"read-accept-lang" and "read-accept-reader" seem to do most of the work.
There is still a few details to attend to. What McFly Tools currently does before calling progedit for the simpler case of "info.rkt" files only is to identify one of 3 different formats: no module, #lang, and "(module ...)", and go from there. ("#lang" seemed to introduce a "#%module-begin" that "(module ...)" didn't.)
McFly Tools punts on whether an alternative reader (e.g., "at-reader") might be in effect where it makes its edits, although "progedit" does have a "#:write-stx" argument with this problem in mind.
Neil V. ____________________ Racket Users list: http://lists.racket-lang.org/users
