[vim] add sensible indentation defaults

.vimrc

@@ -198,4 +198,18 @@ nmap Y <Plug>(operator-flashy)$
 let g:vimwiki_global_ext = 0
 let g:vimwiki_list = [{'path': '~/Documents/notes/', 'syntax': 'markdown', 'ext': '.md'}]
 
+" vim-sleuth
+
+" https://github.com/tpope/vim-sleuth/pull/55
+if get(g:, '_has_set_default_indent_settings', 0) == 0
+  " Set the indenting level to 2 spaces for the following file types.
+  " autocmd FileType typescript,javascript,jsx,tsx,css,html,ruby,elixir,kotlin,vim,plantuml
+  "       \ setlocal expandtab tabstop=2 shiftwidth=2
+  set expandtab
+  set tabstop=2
+  set shiftwidth=2
+  let g:_has_set_default_indent_settings = 1
+endif
+
 " }}}
+