endif
+  endif
+
+  let execstr = "silent !zathura --synctex-forward=".input." ".shellescape(output)
+  exec execstr
+endfunction
+
+nmap <buffer> <Leader>f :call Zathura_SyncTexForward()<Enter><Enter>