--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/.chezmoitemplates/au.lua	Sun Sep 19 14:57:14 2021 +0200
@@ -0,0 +1,50 @@
+--
+-- Copied from https://gist.github.com/numToStr/1ab83dd2e919de9235f9f774ef8076da
+--
+local cmd = vim.api.nvim_command
+
+local function autocmd(this, event, spec)
+  local is_table = type(spec) == 'table'
+  local pattern = is_table and spec[1] or '*'
+  local action = is_table and spec[2] or spec
+  if type(action) == 'function' then
+    action = this.set(action)
+  end
+  local e = type(event) == 'table' and table.concat(event, ',') or event
+  cmd('autocmd ' .. e .. ' ' .. pattern .. ' ' .. action)
+end
+
+local S = {
+  __au = {},
+}
+
+local X = setmetatable({}, {
+  __index = S,
+  __newindex = autocmd,
+  __call = autocmd,
+})
+
+function S.exec(id)
+  S.__au[id]()
+end
+
+function S.set(fn)
+  local id = string.format('%p', fn)
+  S.__au[id] = fn
+  return string.format('lua require("au").exec("%s")', id)
+end
+
+function S.group(grp, cmds)
+  cmd('augroup ' .. grp)
+  cmd 'autocmd!'
+  if type(cmds) == 'function' then
+    cmds(X)
+  else
+    for _, au in ipairs(cmds) do
+      autocmd(S, au[1], { au[2], au[3] })
+    end
+  end
+  cmd 'augroup END'
+end
+
+return X