lib/jsonpath/parser.rb in jsonpath-0.8.8 vs lib/jsonpath/parser.rb in jsonpath-0.8.10

@@ -20,20 +20,20 @@
       end
       ret
     end
 
     def parse_exp(exp)
-      exp = exp.sub(/@/, '').gsub(/[\(\)]/, '').gsub(/"/, '\'').strip
+      exp = exp.sub(/@/, '').gsub(/^\(/, '').gsub(/\)$/, '').gsub(/"/, '\'').strip
       scanner = StringScanner.new(exp)
       elements = []
       until scanner.eos?
         if scanner.scan(/\./)
           sym = scanner.scan(/\w+/)
           op = scanner.scan(/./)
           num = scanner.scan(/\d+/)
           return @_current_node.send(sym.to_sym).send(op.to_sym, num.to_i)
         end
-        if t = scanner.scan(/\['[a-zA-Z@&\*\/\$%\^\?]+'\]+/)
+        if t = scanner.scan(/\['[a-zA-Z@&\*\/\$%\^\?_]+'\]+/)
           elements << t.gsub(/\[|\]|'|\s+/, '')
         elsif t = scanner.scan(/(\s+)?[<>=][<>=]?(\s+)?/)
           operator = t
         elsif t = scanner.scan(/(\s+)?'?.*'?(\s+)?/)
           operand = t.delete("'").strip