small fixes

lib/ace/mode/sqlserver_highlight_rules.js

@@ -154,10 +154,12 @@ var SqlServerHighlightRules = function() {
         }, {
             token : keywordMapper,
             regex : "[a-zA-Z_$][a-zA-Z0-9_$]*\\b"
-        }, {
+        }
+        /* this works to make variables designated with @ symbol show as a single token... but it screws up built in functions that start with @ symbol
+        , {
             token : "constant.class",
             regex : "@@?[a-zA-Z_$][a-zA-Z0-9_$]*\\b"
-        }, {
+        }*/, {
             token : "keyword.operator",
             regex : "\\+|\\-|\\/|\\/\\/|%|<@>|@>|<@|&|\\^|~|<|>|<=|=>|==|!=|<>|="
         }, {