[slime-devel] Re: Clicky things in the REPL.

[Helmut Eller]

lawrence mitchell <wence at gmx.li> writes:

> I thought one might be able to, on the swank side, specialise
> PRINT-OBJECT, or PRINT-UNREADABLE-OBJECT to add some extra
> information, perhaps something of the form:
> 
> "(:ok (:unreadable \"#<FUNCTION FOO>\" :type 'function :name 'foo))"

Just as an idea: you could use Emacs's syntax for strings with
text-properties (which is similar to CL's syntax for arrays :-).  The
example would then look like
  
 #("#<FUNCTION FOO>" 0 15 (:type function :name foo))

But I note that we use :ok messages only for the result of the
evaluation and not for the redirected output to streams.  For the
redirected output we use either a gray stream that sends :read-output
events or a dedicated socket connection with a simple process filter
on the Emacs side.  This can be configured with
swank::*use-dedicated-output-stream*.  A specialized gray stream with
some extra events is probably what you need.  But the dedicated socket
connection is faster and Emacs remains responsive if there is a lot of
output.

Helmut.