Binaries with names like 'run' or 'service' are likely to conflict.
Warn about these and suggest a libexec-style install instead.

References Homebrew/homebrew#18922.
Closes Homebrew/homebrew#24188.
Closes Homebrew/homebrew#24190.

A better fix would be to rewrite the curl method to yield its output,
but I don't feel like doing that right now.

Fixes Homebrew/homebrew#24172.

Point users to the tap's issue tracker URL.

* shows green tick if installed or red cross if not
* only highlight dependency if HOMEBREW_NO_EMOJI is set

Closes Homebrew/homebrew#18922.

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

Closes Homebrew/homebrew#24107.

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

Closes Homebrew/homebrew#24106.

Closes Homebrew/homebrew#24094.

Closes Homebrew/homebrew#24104.

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

This is a string since it is used to match string keys in a hash.

The other values will be identical.

Closes Homebrew/homebrew#23449.

The one liner should put `#{HOMEBREW_PREFIX}/bin:$PATH` into bash profile.
Previously it was being interpreted by the shell before being put in bash profile.

Closes Homebrew/homebrew#24008.

Signed-off-by: Adam Vandenberg <flangy@gmail.com>

This causes CI builds on 10.9 to fail; will repush once it is updated.

This reverts commit 70c5ce09d995426aefdbfd4aba0b06efe100a433.

Fixes Homebrew/homebrew#24018.

Closes Homebrew/homebrew#23931.

The cc wrapper's make_fuss is only enabled when HOMEBREW_CCCFG contains
'O', which is set by the make wrapper. This means it is disable when
running configure scripts. However, this does not include configure
scripts invoked by make, which inherit the value of HOMEBREW_CCCFG from
the make process. make_fuss will be enabled for these scripts, cause
breakage.

Configure scripts generated by autoconf 2.56 (November 2002) or later
export DUALCASE into the environment of subprocesses. This variable is
only used by the MKS shell, so we can use it as a heuristic to determine
if we are running as a subprocess of a configure script.

Fixes Homebrew/homebrew#23936.

In 6e3a585607116d06f47aac2ff5a649f2898216f0 ("Improve superenv
add/remove message."), more debugging information was added to the
"make_fuss" output generated by the superenv compiler
wrapper.

This resulted in some breakage in configure scripts that inspect stderr,
so in e1bd9b9e980c433878e60833f09964b8ca996657 ("Don't use stderr for
make_fuss output."), the output was moved to stdout. This only appeared
to solve the problem, since stdout is buffered but stderr is not.

Later, in fb749e47509b77b5bd89e7b14f0a1097d4af7f40, Homebrew started
generating logs even in verbose mode. This had the side effect of moving
stdout/stderr from a TTY to a pipe, and thus stdout was no longer
line-buffered.

Since it was not line-buffered, and Ruby's internal buffers were not
flushed, the debug output was being lost. This was addressed in
2d5724af8613c820b8c14f4171fe1de6a17f10c3 ("cc: ensure wrapper output is
always flushed").

This caused stdout to be flushed during configure, which resurfaced the
original bug that prompted e1bd9b9e980c433878e60833f09964b8ca996657.
This was fixed by disabling the debug output during configure, in
f1779837a46a58520560fba3850a0e2992284d0a.

Since the original bug has been addressed in a more robust way, we can
move the debug output back to stderr.

Fixes Homebrew/homebrew#23923.

These options are deprecated in favor of --cc=<compiler>, so there is no
need to continue advertising their existence.