Thanks.

What would be the method to request a fixed version or a patch fix be considered to include in the next release?  Would that have to go through Debian's wish-list request system?

> ls
21  22	23  a1	a2  a3	b1  b2	b3  c1	c2  c3	d1  d2	d3
> echo [a-d]*
a1 a2 a3 b1 b2 b3 c1 c2 c3 d1 d2 d3
> echo [a-d]?
a1 a2 a3 b1 b2 b3 c1 c2 c3 d1 d2 d3
> $0 --version
tcsh 6.24.01 (Astron) 2022-05-12 (x86_64-unknown-linux) options wide,nls,dl,al,kan,sm,rh,color,filec
>

So it's either fixed upstream already or you have something else going on.

In an empty directory, do these three commands:

    touch {a,b,c,d,2}{1,2,3}

    echo [a-d]*

    echo [a-d]?

Each of the echo commands prints this (modulo indentation):

    21 22 23 a1 a2 a3 b1 b2 b3 c1 c2 c3 d1 d2 d3

Each of the echo commands SHOULD print this (modulo indentation):

    a1 a2 a3 b1 b2 b3 c1 c2 c3 d1 d2 d3

The man page says this about a hyphen between square brackets:

    Within `[...]', a pair of characters separated by `-'  matches  any  character lexically between the two.

"2" is _NOT_ lexically between "a" and "d".  Therefore, the filenames that start with "2" should not be in the glob expansion.

This bug can result in files being deleted that should not have been deleted.