Re: About features

[Barry Margolin]

In article <mailman.21537.1362564509.855.help-gnu-emacs@gnu.org>,
 Xue Fuqiao <xfq.free@gmail.com> wrote:

> In (info "(elisp) Coding Conventions"):
> 
>     * Put a call to `provide' at the end of each separate Lisp file.
>       *Note Named Features::.
> 
>     * If a file requires certain other Lisp programs to be loaded
>       beforehand, then the comments at the beginning of the file should
>       say so.  Also, use `require' to make sure they are loaded.  *Note
>       Named Features::.
> 
> Why should we use `provide' and `require'?  Is 
> `load'/`load-library'/`load-file' enough?  Thanks.

`require' doesn't reload the file if it has already been loaded.

-- 
Barry Margolin, barmar@alum.mit.edu
Arlington, MA
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