How to handle default value in read-string?

[Marcin Borkowski]

Hi everybody,

I'd like read-string to somehow indicate the default value.  A natural
idea is to include it in the prompt, for example having a prompt like

(format "Foo (%s): " default)

However, Icicles' version of read-string already does exactly that, so
for Icicles users this would be superfluous.

So here's the question: is there a better way than just have a prompt of

(if icicle-mode (don't-include-default) (do-include-default))?

TIA,

-- 
Marcin Borkowski
http://octd.wmi.amu.edu.pl/en/Marcin_Borkowski
Faculty of Mathematics and Computer Science
Adam Mickiewicz University