# HG changeset patch
# User Artem Tikhomirov <tikhomirov.artem@gmail.com>
# Date 1327333894 -3600
# Node ID 729ba8f7d14eec222ed7638a81e709b00dc34b43
# Parent  c7a513d8ce20af52bcaac3861ed73bf6da86b0fa
Issue 22: UnsupportedOperationException when all files are deleted in a branch

diff -r c7a513d8ce20 -r 729ba8f7d14e src/org/tmatesoft/hg/internal/RevlogStream.java
--- a/src/org/tmatesoft/hg/internal/RevlogStream.java	Tue Jan 10 01:20:47 2012 +0400
+++ b/src/org/tmatesoft/hg/internal/RevlogStream.java	Mon Jan 23 16:51:34 2012 +0100
@@ -480,7 +480,7 @@
 						}
 					}
 					// XXX 
-					if (patchToPrevious) {
+					if (patchToPrevious && !userDataAccess.isEmpty()) {
 						// this is a patch
 						patch.read(userDataAccess);
 						userDataAccess.done();