Message 138318 - Python tracker

I just closed #12329 as a duplicate of this bug.  It requested the addition of the apos named entity reference.

TTBOMK, the html module (or htmlentitydefs in 2.x) doesn’t claim to support XHTML TTBOMK; an XML parser should be used for XHTML.  In HTML 4.01, apos is not defined, but it is in HTML5.