Fix disabling autoindent, closes #541

ftdetect/polyglot.vim

@@ -1777,20 +1777,17 @@ au BufNewFile,BufRead,StdinReadPost *
   \ | call polyglot#Heuristics() | endif
 
 
-if v:version < 700 || &cp
-  finish
-endif
+if !has_key(s:disabled_packages, 'helm')
 
+  " Code below re-implements sleuth for vim-polyglot
+  let g:loaded_sleuth = 1
 
-" Code below re-implements sleuth for vim-polyglot
-let g:loaded_sleuth = 1
-
-" Makes shiftwidth to be synchronized with tabstop by default
-if &shiftwidth == &tabstop
+  " Makes shiftwidth to be synchronized with tabstop by default
+  if &shiftwidth == &tabstop
     let &shiftwidth = 0
-endif
+  endif
 
-function! s:guess(lines) abort
+  function! s:guess(lines) abort
     let options = {}
     let ccomment = 0
     let podcomment = 0
@@ -1886,9 +1883,9 @@ function! s:guess(lines) abort
     endif
 
     return 0
-endfunction
+  endfunction
 
-function! s:detect_indent() abort
+  function! s:detect_indent() abort
     if &buftype ==# 'help'
       return
     endif
@@ -1923,14 +1920,15 @@ function! s:detect_indent() abort
       let dir = fnamemodify(dir, ':h')
       let level -= 1
     endwhile
-endfunction
+  endfunction
 
-setglobal smarttab
+  setglobal smarttab
 
-augroup polyglot
+  augroup polyglot
     autocmd!
     autocmd FileType * call s:detect_indent()
-augroup END
+  augroup END
+endif
 
 " restore Vi compatibility settings
 let &cpo = s:cpo_save