emacs-devel
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Emacs-diffs] trunk r117274: * emacs-lisp/cl-macs.el (cl-macrolet):


From: Stefan Monnier
Subject: Re: [Emacs-diffs] trunk r117274: * emacs-lisp/cl-macs.el (cl-macrolet): Avoid excessive progn's.
Date: Thu, 05 Jun 2014 17:02:29 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4.50 (gnu/linux)

> +    (let ((progn-maybe (lambda (body)
> +                      (if (cdr body) (cons 'progn body) (car body)))))

This is called macroexp-progn.

And instead of

   (let ((foo (lambda ...)))
     ... (funcall foo body) ...
     ... (funcall foo body) ...)

better do

   (let ((body-exp ...))
     ... body-exp ...
     ... body-exp ...)


-- Stefan



reply via email to

[Prev in Thread] Current Thread [Next in Thread]