Mercurial > hg
view tests/test-revlog-ancestry.py @ 18136:f23dea2b296e
copies: do not track backward copies, only renames (issue3739)
The inverse of a rename is a rename, but the inverse of a copy is not a copy.
Presenting it as such -- in particular, stuffing it into the same dict as real
copies -- causes bugs because other code starts believing the inverse copies
are real.
The only test whose output changes is test-mv-cp-st-diff.t. When a backwards
status -C command is run where a copy is involved, the inverse copy (which was
hitherto presented as a real copy) is no longer displayed.
Keeping track of inverse copies is useful in some situations -- composability
of diffs, for example, since adding "a" followed by an inverse copy "b" to "a"
is equivalent to a rename "b" to "a". However, representing them would require
a more complex data structure than the same dict in which real copies are also
stored.
author | Siddharth Agarwal <sid0@fb.com> |
---|---|
date | Wed, 26 Dec 2012 15:04:07 -0800 |
parents | f88c60e740a1 |
children | 43c00ca887d1 |
line wrap: on
line source
import os from mercurial import hg, ui, merge u = ui.ui() repo = hg.repository(u, 'test1', create=1) os.chdir('test1') def commit(text, time): repo.commit(text=text, date="%d 0" % time) def addcommit(name, time): f = open(name, 'w') f.write('%s\n' % name) f.close() repo[None].add([name]) commit(name, time) def update(rev): merge.update(repo, rev, False, True, False) def merge_(rev): merge.update(repo, rev, True, False, False) if __name__ == '__main__': addcommit("A", 0) addcommit("B", 1) update(0) addcommit("C", 2) merge_(1) commit("D", 3) update(2) addcommit("E", 4) addcommit("F", 5) update(3) addcommit("G", 6) merge_(5) commit("H", 7) update(5) addcommit("I", 8) # Ancestors print 'Ancestors of 5' for r in repo.changelog.ancestors([5]): print r, print '\nAncestors of 6 and 5' for r in repo.changelog.ancestors([6, 5]): print r, print '\nAncestors of 5 and 4' for r in repo.changelog.ancestors([5, 4]): print r, print '\nAncestors of 7, stop at 6' for r in repo.changelog.ancestors([7], 6): print r, print '\nAncestors of 7, including revs' for r in repo.changelog.ancestors([7], inclusive=True): print r, print '\nAncestors of 7, 5 and 3, including revs' for r in repo.changelog.ancestors([7, 5, 3], inclusive=True): print r, # Descendants print '\n\nDescendants of 5' for r in repo.changelog.descendants([5]): print r, print '\nDescendants of 5 and 3' for r in repo.changelog.descendants([5, 3]): print r, print '\nDescendants of 5 and 4' for r in repo.changelog.descendants([5, 4]): print r,