TRACE commands

[pamoroso]

Suppose I define this Interlisp function:

Also suppose I want to trace the function and make TRACE display only a transformation of the list argument L, such as the reverse of L. I would expect (TRACE (FOO (REVERSE L))) to accomplish this but TRACE produces the usual output which doesn't include the transformed L:

Is it possible to do this with TRACE?

[nbriggs]

I don't think it has worked that way (i.e., as the IRM currently documents) since perhaps the Lyric release. You'd need to find the release Lyric/Medley release notes to see what the current implementation is capable of.

[pamoroso]

This seems indeed the case. From the Lyric release notes:

Also, non-atomic arguments to TRACE no longer specify forms the user wishes to see in the tracing output.

[pamoroso]

As noted in the release notes I can achieve the same result with advising:

(ADVISE 'FOO '(PRINT (REVERSE L)))