Add support for `brew --prefix [formula ...]`.

When `brew --prefix` is called with arguments, assume each argument is a
formula and print their prefixes instead.

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

1 files changed, 6 insertions, 1 deletions

diff --git a/bin/brew b/bin/brew
index bd848a9f1..d5d9791eb 100755
--- a/bin/brew
+++ b/bin/brew
@@ -81,7 +81,12 @@ begin
 
   case arg = ARGV.shift
   when '--prefix'
-    puts HOMEBREW_PREFIX
+    if ARGV.named.empty?
+      puts HOMEBREW_PREFIX
+    else
+      puts *ARGV.formulae.collect {|f| f.prefix}
+    end
+
   when '--repository'
     puts HOMEBREW_REPOSITORY
   when '--cellar'