Update

ftplugin/crystal.vim

@@ -40,6 +40,30 @@ setlocal errorformat=
   \%C%p^,
   \%-C%.%#
 
+let g:crystal_compiler_command = get(g:, 'crystal_compiler_command', 'crystal')
+let g:crystal_auto_format = get(g:, 'crystal_auto_format', 0)
+
+command! -buffer -nargs=* CrystalImpl echo crystal_lang#impl(expand('%'), getpos('.'), <q-args>).output
+command! -buffer -nargs=0 CrystalDef call crystal_lang#jump_to_definition(expand('%'), getpos('.'))
+command! -buffer -nargs=* CrystalContext echo crystal_lang#context(expand('%'), getpos('.'), <q-args>).output
+command! -buffer -nargs=* CrystalHierarchy echo crystal_lang#type_hierarchy(expand('%'), <q-args>)
+command! -buffer -nargs=? CrystalSpecSwitch call crystal_lang#switch_spec_file(<f-args>)
+command! -buffer -nargs=? CrystalSpecRunAll call crystal_lang#run_all_spec(<f-args>)
+command! -buffer -nargs=? CrystalSpecRunCurrent call crystal_lang#run_current_spec(<f-args>)
+command! -buffer -nargs=* -bar CrystalFormat call crystal_lang#format(<q-args>)
+
+nnoremap <Plug>(crystal-jump-to-definition) :<C-u>CrystalDef<CR>
+nnoremap <Plug>(crystal-show-context) :<C-u>CrystalContext<CR>
+nnoremap <Plug>(crystal-spec-switch) :<C-u>CrystalSpecSwitch<CR>
+nnoremap <Plug>(crystal-spec-run-all) :<C-u>CrystalSpecRunAll<CR>
+nnoremap <Plug>(crystal-spec-run-current) :<C-u>CrystalSpecRunCurrent<CR>
+nnoremap <Plug>(crystal-format) :<C-u>CrystalFormat<CR>
+
+augroup plugin-ft-crystal
+    autocmd!
+    autocmd BufWritePre <buffer> if g:crystal_auto_format | CrystalFormat | endif
+augroup END
+
 if get(g:, 'crystal_define_mappings', 1)
   nmap <buffer>gd <Plug>(crystal-jump-to-definition)
   nmap <buffer>gc <Plug>(crystal-show-context)

ftplugin/javascript.vim

@@ -1,5 +1,8 @@
 if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'javascript') == -1
   
 setlocal suffixesadd+=.js
+if (v:version < 704 || (v:version == 704 && !has('patch002'))) && exists('&regexpengine')
+  set re=1
+end
 
 endif

ftplugin/slim.vim

@@ -0,0 +1,12 @@
+if !exists('g:polyglot_disabled') || index(g:polyglot_disabled, 'slim') == -1
+  
+if exists("b:did_ftplugin")
+  finish
+endif
+let b:did_ftplugin = 1
+
+let b:undo_ftplugin = "setl isk<"
+
+setlocal iskeyword+=-
+
+endif