> From: Drew Adams Sent: Monday, October 08, 2007 3:25 PM
> The attached patch to ring.el provides these new functions:
> `ring-convert-sequence-to-ring',
> `ring-insert+extend', `ring-remove+insert+extend',
> `ring-member', `ring-next', `ring-previous'

Sorry; I meant to send the patch, not the patched file - see attached.

> Change log:
> 
> 2007-10-08  Drew Adams  <drew.adams@oracle.com>
> 
>   * ring.el: Added functions
>     ring-convert-sequence-to-ring, ring-insert+extend,
>     ring-remove+insert+extend, ring-member, ring-next,
>     ring-previous

Here's the Change log in standard format (IIUC):

2007-10-08  Drew Adams  <drew.adams@oracle.com>

	* ring.el (ring-convert-sequence-to-ring, ring-insert+extend,
	ring-remove+insert+extend, ring-member, ring-next, ring-previous):
	New functions.