History behind this change: https://groups.google.com/d/msg/racket-users/1SVVqsg4ARQ/vVxKiAvaAQAJ Relevant commit: https://github.com/racket/redex/commit/cbb2d88b98fb814325f0d4ee468e1abaf4f6c3a7
So changing e_1 and e_2 to be anything that is *not* a non-terminal in your model should do the trick. -Sam Caldwell On Wed, Sep 6, 2017 at 2:39 PM, Ben Greenman <benjaminlgreen...@gmail.com> wrote: > 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...) >> >> Hello, >> >> 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 >> ... >> with >> [(--> (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 ( >> https://github.com/racket/redex/blob/master/redex-lib/redex/HISTORY.txt) >> 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 >> confusion >> >> 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! >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Racket Users" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to racket-users+unsubscr...@googlegroups.com. >> For more options, visit https://groups.google.com/d/optout. >> > > -- > You received this message because you are subscribed to the Google Groups > "Racket Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to racket-users+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
