On 08/13/2012 08:42 AM, Stefan Monnier wrote:

> Thanks.  BTW, please undo the change that replaces access to
> overlay_after and overlay_before to by calls with OV_AFTER and
> OV_BEFORE.  Right now, I don't see any future direction that would
> benefit from such a change, so it just obfuscates the code.

OK, this is the partial revert: OV_xxx are dropped,
buffer_set_overlays_(before|after) are used to set an appropriate
pointers, and the rest is not touched (I suppose that unchain_both
and buffer_has_overlays are OK).

Dmitry