adding g:parinfer_mode - adding airline support for mode

plugin/parinfer.vim

@@ -1,9 +1,34 @@
+let g:parinfer_mode = "indent"
+
+function! s:indent()
+  if has('nvim') && g:parinfer_mode != "off"
+    try
+      silent undojoin
+    catch
+    endtry
+    let l:lines = ParinferIndent("changed")
+    if !empty(lines)
+      call setline(1,lines)
+    endif
+  endif
+endfunction
+
 augroup ClojureParinfer
   autocmd FileType clojure
-        \ :autocmd! ClojureParinfer BufEnter <buffer> 
-        \ :let lines = ParinferIndent("enter") | if !empty(lines) | call setline(1,lines) | endif | unlet lines
+        \ :autocmd! ClojureParinfer BufEnter <buffer>
+        \ :call <SID>indent()
 
   autocmd FileType clojure
-        \ :autocmd! TextChanged,TextChangedI <buffer>
-        \ :try | silent undojoin | catch | endtry | let lines = ParinferIndent("changed") | if !empty(lines) | call setline(1,lines) | endif | unlet lines
+        \ :autocmd! ClojureParinfer TextChanged,TextChangedI <buffer>
+        \ :call <SID>indent()
 augroup END
+
+if (exists('g:loaded_airline') && g:loaded_airline)
+  function! ParinferAirline(...)
+    if &filetype == "clojure"
+      let w:airline_section_a = g:airline_section_a . ' %{g:parinfer_mode}'
+    endif
+  endfunction
+
+  call airline#add_statusline_func('ParinferAirline')
+endif