Closes #2199.

Signed-off-by: Misty De Meo <mistydemeo@gmail.com>

Ref: https://sourceforge.net/blog/introducing-https-for-project-websites/

These are no longer necessary.

This will allow us to have global setup and teardown for tests.

For example, we can automatically clear caches after each test, to avoid
annoying intermittent failures like #1879 and #1886.

Replace `homebrew` with `brew`, `homebrew-core`, or `legacy-homebrew`
depending on context.

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.

Closes Homebrew/homebrew#50054.

Signed-off-by: Baptiste Fontaine <batifon@yahoo.fr>

Closes Homebrew/homebrew#49404.

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.

Closes Homebrew/homebrew#49005.

Signed-off-by: Misty De Meo <mistydemeo@gmail.com>

Closes Homebrew/homebrew#48748.

Signed-off-by: Baptiste Fontaine <batifon@yahoo.fr>

Closes Homebrew/homebrew#48435.

Signed-off-by: Baptiste Fontaine <batifon@yahoo.fr>

Closes Homebrew/homebrew#48302.

Signed-off-by: Baptiste Fontaine <batifon@yahoo.fr>