require('cloak').setup({
  enabled = true,
  cloak_character = '*',
  -- The applied highlight group (colors) on the cloaking, see `:h highlight`.
  highlight_group = 'Comment',
  -- Applies the length of the replacement characters for all matched
  -- patterns, defaults to the length of the matched pattern.
  cloak_length = nil, -- Provide a number if you want to hide the true length of the value.
  -- Wether it should try every pattern to find the best fit or stop after the first.
  try_all_patterns = true,
  patterns = {
    {
      -- Match any file starting with '.env'.
      -- This can be a table to match multiple file patterns.
      file_pattern = '.env*',
      -- Match an equals sign and any character after it.
      -- This can also be a table of patterns to cloak,
      -- example: cloak_pattern = { ':.+', '-.+' } for yaml files.
      cloak_pattern = '=.+',
      -- A function, table or string to generate the replacement.
      -- The actual replacement will contain the 'cloak_character'
      -- where it doesn't cover the original text.
      -- If left emtpy the legacy behavior of keeping the first character is retained.
      replace = nil,
    },
  },
})

patterns = {
  file_pattern = '.env*',
  cloak_pattern = {
    '(a=).+',
    { '(b=).+' },
    { '(c=).+', replace = '[inner] %1' }
    -- The outer `replace` could also be specified here instead
  },
  replace = '[outer] %1',
}