Re: [BUG] submodule config does not apply to upper case submodules?

> On Wed, Feb 15, 2017 at 3:37 PM, Junio C Hamano <gitster@pobox.com> wrote:
>> Stefan Beller <sbeller@google.com> writes:
>>
>>> Yes; though I'd place it in strbuf.{c,h} as it is operating
>>> on the internals of the strbuf. (Do we make any promises outside of
>>> strbuf about the internals? I mean we use .buf all the time, so maybe
>>> I am overly cautious here)
>>
>> I'd rather have it not use struct strbuf as an interface.  It only
>> needs to pass "char *" and its promise that it touches the string
>> in-place without changing the length need to be documented as a
>> comment before the function.
>>
>>>>  config.c | 16 +++++++++++++++-
>>>>  1 file changed, 15 insertions(+), 1 deletion(-)
>>>>
>>>> diff --git a/config.c b/config.c
>>>> index c6b874a7bf..98bf8fee32 100644
>>>> --- a/config.c
>>>> +++ b/config.c
>>>> @@ -201,6 +201,20 @@ void git_config_push_parameter(const char *text)
>>>>         strbuf_release(&env);
>>>>  }
>>>>
>>>> +static void canonicalize_config_variable_name(struct strbuf *var)
>>>> +{
>>>> +       char *first_dot = strchr(var->buf, '.');
>>>> +       char *last_dot = strrchr(var->buf, '.');
>>>
>>> If first_dot != NULL, then last_dot !+ NULL as well.
>>> (either both are NULL or none of them),
>>> so we can loose one condition below.
>>
>> I do not think it is worth it, though.
>>
>>>> +       char *cp;
>>>> +
>>>> +       if (first_dot)
>>>> +               for (cp = var->buf; *cp && cp < first_dot; cp++)
>>>> +                       *cp = tolower(*cp);
>>>> +       if (last_dot)
>>>> +               for (cp = last_dot; *cp; cp++)
>>>> +                       *cp = tolower(*cp);
>>
>>         if (first_dot) {
>>                 scan up to first dot
>>                 if (last_dot)
>
> just leave out the 'if (last_dot)' ?
>
>     if (first_dot)  {
>         /* also implies last_dot */
>         do 0 -> first
>         do last -> end
>     }