gitattributes: Clarify discussion of attribute macros
In particular, make it clear that attribute macros are themselves
recorded as attributes in addition to setting other attributes.
Signed-off-by: Michael Haggerty <mhagger@alum.mit.edu>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
diff --git a/Documentation/gitattributes.txt b/Documentation/gitattributes.txt
index 412c55b..ccb3f3f 100644
--- a/Documentation/gitattributes.txt
+++ b/Documentation/gitattributes.txt
@@ -879,16 +879,19 @@
------------
but that may become cumbersome, when you have many attributes. Using
-attribute macros, you can specify groups of attributes set or unset at
-the same time. The system knows a built-in attribute macro, `binary`:
+attribute macros, you can define an attribute that, when set, also
+sets or unsets a number of other attributes at the same time. The
+system knows a built-in attribute macro, `binary`:
------------
*.jpg binary
------------
-which is equivalent to the above. Note that the attribute macros can only
-be "Set" (see the above example that sets "binary" macro as if it were an
-ordinary attribute --- setting it in turn unsets "text" and "diff").
+Setting the "binary" attribute also unsets the "text" and "diff"
+attributes as above. Note that attribute macros can only be "Set",
+though setting one might have the effect of setting or unsetting other
+attributes or even returning other attributes to the "Unspecified"
+state.
DEFINING ATTRIBUTE MACROS
