Re: extglob patterns not expanded in -c command-strings

[Paulo Marcel Coelho Aragão]

> bash -c 'shopt -s extglob; echo @(foo*|bar*)'

I've just discovered that this works as expected:

bash -O extglob -c 'echo @(foo*|bar*)'

However, the puzzle lingers on, since running this:

bash -c 'shopt -s extglob; shopt extglob'

results in:

extglob         on

which indicates that the original command should have worked as expected, 
recognizing the extglob pattern.

There's still a mystery to unveal here.