convert: fix history topology when using hg.tagsbranch When using hg.tagsbranch, all conversions fail at transcribing the source repo topology with conversion scenarios interleaving: - initial repo conversion, - then upstream tag - then later incremental conversion The problem is caused by the usage of the last source revid as source revid for the tagnode in the revision map. On a later incremental conversion, when resolving some child commit of the true last source revid, convert will parent the nodes to the tag node. If using tagsbranch you get a bad topology where all incremental commit nodes end up in the tag branch. Analysis and test by Edouard Gomez <ed.gomez@free.fr>

--- a/hgext/convert/common.py	Sat Sep 05 18:56:51 2009 +0200
+++ b/hgext/convert/common.py	Sun Sep 06 15:29:14 2009 +0200
@@ -203,6 +203,8 @@
         """Put tags into sink.
 
         tags: {tagname: sink_rev_id, ...} where tagname is an UTF-8 string.
+        Return a pair (tag_revision, tag_parent_revision), or (None, None)
+        if nothing was changed.
         """
         raise NotImplementedError()