If `bin/brew` happens to be symlinked to `/brew`, `/bin/brew`, or some
similar location or (worse yet) Homebrew is installed to `/`, then
computation of the prefix and/or repository path could break down and
result in an invalid or empty path.

Closes Homebrew/homebrew-core#2430.

Closes #411.

Signed-off-by: Xu Cheng <xucheng@me.com>

Move dylib_path and bundle_path from test_mach to testing_env to
accommodate the new tests.

Closes #400.

Signed-off-by: Martin Afanasjew <martin@afanasjew.de>

This is inspired by `safe_system` with basically the same implication
(fail on error), making the name a lot less confusing and avoiding a
clash with the `chdir` function previously defined in `bin/brew`.

Closes #414.

Signed-off-by: Martin Afanasjew <martin@afanasjew.de>

This is inspired by `quiet_system` with basically the same implication
(suppress output), making the name a lot less confusing and avoiding a
clash with the `chdir` function defined in `Library/brew.sh`.

This reverts commit 3e5e14a5.

This reverts commit 62d70796.

Move dylib_path and bundle_path from test_mach to testing_env to
accommodate the new test.

Closes #400.

Signed-off-by: Tim D. Smith <git@tim-smith.us>

This commit adds a --tap option to the create command such that a user
could create a formula in a specified tap instead of the core.

The `ensure` block can be reached before the tab is modified (and thus
before `original_tab` gets populated). Avoid raising an exception when
attempting to restore a tab that hasn't been modified yet, e.g. because
relocating some of the Mach-O binaries failed.

* Fix regression caused by 05649cee
* Use `Tap#formula_file?` to filter formula.

* audit.rb: require https for ftpmirror.gnu.org

The situation is similar to other mirror redirectors: the server
may subsequently redirect to an insecure url. But it's a step.

* manpage: update HOMEBREW_NO_INSECURE_REDIRECT section

Don't force installation of the `hub` formula if it can be found in the
search path. (Avoids unnecessary installation when switching between
multiple Homebrew installations for different tasks.)

Closes #384.

Signed-off-by: Martin Afanasjew <martin@afanasjew.de>

In local-only mode, the created branches end up tracking `origin/master`
which isn't desirable.

Allow boneyarding a formula locally, i.e. make all the necessary changes
in the local repositories but don't push them to a remote and don't open
a pull request automatically.

This should make more bottles relocatable e.g. ansible.

.pyo files are bytecode as .pyc files but optimized -
[ref](https://www.python.org/dev/peps/pep-0488/)

Ref https://github.com/Homebrew/homebrew-core/pull/2125#issuecomment-226987124

Closes #378.

Signed-off-by: Martin Afanasjew <martin@afanasjew.de>

MachOFile#cputype now returns a Symbol.

Move check for emptiness into the display method, avoiding repetitive
checks on the call site.

Closes #381.

Signed-off-by: Martin Afanasjew <martin@afanasjew.de>

Prevent raising an error when `HOMEBREW_RUBY_MACHO=1` is set. Skipping
symlinks and directories while iterating over a directory structure to
find Mach-O binaries makes sense and similar logic is applied elsewhere.

Closes #377.

Signed-off-by: Baptiste Fontaine <b@ptistefontaine.fr>

Prefer `Utils.git_version` instead of duplicating version detection
logic. Decouple unnecessary conflated availability and version checks.

Closes #351.

Signed-off-by: Martin Afanasjew <martin@afanasjew.de>