From db4ce3d6b71b2de8b8ed93679a991382bb5c92fe Mon Sep 17 00:00:00 2001
From: Mike McQuaid
Date: Wed, 24 Aug 2016 10:55:19 +0100
Subject: bin/brew: refactor HOMEBREW_PREFIX="/" logic.

The previous approach of trying to do it on one line was confusing.
---
 bin/brew | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/bin/brew b/bin/brew
index 0fabbb97e..f73ba14e1 100755
--- a/bin/brew
+++ b/bin/brew
@@ -7,10 +7,13 @@ quiet_cd() {
 
 BREW_FILE_DIRECTORY="$(quiet_cd "${0%/*}/" && pwd -P)"
 HOMEBREW_BREW_FILE="${BREW_FILE_DIRECTORY%/}/${0##*/}"
-
 HOMEBREW_PREFIX="${HOMEBREW_BREW_FILE%/*/*}"
-[[ -n "$HOMEBREW_PREFIX" && "$HOMEBREW_PREFIX" != "$HOMEBREW_BREW_FILE" ]] \
-  || HOMEBREW_PREFIX="/"
+
+# Default to / prefix if unset or the bin/brew file.
+if [[ -z "$HOMEBREW_PREFIX" || "$HOMEBREW_PREFIX" = "$HOMEBREW_BREW_FILE" ]]
+then
+  HOMEBREW_PREFIX="/"
+fi
 
 HOMEBREW_REPOSITORY="$HOMEBREW_PREFIX"
 
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