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Re: [PATCH] Optionally use deltas in dumpfiles

From: Edmund Horner <chrysophylax_at_chrysophylax.cjb.net>
Date: 2004-03-29 03:32:50 CEST

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Greg Hudson wrote:
|>1. If --deltas is specified and a path is being added without
|>history, will it be stored as a delta against empty, or just as
|>fulltext? (I personally would prefer fulltext...)
|
|
| Hm, why would you prefer fulltext for adds-without-history? I just
| discovered that it's a one-line change to do adds as deltas against
| empty, and it saves another 25% on the diffy dumpfile size for the
| Subversion project repository. (The resulting diffy dumpfile isn't as
| compressible, but compressability wasn't really my goal.) It also
| seems more elegant to me, since we transmit commits of added files
| over the wire as deltas against empty.

Actually it's due to my ignorance. I've somehow never absorbed the fact
that deltas compress. I just preferred plaintext wherever possible
because (no offense) deltas look ugly (meaning they're hard to read).

Since they save that much I say forget what I was talking about.

Edmund.
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Received on Mon Mar 29 03:33:11 2004

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