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convert: add a mode where mercurial_sink skips empty revisions....
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.
Alexis S. L. Carvalho - - Load All Authors

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Alexis S. L. Carvalho
merge: forcefully mark files that we get from the second parent as dirty...
 r5210 #!/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