Re: {A..z} brace expansion in Bash 3

[Chet Ramey]

Paul Jarc wrote:

> > > $ echo {Ä..D}
> > > That's accepted and produces output that seems to wrap round to ^A and
> > > then goes up to D. Note that I'm using an ISO-8859-1 locale. If that
> > > works at all, it should surely descend.
> >
> > If the first number or letter in the sequence evaluates greater than
> > the second, it will descend.

I will take a look, but it would help to know exactly which locale.

> Ä is greater than D, so it should descend, but Oliver says it ascends
> and wraps.  I'm using the C locale, and it doesn't expand at all.
> $ eval $'echo {\xC4..D}'
> {Ä..D}

Since only alphas and digits are accepted, if isalpha() doesn't return
true for 0xc4 (which it will not in the C locale), the shell will not
treat it as a valid sequence expression.

Presumably it returns true in Oliver's locale.

> Is there any way to get a range with "," or "." as one endpoint?

No.  Currently, only letters and digits are allowed.

Chet