A fix for 'file -m'. A directory in the filesystem is a binary blob.
'text/directory' refers to things like vCards.

Reference: /n/sources/patch/applied/file-m-directory-not-mime
Date: Sun Nov  1 23:40:49 CET 2009
Signed-off-by: lyndon@orthanc.ca

--- /sys/src/cmd/file.c	Sun Nov  1 23:39:42 2009
+++ /sys/src/cmd/file.c	Sun Nov  1 23:39:38 2009
@@ -335,7 +335,7 @@
 		return;
 	}
 	if(mbuf->mode & DMDIR) {
-		print(mime ? "text/directory\n" : "directory\n");
+		print(mime ? OCTET : "directory\n");
 		return;
 	}
 	if(mbuf->type != 'M' && mbuf->type != '|') {