felixge/node-airbrake — pull request #52 by zenbro (2014-04-29 14:51:00+00:00)
Title: Add custom user-agent support

For now, __Airbrake.prototype.cgiDataVars__ adds prefix '__err.__' to all custom properties, so it's impossible to add __HTTP_USER_AGENT__ property from Error.
Here is some workarounds.