Re: Issue: PRINT-PRETTY-HOOK (version 1)

[David A. Moon <Moon@STONY-BROOK.SCRC.Symbolics.COM>]

I don't think you answered my question.  Do you want to change the
effect of -all- calls to WRITE, PRINT, FORMAT ~S, etc.?  Or do you
want to only change the printing by interactive tools (you mentioned
the read-eval-print loop, the debugger, and trace)?

It sounds to me like what you want is a function you can redefine
(or equivalently a variable you can SETQ to a function) together
with a specification of in what situations the function will be
called.  Once that's clear a name can be chosen.  Possibly the
feature already exists in the language, via a :AROUND method
on PRINT-OBJECT with no specialized parameters, depending on whether
what that does is precisely what you wanted.