Single quote not converted by htmlconv

Since I prefer single quote over double quote in HTML, I frequently encounter this problem: single quotes in fields are not converted to &#039 even if htmlconv is on, abruptly closing attributes.

It can be solved by adding ENT_QUOTES at line 2162 in tbs_class.php

Hi Sheepy,

It has be donne this way because double quote is the attribute's delimiter  recommended for HTML 4 and required for XHTML and XML.
Those recommandation/requirement are useful because CSS string delimiters are single quotes. Javascript still accepts both (') and ("").

Attribute names should be lowercase.

http://www.w3.org/TR/1999/WD-xml-c14n-19991115.html#Attributes
http://www.w3.org/TR/xml-c14n#Terminology
http://www.w3.org/TR/2004/CR-CSS21-20040225/about.html#q4