Running brew audit --strict --online on a formula with a GitHub
homepage/url would crash if HOMEBREW_NO_GITHUB_API is set because
GitHub.repository returns `nil` and the audit code assumes it always
returns a hash.
ClosesHomebrew/homebrew#50054.
Signed-off-by: Baptiste Fontaine <batifon@yahoo.fr>
We allow certain special regex characters in formula names, and if
those aren't escaped when interpolating them into a regex, they'll be
interpreted as special regex characters.
This can cause regex compile errors on Ruby 1.8 (for example, with
"libxml++3", which has nested match characters), and more subtle
matching bugs in general.
Refs an issue surfaced in Homebrew/homebrew#48744.
ClosesHomebrew/homebrew#49005.
Signed-off-by: Misty De Meo <mistydemeo@gmail.com>
