only roll back if there are changes

diff --git a/lib/File/Tree/Snapshot.pm b/lib/File/Tree/Snapshot.pm
index 43b3bfa..ec356d4 100644 (file)
--- a/lib/File/Tree/Snapshot.pm
+++ b/lib/File/Tree/Snapshot.pm
@@ -85,6 +85,8 @@ sub commit {
 sub reset {
     my ($self) = @_;
     $self->_git_exec('add .');
+    return 1
+        unless $self->_has_changes;
     $self->_git_exec('checkout -f');
     return 1;
 }