diff --git a/patcher b/patcher
index 558a01d..379f73b 100755
--- a/patcher
+++ b/patcher
@@ -7,6 +7,10 @@ export LC_ALL=C
 # This variable is used as a command. Set it to either true or false. It's case-sensitive.
 debug=false
 
+if ${debug}; then
+  set -x
+fi
+
 iOS12_usrlib=(
   "libDHCPServer.dylib" "libMatch.dylib" "libSystem.B_asan.dylib"
   "libSystem.dylib" "libSystem_asan.dylib" "libarchive.dylib"
@@ -52,8 +56,7 @@ sed_stdout() {
 }
 
 sed_file() {
-  sed -i "" "$1" "$2" 2&> /dev/null
-  printf "$2"
+  sed -i "" "$1" "$2" 2> /dev/null
 }
 
 patch_strings() {
@@ -65,22 +68,22 @@ patch_strings() {
   elif [ "$1" == "-f" ]; then
     sed="sed_file"
   else return 1; fi
-  result="$(${sed} 's/\/Library\//\/var\/LIB\//g' "${result}")"
-  result="$(${sed} 's/\/System\/var\/LIB\//\/System\/Library\//g' "${result}")"
-  result="$(${sed} 's/%@\/var\/LIB\//%@\/Library\//g' "${result}")"
-  result="$(${sed} 's/mobile\/var\/LIB\//mobile\/Library\//g' "${result}")"
+  result=$(${sed} 's/\/Library\//\/var\/LIB\//g' "${result}")
+  result=$(${sed} 's/\/System\/var\/LIB\//\/System\/Library\//g' "${result}")
+  result=$(${sed} 's/%@\/var\/LIB\//%@\/Library\//g' "${result}")
+  result=$(${sed} 's/mobile\/var\/LIB\//mobile\/Library\//g' "${result}")
 
   # The trick:
   # 1. Replace every "/usr/lib" with "/var/lib"
   # 2. Iterate over iOS12_usrlib and revert the system libraries
   # This way, we only need to hardcode the system libraries which will never change. We won't need to hardcode the libraries that are for jailbroken devices.
-  result="$(${sed} 's/\/usr\/lib\//\/var\/ulb\//g' "${result}")"
+  result=$(${sed} 's/\/usr\/lib\//\/var\/ulb\//g' "${result}")
   if [ $? -eq 0 ]; then
     for usr_lib_system_file in "${iOS12_usrlib[@]}"; do
       escaped_dot='\.'
       escaped_file="${usr_lib_system_file//./${escaped_dot}}"
       expression='s/\/var\/ulb\/'"${escaped_file}"'/\/usr\/lib\/'"${escaped_file}"'/g'
-      result="$(${sed} "${expression}" "${result}")"
+      result=$(${sed} "${expression}" "${result}")
     done
   fi
   [ "$1" == "-r" ] && printf "${result}"