Re: BUG: ${var##(|A)} fails to find longest prefix

[Bart Schaefer <schaefer@xxxxxxxxxxxxxxxx>]

On Mon, May 12, 2025 at 4:55 PM Philippe Altherr
<philippe.altherr@xxxxxxxxx> wrote:
>
> But notice that here (A|) is followed by an extra A in the pattern: s=AA; echo ${s#(A|)A}

Ah, I had forgotten:  There is a special case for empty matches.

    45001: Fix zero-length matches with ${...%...}

    As the shortest match is preferred, zero-length matches beat any other.

As far as I know, this doesn't work with any non-empty pattern on the right.