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Not to be confused with Partial clone, which trims the directory tree, not the history tree.

Problem: it would be nice to be able to drop history before a certain point and remove various branches or commits to save space and delete problematic material.

It is also important that we remember what we've deleted so we can avoid re-pulling it from people who've earlier pulled it from us.

Proposal: we can delete pieces of history by removing the deltas and recording a size of -1 in the index. This can be accomplished by a "punch" tool or command. Then we teach various things to behave or complain appropriately when they encounter punched versions.

To be done:

  • teach revlog about punched revisions and fixing up deltas
  • create punch command
  • make sure pull works
  • make sure checkout complains appropriately
  • make sure annotate does something sensible
  • make sure verify doesn't get too upset

Not to be confused with Partial clone, which trims the directory tree, not the history tree.

TrimmingHistory (last edited 2012-10-25 20:38:05 by mpm)