RE: Patch: Follow convention for reading with the minibuffer.

[Drew Adams]

        I guess the current format of the default buffer prompt was easier
        to implement.  Finding an appropriate place in the given prompt to
        insert the default value is not a trivial task to do in C.

    This suggests a simple solution: define a convention whereby the
    prompt string for use with `b' and `B' specifies where to insert the
    default.  The convention could be "use %s", and the insertion would be
    done with `format'.  This is an incompatible change, in principle, but
    I think no real uses will ever break.

    If there is no %s in the prompt, it can add the default at the end,
    just as it does now.

    Does anyone see a problem with this simple solution?

Sounds OK to me to use %s to position the default-value display.

But I think you are also saying that the default value would always be added
to the prompt - either at the %s position or at the end. If so, what if
there is no default value (the DEF arg to completing-read is nil) - would it
add "(default: nil)" or "" to the prompt?

Could there also be a (general) way to inhibit display of the default value?
I sometimes massage the prompt to do slightly different things, and in some
cases I don't want to display the "(default: foobar)".

If this is a one-off for my uses, don't worry about it. Does anyone else see
a use for inhibiting the default-value display in the prompt?