FYI: cygwin /bin/sh has changed

[Eric Blake]

Since autoconf appears to be the best collection of shell portability,
you may be interested to know that as of July 7, 2005, cygwin's official
/bin/sh is bash 3.x, rather than an old fork of the non-POSIX ash 0.2.
Cygwin distributions still include /bin/ash, but I doubt many users will
override the default /bin/sh == bash to replace it with ash.

It's been nice using ash to ferret out non-portable shell constructs, but
it will also be nice to worry about one less non-portable shell.

--
Eric Blake