Re: [PATCH] Fix a small flaw in the comment of strmap.h

[dyrone teng <dyroneteng@gmail.com>]

>The original is correct; this function returns a non-zero value if
>and only if (iff is a common abbreviation for this expression) "str"
>is in the map, implying that when "str" is not in the map, the
>caller can rest assured that the function will not return a non-zero
>value (in other words, the caller is guaranteed to receive zero).

>If you change that to "if", the comment no longer says what happens
>when "str" is *not* present in the map, which is making it worse.

Thanks, got it.

Junio C Hamano <gitster@pobox.com> 于2021年5月6日周四 下午4:46写道：
>
> Teng Long <dyroneteng@gmail.com> writes:
>
> > Subject: Re: [PATCH] Fix a small flaw in the comment of strmap.h
>
> cf. Documentation/SubmittingPatches::summary-section
>
> > Signed-off-by: Teng Long <dyroneteng@gmail.com>
> > ---
> >  strmap.h | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> >
> > diff --git a/strmap.h b/strmap.h
> > index 1e152d832d..0d1d00d14e 100644
> > --- a/strmap.h
> > +++ b/strmap.h
> > @@ -78,7 +78,7 @@ struct strmap_entry *strmap_get_entry(struct strmap *map, const char *str);
> >  void *strmap_get(struct strmap *map, const char *str);
> >
> >  /*
> > - * Return non-zero iff "str" is present in the map. This differs from
> > + * Return non-zero if "str" is present in the map. This differs from
>
> The original is correct; this function returns a non-zero value if
> and only if (iff is a common abbreviation for this expression) "str"
> is in the map, implying that when "str" is not in the map, the
> caller can rest assured that the function will not return a non-zero
> value (in other words, the caller is guaranteed to receive zero).
>
> If you change that to "if", the comment no longer says what happens
> when "str" is *not* present in the map, which is making it worse.