You need a start of line check in this regex (like was added in the
others) to allow things like `#{bin}/clang++`.

rubocop.yml: reduce tap maximum line length.

rubocop: disable length checks.

Unhide readall and update-reset from manpage.

java_requirement: support prompting users to install legacy Java casks

These are both tools that end-users can find useful on occasion so it
doesn't make sense to hide them.

We should keep these enabled for Homebrew/brew but for taps these just
end up being annoying and making `brew style` fail for little benefit

lines_cop: Fix detection of negated expression

This enhances the Java requirement to support prompting the user
to install the correct legacy Java version via Cask for formulae
that don't yet work with the latest version of Java. Previously,
even if the formula had a strict requirement that a specific,
older version of Java be used, the messaging would tell the user to
`brew cask install java` (i.e. to install the latest version of Java),
which wouldn't actually satisfy the requirement.

docs: fix poor visibility in syntax highlighting

rubocop-cask: 0.15.1

lines_cop: fix clang detection.

Rubocop 0.51

Fixes querying Cask commands' help

We only care about e.g. `gcc`/`llvm-gcc`/`clang` being at the beginning
of a `system` call and not anywhere within the string.

github: require formula name to be in issue title

audit: Port line_problems to rubocop and add tests part 4

leaves: account for requirements

build_environment: add Linux-specific environment variables

gpg: a little intentional yak shaving

Checksum_Deprecation: tweak phrasing/explanation/etc

pull: Fix pull --bottle 1234