Which programming language is used to express the most anger?

The article is here: http://geeksta.net/geeklog/exploring-expressions-emotions-gi...

The article has more graphs, satisfying some curiosities. This specific graph has been obtained applying a regex[1] to a sample of github commit messages.

[1] (?i)\b(a+rgh|angry|annoyed|annoying|appalled|bitter|cranky|hate|hating|mad)\b'

Surprising that the numbers are so low. It is frustrating to program as the devil hides in the details.

I recall PG wrote somewhere that Perl looks like a cartoon character swearing.