Re: syntax taste: use of unquote in macros

[Matt Wette]

On 3/30/20 3:34 AM, address@hidden wrote:
> On Mon, Mar 30, 2020 at 12:07:07AM +0200, Zelphir Kaltstahl wrote:
> > On 3/29/20 5:11 PM, Matt Wette wrote:
> > > Hi All,
> > >
> > > I'm not sure if you know about this, but there is a discrepancy in the
> > > way some folks define macros to use unquote (aka ,).   For example,
> [pmatch vs. match]
>
> > I'm not sure where I first read about pmatch doing the quasiquote
> > internally automatically and I of course had already forgotten about it,
> [...]
>
> I didn't even know about `pmatch'. Is it supposed to be equivalent
> to `match' (except that outer quasiquote, that is)?
>
> With the caveat that I don't have much of a stylistic feeling for
> Scheme, I'd clearly prefer `match': the writer has the choice of
> quote or quasiquote, as appropriate to the case -- and the reader
> sees what's going on (after all, quote and quasiquote are "low
> weight" primitives: everyone more or less knows what they do.
>
> But perhaps I misunderstood what you're after?
>
> Cheers
> -- tomás

The other thing about match that is attractive is that use of
quasiquote+unquote is "reflexive" (or maybe self-adjoint?)
in the following sense:

'(foo "bar") => (match-lambda (`(foo ,val) `(foo ,val))) => '(foo "bar")