This commit adds a `devel` entry to the DSL, allowing formulae to
specify an unstable branch.

`devel` takes a block, which should contain standard `url` and `md5`
fields (and `version`, if necessary). This must come after the standard
DSL fields.

This commit also migrates over all formulae currently using `devel` to
the new syntax, as well as formulae which used `head` for non-VCS urls.

The new syntax is also available for `stable` and `bottle`. `stable` is
an option alongside the old syntax. `bottle` replaces the old syntax.

Note that the @stable ivar in Formula has been renamed to @standard,
and the @bottle ivar has been renamed to @bottle_url.

Closes Homebrew/homebrew#9735.

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

We need the ARGV extension now that we call ARGV.build_bottle? in
set_cpu_cflags.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Fixes Homebrew/homebrew#9739.

Closes Homebrew/homebrew#8960.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Appending an empty string results in an extraneous space character.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Closes Homebrew/homebrew#9350.

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

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

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

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

Closes Homebrew/homebrew#9622.

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

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

Installing a formula via `brew install` may trigger upgrades of its
dependencies if the dependencies are installed but outdated. However, we
never unlinked the existing keg in FormulaInstaller#install_dependency
which caused the link step to fail.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Instead of returning a full list of results after parsing, yield and
print each result as it's found for a snappier user experience.

Closes Homebrew/homebrew#9576.

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

The v3 API currently lacks a search feature. Use the v2 API instead for
much faster pull request filtering.

Closes Homebrew/homebrew#9592.

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

I had EDITOR set to /usr/local/bin/mate set and got the whole of /usr/local opened in TextMate which takes fricking forever!

Just a cosmetic nicety.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Fixes Homebrew/homebrew#9575.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

And document a bit more why this hack is present.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Allow the use of a Homebrewed gcc-4.2 in order to support homebrew-alt's
apple-gcc42 formula.

This also removes the :force filtering for the gcc-4.2 check error.

Closes Homebrew/homebrew#9384.

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

When search can't find any local results, hit the GitHub API and search
the titles of pending pull requests. This will help people find the many
proposed formulae and prevent them from wasting time duplicating them.

Closes Homebrew/homebrew#9018.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Let's choose the first \d{2,} as the build number, as it is the most
likely to indicate significant changes, and we need something to use for
comparison when selecting compilers.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

This is silly, but I am no Rubyist and I don't have time to
figure out why Formula.factory(foo).url works as expected but
Formula.factory(foo).version does not.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

This will be useful for shell tab completion when something like `brew
install <formula> --version <version>` is implemented.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Rather than regex the output of `git show <rev>:<path>`, we write the
output of `git cat-file blog <rev>:<path>` to a temporary file, and then
operate on it just as we would a normal formula.

I haven't observed any speed difference. `git cat-file blob` is faster
than `git show`, but the "slow part" is still the git-rev-list
invocation. But really it's pretty fast overall.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Passing Formula.factory the name of a keg that belongs to a non-core
formula will cause an error to be raised; we don't really care, so just
fake a totally empty install receipt in this case.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

When multiple kegs are installed, `brew info` marks a keg with an
asterisk if f.installed_prefix == keg, but this is only true if either
HEAD or the newest version of the formula is installed. This isn't
always useful, so let's mark the currently linked keg with an asterisk
regardless of the version.

Obviously, keg-only formula will never be marked, but this is probably a
feature. When multiple keg-only kegs exist, chances are that they are
each being utilized by something, so there isn't really a "used" and
"unused" version.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

This will be useful in places where we need information about things
other than the currently linked keg, such as `brew info`.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

'keg.linked?' will return true if there is an entry for 'keg' in
LinkedKegs.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

Signed-off-by: Jack Nagel <jacknagel@gmail.com>

If the suggested modifications are already in place, just skip the
warning.

Closes Homebrew/homebrew#8624.

Signed-off-by: Jack Nagel <jacknagel@gmail.com>