[Bug-AUCTeX] 24.3.1; RefTeX fails to find multiple bib files in \bibliography{} (with commas)

[Michael McNeil Forbes]

When specifying multiple .bib files in the \bibliography{} command,
reftex fails to recognize and read these.  Thus, the following works,
seaching for master.bib:

\bibliography{master}

however, the following, which first uses a file local.bib, then the
master.bib, fails (giving a "Sorry, no matches found" error when trying
to add a citation)

\bibliography{local,master}

I suspect that the comma is causing a problem, but have not been
able to track down exactly what should be changed

Is there a workaround?

Thanks,
Michael.
-------------

Emacs  : GNU Emacs 24.3.1 (x86_64-apple-darwin11.4.2, Carbon Version 1.6.0 
AppKit 1138.51)
 of 2013-03-08 on atago.hsd1.ma.comcast.net
Package: 24.3.1

current state:
==============
(setq
 window-system 'mac
 reftex-plug-into-AUCTeX t
 )