mchung/heroku-buildpack-wordpress — pull request #77 by okko (2014-06-17 08:58:03+00:00)
Title: Prefix buildpack env vars

Buildpack variables can collide in the running app, especially S3_BUCKET.
Prefix buildpack environment variables with BUILDPACK_ to avoid collision.

Warn in compile if old configuration variables are used and instruct the user to change the variable name with heroku set and heroku unset.