configure.in: non-portable shell behavior

* configure.in (unexpand_shvar): get rid of non-portable shell
  behavior on OpenBSD, so no extra quotes.  [Bug #7959]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@39506 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Tue Feb 26 15:04:19 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* configure.in (unexpand_shvar): get rid of non-portable shell
+	  behavior on OpenBSD, so no extra quotes.  [Bug #7959]
+
 Tue Feb 26 10:24:49 2013  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* parse.y (IS_LABEL_POSSIBLE): allow labels for keyword arguments just

configure.in

@@ -3281,19 +3281,19 @@ shvar_to_cpp() {
 }
 
 unexpand_shvar() {
-    local var=$1 val n v expr quote
+    local var=$1 val n v expr
     shift
     test "$#" -eq 0 && return
-    quote=['s/${[^${}"]*}/"&"/g']
+    quote=['']
     for n do
         eval v='"$'$n'"'
-	v="`echo \"$v\" | sed -e \"$quote\" -e ['s/[][$|.\\?*]/\\\\&/g']`"
+	v="`echo \"$v\" | sed -e ['s/${[^${}"]*}/"&"/g'] -e ['s/[][$|.\\?*]/\\\\&/g']`"
 	if test -n "$v"; then
 	    expr=["${expr};s|"'\("[^$"]*\)'"$v|\\1\${$n}\"|g"]
 	    AS_CASE(["$v"], [*'${'*'}'*], [expr=["$expr;s|$v|\"\${$n}\"|g"]])
 	fi
     done
-    expr=["${quote}${expr};"'s/"\(\${[^${}"]*}\)"/\1/g']
+    expr=['s/${[^${}"]*}/"&"/g;'"${expr};"'s/"\(\${[^${}"]*}\)"/\1/g']
     eval $var='"`echo \"\\\"${'$var'}\\\"\" | sed \"$expr;s/\\\"\\\"//g;s/^\\\"//;s/\\\"\\\$//\"`"'
 }