Re: [PATCH v5 1/2] branch: accept multiple upstream branches for tracking

> Ævar Arnfjörð Bjarmason <avarab@gmail.com> writes:
>
>> On Thu, Dec 09 2021, Glen Choo wrote:
>>
>>> Josh Steadmon <steadmon@google.com> writes:
>>>
>>>>> > @@ -121,11 +168,18 @@ int install_branch_config(int flag, const char *local, const char *origin, const
>>>>> >  	advise(_(tracking_advice),
>>>>> >  	       origin ? origin : "",
>>>>> >  	       origin ? "/" : "",
>>>>> > -	       shortname ? shortname : remote);
>>>>> > +	       remotes->items[0].string);
>>>>> >  
>>>>> >  	return -1;
>>>>> >  }
>>>>> 
>>>>> When there is more than one item in remotes->items, this advice is
>>>>> _technically_ incorrect because --set-upstream-to only takes a single
>>>>> upstream branch. I think that supporting multiple upstreams in
>>>>> --set-upstream-to is a fairly niche use case and is out of scope of this
>>>>> series, so let's not pursue that option.
>>>>> 
>>>>> Another option would be to replace the mention of --set-upstream-to with
>>>>> "git config add", but that's unfriendly to the >90% of the user
>>>>> population that doesn't want multiple merge entries.
>>>>> 
>>>>> If we leave the advice as-is, even though it is misleading, a user who
>>>>> is sophisticated enough to set up multiple merge entries should also
>>>>> know that --set-upstream-to won't solve their problems, and would
>>>>> probably be able to fix their problems by mucking around with
>>>>> .git/config or git config.
>>>>> 
>>>>> So I think it is ok to not change the advice and to only mention the
>>>>> first merge item. However, it might be worth marking this as NEEDSWORK
>>>>> so that subsequent readers of this file understand that this advice is
>>>>> overly-simplistic and might be worth fixing.
>>>>
>>>> Sounds like we should just have separate advice strings for single vs.
>>>> multiple merge configs?
>>>
>>> That sounds like a good idea if it's not too much work. Otherwise, a
>>> NEEDSWORK is still acceptable to me (but that said, I'm not an authority
>>> on this matter).
>>
>> We haven't used Q_() with advise() yet, but there's no reason not to:
>>
>> 	advise(Q_("fix your branch by doing xyz",
>> 		  "fix your branches by doing xyz",
>>                   branches_nr));
>
> Neat, that should do it in most cases. I think this one is a little
> trickier because the plural advice messages requires constructing a
> list, e.g.
>
> Singular: 
>   "\n"
>   "After fixing the error cause you may try to fix up\n"
>   "the remote tracking information by invoking\n"
>   "\"git branch --set-upstream-to=%s%s%s\"."
>
> Plural:
>   "\n"
>   "After fixing the error cause you may try to fix up\n"
>   "the remote tracking information by invoking\n"
>   "\"git config --add my_new_remote remote_name\"
>   "\"git config --add my_new_upstream1 upstream_name1\"
>   "\"git config --add my_new_upstream2 upstream_name2\"
>
> But perhaps this is not too hard since you've already included examples
> of how to format lists of strings [1]
>
> [1] https://lore.kernel.org/git/211207.86mtlcpyu4.gmgdl@evledraar.gmail.com