This Ruby program scrapes the published API keywords from the Processing reference and compares it to the Processing Sublime Text Package syntax file. It essentially displays a diff of the two, to show you what exists in the API and is not in the package; and what is in the package syntax but no longer exists in the API.
p5_st_util compare PATH/TO/Processing.tmLanguage
The program will display the relative complements of the two sets of syntax keywords.
Released under the MIT License. See the LICENSE file for further details.