After this change, if you have a deprecated git version,
now you see a related information config warning:
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
You can have PHP do the type checking, but I'm not sure that this is needed - phutil_implode_html already accepts unsafe strings and converts them to safe html.