Re: [PATCH v2 3/4] config: factor out global config file retrieval

> Kristoffer Haugsbakk <code@khaugsbakk.name> writes:
>>  char *git_system_config(void);
>> +/**
>> + * Returns `NULL` if is uncertain whether or not `HOME/.gitconfig` exists.
>> + */
>
> Sorry, but I am not sure what this comment wants to say.
>
> When $HOME is not set, we do get NULL out of this function.  But
> interpolate_path() that makes git_global_config_paths() to return
> NULL in user_config does not do any existence check with stat() or
> access(), so even when we return a string that is "~/.gitconfig"
> expanded to '/home/user/.gitconfig", we are not certain if the file
> exists.  So,... it is unclear what "uncertain"ty we are talking
> about in this case.