* mu-msg-field.[ch]: add attach/a MsgFieldId

src/mu-msg-fields.c

@@ -75,6 +75,14 @@ typedef struct _MuMsgField MuMsgField;
  * lowercase */
 static const MuMsgField FIELD_DATA[] = {
 	
+	{  
+		MU_MSG_FIELD_ID_ATTACH,
+		MU_MSG_FIELD_TYPE_STRING,
+		"attach" , 'a', 'A',  
+		FLAG_GMIME | FLAG_XAPIAN_TERM | FLAG_NORMALIZE |
+		FLAG_DONT_CACHE
+	},
+
 	{  
 		MU_MSG_FIELD_ID_BCC,
 		MU_MSG_FIELD_TYPE_STRING,

src/mu-msg-fields.h

@@ -29,7 +29,8 @@ G_BEGIN_DECLS
 enum _MuMsgFieldId {
 
 	/* first all the string-based ones */
-	MU_MSG_FIELD_ID_BCC         = 0,
+	MU_MSG_FIELD_ID_ATTACH	    = 0,
+	MU_MSG_FIELD_ID_BCC,
 	MU_MSG_FIELD_ID_BODY_HTML,
 	MU_MSG_FIELD_ID_BODY_TEXT,
 	MU_MSG_FIELD_ID_CC,