I have implemented Jtangle (which extracts J code from JWiki pages) in J.
http://www.jsoftware.com/jwiki/AndrewNikitin/Jtangle
I also used it as a hack to load (which hack is described in
http://www.jsoftware.com/jwiki/AndrewNikitin/loadlit
The abridged verson is this:
Performing extra step of extracting code portion from literate source
before execution may be just enough bother to discourage its use
altogether. Therefore if it is integrated with load, it has more potential
to be actually used.
This way you keep your source as .lit, edit it this way and debug by running
usual load 'yourscript.lit'.
If there is a need the .lit may be published on Jwiki by pasting its contents
into edit form.
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