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Sam
On Fri, Nov 30, 2018 at 10:56 AM Habib Alamin <ha.ala...@gmail.com> wrote:
>
> Great points which I’d overlooked. It solved the immediate problem; thanks 
> for this improved approach.
>
> I’ll be implementing that soon (hoping it works). I just gotta decide where 
> to place the enter file for maximum reusability.
>
> Does anyone know where I could report this misfeature, by the way?
>
> Sent from my iPhone
>
> > On 30 Nov 2018, at 2:23 pm, Sam Tobin-Hochstadt <sa...@cs.indiana.edu> 
> > wrote:
> >
> > I strongly recommend not doing this. In particular, it will break in
> > many situations. A few examples:
> > - any file that isn't written in #lang racket such as typed/racket or
> > scribble/manual or ...
> > - any file that doesn't work the same as a sequence of repl
> > interactions. For example, any use of mutual recursion or any
> > shadowing of imported ids
> > - any file that uses forms only allowed in modules, such as `module+`
> > or `provide`.
> >
> > I'm not sure why `-e` doesn't evaluate in the same namespace as the
> > REPL, but if you put `(enter! "my-file.rkt")` in `enter.rktl` then:
> >
> > $ racket -i -f enter.rktl
> >
> > will do what you want.
> >
> > You can generalize this to:
> >
> > (dynamic-enter! (vector-ref (current-command-line-arguments) 0))
> >
> > and then:
> >
> > $ racket -i -f enter.rktl my-file.rkt
> >
> > will do what you wanted.
> >
> > Sam
> >
> >
> >
> >> On Fri, Nov 30, 2018 at 4:36 AM Habib Alamin <ha.ala...@gmail.com> wrote:
> >>
> >> I found a solution:
> >>
> >> nnoremap <leader>r :w \| !racket -e "$(grep -v '\#lang' %)" -i<cr>
> >>
> >> This little hack, instead of enter!ing a file, simply echoes the contents 
> >> of the file into the -e argument using a subshell. Racket treats newlines 
> >> the same as spaces, and ignores blank lines, but if you're a neat freak, 
> >> you can do:
> >>
> >> nnoremap <leader>r :w \| !racket -e "$(grep -Ev '(\#lang)\|(^$)' % \| tr 
> >> '\n' ' ')" -i<cr>
> >>
> >>> On Friday, 30 November 2018 01:36:11 UTC, Habib Alamin wrote:
> >>>
> >>> Hi,
> >>>
> >>> I'm trying to set up a keybinding in my editor to enter the namespace of 
> >>> my current file in a REPL, similar to how Dr Racket's Run button works.
> >>>
> >>> I can do a racket -e '(println "Hello!") -i and it loads the REPL after 
> >>> printing Hello. A racket -e '(define a "a") -i also works, in that I'm 
> >>> able to access a in the REPL. However, I can't do racket -e '(enter! 
> >>> "hello.rkt")' -i. The REPL starts, but I can't access anything defined in 
> >>> the file.
> >>>
> >>> After asking in the IRC channel, I was asked to try
> >>>
> >>> racket -e '(let ([racketrc-path (expand-user-path "~/.racketrc")]) (and 
> >>> (file-exists? racketrc-path) (load racketrc-path)) (void)) (enter! 
> >>> "current-file.rkt") (read-eval-print-loop)
> >>>
> >>> which didn't work either. Neither did
> >>>
> >>> racket -e '(enter! "file.rkt") (read-eval-print-loop)'
> >>>
> >>> I can do a racket -if file.rkt if I get rid of the #lang racket line, but 
> >>> I hear using -f isn't good practice, and besides, I want to write valid 
> >>> Racket files; removing the #lang line breaks normal Racket operation; I 
> >>> can't just do a racket file.rkt.
> >>>
> >>> I'd really appreciate any help in figuring out why this is happening and 
> >>> a simple fix.
> >>>
> >>> Cheers,
> >>> Habib
> >>
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