'use strict'

module.exports = escapes

var defaults = [
  '\\',
  '`',
  '*',
  '{',
  '}',
  '[',
  ']',
  '(',
  ')',
  '#',
  '+',
  '-',
  '.',
  '!',
  '_',
  '>'
]

var gfm = defaults.concat(['~', '|'])

var commonmark = gfm.concat([
  '\n',
  '"',
  '$',
  '%',
  '&',
  "'",
  ',',
  '/',
  ':',
  ';',
  '<',
  '=',
  '?',
  '@',
  '^'
])

escapes.default = defaults
escapes.gfm = gfm
escapes.commonmark = commonmark

// Get markdown escapes.
function escapes(options) {
  var settings = options || {}

  if (settings.commonmark) {
    return commonmark
  }

  return settings.gfm ? gfm : defaults
}