According to headers in files, there are at least the following licenses: vim GPL-2 GPL-2+ GPL-3 GPL-3+ MIT BSD WTFPL-2 public-domain However, most files don't have any license information.
> vim > GPL-2 > GPL-2+ > GPL-3 > GPL-3+ > MIT > BSD > WTFPL-2 > public-domain These were already in LICENSE, thanks radhermit. I've added also vim.org there. Let's consider this bug fixed, since I don't think that we'll get anything better.