From a571965df9d5dc84d1a32630a111768fbac71b3b Mon Sep 17 00:00:00 2001
From: Mike McQuaid
Date: Sat, 31 Dec 2016 16:38:05 +0000
Subject: formula: make prefix usually return opt_prefix.

Return `opt_prefix` if it exists and `prefix` is not called from within
the same formula's `install` or `post_install` methods. Otherwise, fall
back to the existing functionality.

This avoids the need to use `opt_prefix` etc. everywhere and generally
means we don't expose an implementation detail (i.e. the full Cellar
path) to dependents that have a habit of hard-coding it.
---
 Library/Homebrew/cmd/--prefix.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'Library/Homebrew/cmd')

diff --git a/Library/Homebrew/cmd/--prefix.rb b/Library/Homebrew/cmd/--prefix.rb
index c59830833..f6e7d2ee2 100644
--- a/Library/Homebrew/cmd/--prefix.rb
+++ b/Library/Homebrew/cmd/--prefix.rb
@@ -11,7 +11,7 @@ module Homebrew
     if ARGV.named.empty?
       puts HOMEBREW_PREFIX
     else
-      puts ARGV.resolved_formulae.map { |f| f.opt_prefix.exist? ? f.opt_prefix : f.installed_prefix }
+      puts ARGV.resolved_formulae.map(&:installed_prefix)
     end
   end
 end
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