testsuite

[Jonas Walld�n @ Pike developers forum]

Here's one of several real-world examples that I found from our CMS
(it's a bit tricky to grep after these constructs...):

  #define quote(X) (replace((X)||"", "'", "'\"'\"'"))
  [...]
  "<var name='destname' type='string' size='40' default='" +
  quote(sbobj->name(id)) + "' />"

A sbobj->name() returning "'foo'" would then produce:

  <var ... default=''"'"'foo'"'"'' />

Whether this is a guarantee that we never concatenate two strings with
same quote char I don't know, but I'd rather preserve any such
backwards compatibility than the very-odd quoted attribute _name_
syntax which I've never seen used.