tipa paired parenthesis bug in 21.5

[Stephen J. Turnbull]

Uwe Brauer writes:

 > What I cannot understand is to break backwards compatibility.

http://www.jwz.org/doc/cadt.html :-)

 > This seems not to be the case for the tinytools since the culprit
 > is 21.5.

Well, the odds are somewhat against it, but it's quite possible that
tinytools depends on some implementation detail that wasn't part of
the public API.

This is one of the problems that all Emacsen face; everything's open
so people do write code that depends on these arbitrary details.
(Stefan's having an discussion with Juanma about this on emacs-devel
in just the last couple of days.)