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Re: Moving to git
- From: Richard Earnshaw <Richard dot Earnshaw at foss dot arm dot com>
- To: Jonathan Wakely <jwakely dot gcc at gmail dot com>, Eric Raymond <esr at thyrsus dot com>
- Cc: Jakub Jelinek <jakub at redhat dot com>, Jason Merrill <jason at redhat dot com>, Jeff Law <law at redhat dot com>, "gcc at gcc dot gnu dot org" <gcc at gcc dot gnu dot org>
- Date: Mon, 24 Aug 2015 15:06:21 +0100
- Subject: Re: Moving to git
- Authentication-results: sourceware.org; auth=none
- References: <55D61512 dot 8010002 at redhat dot com> <55D61B23 dot 3000309 at redhat dot com> <55D63403 dot 4000603 at redhat dot com> <20150824081741 dot GB9425 at tucnak dot redhat dot com> <CAH6eHdSqG4Y0g7cKjRhwQ=Rv1Syypug0s2v0D118RMeSAzjrFw at mail dot gmail dot com> <20150824104227 dot GA14607 at thyrsus dot com> <CAH6eHdT++R8JuemyJY2yHK1zNVa1J_8gJ+v6G8mxtwd+Q9hxXg at mail dot gmail dot com>
On 24/08/15 12:43, Jonathan Wakely wrote:
> On 24 August 2015 at 11:42, Eric S. Raymond wrote:
>> Jonathan Wakely <firstname.lastname@example.org>:
>>> On 24 August 2015 at 09:17, Jakub Jelinek wrote:
>>>> The revision ids are also useful for bugzilla, r123456
>>>> links in text pointing to http://gcc.gnu.org/r123456 is significantly
>>> The first six characters of the sha1 is usually enough to
>>> unambiguously identify a commit, so we could easily have
>>> https://gcc.gnu.org/git/f00baa or something similar, if we don't use
>>> git-notes to add a revision to the commits.
>> I recommend *against* using hashes to identify commits. Here's what I said
>> about it in the NTPsec developers guidelines.
>> === How to refer to previous commits ===
>> The best (most human-friendly) way to reference a commit is by quoting its
>> summary line. If you need to disambiguate, give its date and author.
> That doesn't really work if we want Bugzilla to automatically turn
> something that looks like a reference to a commit into a hyperlink.
> Currently I can say "caused by r227043" in a bugzilla comment and it
> links to the relevant commit. I don't really want to have to say
> "caused by libstdc++/67294 Don't run timed mutex tests on Darwin" or
> "caused by
> Author: Jonathan Wakely <email@example.com>
> Date: Thu Aug 20 20:36:19 2015 +0000
> It's pretty simple for Bugzilla to look for "r\d+" in comments and
> create a hyperlink to https://gcc.gnu.org/\1 without accessing the
> repository at all. It would not be practical (for every bugzilla
> comment) to search the repo for "libstdc++/67294 Don't run timed mutex
> tests on Darwin" to identify a specific commit and create a link to
Something like 'git:<short-hash>' ought to be easy enough to write into
BZ (you normally cut-and-paste in this sort of case, anyway) and should
be trivial to write a scanner for. It's not like these numbers really
have to be ascending in this case.
>> The worst way is to quote its git hash, because humans are not good at
>> keeping random strings of hex digits in working memory. Besides, hashes
>> will break if the history is ever moved to another VCS or the repository
>> has to be surgically altered.
> We have that situation now with the subversion commit IDs we refer to
> in Bugzilla, that doesn't mean it isn't useful.