I agree that they should be shown as comments.

In many ways I like what happens (probably unintentionally) in my emacs
setup: I have rainbow-delimeters enabled, which colors the parentheses.
When I comment out the s-exp with #; the sexp looks commented out, but
the parentheses remain colored.  While an accident, that may be the
optimal behavior: it shows that it's commented out, but indicates
something about the sexp grouping being *structurally* commented out,
as opposed to a line or block comment.

But barring that, they should just render as comments :)

Daniel Prager writes:

> I find the #; construct very convenient for commenting out sexps, but in Dr
> Racket the visual cue of switching to comment-color is missing.
> Example (in Racket 6.12):
> [image: Screen Shot 2018-10-07 at 10.19.09 pm.png]
> Expected:
> *#lang racket*
> (display #|Comment|#
>          ; comment
>          #;(string-join "comm" "ent")
>          "Hello world")
> Dan

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