Re: [PATCH 2/4] string-list: replace negative index encoding with "exact_match" parameter

> > index 2b438c7733..03c7009472 100644
> > --- a/string-list.h
> > +++ b/string-list.h
> > @@ -174,7 +174,7 @@ void string_list_remove_empty_items(struct string_list *list, int free_util);
> >  /** Determine if the string_list has a given string or not. */
> >  int string_list_has_string(const struct string_list *list, const char *string);
> >  int string_list_find_insert_index(const struct string_list *list, const char *string,
> > -				  int negative_existing_index);
> > +				  int *exact_match);
> >  
> 
> Makes me wonder whether we want to use `bool *exact_match` now to hint
> that this is really only a true/false value? If so, we'd also have to
> adapt the signature in the preceding commit.
>