mozilla/bedrock — pull request #1092 by pmclanahan (2013-07-19 19:24:34+00:00)
Title: Bug 894055: Add funnelcake parameter to bedrock URLs.

Now if a page has a download button on it, and the url includes the query
param `f=[0..9999]`, then that number will end up on download links in the
form `product=firefox-stub-f999`. The ID must be numeric and not exceed 4 digits.