"blah". (A simple search for the text
'"'will return numerous examples of such errors.)
This is caused by overzealous escaping of special characters.
The ampersand character
'&', in particular, is doubly
special: it is both a special character, and forms part of the escape
mechanism itself, as in
If text containing any special character is escaped twice, then the above mentioned problem occurs. A simple example shows why:
"blah"(still renders as
"blah"). Note the doubly escaped ampersand.