Also handle TapFormulaAmbiguityError

If there are multiple tap formulae with the name of ref,
then ref is the canonical name

Closes Homebrew/homebrew#40117.

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

[].last => nil
[].max => nil

Closes Homebrew/homebrew#39447.

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

Closes Homebrew/homebrew#38628.

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

The xcrun script should be skipping the ENV directory when it scans
$PATH looking for tools to run. Unfortunately, the script compares the
paths found to the real path of the ENV directory (following symlinks),
but superenv was adding the nominal path to $PATH, not following
symlinks. As a consequence, platforms with Xcode < 4.3 would get into
infinite loops when trying to call non-system versions of gcc, as xcrun
calls the ENV version of gcc-X.X which calls xcrun and so on forever.

This commit changes superenv to follow symlinks when determining the bin
path to use.

Fixes Homebrew/homebrew#33731.
Closes Homebrew/homebrew#40062.

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

Closes Homebrew/homebrew#39911.

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

Closes Homebrew/homebrew#40025.

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

Closes Homebrew/homebrew#40042.

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

Fix the audit problem in Homebrew/homebrew#40000.

Closes Homebrew/homebrew#40012.

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

Re https://github.com/Homebrew/homebrew-tex/pull/4#issuecomment-104186361



Closes Homebrew/homebrew#39973.

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

Closes Homebrew/homebrew#39909.

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

Closes Homebrew/homebrew#39906.

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

Closes Homebrew/homebrew#39899.

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

Link to MetaCPAN.org instead of search.cpan.org. MetaCPAN is the community-maintained web portal to CPAN, while search.cpan.org is the historic but proprietary one.

Closes Homebrew/homebrew#39836.

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

Closes Homebrew/homebrew#39626.

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

GDB is a requirement, but GDB lives in the homebrew/dupes tap now,
so dupx cannot stay in core.

Closes Homebrew/homebrew#39332.

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

This method may see values originating HOMEBREW_CC.

This reverts commit 9c74f42962090c016143744b057e13aa75d9b13e.