Re: empty-directory predicate, native implementation

[Arthur Miller]

Michael Albinus <michael.albinus@gmx.de> writes:

> Arthur Miller <arthur.miller@live.com> writes:
>
> Hi Arthur,
>
>> This isn't any kind of drammatic difference for most use; file I/O
>> is dominated by disk access anyway, but i still don't like to spend cpu
>> on unnecessary evaluations, so I wonder if we could get native predicate
>> in elisp?
>
> I don't know whether we will add this function, but in case of: you
> shall call a file name handler first. See for example Fdirectory_files.
>
> Best regards, Michael.
Thanks for looking at this.

I have seen in the source code calls to Ffind_file_handler, and have
been looking at the function in fileio.c, but I didn't figured out what
it really does, so I didn't use it. I tested without and it worked fine
:-). Anyway, I have added it now, but I am not sure if I using it
correctly, since I am not sure what it does.

By the way, what are "special constructs" referred to in the comment?

dired.patch
Description: dired.c patch