From 1df56265ec58a98b85f63d4c0f2ff09cb4f346e0 Mon Sep 17 00:00:00 2001
From: P. J. McDermott <pjm@nac.net>
Date: Tue, 09 Oct 2012 22:18:12 -0400
Subject: Protect library functions from IFS changes.

---
(limited to 'lib')

diff --git a/lib/common.sh b/lib/common.sh
index 1488bd7..78f1c62 100644
--- a/lib/common.sh
+++ b/lib/common.sh
@@ -21,21 +21,30 @@
 _OB_COMMON_SM='true'
 
 _OB_STACK_VARS=
+_OB_SAVED_IFS=
 
 _ob_local()
 {
 	# Push the variable list onto the stack.
 	_OB_STACK_VARS="${_OB_STACK_VARS}|${*}"
+
+	# Save the old IFS value, if any, and set it to its default.
+	_OB_SAVED_IFS="${IFS}"
+	unset IFS
 }
 
 _ob_return()
 {
 	# Unset the variables at the top of the stack.
+	IFS=' '
 	unset -v ${_OB_STACK_VARS##*|}
 
 	# Pop the variable list from the top of the stack.
 	_OB_STACK_VARS="${_OB_STACK_VARS%|*}"
 
+	# Restore the saved IFS.
+	IFS="${_OB_SAVED_IFS}"
+
 	return ${1}
 }
 
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