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diff --git a/autoload.vim b/autoload.vim
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+" Vim script
+" Maintainer: Peter Odding <peter@peterodding.com>
+" Last Change: June 6, 2010
+" URL: http://peterodding.com/code/vim/easytags
+
+function! easytags#autoload() " {{{1
+
+  " Update the entries for the current file in the global tags file?
+  let start = xolox#timer#start()
+  if getftime(expand('%')) > getftime(easytags#get_tagsfile())
+    UpdateTags
+    call xolox#timer#stop(start, "easytags.vim: Automatically updated tags in %s second(s)")
+  endif
+
+  " Apply highlighting of tags in global tags file to current buffer?
+  if &eventignore !~? '\<syntax\>'
+    let start = xolox#timer#start()
+    if !exists('b:easytags_last_highlighted')
+      HighlightTags
+    else
+      for tagfile in tagfiles()
+        if getftime(tagfile) > b:easytags_last_highlighted
+          HighlightTags
+          break
+        endif
+      endfor
+    endif
+    let b:easytags_last_highlighted = localtime()
+    call xolox#timer#stop(start, "easytags.vim: Automatically highlighted tags in %s second(s)")
+  endif
+
+endfunction
+
+function! easytags#update_cmd(filter_invalid_tags) " {{{1
+  if !exists('s:supported_filetypes')
+    let start = xolox#timer#start()
+    let listing = system(g:easytags_cmd . ' --list-languages')
+    if v:shell_error
+      throw "Failed to get Exuberant Ctags language mappings!"
+    endif
+    let s:supported_filetypes = split(listing, '\n')
+    call map(s:supported_filetypes, 'easytags#to_vim_ft(v:val)')
+    call xolox#timer#stop(start, "easytags.vim: Parsed language mappings in %s second(s)")
+  endif
+  let supported_filetype = index(s:supported_filetypes, &ft) >= 0
+  if supported_filetype || a:filter_invalid_tags
+    let start = xolox#timer#start()
+    let tagsfile = easytags#get_tagsfile()
+    let filename = expand('%:p')
+    if g:easytags_resolve_links
+      let filename = resolve(filename)
+    endif
+    let command = [g:easytags_cmd, '-f', shellescape(tagsfile)]
+    if filereadable(tagsfile)
+      call add(command, '-a')
+      let start_filter = xolox#timer#start()
+      let lines = readfile(tagsfile)
+      let filters = []
+      if supported_filetype
+        call add(filters, 'v:val !~ ' . string('\s' . xolox#escape#pattern(filename) . '\s'))
+      endif
+      if a:filter_invalid_tags
+        call add(filters, 'filereadable(get(split(v:val, "\t"), 1))')
+      endif
+      let filter = 'v:val =~ "^!_TAG_" || (' . join(filters, ' && ') . ')'
+      let filtered = filter(copy(lines), filter)
+      if lines != filtered
+        call writefile(filtered, tagsfile)
+      endif
+      call xolox#timer#stop(start_filter, "easytags.vim: Filtered tags file in %s second(s)")
+    endif
+    if supported_filetype
+      call add(command, '--language-force=' . easytags#to_ctags_ft(&ft))
+      call add(command, shellescape(filename))
+      let listing = system(join(command))
+      if v:shell_error
+        let message = "Failed to update tags file! (%s)"
+        throw printf(message, listing)
+      endif
+    endif
+    call xolox#timer#stop(start, "easytags.vim: Updated tags in %s second(s)")
+  endif
+endfunction
+
+function! easytags#highlight_cmd() " {{{1
+  if exists('g:syntax_on') && has_key(s:tagkinds, &ft)
+    let start = xolox#timer#start()
+    let taglist = filter(taglist('.'), "get(v:val, 'language', '') ==? &ft")
+    for tagkind in s:tagkinds[&ft]
+      let hlgroup_tagged = tagkind.hlgroup . 'Tag'
+      if hlexists(hlgroup_tagged)
+        execute 'syntax clear' hlgroup_tagged
+      else
+        execute 'highlight def link' hlgroup_tagged tagkind.hlgroup
+      endif
+      let matches = filter(copy(taglist), tagkind.filter)
+      call map(matches, 'xolox#escape#pattern(get(v:val, "name"))')
+      let pattern = tagkind.pattern_prefix . '\%(' . join(s:unique(matches), '\|') . '\)' . tagkind.pattern_suffix
+      let command = 'syntax match %s /%s/ containedin=ALLBUT,.*String.*,.*Comment.*'
+      execute printf(command, hlgroup_tagged, escape(pattern, '/'))
+    endfor
+    redraw
+    call xolox#timer#stop(start, "easytags.vim: Highlighted tags in %s second(s)")
+  endif
+endfunction
+
+function! s:unique(list)
+	let index = 0
+	while index < len(a:list)
+		let value = a:list[index]
+		let match = index(a:list, value, index+1)
+		if match >= 0
+			call remove(a:list, match)
+		else
+			let index += 1
+		endif
+		unlet value
+	endwhile
+	return a:list
+endfunction
+
+function! easytags#get_tagsfile() " {{{1
+  let tagsfile = expand(g:easytags_file)
+  if filereadable(tagsfile) && filewritable(tagsfile) != 1
+    let message = "easytags.vim: The tags file isn't writable! (%s)"
+    echoerr printf(message, fnamemodify(directory, ':~'))
+  endif
+  return tagsfile
+endfunction
+
+function! easytags#define_tagkind(object) " {{{1
+  if !has_key(a:object, 'pattern_prefix')
+    let a:object.pattern_prefix = '\C\<'
+  endif
+  if !has_key(a:object, 'pattern_suffix')
+    let a:object.pattern_suffix = '\>'
+  endif
+  if !has_key(s:tagkinds, a:object.filetype)
+    let s:tagkinds[a:object.filetype] = []
+  endif
+  call add(s:tagkinds[a:object.filetype], a:object)
+endfunction
+
+function! easytags#map_filetypes(vim_ft, ctags_ft) " {{{1
+  call add(s:vim_filetypes, a:vim_ft)
+  call add(s:ctags_filetypes, a:ctags_ft)
+endfunction
+
+function! easytags#to_vim_ft(ctags_ft) " {{{1
+  let type = tolower(a:ctags_ft)
+  let index = index(s:ctags_filetypes, type)
+  return index >= 0 ? s:vim_filetypes[index] : type
+endfunction
+
+function! easytags#to_ctags_ft(vim_ft) " {{{1
+  let type = tolower(a:vim_ft)
+  let index = index(s:vim_filetypes, type)
+  return index >= 0 ? s:ctags_filetypes[index] : type
+endfunction
+
+" Built-in file type & tag kind definitions. {{{1
+
+if !exists('s:tagkinds')
+
+  let s:vim_filetypes = []
+  let s:ctags_filetypes = []
+  call easytags#map_filetypes('cpp', 'c++')
+  call easytags#map_filetypes('cs', 'c#')
+  call easytags#map_filetypes(exists('filetype_asp') ? filetype_asp : 'aspvbs', 'asp')
+
+  let s:tagkinds = {}
+
+  " Enable line continuation.
+  let s:cpo_save = &cpo
+  set cpo&vim
+
+  " Lua. {{{2
+
+  call easytags#define_tagkind({
+        \ 'filetype': 'lua',
+        \ 'hlgroup': 'luaFunc',
+        \ 'filter': 'get(v:val, "kind") ==# "f"'})
+
+  " C. {{{2
+
+  call easytags#define_tagkind({
+        \ 'filetype': 'c',
+        \ 'hlgroup': 'cType',
+        \ 'filter': 'get(v:val, "kind") =~# "[cgstu]"'})
+
+  call easytags#define_tagkind({
+        \ 'filetype': 'c',
+        \ 'hlgroup': 'cPreProc',
+        \ 'filter': 'get(v:val, "kind") ==# "d"'})
+
+  call easytags#define_tagkind({
+        \ 'filetype': 'c',
+        \ 'hlgroup': 'cFunction',
+        \ 'filter': 'get(v:val, "kind") =~# "[fp]"'})
+
+  highlight def link cFunction Function
+
+  " PHP. {{{2
+
+  call easytags#define_tagkind({
+        \ 'filetype': 'php',
+        \ 'hlgroup': 'phpFunctions',
+        \ 'filter': 'get(v:val, "kind") ==# "f"'})
+
+  call easytags#define_tagkind({
+        \ 'filetype': 'php',
+        \ 'hlgroup': 'phpClasses',
+        \ 'filter': 'get(v:val, "kind") ==# "c"'})
+
+  " Vim script. {{{2
+
+  call easytags#define_tagkind({
+        \ 'filetype': 'vim',
+        \ 'hlgroup': 'vimAutoGroup',
+        \ 'filter': 'get(v:val, "kind") ==# "a"'})
+
+  highlight def link vimAutoGroup vimAutoEvent
+
+  call easytags#define_tagkind({
+        \ 'filetype': 'vim',
+        \ 'hlgroup': 'vimCommand',
+        \ 'filter': 'get(v:val, "kind") ==# "c"',
+        \ 'pattern_prefix': '\(\(^\|\s\):\?\)\@<=',
+        \ 'pattern_suffix': '\(!\?\(\s\|$\)\)\@='})
+
+  " Exuberant Ctags doesn't mark script local functions in Vim scripts as
+  " "static". When your tags file contains search patterns this plug-in can use
+  " those search patterns to check which Vim script functions are defined
+  " globally and which script local.
+
+  call easytags#define_tagkind({
+        \ 'filetype': 'vim',
+        \ 'hlgroup': 'vimFuncName',
+        \ 'filter': 'get(v:val, "kind") ==# "f" && get(v:val, "cmd") !~? ''<sid>\w\|\<s:\w''',
+        \ 'pattern_prefix': '\C\%(\<s:\|<[sS][iI][dD]>\)\@<!\<'})
+
+  call easytags#define_tagkind({
+        \ 'filetype': 'vim',
+        \ 'hlgroup': 'vimScriptFuncName',
+        \ 'filter': 'get(v:val, "kind") ==# "f" && get(v:val, "cmd") =~? ''<sid>\w\|\<s:\w''',
+        \ 'pattern_prefix': '\C\%(\<s:\|<[sS][iI][dD]>\)'})
+
+  highlight def link vimScriptFuncName vimFuncName
+
+  " Python. {{{2
+
+  call easytags#define_tagkind({
+        \ 'filetype': 'python',
+        \ 'hlgroup': 'pythonFunction',
+        \ 'filter': 'get(v:val, "kind") ==# "f"',
+        \ 'pattern_prefix': '\%(\<def\s\+\)\@<!\<'})
+
+  call easytags#define_tagkind({
+        \ 'filetype': 'python',
+        \ 'hlgroup': 'pythonMethod',
+        \ 'filter': 'get(v:val, "kind") ==# "m"',
+        \ 'pattern_prefix': '\.\@<='})
+
+  highlight def link pythonMethodTag pythonFunction
+
+  " Restore "cpoptions".
+  let &cpo = s:cpo_save
+  unlet s:cpo_save
+
+endif
+
+" vim: ts=2 sw=2 et