Provide `OS::Mac.prerelease?` for pre-release checks and use it where
appropriate. This should simplify updating the test once a new OS X
release lands.

This also fixes a bug in `BuildError#dump`, where an empty warning
message was printed on El Capitan after a failed from-source build,
because the check there and the one in `check_for_unsupported_osx` were
out of sync.

Closes Homebrew/homebrew#45257.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>

Fixes Homebrew/homebrew#44061.
Closes Homebrew/homebrew#44501.
Closes Homebrew/homebrew#45108.

Signed-off-by: Alex Dunn <dunn.alex@gmail.com>

We don't care about the formulae that have changed since the last commit
so just ignore it.

`Keg#app_installed?` only checks the formula prefix and `libexec/` for
.app bundles to determine if a formula provides any. This is used by
`Caveats#app_caveats` to generate an appropriate message. The same list
should be used by `brew linkapps` for consistency.

Reduce likelihood of future inconsistencies by creating `Keg#apps` and
using it in place of the duplicate code.

Closes Homebrew/homebrew#45173.

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

Closes Homebrew/homebrew#45175.

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

Use `start_with?` to make sure the symlink actually points into one of
the Homebrew directories (depending on given arguments). Previously,
only a substring match was used, which would also remove a symlink to a
hypothetical `/opt/unrelated/usr/local/opt/Unrelated.app`. Even if
unlikely to occur, altering stuff unrelated to Homebrew is bad.

Furthermore, make sure to always use a trailing slash with directories.
Otherwise, e.g., `brew unlinkapps qt` will unlink .app bundles of both
`qt` and `qt5` if both are installed and `brew linkapps qt qt5` was
issued before. (Please ignore that `qt` and `qt5` offer a conflicting
set of .app bundles. This will have to be addressed elsewhere.)

Closes Homebrew/homebrew#45174.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>

Closes Homebrew/homebrew#45134.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>

Closes Homebrew/homebrew#43935.

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

Also don't pour bottle if it's disabled.

Closes Homebrew/homebrew#42222.
Closes Homebrew/homebrew#44892.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>

`reinstall` can currently be executed under sudo and has every chunk of problems
running install under sudo does when `brew` isn't root owned.

Likewise with `postinstall` which we increasingly use to create directories and
move/install files elsewhere. Using sudo there both masks deeper issues and
makes uninstall troublesome.

Closes Homebrew/homebrew#45112.

Signed-off-by: Dominyk Tiller <dominyktiller@gmail.com>

Closes Homebrew/homebrew#45021.

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

Closes Homebrew/homebrew#44988.

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

Add links to specific jenkins jobs described in
Brew-Test-Bot-For-Core-Contributors.md

Closes Homebrew/homebrew#45052.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>

Closes Homebrew/homebrew#45075.

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

By including the missing patch inline

See Homebrew/homebrew#43361 and Homebrew/homebrew-boneyard#66

Closes Homebrew/homebrew#44888.

Signed-off-by: Dominyk Tiller <dominyktiller@gmail.com>

and not broken

Closes Homebrew/homebrew#45045.

Signed-off-by: Dominyk Tiller <dominyktiller@gmail.com>

https://github.com/Homebrew/homebrew/commit/2950e5ab6ee76f35c7015cfa2d07bee6ddb1170e#commitcomment-13824130

dylib install_names are presently rewritten relative to HOMEBREW_PREFIX,
except for keg-only formulas, which are rewritten relative to
opt_prefix.

If we make a formula keg_only, all of its dependents need to be bumped,
since it will no longer exist in HOMEBREW_PREFIX and all of the links
will be written incorrectly.

If we always use opt_prefix, we avoid that dilemma, and make installed
packages more robust if a dependency is `brew unlink`ed.

Closes Homebrew/homebrew#43518.

Signed-off-by: Dominyk Tiller <dominyktiller@gmail.com>

The yellow background made the text unreadable for light-on-dark color
schemes. Fix by making the highlighted text just bold.

Fixes Homebrew/homebrew#45028.

Closes Homebrew/homebrew#45030.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>

Moves the "Checking out" output to where checkouts actually happen, to avoid spurious checkout announcements.

Closes Homebrew/homebrew#45019.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>

Improve output in the (rare) cases where a tap offers both commands and
formulae or neither. Also adjust code to stay below the 80 column limit.

Closes Homebrew/homebrew#44995.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>

Closes Homebrew/homebrew#43468.

Signed-off-by: Mike McQuaid <mike@mikemcquaid.com>