>> Loading vhdl-mode...done
>> Package assoc is obsolete!
> It would, perhaps, be nice if the "obsolete" message described the
> require trace? Like
> Package assoc is obsolete (loaded via foo->bar->zot->vhdl-mode)
But this reminds me of a feature that I'd really like to see: Being able
to instrument a message for a backtrace.
That is, say `M-x backtrace-message RET obsolete RET', and then get a
backtrace whenever a string matching "obsolete" is messaged.
Especially with warning messages is can be really difficult to find out
the call sequence.