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Date: Mon, 11 Apr 2016 13:31:45 +0100
From: Peter Stephenson <p.stephenson@samsung.com>
To: zsh workers <zsh-workers@zsh.org>
Subject: Re: Allow slash in alternation patterns in limited cases?
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On Mon, 11 Apr 2016 14:06:10 +0200
Mikael Magnusson <mikachu@gmail.com> wrote:

> On Mon, Apr 11, 2016 at 1:07 PM, Peter Stephenson
> <p.stephenson@samsung.com> wrote:
> > The point is that, unlike the ~ case which is just a flag passed in to
> > the pattern match parser, it would longer done by pattern matching at
> > all.  It would be done in the glob code.  The pattern match code would
> > see the foo, bar, baz, bong, and it would it be reassembled higher up.
> > So it's not so much incompatible as something utterly different.
> 
> This is already the same difference we have between (foo|bar) in
> globbing and pattern matching though. If it's a glob, it's handled
> recursively by scanner() and if it's pattern, it's somewhere else (I
> don't even know where the general pattern matching code is by heart).

No, expressions like (foo|bar) are *only* handled by the pattern
matcher.  The scanner's sole responsibility is to till the pattern
matcher whether or not it should stop if it sees a "/".

pws