Re: [PATCH v2 4/7] quote_path: code clarification

> On Thu, Sep 10, 2020 at 10:01:56AM -0700, Junio C Hamano wrote:
>
>> Instead we can scan the path upfront to see if the input has SP in
>> it.  If so, we tell quote_c_style_counted() not to enclose its
>> output in a dq-pair, and we add a dq-pair ourselves.  Whether the
>> input had bytes that quote_c_style_counted() uses backslash quoting,
>> this would give us a desired quoted string.  If the input does not
>> have SP in it, we just let quote_c_style_counted() do its thing as
>> usual, which would enclose the result in a dq-pair only when needed.
>
> Nice. I think the result is easier to follow than the original, not to
> mention more efficient. And the fact that we didn't need to touch
> quote_c_style_counted() is the cherry on top.
>
>> +	int force_dq = ((flags & QUOTE_PATH_QUOTE_SP) && strchr(rel, ' '));
>> [...]
>> +	quote_c_style_counted(rel, strlen(rel), out, NULL, !!force_dq);
>
> I think force_dq is already normalized to 0/1 by the &&, so we wouldn't
> need the "!!" here.