method combinations changing

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

    Date: Fri, 19 Jan 90 10:12:17 PST
    From: Patrick Dussud <dussud@lucid.com>

    Since method combination are very close to macros, could be adopt the same
    language about caching and calling? 

No, for the obvious reason that one can look at a program and point to
all the places where a macro is called, but one cannot find in the source
text of a program the places where a method combination type is called.
It happens inside of generic-function dispatch somewhere, and its arguments
come from method definitions scattered all over the program, not from a
single form at a single location in the source.  Thus what ANSI CL says about
when macros must be expanded cannot be reworded to apply to method combination.