From: "Eric S. Raymond" <esr@thyrsus.com>
To: "Richard Earnshaw (lists)" <Richard.Earnshaw@arm.com>
Cc: Joseph Myers <jsm@polyomino.org.uk>,
Jakub Jelinek <jakub@redhat.com>,
Maxim Kuvyrkov <maxim.kuvyrkov@linaro.org>,
GCC Development <gcc@gcc.gnu.org>,
Alexandre Oliva <oliva@gnu.org>, Jeff Law <law@redhat.com>,
Segher Boessenkool <segher@kernel.crashing.org>,
Mark Wielaard <mark@klomp.org>
Subject: Re: Proposal for the transition timetable for the move to GIT
Date: Sat, 28 Dec 2019 02:27:00 -0000 [thread overview]
Message-ID: <20191228022742.GB22756@thyrsus.com> (raw)
In-Reply-To: <6ad79ec1-5a2e-fd88-6c3c-832feaea5caf@arm.com>
Richard Earnshaw (lists) <Richard.Earnshaw@arm.com>:
> Well, personally, I'd rather we didn't throw away data we have in our
> current SVN repo unless it's unpresentable in the final conversion.
I agree with this philosophy. You will have noticed by now, I hope,
that reposurgeon peserves as much as it can, leaving deletions to be
a matter of user policy.
In the normal case, reposurgeon could save its users a significant
amount of work by being more aggressive about automatically deleting
remnant bits that are merely *very unlikely* to be useful. I deliberately
refused to go thar route.
> Merge info is not one of those cases.
Sometimes. Some Subversion mergeinfo operations map to Git's
branch-centric merging. Many do not, corresponding to cherry-picks
that cannot be expressed in a Git history.
Reposurgeon does a correct but not complete job of translating
mergeinfos that compose into branch merges. It handles the simple,
cmmon cases and punts the tricky ones.
More coverage would theoretically be possible, but I don't
have the faintest clue what a general resolution rule would
look like. Except I'm pretty sure the problem is bitchy-hard
and the solution really easy to get subtly wrong.
Frankly, I don't want to touch this mess with insulated
tongs. Somebody would have to offer me serious money to
compensate for the expected level of pain.
--
<a href="http://www.catb.org/~esr/">Eric S. Raymond</a>
next prev parent reply other threads:[~2019-12-28 2:27 UTC|newest]
Thread overview: 198+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-17 12:02 Richard Earnshaw (lists)
2019-09-17 12:24 ` Richard Biener
2019-09-17 13:50 ` Richard Earnshaw (lists)
2019-09-17 16:35 ` Joseph Myers
2019-09-17 17:51 ` Richard Earnshaw (lists)
2019-09-17 16:33 ` Joseph Myers
2019-09-19 12:04 ` Janne Blomqvist
2019-09-19 14:43 ` Damian Rouson
2019-09-19 15:30 ` Janne Blomqvist
2019-10-25 14:10 ` Richard Earnshaw (lists)
2019-10-25 16:32 ` Jeff Law
2019-09-19 15:30 ` Richard Earnshaw (lists)
2019-09-19 15:49 ` Damian Rouson
2019-09-19 15:35 ` Maxim Kuvyrkov
2019-12-06 14:44 ` Maxim Kuvyrkov
2019-12-06 17:21 ` Eric S. Raymond
2019-12-06 17:39 ` Richard Biener
2019-12-06 19:46 ` Eric S. Raymond
2019-12-06 20:43 ` Sandra Loosemore
2019-12-07 2:57 ` Segher Boessenkool
2019-12-09 18:19 ` Joseph Myers
2019-12-09 18:40 ` Bernd Schmidt
2019-12-09 20:45 ` Joseph Myers
2019-12-09 22:12 ` Eric S. Raymond
2019-12-09 19:28 ` Eric S. Raymond
2019-12-11 14:40 ` Maxim Kuvyrkov
2019-12-11 15:03 ` Richard Earnshaw (lists)
2019-12-11 15:19 ` Jonathan Wakely
2019-12-11 15:21 ` Richard Earnshaw (lists)
2019-12-11 15:36 ` Joseph Myers
2019-12-11 16:02 ` Jonathan Wakely
2019-12-11 17:47 ` Eric S. Raymond
2019-12-16 2:19 ` Joseph Myers
2019-12-11 15:30 ` Dennis Luehring
2019-12-11 15:36 ` Richard Earnshaw
2019-12-11 17:36 ` Eric S. Raymond
2019-12-06 20:49 ` Bernd Schmidt
2019-12-16 9:53 ` Mark Wielaard
2019-12-16 11:29 ` Joseph Myers
2019-12-16 12:43 ` Mark Wielaard
2019-12-16 13:36 ` Segher Boessenkool
2019-12-16 13:54 ` Eric S. Raymond
2019-12-16 14:05 ` Segher Boessenkool
2019-12-16 14:13 ` Joseph Myers
2019-12-16 15:37 ` Segher Boessenkool
2019-12-16 16:36 ` Joseph Myers
2019-12-16 17:40 ` Jeff Law
2019-12-25 8:12 ` Alexandre Oliva
2019-12-25 12:07 ` Eric S. Raymond
2019-12-25 12:24 ` Segher Boessenkool
2019-12-25 14:16 ` Joseph Myers
2019-12-25 18:50 ` Eric S. Raymond
2019-12-25 19:18 ` Segher Boessenkool
2019-12-26 6:09 ` Alexandre Oliva
2019-12-26 11:04 ` Joseph Myers
2019-12-26 11:17 ` Jakub Jelinek
2019-12-26 12:10 ` Joseph Myers
2019-12-26 16:11 ` Maxim Kuvyrkov
2019-12-26 16:58 ` Joseph Myers
2019-12-26 18:36 ` Jakub Jelinek
2019-12-26 18:59 ` Joseph Myers
2019-12-27 11:21 ` Richard Earnshaw (lists)
2019-12-27 11:33 ` Andrew Pinski
2019-12-27 13:35 ` Segher Boessenkool
2019-12-27 11:35 ` Joseph Myers
2019-12-27 12:37 ` Richard Earnshaw (lists)
2019-12-28 2:27 ` Eric S. Raymond [this message]
2019-12-28 11:23 ` Joseph Myers
2019-12-28 12:19 ` Segher Boessenkool
2019-12-28 17:11 ` Richard Earnshaw (lists)
2019-12-28 20:28 ` Segher Boessenkool
2019-12-29 1:45 ` Julien "FrnchFrgg" Rivaud
2019-12-29 10:41 ` Segher Boessenkool
2019-12-29 11:02 ` Richard Biener
2019-12-29 11:47 ` Julien '_FrnchFrgg_' RIVAUD
2019-12-29 13:31 ` Segher Boessenkool
2019-12-29 13:51 ` Julien '_FrnchFrgg_' RIVAUD
2019-12-29 12:15 ` Segher Boessenkool
2019-12-29 16:32 ` Richard Earnshaw
2019-12-29 16:37 ` Julien '_FrnchFrgg_' RIVAUD
2019-12-29 11:42 ` Julien '_FrnchFrgg_' RIVAUD
2019-12-29 13:26 ` Segher Boessenkool
2019-12-29 13:48 ` Julien '_FrnchFrgg_' RIVAUD
2019-12-29 15:01 ` Segher Boessenkool
2019-12-29 17:31 ` Ian Lance Taylor via gcc
2019-12-30 0:31 ` Julien "FrnchFrgg" Rivaud
2019-12-29 21:31 ` Thomas Koenig
2019-12-29 23:57 ` Jeff Law
2019-12-27 13:29 ` Segher Boessenkool
2019-12-26 20:31 ` Richard Biener
2019-12-27 1:32 ` Joseph Myers
2019-12-27 10:14 ` Maxim Kuvyrkov
2019-12-28 1:55 ` Eric S. Raymond
2019-12-29 18:31 ` Maxim Kuvyrkov
2019-12-29 18:55 ` Joseph Myers
2019-12-29 22:47 ` Eric S. Raymond
2019-12-29 23:00 ` Joseph Myers
2019-12-29 23:13 ` Segher Boessenkool
2019-12-30 15:36 ` Richard Earnshaw (lists)
2019-12-30 22:37 ` Segher Boessenkool
2019-12-30 22:58 ` Joseph Myers
2019-12-31 0:23 ` Segher Boessenkool
2019-12-31 12:48 ` Segher Boessenkool
2019-12-31 3:09 ` Eric S. Raymond
2019-12-29 22:24 ` Richard Earnshaw (lists)
2019-12-30 0:18 ` Joseph Myers
2019-12-30 0:44 ` Julien "FrnchFrgg" Rivaud
2019-12-30 12:39 ` Maxim Kuvyrkov
2019-12-30 13:01 ` Maxim Kuvyrkov
2019-12-30 15:31 ` Richard Earnshaw (lists)
2019-12-30 15:49 ` Maxim Kuvyrkov
2019-12-30 16:08 ` Richard Earnshaw (lists)
2020-01-02 2:59 ` Alexandre Oliva
2020-01-02 10:58 ` Richard Earnshaw (lists)
2020-01-08 20:46 ` Maxim Kuvyrkov
2020-01-08 22:11 ` Eric S. Raymond
2020-01-08 23:34 ` Joseph Myers
2020-01-09 2:38 ` Segher Boessenkool
2020-01-09 12:12 ` Richard Earnshaw (lists)
2020-01-09 14:01 ` Eric S. Raymond
2020-01-11 11:30 ` Segher Boessenkool
2020-01-10 7:33 ` Maxim Kuvyrkov
2020-01-10 9:49 ` Richard Earnshaw (lists)
2020-01-10 11:38 ` Richard Biener
2020-01-10 12:09 ` Iain Sandoe
2020-01-10 13:11 ` Joseph Myers
2020-01-10 12:53 ` Nathan Sidwell
2020-01-10 14:13 ` Martin Liška
2020-01-11 11:57 ` Segher Boessenkool
2020-01-11 11:52 ` Segher Boessenkool
2020-01-10 13:31 ` Bernd Schmidt
2020-01-10 15:27 ` Eric S. Raymond
2020-01-10 15:09 ` Maxim Kuvyrkov
2020-01-10 15:16 ` Joseph Myers
2020-01-10 15:33 ` Maxim Kuvyrkov
2020-01-11 7:04 ` Gerald Pfeifer
2020-01-09 5:07 ` Jeff Law
2020-01-09 12:30 ` Joseph Myers
2020-01-10 15:27 ` Joseph Myers
2020-01-11 7:06 ` Gerald Pfeifer
2020-01-14 8:21 ` Jeff Law
2019-12-26 22:33 ` Joseph Myers
2019-12-26 19:16 ` Eric S. Raymond
2019-12-26 20:08 ` Alexandre Oliva
2019-12-26 20:28 ` Joseph Myers
2019-12-27 12:06 ` Alexandre Oliva
2019-12-27 12:21 ` Joseph Myers
2019-12-28 2:33 ` Eric S. Raymond
2019-12-26 21:19 ` Eric S. Raymond
2019-12-25 12:10 ` Segher Boessenkool
2019-12-25 14:13 ` Joseph Myers
2019-12-29 16:47 ` Mark Wielaard
2019-12-29 22:42 ` Joseph Myers
2019-12-16 16:27 ` Eric S. Raymond
2019-12-16 16:47 ` Segher Boessenkool
2019-12-16 16:04 ` Jeff Law
2019-12-16 16:37 ` Eric S. Raymond
2019-12-16 16:47 ` Jeff Law
2019-12-31 13:43 ` Joseph Myers
2019-12-31 14:13 ` Richard Earnshaw (lists)
2019-12-31 17:26 ` Segher Boessenkool
2019-12-16 13:56 ` Joseph Myers
2019-12-16 14:17 ` Mark Wielaard
2019-12-16 16:29 ` Joseph Myers
2019-12-16 13:53 ` Joseph Myers
2019-12-16 16:39 ` Jeff Law
2019-12-16 17:57 ` Richard Biener
2019-12-16 16:55 ` Jeff Law
2019-12-16 17:08 ` Joseph Myers
2019-12-16 19:15 ` Eric S. Raymond
2019-12-16 21:59 ` Segher Boessenkool
2019-12-16 22:14 ` Jeff Law
2019-12-16 22:42 ` Segher Boessenkool
2019-12-16 23:26 ` Joseph Myers
2019-12-16 23:44 ` Eric S. Raymond
2019-12-18 18:07 ` Jeff Law
2019-12-18 18:24 ` Joseph Myers
2019-12-19 0:57 ` Eric S. Raymond
2019-12-18 19:50 ` Segher Boessenkool
2019-12-18 20:43 ` Jeff Law
2019-12-20 16:28 ` Segher Boessenkool
2019-12-19 2:34 ` Unix philosopy vs. poor semantic locality Eric S. Raymond
2019-12-19 3:16 ` Joseph Myers
2019-12-19 5:46 ` Eric S. Raymond
2019-12-19 0:46 ` Proposal for the transition timetable for the move to GIT Eric S. Raymond
2019-12-16 23:34 ` Eric S. Raymond
2019-12-16 23:18 ` Joseph Myers
2019-12-16 23:19 ` Eric S. Raymond
2019-12-18 17:27 ` Segher Boessenkool
2019-12-16 13:33 ` Segher Boessenkool
2019-09-19 17:04 ` Paul Koning
2019-10-25 14:02 ` Richard Earnshaw (lists)
2019-09-20 15:49 ` Jeff Law
2019-09-21 9:11 ` Segher Boessenkool
2019-09-21 9:39 ` Andreas Schwab
2019-09-21 9:51 ` Segher Boessenkool
2019-09-21 10:04 ` Andreas Schwab
2019-09-21 9:26 ` Segher Boessenkool
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20191228022742.GB22756@thyrsus.com \
--to=esr@thyrsus.com \
--cc=Richard.Earnshaw@arm.com \
--cc=gcc@gcc.gnu.org \
--cc=jakub@redhat.com \
--cc=jsm@polyomino.org.uk \
--cc=law@redhat.com \
--cc=mark@klomp.org \
--cc=maxim.kuvyrkov@linaro.org \
--cc=oliva@gnu.org \
--cc=segher@kernel.crashing.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).