Something

--- /usr/bin/echangelog.old     2007-03-05 11:11:39.852730270 +1100
+++ /usr/bin/echangelog 2007-03-05 11:46:24.892730270 +1100
@@ -67,7 +67,8 @@
     !/files.digest|Manifest|ChangeLog/ or do { push @trivial, $_; 0; }
 } @files;
 @unknown = grep {
-    !/files.digest|Manifest|ChangeLog/ or do { push @trivial, $_; 0; }
+    !/files.digest|Manifest|ChangeLog|^\..*\.swp$/ or
+        do { push @trivial, $_; 0; }
 } @unknown;

 # Don't allow any conflicts