Some special characters not escaped when written to XML file.

User contacted Qt support about following:

"

XML has 5 special characters >, <, &, ' and ", and they should be escaped when written to XML file as >, <, &, ' and " correspondingly.

However, when using QDomElement::setAttribute to write strings containing these special characters, > and ' are not escaped, though <, &, and " are escaped correctly.

"

Qt Support tested this and with QDomElement::setAttribute("attribute","> < & ' ") looks like 
"> < & ' " in XML file.