install pathogen.vim

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+" pathogen.vim - path option manipulation
+" Maintainer:   Tim Pope <http://tpo.pe/>
+" Version:      2.0
+
+" Install in ~/.vim/autoload (or ~\vimfiles\autoload).
+"
+" For management of individually installed plugins in ~/.vim/bundle (or
+" ~\vimfiles\bundle), adding `call pathogen#infect()` to your .vimrc
+" prior to `filetype plugin indent on` is the only other setup necessary.
+"
+" The API is documented inline below.  For maximum ease of reading,
+" :set foldmethod=marker
+
+if exists("g:loaded_pathogen") || &cp
+  finish
+endif
+let g:loaded_pathogen = 1
+
+" Point of entry for basic default usage.  Give a directory name to invoke
+" pathogen#runtime_append_all_bundles() (defaults to "bundle"), or a full path
+" to invoke pathogen#runtime_prepend_subdirectories().  Afterwards,
+" pathogen#cycle_filetype() is invoked.
+function! pathogen#infect(...) abort " {{{1
+  let source_path = a:0 ? a:1 : 'bundle'
+  if source_path =~# '[\\/]'
+    call pathogen#runtime_prepend_subdirectories(source_path)
+  else
+    call pathogen#runtime_append_all_bundles(source_path)
+  endif
+  call pathogen#cycle_filetype()
+endfunction " }}}1
+
+" Split a path into a list.
+function! pathogen#split(path) abort " {{{1
+  if type(a:path) == type([]) | return a:path | endif
+  let split = split(a:path,'\\\@<!\%(\\\\\)*\zs,')
+  return map(split,'substitute(v:val,''\\\([\\,]\)'',''\1'',"g")')
+endfunction " }}}1
+
+" Convert a list to a path.
+function! pathogen#join(...) abort " {{{1
+  if type(a:1) == type(1) && a:1
+    let i = 1
+    let space = ' '
+  else
+    let i = 0
+    let space = ''
+  endif
+  let path = ""
+  while i < a:0
+    if type(a:000[i]) == type([])
+      let list = a:000[i]
+      let j = 0
+      while j < len(list)
+        let escaped = substitute(list[j],'[,'.space.']\|\\[\,'.space.']\@=','\\&','g')
+        let path .= ',' . escaped
+        let j += 1
+      endwhile
+    else
+      let path .= "," . a:000[i]
+    endif
+    let i += 1
+  endwhile
+  return substitute(path,'^,','','')
+endfunction " }}}1
+
+" Convert a list to a path with escaped spaces for 'path', 'tag', etc.
+function! pathogen#legacyjoin(...) abort " {{{1
+  return call('pathogen#join',[1] + a:000)
+endfunction " }}}1
+
+" Remove duplicates from a list.
+function! pathogen#uniq(list) abort " {{{1
+  let i = 0
+  let seen = {}
+  while i < len(a:list)
+    if (a:list[i] ==# '' && exists('empty')) || has_key(seen,a:list[i])
+      call remove(a:list,i)
+    elseif a:list[i] ==# ''
+      let i += 1
+      let empty = 1
+    else
+      let seen[a:list[i]] = 1
+      let i += 1
+    endif
+  endwhile
+  return a:list
+endfunction " }}}1
+
+" \ on Windows unless shellslash is set, / everywhere else.
+function! pathogen#separator() abort " {{{1
+  return !exists("+shellslash") || &shellslash ? '/' : '\'
+endfunction " }}}1
+
+" Convenience wrapper around glob() which returns a list.
+function! pathogen#glob(pattern) abort " {{{1
+  let files = split(glob(a:pattern),"\n")
+  return map(files,'substitute(v:val,"[".pathogen#separator()."/]$","","")')
+endfunction "}}}1
+
+" Like pathogen#glob(), only limit the results to directories.
+function! pathogen#glob_directories(pattern) abort " {{{1
+  return filter(pathogen#glob(a:pattern),'isdirectory(v:val)')
+endfunction "}}}1
+
+" Turn filetype detection off and back on again if it was already enabled.
+function! pathogen#cycle_filetype() " {{{1
+  if exists('g:did_load_filetypes')
+    filetype off
+    filetype on
+  endif
+endfunction " }}}1
+
+" Checks if a bundle is 'disabled'. A bundle is considered 'disabled' if
+" its 'basename()' is included in g:pathogen_disabled[]' or ends in a tilde.
+function! pathogen#is_disabled(path) " {{{1
+  if a:path =~# '\~$'
+    return 1
+  elseif !exists("g:pathogen_disabled")
+    return 0
+  endif
+  let sep = pathogen#separator()
+  return index(g:pathogen_disabled, strpart(a:path, strridx(a:path, sep)+1)) != -1
+endfunction "}}}1
+
+" Prepend all subdirectories of path to the rtp, and append all 'after'
+" directories in those subdirectories.
+function! pathogen#runtime_prepend_subdirectories(path) " {{{1
+  let sep    = pathogen#separator()
+  let before = filter(pathogen#glob_directories(a:path.sep."*"), '!pathogen#is_disabled(v:val)')
+  let after  = filter(pathogen#glob_directories(a:path.sep."*".sep."after"), '!pathogen#is_disabled(v:val[0:-7])')
+  let rtp = pathogen#split(&rtp)
+  let path = expand(a:path)
+  call filter(rtp,'v:val[0:strlen(path)-1] !=# path')
+  let &rtp = pathogen#join(pathogen#uniq(before + rtp + after))
+  return &rtp
+endfunction " }}}1
+
+" For each directory in rtp, check for a subdirectory named dir.  If it
+" exists, add all subdirectories of that subdirectory to the rtp, immediately
+" after the original directory.  If no argument is given, 'bundle' is used.
+" Repeated calls with the same arguments are ignored.
+function! pathogen#runtime_append_all_bundles(...) " {{{1
+  let sep = pathogen#separator()
+  let name = a:0 ? a:1 : 'bundle'
+  if "\n".s:done_bundles =~# "\\M\n".name."\n"
+    return ""
+  endif
+  let s:done_bundles .= name . "\n"
+  let list = []
+  for dir in pathogen#split(&rtp)
+    if dir =~# '\<after$'
+      let list +=  filter(pathogen#glob_directories(substitute(dir,'after$',name,'').sep.'*[^~]'.sep.'after'), '!pathogen#is_disabled(v:val[0:-7])') + [dir]
+    else
+      let list +=  [dir] + filter(pathogen#glob_directories(dir.sep.name.sep.'*[^~]'), '!pathogen#is_disabled(v:val)')
+    endif
+  endfor
+  let &rtp = pathogen#join(pathogen#uniq(list))
+  return 1
+endfunction
+
+let s:done_bundles = ''
+" }}}1
+
+" Invoke :helptags on all non-$VIM doc directories in runtimepath.
+function! pathogen#helptags() " {{{1
+  let sep = pathogen#separator()
+  for dir in pathogen#split(&rtp)
+    if (dir.sep)[0 : strlen($VIMRUNTIME)] !=# $VIMRUNTIME.sep && filewritable(dir.sep.'doc') == 2 && !empty(filter(split(glob(dir.sep.'doc'.sep.'*'),"\n>"),'!isdirectory(v:val)')) && (!filereadable(dir.sep.'doc'.sep.'tags') || filewritable(dir.sep.'doc'.sep.'tags'))
+      helptags `=dir.'/doc'`
+    endif
+  endfor
+endfunction " }}}1
+
+command! -bar Helptags :call pathogen#helptags()
+
+" Like findfile(), but hardcoded to use the runtimepath.
+function! pathogen#runtime_findfile(file,count) "{{{1
+  let rtp = pathogen#join(1,pathogen#split(&rtp))
+  return fnamemodify(findfile(a:file,rtp,a:count),':p')
+endfunction " }}}1
+
+" Backport of fnameescape().
+function! pathogen#fnameescape(string) " {{{1
+  if exists('*fnameescape')
+    return fnameescape(a:string)
+  elseif a:string ==# '-'
+    return '\-'
+  else
+    return substitute(escape(a:string," \t\n*?[{`$\\%#'\"|!<"),'^[+>]','\\&','')
+  endif
+endfunction " }}}1
+
+function! s:find(count,cmd,file,lcd) " {{{1
+  let rtp = pathogen#join(1,pathogen#split(&runtimepath))
+  let file = pathogen#runtime_findfile(a:file,a:count)
+  if file ==# ''
+    return "echoerr 'E345: Can''t find file \"".a:file."\" in runtimepath'"
+  elseif a:lcd
+    let path = file[0:-strlen(a:file)-2]
+    execute 'lcd `=path`'
+    return a:cmd.' '.pathogen#fnameescape(a:file)
+  else
+    return a:cmd.' '.pathogen#fnameescape(file)
+  endif
+endfunction " }}}1
+
+function! s:Findcomplete(A,L,P) " {{{1
+  let sep = pathogen#separator()
+  let cheats = {
+        \'a': 'autoload',
+        \'d': 'doc',
+        \'f': 'ftplugin',
+        \'i': 'indent',
+        \'p': 'plugin',
+        \'s': 'syntax'}
+  if a:A =~# '^\w[\\/]' && has_key(cheats,a:A[0])
+    let request = cheats[a:A[0]].a:A[1:-1]
+  else
+    let request = a:A
+  endif
+  let pattern = substitute(request,'\'.sep,'*'.sep,'g').'*'
+  let found = {}
+  for path in pathogen#split(&runtimepath)
+    let path = expand(path, ':p')
+    let matches = split(glob(path.sep.pattern),"\n")
+    call map(matches,'isdirectory(v:val) ? v:val.sep : v:val')
+    call map(matches,'expand(v:val, ":p")[strlen(path)+1:-1]')
+    for match in matches
+      let found[match] = 1
+    endfor
+  endfor
+  return sort(keys(found))
+endfunction " }}}1
+
+command! -bar -bang -range=1 -nargs=1 -complete=customlist,s:Findcomplete Ve       :execute s:find(<count>,'edit<bang>',<q-args>,0)
+command! -bar -bang -range=1 -nargs=1 -complete=customlist,s:Findcomplete Vedit    :execute s:find(<count>,'edit<bang>',<q-args>,0)
+command! -bar -bang -range=1 -nargs=1 -complete=customlist,s:Findcomplete Vopen    :execute s:find(<count>,'edit<bang>',<q-args>,1)
+command! -bar -bang -range=1 -nargs=1 -complete=customlist,s:Findcomplete Vsplit   :execute s:find(<count>,'split',<q-args>,<bang>1)
+command! -bar -bang -range=1 -nargs=1 -complete=customlist,s:Findcomplete Vvsplit  :execute s:find(<count>,'vsplit',<q-args>,<bang>1)
+command! -bar -bang -range=1 -nargs=1 -complete=customlist,s:Findcomplete Vtabedit :execute s:find(<count>,'tabedit',<q-args>,<bang>1)
+command! -bar -bang -range=1 -nargs=1 -complete=customlist,s:Findcomplete Vpedit   :execute s:find(<count>,'pedit',<q-args>,<bang>1)
+command! -bar -bang -range=1 -nargs=1 -complete=customlist,s:Findcomplete Vread    :execute s:find(<count>,'read',<q-args>,<bang>1)
+
+" vim:set ft=vim ts=8 sw=2 sts=2: