Symptom: If no python/ruby/perl is in your path, then `which x`.chomp
returns an empty string and `unless ""` is still true. So, N/A is never
displayed. Instead, ruby's Pathname.new("").realpath returns the cwd.
(I consider this realpath behavior a ruby bug) Fix: use empty?
ClosesHomebrew/homebrew#10027.
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>
The recommended compiler versions printed from `brew-config` are out
of date and misleading. The recommendation is always "Run the latest
version of Xcode available for your platform".
The code was sucking. To the extent that maintenance was hard. It's a lot
easier to work with code that is sensibly split at sensible boundaries. So
now it is more like that.
But the refactor is minimal. Because we don't want you to have more merge
hell than absolutely necessary.
If you merge you will need to pay attention to brew.h.rb (as it is deleted)
and bin/brew (as command logic is gone). It will be painful, but you will just
have to help git out by moving any changes around manually.
Note compatibility.rb. It ensures that any function renames or removals don't
break anything. We're pretty serious about backwards compatibility. And that's
because we encourage you to hack around with the innards. And we couldn't do
that if we would then just make stuff disappear behind your back.
