From f7e2b86c94b36f6455c0adb1b40f7049ff290ee6 Mon Sep 17 00:00:00 2001
From: athenian200 <athenian200@outlook.com>
Date: Tue, 1 Oct 2019 06:38:45 -0500
Subject: [PATCH] MoonchildProductions#1251 - Part 2: Make the mozconfig loader
 POSIX-compliant.

https://bugzilla.mozilla.org/show_bug.cgi?id=1360571

Solaris uses ksh as the default shell, and furthermore bash doesn't seem to support the 'local' keyword feature when invoked as sh on OpenIndiana. We could just change the script to use bash (it is an option even on Solaris), but this fix is available and Mozilla has been using it since Firefox 55 with no issues on any other platforms. It was specfically done this way to avoid any need to change existing mozconfig files, so I feel confident saying the change is totally benign and if anything the way it is now is technically a POSIX compliance issue inherited from Mozilla that we'll hit if we ever try to compile this on any Unix platform where bash isn't sh.
---
 python/mozbuild/mozbuild/mozconfig_loader | 38 +++++++++++------------
 1 file changed, 18 insertions(+), 20 deletions(-)

diff --git a/python/mozbuild/mozbuild/mozconfig_loader b/python/mozbuild/mozbuild/mozconfig_loader
index 6b1e05dce3..6c3df47acf 100644
--- a/python/mozbuild/mozbuild/mozconfig_loader
+++ b/python/mozbuild/mozbuild/mozconfig_loader
@@ -10,49 +10,46 @@
 set -e
 
 ac_add_options() {
-  local opt
-  for opt; do
-    case "$opt" in
+  for _mozconfig_opt; do
+    case "$_mozconfig_opt" in
     --target=*)
       echo "------BEGIN_MK_OPTION"
-      echo $opt | sed s/--target/CONFIG_GUESS/
+      echo $_mozconfig_opt | sed s/--target/CONFIG_GUESS/
       echo "------END_MK_OPTION"
       ;;
     esac
     echo "------BEGIN_AC_OPTION"
-    echo $opt
+    echo $_mozconfig_opt
     echo "------END_AC_OPTION"
   done
 }
 
 ac_add_app_options() {
-  local app
-  app=$1
+  _mozconfig_app=$1
   shift
   echo "------BEGIN_AC_APP_OPTION"
-  echo $app
+  echo $_mozconfig_app
   echo "$*"
   echo "------END_AC_APP_OPTION"
 }
 
 mk_add_options() {
-  local opt name op value
-  for opt; do
+  for _mozconfig_opt; do
     echo "------BEGIN_MK_OPTION"
-    echo $opt
+    echo $_mozconfig_opt
     # Remove any leading "export"
-    opt=${opt#export}
-    case "$opt" in
-    *\?=*) op="?=" ;;
-    *:=*) op=":=" ;;
-    *+=*) op="+=" ;;
-    *=*) op="=" ;;
+    opt=${_mozconfig_opt#export}
+    case "$_mozconfig_opt" in
+    *\?=*) _mozconfig_op="?=" ;;
+    *:=*) _mozconfig_op=":=" ;;
+    *+=*) _mozconfig_op="+=" ;;
+    *=*) _mozconfig_op="=" ;;
     esac
     # Remove the operator and the value that follows
-    name=${opt%%${op}*}
-    # Note: $(echo ${name}) strips the variable from any leading and trailing
+    _mozconfig_name=${_mozconfig_opt%%${_mozconfig_op}*}
+    # Note: $(echo ${_mozconfig_name}) strips the variable from any leading and trailing
     # whitespaces.
-    eval "$(echo ${name})_IS_SET=1"
+    eval "$(echo ${_mozconfig_name})_IS_SET=1"
     echo "------END_MK_OPTION"
   done
 }
@@ -77,4 +74,5 @@ echo "------END_AFTER_SOURCE"
 
 echo "------BEGIN_ENV_AFTER_SOURCE"
 $3 $4
+
 echo "------END_ENV_AFTER_SOURCE"