Mercurial > hg
view tests/test-convert-clonebranches.t @ 17103:5146de7bce96
convert: keep branch switching merges with ancestors (issue3340)
When running convert with a filemap, merge parents which are ancestors
of other parents are ignored. This is hardly a problem when parents
belong to the same branch, but the result could be confusing when named
branches are involved. With:
-o-a1-a2-a3... <- A
\ \
b1-b2-b3...-m- <- B
If all b* revisions are discarded, it is useful to preserve 'm' even if
it is empty after filtering to record the branch switch.
This patch makes filemap preserve "ancestor parents" if there is no
"non-ancestor parent" on the same branch than the merge revision.
Remarks:
- I am not completely convinced by the reasons given above and those
detailed by Matt in this thread:
http://selenic.com/pipermail/mercurial-devel/2012-May/040627.html
The properties we try to preserve are not clearly defined. That said,
I know this patch already helped someone on IRC and the tests output
look reasonable.
- This is a new version of the original "convert: filemap must preserve
fast-forward merges" patch. It has exactly the same output for 2
parents merges, the additional complexity is here to handle more than
two parents.
author | Patrick Mezard <patrick@mezard.eu> |
---|---|
date | Mon, 18 Jun 2012 18:19:28 +0200 |
parents | 41885892796e |
children | 687ed69f6fdf |
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$ echo "[extensions]" >> $HGRCPATH $ echo "convert = " >> $HGRCPATH $ echo "[convert]" >> $HGRCPATH $ echo "hg.tagsbranch=0" >> $HGRCPATH $ hg init source $ cd source $ echo a > a $ hg ci -qAm adda Add a merge with one parent in the same branch $ echo a >> a $ hg ci -qAm changea $ hg up -qC 0 $ hg branch branch0 marked working directory as branch branch0 (branches are permanent and global, did you want a bookmark?) $ echo b > b $ hg ci -qAm addb $ hg up -qC $ hg merge default 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg ci -qm mergeab $ hg tag -ql mergeab $ cd .. Miss perl... sometimes $ cat > filter.py <<EOF > import sys, re > > r = re.compile(r'^(?:\d+|pulling from)') > sys.stdout.writelines([l for l in sys.stdin if r.search(l)]) > EOF convert $ hg convert -v --config convert.hg.clonebranches=1 source dest | > python filter.py 3 adda 2 changea 1 addb pulling from default into branch0 1 changesets found 0 mergeab pulling from default into branch0 1 changesets found Add a merge with both parents and child in different branches $ cd source $ hg branch branch1 marked working directory as branch branch1 (branches are permanent and global, did you want a bookmark?) $ echo a > file1 $ hg ci -qAm c1 $ hg up -qC mergeab $ hg branch branch2 marked working directory as branch branch2 (branches are permanent and global, did you want a bookmark?) $ echo a > file2 $ hg ci -qAm c2 $ hg merge branch1 1 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg branch branch3 marked working directory as branch branch3 (branches are permanent and global, did you want a bookmark?) $ hg ci -qAm c3 $ cd .. incremental conversion $ hg convert -v --config convert.hg.clonebranches=1 source dest | > python filter.py 2 c1 pulling from branch0 into branch1 4 changesets found 1 c2 pulling from branch0 into branch2 4 changesets found 0 c3 pulling from branch2 into branch3 5 changesets found pulling from branch1 into branch3 1 changesets found