Expand --exclude-if-present option to also support directories, symlinks, etc.

git-svn-id: http://svn.savannah.nongnu.org/svn/rdiff-backup@935 2b77aa54-bcbc-44c9-a7ec-4f6cf2b41109

trunk/rdiff-backup/CHANGELOG

 New in v1.2.2 (????/??/??)
 ---------------------------
 
+Adjust --exclude-if-present option to support directories, symlinks, device
+files, etc. Closes bug #24192. Thanks to Vadim Zeitlin for the suggestion.
 
 
 New in v1.2.1 (2008/08/24)

trunk/rdiff-backup/rdiff_backup/selection.py

@@ -478,7 +478,9 @@ probably isn't what you meant.""" %
 		assert include == 0 or include == 1
 
 		def sel_func(rp):
-			if rp.isdir() and rp.readable() and rp.append(presence_filename).isreg(): return include
+			if rp.isdir() and rp.readable() and \
+					rp.append(presence_filename).lstat():
+				return include
 			return None
 
 		sel_func.exclude = not include