GNU bug report logs - #13021
24.2.90; compile eval-after-load form

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Christopher Schmidt <christopher <at> ch.ristopher.com>
Subject: bug#13021: closed (Re: bug#13021: 24.2.90; compile
 eval-after-load form)
Date: Wed, 19 Jun 2013 23:56:02 +0000

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Your bug report

#13021: 24.2.90; compile eval-after-load form

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 13021 <at> debbugs.gnu.org.

-- 
13021: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=13021
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Christopher Schmidt <christopher <at> ch.ristopher.com>
To: 13021-done <at> debbugs.gnu.org
Subject: Re: bug#13021: 24.2.90; compile eval-after-load form
Date: Thu, 20 Jun 2013 00:55:27 +0100 (BST)

Christopher Schmidt <christopher <at> ch.ristopher.com> writes:
> I think it is a good idea to compile the form that is passed to
> eval-after-load.

There is with-eval-after-load now.

        Christopher

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From: Christopher Schmidt <christopher <at> ch.ristopher.com>
To: bug-gnu-emacs <at> gnu.org
Cc: Michael Heerdegen <michael_heerdegen <at> web.de>
Subject: 24.2.90; compile eval-after-load form
Date: Wed, 28 Nov 2012 15:05:56 +0000 (GMT)

severity: wishlist

I think it is a good idea to compile the form that is passed to
eval-after-load.  The advantage is that one gets compiler warnings and
errors and the form itself is executed faster.

This is what I use:

    (defmacro eal (package &rest forms)
      (declare (indent 1) (debug t))
      `(,(if (if (symbolp package)
                 (require package nil t)
               (load package t t))
             'progn
           (message "eal: cannot find %s" package)
           'with-no-warnings)
        (eval-after-load ',package
          `(funcall (function ,(lambda () ,@forms))))))

This is what Michael (Heerdegen) uses:

    (defun-safe init-file-eval-after-load (file &rest forms)
      "Like `eval-after-load', but byte-compile FORMS before eval."
      (eval-after-load file `(let ((byte-compile-log-buffer "*Warnings*")
                                   (byte-compile-current-form
                                    (format "`init-file-eval-after-load': %s" ',file)))
                               (funcall (byte-compile (lambda () ,@forms))))))

Could vanilla eval-after-load be modified so it compiles the form?  I am
thinking of an optional third parameter, one that allows to either keep
the current behaviour (default), load the package & compile the form at
compile time or compile the form at run-time before evaling.

WDYT?

        Christopher

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