Ah, thanks.

Anyone else have other ideas for problems using syntax-properties, or maybe 
make-rename-transformers (with not-free-identifier=?), across modules?

--
William J. Bowman

On Sun, Dec 11, 2016 at 07:54:29PM -0500, Alex Knauth wrote:
> 
> > On Dec 11, 2016, at 7:20 PM, 'William J. Bowman' via Racket Users 
> > <racket-users@googlegroups.com> wrote:
> > 
> > Before I file a bug report, I want to make sure something *else* isn't 
> > going on.
> 
> It looks like "something else" is going on; according to 
> syntax-property-preserved? it's still marked as preserved in the program 
> below.
> 
> #lang racket
> (require racket/syntax)
> 
> (define stx (syntax-property #'x 'my-prop 5 #t))
> (syntax-property-preserved? stx 'my-prop)
> ;=> #true
> 
> ;; transfer properties from stx
> (define stx* (format-id #f "y" #:props stx))
> (syntax-property-preserved? stx* 'my-prop)
> ;=> #true
> 
> Alex Knauth
> 
> > In "format-id1.rkt" 
> > (https://gist.github.com/wilbowma/247d15e0e0bed6b239584854e79b5015), I 
> > define and export some identifiers with preserved syntax-properties. The 
> > identifier "id" is created using format-id with #:props to attach a 
> > syntax-property. The identifier "id2" is created using generate-temporary 
> > and a syntax-property is attached manually. I also use these the 
> > syntax-property in the same file. If I run or compile the file, no errors.
> > 
> > In "format-id2.rkt" 
> > (https://gist.github.com/wilbowma/ed071343c8c651f3a78d690a4ab7a392), I use 
> > the syntax-properties in exactly the same way. However, if I run or compile 
> > the file, I get errors that indicate "id" is missing it's syntax-property.
> > 
> > --
> > William J. Bowman
> > Northeastern University
> > College of Computer and Information Science
> 

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