http://crca.ucsd.edu/~msp/Pd_documentation/x3.htm#s5
"Regardless of path, Pd should look first in the directory containing the patch before searching down the path. Pd does not automatically look in the current directory however; to enable that, include ." in the path. The
extra" directory, if enabled, is searched last."
This isn't true for new patches, which automatically get the current directory added to the path (at least on an Ubuntu Maverick machine running Pd version 0.42-6).
Also, if you do add a "." to the search path, then an object like [./blah] can refer either to "blah" in the patch directory (which, luckily, gets searched first) or the current directory. I've never used this feature but it seems really odd to have "./" referring to two different things at once.
-Jonathan
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