Re: Code for cond*

[Alan Mackenzie <acm@muc.de>]

Hello, Richard.

On Wed, Jan 17, 2024 at 22:37:47 -0500, Richard Stallman wrote:
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> Here is the first draft of cond*.  I have tested some cases
> but I ask others to help in testing it more thoroughly.

> I invite constructive comments, bug reports, patches,
> and suggestions.

[ .... ]

One thing I noticed was that the implementation makes no use of macros,
except for a trivial macro which "renames" cond* itself.

This is in contrase to pcase.el, which uses macros extensively,
requiring lisp/emacs-lisp/macroexp.el to work.  In its turn macroexp.el
uses pcase.  This leads to an unlovely artifice at bootstrap time.

The macro in cond* can be expanded by Fmacroexpand in src/eval.c.  Thus,
at bootstrap, condstar.el could simply be loaded before macroexpand.el.

This is a Good Thing, and I'm sure it's not an accident.  Please keep
this feature as cond* get amended and further developed.

> -- 
> Dr Richard Stallman (https://stallman.org)
> Chief GNUisance of the GNU Project (https://gnu.org)
> Founder, Free Software Foundation (https://fsf.org)
> Internet Hall-of-Famer (https://internethalloffame.org)

-- 
Alan Mackenzie (Nuremberg, Germany).