This is definitely pointing me where I want to go, thanks.

#lang racket

(let ([n (make-base-namespace)])
  (parameterize ([current-namespace n])
    (eval '(define oneplusone (+ 1 1)))
    (filter (lambda (y) (regexp-match #px"^one" y))
            (map (lambda (x) (symbol->string x)) (namespace-mapped-symbols 

On Tuesday, February 13, 2018 at 6:39:49 AM UTC-6, William G Hatch wrote:
> >On Wednesday, February 7, 2018 at 5:12:00 PM UTC-6, 
> wrote: 
> >> 
> >> My google-fu is failing me today.  Is there a concise way in Racket to 
> >> request possible completions for some Racket code? 
> Another function that may be useful for you is 
> `namespace-mapped-symbols`.  The readline library uses this to provide 
> completion in the repl. 

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