Re: [PATCH 2/3] add new Git::Repo API

[Lea Wiemann <lewiemann@gmail.com>]

Jakub Narebski wrote:
> Git->output_pipe('ls-remotes', $URL, '--heads');

I'd make it cmd => ['ls-remotes', $URL, '--heads'] to avoid making the
interface inflexible, and perhaps add a git_binary option to specify the
binary path.  (Not that I'm suggesting something like this should be
added right now; but perhaps it'll be needed at some point.)

> I think that the solution might be some output_pipe option on how to
> treat command exit status, command STDERR, and errors when invoking
> command (for example command not found).

You read my design notes about error handling at the top of
<487BD0F3.2060508@gmail.com>, and you noticed there's max_exit_code in
cmd_output?  With the approach to error handling I described, open/exit
errors can cause the method to die, and stderr can be ignored.

If you're trying to implement a more sophisticated error handling
approach, be warned that you're opening a can of worms. ;)  If you're
aiming for something like that, it should be kept out of Git::Repo
(which has very coherent error handling as-is), and preferably be
discussed under a separate subject, since it's way beyond the scope of
this patch.