brew: Make HOMEBREW_REPOSITORY different from prefix only when 'brew' is a symlink

Closes Homebrew/homebrew#49261.

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

1 files changed, 4 insertions, 2 deletions

diff --git a/bin/brew b/bin/brew
index 24bf1f71b..4fa5baca1 100755
--- a/bin/brew
+++ b/bin/brew
@@ -6,16 +6,18 @@ chdir() {
 BREW_FILE_DIRECTORY="$(chdir "${0%/*}" && pwd -P)"
 HOMEBREW_BREW_FILE="$BREW_FILE_DIRECTORY/${0##*/}"
 
+HOMEBREW_PREFIX="${HOMEBREW_BREW_FILE%/*/*}"
+HOMEBREW_REPOSITORY="$HOMEBREW_PREFIX"
+
 if [[ -L "$HOMEBREW_BREW_FILE" ]]
 then
   BREW_SYMLINK="$(readlink "$HOMEBREW_BREW_FILE")"
   BREW_SYMLINK_DIRECTORY="$(dirname "$BREW_SYMLINK")"
   BREW_FILE_DIRECTORY="$(chdir "$BREW_FILE_DIRECTORY" &&
                          chdir "$BREW_SYMLINK_DIRECTORY" && pwd -P)"
+  HOMEBREW_REPOSITORY="${BREW_FILE_DIRECTORY%/*}"
 fi
 
-HOMEBREW_PREFIX="${HOMEBREW_BREW_FILE%/*/*}"
-HOMEBREW_REPOSITORY="${BREW_FILE_DIRECTORY%/*}"
 HOMEBREW_LIBRARY="$HOMEBREW_REPOSITORY/Library"
 
 source "$HOMEBREW_LIBRARY/brew.sh"