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Date: Thu, 2 Jul 2020 11:36:40 +0000
From: Daniel Shahaf <d.s@daniel.shahaf.name>
To: Peter Stephenson <p.w.stephenson@ntlworld.com>
Cc: zsh-users@zsh.org
Subject: Re: How to impose a numeric sort on negative numbers?
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Peter Stephenson wrote on Wed, 01 Jul 2020 20:42 +0100:
> +++ b/Doc/Zsh/expn.yo
> @@ -1097,6 +1097,11 @@ are sorted before those with fewer or none.  Hence=
 the array `tt(foo1 foo02
>  foo2 foo3 foo20 foo23)' is sorted into the order shown.
>  May be combined with `tt(i)' or `tt(O)'.
>  )
> +item(tt(DASH()))(
> +As tt(n), but a leading minus sign indicates a negative decimal
> +integer.  A solo `tt(DASH())' not followed by an integer does
> +not trigger numeric sorting.
> +)

In the texinfo build DASH() will emit _two_ hyphens, which would be
incorrect in this context.  I think both instances of DASH() should be
changed to use a literal minus sign.

The macro is defined as =C2=ABDEFINEMACRO(DASH)(0)(ifztexi(--)ifnztexi(-))=
=C2=BB.

Cheers,

Daniel