Brad King 9e518a8169 ExternalData: Allow DATA{} syntax to reference directories ...

Use a trailing slash to reference a directory.  Require that a list
of associated files be specified to select from within the directory.
One may simply use DATA{Dir/,REGEX:.*} to reference all files but
get a directory passed on the command line.

2013-01-30 10:05:07 -05:00

..

A.dat.md5

…

B.dat.md5

…

C.dat.md5

…