Update

ftplugin/juliadoc.vim

@@ -0,0 +1,34 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'julia') == -1
+  
+" Vim filetype plugin file
+" Language: Julia document
+
+if exists("b:did_ftplugin")
+  finish
+endif
+let b:did_ftplugin = 1
+
+let s:save_cpo = &cpo
+set cpo-=C
+
+setlocal conceallevel=2
+setlocal concealcursor=nc
+setlocal wrap
+
+if !exists('b:undo_ftplugin')
+  let b:undo_ftplugin = ''
+endif
+let b:undo_ftplugin .= 'setlocal conceallevel< concealcursor< wrap<'
+
+" Lookup documents
+nnoremap <silent><buffer> <Plug>(JuliaDocPrompt) :<C-u>call julia#doc#prompt()<CR>
+command! -nargs=1 -buffer -complete=customlist,julia#doc#complete JuliaDoc call julia#doc#open(<q-args>)
+command! -nargs=1 -buffer JuliaDocKeywordprg call julia#doc#keywordprg(<q-args>)
+setlocal keywordprg=:JuliaDocKeywordprg
+let b:undo_ftplugin .= " | setlocal keywordprg<"
+let b:undo_ftplugin .= " | delcommand JuliaDoc | delcommand JuliaDocKeywordprg"
+
+let &cpo = s:save_cpo
+unlet s:save_cpo
+
+endif