From 8dcb1636ce40425e29c0408a8a366889ef02e8c0 Mon Sep 17 00:00:00 2001
From: Maxim Belkin <maxim.belkin@gmail.com>
Date: Wed, 20 May 2020 12:29:45 -0500
Subject: [PATCH] utils/ruby.sh: add explanatory comments

---
 Library/Homebrew/utils/ruby.sh | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Library/Homebrew/utils/ruby.sh b/Library/Homebrew/utils/ruby.sh
index 284a8e581b..7974e909c2 100644
--- a/Library/Homebrew/utils/ruby.sh
+++ b/Library/Homebrew/utils/ruby.sh
@@ -50,7 +50,7 @@ If there's no Homebrew Portable Ruby available for your processor:
       then
         HOMEBREW_RUBY_PATH="/System/Library/Frameworks/Ruby.framework/Versions/Current/usr/bin/ruby"
       else
-        IFS=$'\n'
+        IFS=$'\n' # Do word splitting on new lines only
         for ruby_exec in $(which -a ruby) $(PATH=$HOMEBREW_PATH which -a ruby)
         do
           if [[ $(test-ruby "$ruby_exec") == "true" ]]; then
@@ -58,7 +58,7 @@ If there's no Homebrew Portable Ruby available for your processor:
             break
           fi
         done
-        IFS=$' \t\n'
+        IFS=$' \t\n' # Restore IFS to its default value
         [[ -z $HOMEBREW_RUBY_PATH ]] && onoe "Failed to find usable Ruby $required_ruby_version!"
       fi