Add setup check to avoid git version 2.5.0 and below (May 2015)
Summary:
After this change, if you have a deprecated git version,
now you see a related information config warning:
{F276840}
Having said that the git version 1.8.3.1 - that for example
is provided by CentOS 7 - is surely problematic;
Some sources indicate all git versions *before* 2.5.0 as not
able to handle the '--' escape argument. The '--' arg
is used to separate normal git flags from user arguments,
so that they cannot be mistakenly exchanged. Kind of:
git <flags> -- <arguments>
The problem is, Phabricator/Phorge at the moment executes
this kind of git commands when you surf a git repository from
the web interface:
git cat-file -t -- <hash>:<file>
But, if your git version does not support "--", you can
get yourself into unhappy situations since "--" could be
just interpreted as a "wrong value", causing other
considerations and misleading exceptions, such as:
This path was a submodule at <repo>:<hash>
If you have seen the above error while surfing a git repo,
and if you have 2.5.0 or before, and if you are sure that
the mentioned path it's not a submodule, you probably
need a git update.
It is not yet clear whether Phabricator/Phorge should
support the possibility of this lack of support for "--".
In the meanwhile, just update your git on the server.
AFAIK no particular version is required on your clients.
Related information:
- https://unix.stackexchange.com/a/740621/85666
- https://github.com/git/git/commit/b48158ac94cf725834b70b4a5ab7f2d152a741d4
If you disagree, please do not simply ignore the
warning but share your experience in the Task.
Ref T15179
Test Plan:
- open Phorge, you see no warnings since you are already up to date. Nice.
- Otherwise, you see a nice config message, and you can ignore it as usual.
Reviewers: O1 Blessed Committers, Cigaryno, avivey
Reviewed By: O1 Blessed Committers, Cigaryno, avivey
Subscribers: avivey, speck, tobiaswiese, Matthew, Cigaryno
Maniphest Tasks: T15179
Differential Revision: https://we.phorge.it/D25089