Seriously, I don’t know why this thing keeps popping up but: it just works with single quotes, no need to change anything. Need proof? Ok, here we go:
Search for “WordPress SEO plugin”. Find my site, yoast.com, it’ll be #1 in most cases. See the meta description showing? Click on the “Cached” link, then open the source for the cache. There it is, in full glory, my meta description, as you’ve just seen in your search results, encapsulated by: single quotes.
This is of course 100% according to standards, see:
- HTML4: http://www.w3.org/TR/html401/intro/sgmltut.html#h-3.2.2
- HTML5: http://dev.w3.org/html5/spec/Overview.html#attribute-value-double-quoted-state
Thank you for your time.