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Advise against unnecessary merges from trunk to feature branches.
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1 NOTES ON COMMITTING TO EMACS'S BAZAAR REPO -*- outline -*-
2
3 * Install changes only on one branch, let them get merged elsewhere if needed.
4 In particular, install bug-fixes only on the release branch (if there
5 is one) and let them get synced to the trunk; do not install them by
6 hand on the trunk as well. E.g. if there is an active "emacs-23" branch
7 and you have a bug-fix appropriate for the next Emacs-23.x release,
8 install it only on the emacs-23 branch, not on the trunk as well.
9
10 Installing things manually into more than one branch makes merges more
11 difficult.
12
13 http://lists.gnu.org/archive/html/emacs-devel/2010-03/msg01124.html
14
15 * Backporting a bug-fix from the trunk to a branch (e.g. "emacs-23").
16 Label the commit as a backport, e.g. by starting the commit message with
17 "Backport:". This is helpful for the person merging the release branch
18 to the trunk.
19
20 http://lists.gnu.org/archive/html/emacs-devel/2010-05/msg00262.html
21
22 * Installing changes from your personal branches.
23 If your branch has only a single commit, or many different real
24 commits, it is fine to do a merge. If your branch has only a very
25 small number of "real" commits, but several "merge from trunks", it is
26 preferred that you take your branch's diff, apply it to the trunk, and
27 commit directly, not merge. This keeps the history cleaner.
28
29 In general, when working on some feature in a separate branch, it is
30 preferable not to merge from trunk until you are done with the
31 feature. Unless you really need some change that was done on the
32 trunk while you were developing on the branch, you don't really need
33 those merges; just merge once, when you are done with the feature, and
34 Bazaar will take care of the rest. Bazaar is much better in this than
35 CVS, so interim merges are unnecessary.
36
37 Or use shelves; or rebase; or do something else. See the thread for
38 yet another fun excursion into the exciting world of version control.
39
40 http://lists.gnu.org/archive/html/emacs-devel/2010-04/msg00086.html