save-buffer like save-excursion

[Matthew Flaschen]

Is there a command like save-excursion that only saves the buffer?  I
have several functions that must set-buffer temporarily, then do things
that change point.  I always want these point changes, but if set-buffer
changed the buffer (not necessarily true), I want to reverse that change.

So, is there already a command for this?

Matt Flaschen