FWIW, DrRacket's module language apparently gets this one wrong somehow (at least it disagrees with running 'racket' in the shell).
Robby On Fri, Mar 16, 2012 at 3:31 PM, Danny Yoo <d...@cs.wpi.edu> wrote: > I'm trying to find information on what the default handler is, for the > prompts established at the toplevel of a module. From the following > program: > > ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; > #lang racket/base > > 1 > (call-with-continuation-prompt > (lambda () > (abort-current-continuation (default-continuation-prompt-tag) > (lambda () (printf "hello\n"))))) > > 2 > > (abort-current-continuation (default-continuation-prompt-tag) > (lambda () (printf "world\n"))) > > 3 > ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; > > I was expecting each statement to be wrapped in a prompt whose handler > re-establishes the prompt and calls the thunk, that is, I was > expecting the implicit handler: > > (lambda (abort-thunk) > (call-with-continuation-prompt abort-thunk prompt-tag #f)) > > wrapped around each toplevel module expression, and that I'd see > "1hello\n2world\n3". But as usual, I'm wrong. :) > > Where in the documentation can I find the behavior of the prompt > handler that's wrapped around each module toplevel expression? > ____________________ > Racket Users list: > http://lists.racket-lang.org/users ____________________ Racket Users list: http://lists.racket-lang.org/users
