'use strict'

module.exports = enclose

var quotationMark = '"'
var apostrophe = "'"

// There is currently no way to support nested delimiters across Markdown.pl,
// CommonMark, and GitHub (RedCarpet).  The following code supports Markdown.pl
// and GitHub.
// CommonMark is not supported when mixing double- and single quotes inside a
// title.
function enclose(title) {
  var delimiter =
    title.indexOf(quotationMark) === -1 ? quotationMark : apostrophe
  return delimiter + title + delimiter
}