Open current draft's first URL

script

// based on https://stackoverflow.com/questions/33211233/how-to-detect-and-get-url-on-string-javascript
// for an alternative method: see https://stackoverflow.com/questions/11209016/javascript-extract-urls-from-string-inc-querystring-and-return-array

let matches = draft.content.match(/\bhttps?:\/\/\S+/gi);
let first_match = matches[0]

// uncomment to check matches 
// alert(matches[0])

app.openURL(matches[0])