Issue with syntax highlight in with the strings

[StefanRuzicka]

Attached image shows the issue.
The start of string with double quotes (") doesn't stop at next (unescaped) double quote (") but at the last double quote in the line.
Example:
(var1, "string1", var2, var3, "string2", var4)
in the example "string1", var2, var3, "string2" is highlighted as a string.