From e4af65278369395a02be841276387042ff7b057d Mon Sep 17 00:00:00 2001
From: hyuraku <32809703+hyuraku@users.noreply.github.com>
Date: Tue, 20 Apr 2021 20:32:01 +0900
Subject: [PATCH] prefix.sh: repair style

---
 Library/Homebrew/prefix.sh | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/Library/Homebrew/prefix.sh b/Library/Homebrew/prefix.sh
index 1bc902b6d9..11b0899dd9 100644
--- a/Library/Homebrew/prefix.sh
+++ b/Library/Homebrew/prefix.sh
@@ -2,7 +2,8 @@
 # - `brew --prefix` (output HOMEBREW_PREFIX)
 # - `brew --prefix <formula>` (output HOMEBREW_PREFIX/opt/<formula>)
 # anything else? delegate to the slower cmd/--prefix.rb
-
+# HOMEBREW_PREFIX and HOMEBREW_REPOSITORY are set by brew.sh
+# shellcheck disable=SC2154
 homebrew-prefix() {
   while [[ "$#" -gt 0 ]]; do
       case $1 in
@@ -10,23 +11,23 @@ homebrew-prefix() {
           --prefix) local prefix="1"; shift ;;
           # reject all other flags
           -*) return 1 ;;
-          *) [ -n "$formula" ] && return 1; local formula="$1"; shift ;;
+          *) [ -n "${formula}" ] && return 1; local formula="$1"; shift ;;
       esac
   done
-  [ -z "$prefix" ] && return 1
-  [ -z "$formula" ] && echo "$HOMEBREW_PREFIX" && return 0
+  [ -z "${prefix}" ] && return 1
+  [ -z "${formula}" ] && echo "${HOMEBREW_PREFIX}" && return 0
 
   local formula_path
-  if [ -f "$HOMEBREW_REPOSITORY/Library/Taps/homebrew/homebrew-core/Formula/${formula}.rb" ]; then
-    formula_path="$HOMEBREW_REPOSITORY/Library/Taps/homebrew/homebrew-core/Formula/${formula}.rb"
+  if [ -f "${HOMEBREW_REPOSITORY}/Library/Taps/homebrew/homebrew-core/Formula/${formula}.rb" ]; then
+    formula_path="${HOMEBREW_REPOSITORY}/Library/Taps/homebrew/homebrew-core/Formula/${formula}.rb"
   else
     formula_path="$(
       shopt -s nullglob
-      echo "$HOMEBREW_REPOSITORY/Library/Taps"/*/*/{Formula/,HomebrewFormula/,}"${formula}.rb"
+      echo "${HOMEBREW_REPOSITORY}/Library/Taps"/*/*/{Formula/,HomebrewFormula/,}"${formula}.rb"
     )"
   fi
-  [ -z "$formula_path" ] && return 1
+  [ -z "${formula_path}" ] && return 1
 
-  echo "$HOMEBREW_PREFIX/opt/$formula"
+  echo "${HOMEBREW_PREFIX}/opt/${formula}"
   return 0
 }