This probably has to wait until 2.7.0 now and will require a bunch of
formula changes/deprecations but we should probably start moving in this
direction given we're not installing any of these on our CI any more.
Use `system "foo", "bar"` instead of `system "foo bar"`. Also applies to
`Utils.popen_read` and `Utils.popen_write` commands. RuboCop can
automatically fix these problems.
When running Utils.popen (or similar popen command), having a line like
"SHELL=bash ..." doesn't work properly. Instead, use:
`Utils.popen({ "SHELL" => "bash" }, "...")`
RuboCop requires using Utils.safe_popen_read and Utils.safe_popen_write
instead of Utils.popen_read and Utils.popen_write respectively.
Using the "safe" version means that an error will be shown if the
command fails. Previously, when using `popen_read`, a failed command can
go unnoticed and have negative consequences that go undetected (as
happened for pipend in
https://github.com/Homebrew/homebrew-core/pull/55682)
RuboCop does not require Utils.safe_popen_read in a test do block
because there can be some legitimate uses for Utils.popen_read in these
cases.
In a number of Cask specs, the value of the `homepage` stanza is currently set
to https://example.com. As of 2018-11-28, the TLS certificate served by
example.com seems to be expired, possibly due to an oversight on ICANN’s side.
While the certificate is certainly going to be renewed soon, it would be
desirable for Homebrew’s test result to be less dependent on ICANN’s actions.
This commit changes the homepages of all test Casks to http://brew.sh, whose
domain and TLS certificate are both controlled by Homebrew.
