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http://bugs.gentoo.org/416985

--- src/conffile.c
+++ src/conffile.c
@@ -372,7 +372,7 @@ static int cf_prepare_regexps()
   /* A regexp matching a boolean value*/
 
   if( regcomp(&declaration_RE, 
-	      "^[[:blank:]]*([-a-zA-Z_]+)[[:blank:]]*"
+	      "^[[:blank:]]*([-[:alpha:]_]+)[[:blank:]]*"
 	      "=[[:blank:]]*(.*)$",
 	      REG_EXTENDED )) {
     perror(_("Could not compile regular expression for boolean values"));
@@ -392,7 +392,7 @@ static int cf_prepare_regexps()
   }
 
   if( regcomp(&uint_RE, 
-	      "^[[:blank:]]*([a-zA-Z_]+)[[:blank:]]*"
+	      "^[[:blank:]]*([[:alpha:]_]+)[[:blank:]]*"
 	      "=[[:blank:]]*([0-9]+)$",
 	      REG_EXTENDED )) {
     perror(_("Could not compile regular expression for integer values"));