tweak to prepend_var

2010-10-04 11:03:57 +00:00 · 2010-10-04 11:03:57 +00:00 · 569fd3bd5c
parent 8ef0b344d6
commit 569fd3bd5c
1 changed files with 2 additions and 3 deletions
--- a/tools/scripts/vips-7.23
+++ b/tools/scripts/vips-7.23
@ -24,11 +24,10 @@ fi
 # can cause security problems
 function prepend_var () {
 	# we have to use eval to do double indirection, I think
-	eval value=x"\$$1"
-	if [ $value = x ]; then
+	eval value="\$$1"
+	if [ "x$value" = x ]; then
 		export $1=$2
 	else 
-		eval value="\$$1"
 		export $1=$2:$value
 	fi
 }