all messages for Emacs-related lists mirrored at yhetil.org
 help / color / mirror / code / Atom feed
From: Stefan Monnier <monnier@iro.umontreal.ca>
To: help-gnu-emacs@gnu.org
Subject: Re: How do I remove "reference to free variable" warnings on buffer-local variables?
Date: Wed, 11 Nov 2009 00:09:33 -0500	[thread overview]
Message-ID: <jwveio5odjx.fsf-monnier+gnu.emacs.help@gnu.org> (raw)
In-Reply-To: aa6ede77-acba-4443-b2de-a249b19c4e6c@k4g2000yqb.googlegroups.com

> I have code that uses buffer local variables. I don't want to declare
> this variable global. So how can I remove messages of the form
> "reference to free variable `...' " when I byte compile a file?

There is a special use of defvar designed specifically for that
situation:

  (defvar <my-var-here>)

this will have no effect other than silence the byte-compiler.


        Stefan


PS: If you really really want to, you can put it inside
`eval-when-compile', in which case it may currently work by accident,
but it logically shouldn't work (and may not work in the future) since
(defvar <foo>) does nothing when evaluated, and `eval-when-compile' asks
the byte-compiler to eval its argument instead of byte-compiling it.


      parent reply	other threads:[~2009-11-11  5:09 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-11-09 15:10 How do I remove "reference to free variable" warnings on buffer-local variables? rocky
2009-11-09 16:45 ` Tassilo Horn
2009-11-09 17:40   ` How do I remove "reference to free variable" warnings onbuffer-local variables? Drew Adams
2009-11-09 18:58     ` Tassilo Horn
     [not found] ` <mailman.10351.1257785158.2239.help-gnu-emacs@gnu.org>
2009-11-09 17:28   ` How do I remove "reference to free variable" warnings on buffer-local variables? rocky
2009-11-09 17:40 ` Pascal J. Bourguignon
2009-11-11  5:09 ` Stefan Monnier [this message]

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=jwveio5odjx.fsf-monnier+gnu.emacs.help@gnu.org \
    --to=monnier@iro.umontreal.ca \
    --cc=help-gnu-emacs@gnu.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
Code repositories for project(s) associated with this external index

	https://git.savannah.gnu.org/cgit/emacs.git
	https://git.savannah.gnu.org/cgit/emacs/org-mode.git

This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.