rebase: fix bug that caused transitive copy records to disappear (
issue4192)
The defect was that copies were always duplicated against the target
revision, rather than the first parent of the revision being
rebased. This produced nominally correct results if changes were
rebased one at a time (or with --collapse), but was wrong if we
rebased a sequence of changesets which contained a sequence of copies.
test --time
$ hg --time help -q help 2>&1 | grep time > /dev/null
$ hg init a
$ cd a
#if lsprof
test --profile
$ hg --profile st 2>../out
$ grep CallCount ../out > /dev/null || cat ../out
$ hg --profile --config profiling.output=../out st
$ grep CallCount ../out > /dev/null || cat ../out
$ hg --profile --config profiling.format=text st 2>../out
$ grep CallCount ../out > /dev/null || cat ../out
$ echo "[profiling]" >> $HGRCPATH
$ echo "format=kcachegrind" >> $HGRCPATH
$ hg --profile st 2>../out
$ grep 'events: Ticks' ../out > /dev/null || cat ../out
$ hg --profile --config profiling.output=../out st
$ grep 'events: Ticks' ../out > /dev/null || cat ../out
#endif
$ cd ..