Mercurial > hg > mercurial-crew-with-dirclash
view tests/test-issue522 @ 5378:8a2915f57dfc
convert: add a mode where mercurial_sink skips empty revisions.
The getchanges function of some converter_source classes can return
some false positives. I.e. they sometimes claim that a file "foo"
was changed in some revision, even though its contents are still the
same.
convert_svn is particularly bad, but I think this can also happen with
convert_cvs and, at least in theory, with mercurial_source.
For regular conversions this is not really a problem - as long as
getfile returns the right contents, we'll get a converted revision
with the right contents. But when we use --filemap, this could lead
to superfluous revisions being converted.
Instead of fixing every converter_source, I decided to change
mercurial_sink to work around this problem.
When --filemap is used, we're interested only in revisions that touch
some specific files. If a revision doesn't change any of these files,
then we're not interested in it (at least for revisions with a single
parent; merges are special).
For mercurial_sink, we abuse this property and rollback a commit if
the manifest text hasn't changed. This avoids duplicating the logic
from localrepo.filecommit to detect unchanged files.
author | Alexis S. L. Carvalho <alexis@cecm.usp.br> |
---|---|
date | Thu, 04 Oct 2007 23:21:37 -0300 |
parents | 90d9ec0dc69d |
children |
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#!/bin/sh # In the merge below, the file "foo" has the same contents in both # parents, but if we look at the file-level history, we'll notice that # the version in p1 is an ancestor of the version in p2. This test # makes sure that we'll use the version from p2 in the manifest of the # merge revision. hg init repo cd repo echo foo > foo hg ci -d '0 0' -qAm 'add foo' echo bar >> foo hg ci -d '0 0' -m 'change foo' hg backout -d '0 0' -r tip -m 'backout changed foo' hg up -C 0 touch bar hg ci -d '0 0' -qAm 'add bar' hg merge --debug hg debugstate | grep foo hg st -A foo hg ci -d '0 0' -m 'merge' hg manifest --debug | grep foo hg debugindex .hg/store/data/foo.i