I think it'll work if you delete the underscores, e.g. change "e_1" to "e1".
On Wed, Sep 6, 2017 at 2:22 PM, <natasha_da...@brown.edu> wrote:
> (For some reason the mail I sent to users<at>racket-lang.org last week
> never made it to the Google Group, so I'm posting directly...)
> I'm a 2nd year PhD student working with Shriram Krishnamurthi on improving
> Redex's testing/checking performance and capabilities.
> I was looking to use LambdaJS (http://cs.brown.edu/research/
> plt/dl/jssem/v1/) as a case study, but unfortunately jscore.ss does not
> compile under the latest version of Redex.
> The shortcut used in the eval reduction relation
> [(--> (σ (in-hole E e_1)) (σ (in-hole E e_2)))
> (==> e_1 e_2)]))
> now throws an error "reduction-relation: shortcut name may not be a
> non-terminal in: e_1."
> I believe this was caused by the following change (
> in Redex v6.4:
> changed shortcuts in --> so that non-terminals are no
> longer allowed for the names in the shortcut "parameters"
> These shortcut names were never constrained to actually be
> non-terminals, so this change is intended entirely to be
> able to give a helpful error message in an attempt to avoid
> As a Redex novice, I'm failing to avoid confusion in this case. Any advice
> on a simple way to change the shortcut / reduction relation to respect this
> change in Redex is greatly appreciated.
> Thanks for the help!
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