Re: when to call provide, first or last?

[Le Wang <l26wang@gmail.com>]

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On Mon, Feb 27, 2012 at 8:59 PM, Juanma Barranquero <lekktu@gmail.com>wrote:

> On Mon, Feb 27, 2012 at 13:47, Le Wang <l26wang@gmail.com> wrote:
>
> > Is there some disadvantage to calling it first that I'm not seeing?
>
> Try loading this file my-feature.el:
>
> ;;; starts here
> (provide 'my-feature)
> )
> (defun my-function ()
>  "")
> ;;; ends here
>
> with  emacs -Q -l my-feature.el, and you'll get:
>
> load-with-code-conversion: Invalid read syntax: ")"
>
> (featurep 'my-feature) => t
> (fboundp 'my-function) => nil
>

What happens next?  You have broken code, and you're either looking at the
backtrace or you get a ding.  How is this a problem?


> In other words, having `provide' at the end guarantees that the
> feature does not enter the feature list unless the file was correctly
> loaded.
>
>     Juanma
>



-- 
Le

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