Mercurial > hg > mercurial-crew-with-dirclash

diff mercurial/revlog.py @ 224:ccbcc4d76f81

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fix bad assumption about uniqueness of file versions -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 fix bad assumption about uniqueness of file versions Mercurial had assumed that a given file hash could show up in only one changeset, and thus that the mapping from file revision to changeset was 1-to-1. But if two people perform the same edit with the same parents, we can get an identical hash in different changesets. So we've got to loosen up our uniqueness checks in addgroup and in verify. manifest hash: 5462003241e7d071ffa1741b87a59f646c9988ed -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (GNU/Linux) iD8DBQFCoMDkywK+sNU5EO8RAg9PAJ9YWSknfFBoeYve/+Z5DDGGvytDkwCgoMwj kT01PcjNzGPr1/Oe5WRvulE= =HC4t -----END PGP SIGNATURE-----
author mpm@selenic.com
date Fri, 03 Jun 2005 12:43:16 -0800
parents 2bfe525ef6ca
children 4f802588cdfb 4f802588cdfb afe895fcc0d0
line wrap: on
line diff
--- a/mercurial/revlog.py
+++ b/mercurial/revlog.py
@@ -433,7 +433,7 @@ class revlog:
 
         yield struct.pack(">l", 0)
 
-    def addgroup(self, revs, linkmapper, transaction):
+    def addgroup(self, revs, linkmapper, transaction, unique = 0):
         # given a set of deltas, add them to the revision log. the
         # first delta is against its parent, which should be in our
         # log, the rest are against the previous delta.
@@ -463,7 +463,10 @@ class revlog:
             node, p1, p2, cs = struct.unpack("20s20s20s20s", chunk[:80])
             link = linkmapper(cs)
             if node in self.nodemap:
-                raise "already have %s" % hex(node[:4])
+                # this can happen if two branches make the same change
+                if unique:
+                    raise "already have %s" % hex(node[:4])
+                continue
             delta = chunk[80:]
 
             if not chain: