[Pkg-bazaar-commits] ./bzr/unstable r709: - when writing a revision, store the first parent as the precursor

[Martin Pool]

------------------------------------------------------------
revno: 709
committer: Martin Pool <mbp at sourcefrog.net>
timestamp: Mon 2005-06-20 13:33:24 +1000
message:
  - when writing a revision, store the first parent as the precursor
    to support old readers
modified:
  bzrlib/revision.py
-------------- next part --------------
=== modified file 'bzrlib/revision.py'
--- a/bzrlib/revision.py	2005-06-20 03:31:09 +0000
+++ b/bzrlib/revision.py	2005-06-20 03:33:24 +0000
@@ -119,10 +119,6 @@
                        )
         if self.timezone:
             root.set('timezone', str(self.timezone))
-        if self.precursor:
-            root.set('precursor', self.precursor)
-            if self.precursor_sha1:
-                root.set('precursor_sha1', self.precursor_sha1)
         root.text = '\n'
         
         msg = SubElement(root, 'message')
@@ -130,6 +126,14 @@
         msg.tail = '\n'
 
         if self.parents:
+            # first parent stored as precursor for compatability with 0.0.5 and
+            # earlier
+            pr = self.parents[0]
+            root.set('precursor', pr.revision_id)
+            if pr.revision_sha1:
+                root.set('precursor_sha1', pr.revision_sha1)
+                
+        if self.parents:
             pelts = SubElement(root, 'parents')
             pelts.tail = pelts.text = '\n'
             for rr in self.parents: