caskroom/homebrew-cask — pull request #6431 by rolandwalker (2014-10-01 15:51:00+00:00)
Title: Add license stanza for 1921 Casks

Most are non-specific (category) values or `:unknown`

Anything using a GitHub/BitBucket/SourceForge URL was assumed to be `:oss`. There could be some errors there. Many obvious cases (eg Firefox) use `:oss` when a more specific license is available. We will have to depend on Cask authors to make corrections to these values over time.