Orthogonality of Sequence and Psuedo-Sequence Names.

[Ralph Corderoy]

Just got bitten by this on Ubuntu's nmh 1.1-release-3. Thought it could be
improved but no time personally so raising a bug for consideration up-stream.

    $ list() { pick -list "$@" | fmt; }
    $ list all
    1 2 3 4 5 6 7 8 9 10
    $ list .
    5
    $ list .:3
    5 6 7
    $ list .:-3
    3 4 5

OK so far.

    $ list first:3
    1 2 3
    $ list first:-3
    1

Again, OK. Matches behaviour of earlier if `.' was `first'.

    $ list last:3
    8 9 10
    $ list last:-3
    8 9 10

But, unlike `first', these give the same output. I'd expect `10' for
the first one as it would give if `.' was `last'.

    $ pick -seq foo all
    10 hits
    $ list foo
    1 2 3 4 5 6 7 8 9 10
    $ list foo:3
    1 2 3
    $ list foo:-3
    8 9 10

Nice behaviour.

    $ list all:3
    pick: bad message list all:3
    0
    $ list all:-3
    pick: bad message list all:-3
    0

But why can't I just use `all' instead of needing `foo' in the first place?