Is it possible to create a temporary file, write to it, run a command on it, and the possibly delete the file from within a macro? Or is it possible to run a command (as in `system`) in a context where it pretends that some file exists?
And, how does this play with DrRacket's background expansion? The reason I'm thinking about this is that I want to call out to an external compiler (for a language other than racket, not implemented in racket), get information back from that compiler, and display that information in the form of DrRacket's mouse-over-tooltips. I tried this, and it said "forbidden (write) access" to the temporary file name that it generated. I get this error from DrRacket's background expansion. Is there a way to do this in a way I can use while generating DrRacket tooltips? #lang racket (require (for-syntax racket/file)) (define-syntax m (λ (stx) (define tmp (make-temporary-file)) (display-to-file "hello there\n" tmp #:exists 'replace) #'(begin))) (m) ;open-output-file: forbidden (write) access to ;/var/folders/6f/5335m44s43g1zd2vqs7jmqsh0000gp/T/unsaved editor-7-16_15411123141541112314481 Alex Knauth -- 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.