Mercurial > hg-stable
view tests/test-merge-default @ 10189:e451e599fbcf
patch: support diff data loss detection and upgrade
In worst case, generating diff in upgrade mode can be two times more expensive
than generating it in git mode directly: we may have to regenerate the whole
diff again whenever a git feature is detected. Also, the first diff attempt is
completely buffered instead of being streamed. That said, even without having
profiled it yet, I am convinced we can fast-path the upgrade mode if necessary
were it to be used in regular diff commands, and not only in mq where avoiding
data loss is worth the price.
author | Patrick Mezard <pmezard@gmail.com> |
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date | Fri, 01 Jan 2010 20:54:05 +0100 |
parents | 6d36fc70754e |
children | a5576908b589 |
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#!/bin/sh hg init echo a > a hg commit -A -ma echo a >> a hg commit -mb echo a >> a hg commit -mc hg up 1 echo a >> a hg commit -md hg up 1 echo a >> a hg commit -me hg up 1 echo % should fail because not at a head hg merge hg up echo % should fail because \> 2 heads hg merge echo % should succeed hg merge 2 hg commit -mm1 echo % should succeed - 2 heads hg merge -P hg merge hg commit -mm2 echo % should fail because at tip hg merge hg up 0 echo % should fail because 1 head hg merge true