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From: Stefan Monnier <monnier@iro.umontreal.ca>
To: help-gnu-emacs@gnu.org
Subject: Re: setting the mode of a buffer
Date: Thu, 13 Mar 2014 08:26:24 -0400	[thread overview]
Message-ID: <jwvmwgu1e70.fsf-monnier+gmane.emacs.help@gnu.org> (raw)
In-Reply-To: slrnli1nb5.37u.joost.m.kremers@j.kremers4.news.arnhem.chello.nl

> Reevaluating a defcustom will normally reset the value of the variable,
> so there's no need to unload and reload the file. 

C-h f defcustom

   [...]
   :initialize
   	VALUE should be a function used to initialize the
   	variable.  It takes two arguments, the symbol and value
   	given in the `defcustom' call.  The default is
   	`custom-initialize-reset'.
   [...]

C-h f custom-initialize-reset

   [...]
   The value is either the symbol's current value
    (as obtained using the `:get' function), if any,
   [...]

So, no, re-evaluating a defcustom will typically leave the variable at its
old value.

M-: (progn (defcustom sm-t 1 "hhaha") (defcustom sm-t 2 "hhaha") sm-t) RET

returns 1, not 2.  IOW, it works more like defvar than like defconst.


        Stefan




  reply	other threads:[~2014-03-13 12:26 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <mailman.16657.1394156425.10748.help-gnu-emacs@gnu.org>
2014-03-07  8:47 ` setting the mode of a buffer Joost Kremers
2014-03-07 11:28   ` lee
     [not found]   ` <mailman.16664.1394193871.10748.help-gnu-emacs@gnu.org>
2014-03-12 22:19     ` Joost Kremers
2014-03-13 12:26       ` Stefan Monnier [this message]
2014-03-15 21:12         ` lee
2014-03-15 21:09       ` lee
     [not found]       ` <mailman.17152.1394713615.10748.help-gnu-emacs@gnu.org>
2014-03-17 11:17         ` Joost Kremers
2014-03-07  0:10 lee

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