At Sun, 25 Mar 2012 19:58:29 -0500, Robby Findler wrote: > On Sun, Mar 25, 2012 at 7:18 PM, Danny Yoo <d...@cs.wpi.edu> wrote: > > I'm still somewhat confused, because of the following: Compare: > > > > (syntax/loc #'foo [app op ...]) > > > > vs: > > > > (syntax [app op ...]) > > > > The first does not have paren-shape defined, while the second does. > > Is this intentional? > > I'm not sure if it is intentional, but it looks like syntax/loc's > implementation is not copying properties over > (racket/private/stxloc.rkt) when it creates the new syntax object with > the adjusted location. I guess it probably should (and it would not be > a difficult change), but probably best to get some consensus that this > is a good change first.
That sounds right to me. It's puzzling that `syntax/loc' explicitly uses `#f' for the property argument when calling `datum->syntax', instead of relying on the default #f; that suggests that I gave the argument some thought. But I think the explicit `#f' reflects a decision that the first form in `syntax/loc' shouldn't be used for properties (which would interfere with `syntax-original?', for example). Using the second form seems right, and it would produce the result that Danny wants. I'll try that change and push if it seems to work. _________________________ Racket Developers list: http://lists.racket-lang.org/dev
