Re: How does {x..y} supposed to work?

[Greg Wooledge]

On Fri, May 14, 2021 at 07:10:05PM +0200, Mike Jonkmans wrote:
> On Thu, May 13, 2021 at 03:14:33PM -0400, Chet Ramey wrote:
> > On 5/13/21 12:02 PM, Peng Yu wrote:
> > > According to the manpage, x and y can be single characters. "the
> > > expression expands to each character lexicographically between x and
> > > y, inclusive".
> > 
> > Hmmmmm. So which would be better: "alphabetic character" or "letter"?
> 
> letter is better:
> - it is shorter
> - it rhymes 
> 
> Btw is this a posix restriction? It seems to be an unnecessary limitation.

POSIX does not specify brace expansion; it's a bash extension.

Also, both letter and alphabetic character are factually inaccurate.
A brace expansion may include non-alphabetic characters, as long as
they aren't first or last in the sequence.