[PATCH] kbuild: Allow strings with special characters in config file

[Sam Ravnborg <sam@ravnborg.org>]

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Escape double quotes on eval so the quotes are still there on the second evaluation.
This is required to handle strings with special characters.

Credit for this patch goes to Keith Owens, I simply extracted it from kbuild-2.5.

	Sam

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--- Menuconfig.orig	Fri May 31 21:55:40 2002
+++ Menuconfig	Fri May 31 21:42:16 2002
@@ -73,6 +73,10 @@
 # - Support for multiple conditions in dep_tristate().
 # - Implemented new functions: define_tristate(), define_int(), define_hex(),
 #   define_string(), dep_bool().
+#
+# 12 November 2001, Keith Owens <kaos@ocs.com.au>
+# Escape double quotes on eval so the quotes are still there on the second
+# evaluation, required to handle strings with special characters.
 # 
 
 
@@ -105,11 +109,11 @@
     eval x=\$$1
     if [ -z "$x" ]; then
 	eval `sed -n -e 's/# \(.*\) is not set.*/\1=n/' -e "/^$1=/p" arch/$ARCH/defconfig`
-	eval x=\${$1:-"$2"}
+	eval x=\${$1:-\"$2\"}
 	eval $1=$x
 	eval INFO_$1="' (NEW)'"
     fi
-    eval info="\$INFO_$1"
+    eval info=\"\$INFO_$1\"
 }
 
 #
@@ -151,7 +155,7 @@
 }
 
 function define_string () {
-	eval $1="$2"
+	eval $1=\"$2\"
 }
 
 #
@@ -333,7 +337,7 @@
 
 	while [ -n "$2" ]
 	do
-		if eval [ "_\$$2" = "_y" ]
+		if eval [ \"_\$$2\" = \"_y\" ]
 		then
 			current=$1
 			break
@@ -543,9 +547,9 @@
 			# we avoid them:
 			if expr "$answer" : '0$' '|' "$answer" : '[1-9][0-9]*$' '|' "$answer" : '-[1-9][0-9]*$' >/dev/null
 			then
-				eval $2="$answer"
+				eval $2=\"$answer\"
 			else
-				eval $2="$3"
+				eval $2=\"$3\"
 				echo -en "\007"
 				${DIALOG} --backtitle "$backtitle" \
 					--infobox "You have made an invalid entry." 3 43
@@ -576,9 +580,9 @@
 
 			if expr "$answer" : '[0-9a-fA-F][0-9a-fA-F]*$' >/dev/null
 			then
-				eval $2="$answer"
+				eval $2=\"$answer\"
 			else
-				eval $2="$3"
+				eval $2=\"$3\"
 				echo -en "\007"
 				${DIALOG} --backtitle "$backtitle" \
 					--infobox "You have made an invalid entry." 3 43
@@ -676,9 +680,9 @@
 	do
 		if [ "$2" = "$choice" ]
 		then
-			eval $2="y"
+			eval $2=\"y\"
 		else
-			eval $2="n"
+			eval $2=\"n\"
 		fi
 		
 		shift ; shift
@@ -941,9 +945,9 @@
 
 			[ "_" = "_$ALT_CONFIG" ] && break
 
-			if eval [ -r "$ALT_CONFIG" ]
+			if eval [ -r \"$ALT_CONFIG\" ]
 			then
-				eval load_config_file "$ALT_CONFIG"
+				eval load_config_file \"$ALT_CONFIG\"
 				break
 			else
 				echo -ne "\007"
@@ -1067,12 +1071,12 @@
 	#
 	function bool () {
 		set_x_info "$2" "n"
-		eval define_bool "$2" "$x"
+		eval define_bool \"$2\" \"$x\"
 	}
 
 	function tristate () {
 		set_x_info "$2" "n"
-		eval define_tristate "$2" "$x"
+		eval define_tristate \"$2\" \"$x\"
 	}
 
 	function dep_tristate () {
@@ -1138,19 +1142,19 @@
 	}
 
 	function define_hex () {
-		eval $1="$2"
+		eval $1=\"$2\"
                	echo "$1=$2"			>>$CONFIG
 		echo "#define $1 0x${2##*[x,X]}"	>>$CONFIG_H
 	}
 
 	function define_int () {
-		eval $1="$2"
+		eval $1=\"$2\"
 		echo "$1=$2" 			>>$CONFIG
 		echo "#define $1 ($2)"		>>$CONFIG_H
 	}
 
 	function define_string () {
-		eval $1="$2"
+		eval $1=\"$2\"
 		echo "$1=\"$2\""		>>$CONFIG
 		echo "#define $1 \"$2\""	>>$CONFIG_H
 	}
@@ -1160,7 +1164,7 @@
 	}
 
 	function define_tristate () {
-		eval $1="$2"
+		eval $1=\"$2\"
 
    		case "$2" in
          	y)
@@ -1199,7 +1203,7 @@
 		set -- $choices
 		while [ -n "$2" ]
 		do
-			if eval [ "_\$$2" = "_y" ]
+			if eval [ \"_\$$2\" = \"_y\" ]
 			then
 				current=$1
 				break