Re: Elisp string function question

[Emanuel Berg via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org>]

>>
>> Thanks for mentioning `string-empty-p' BTW, didn't know of
>> that, now I can remove my own `empty-string-p' :P
>>
>> (which shows the same bahavior BTW)
>
> No, it doesn't, why did I ever remove it? I thought it was the
> same as this but it wasn't, (string-empty-p nil) should be
> t according to the way I've been using it! Christ, no wonder
> nothing works all of a sudden.

What I want is

(defun string-data-p (str)
  (and (stringp str)
       (not (string= str "")) ))

Is it a string?

Does it have data?

nil and "" is (here) just as useless.

But the funny thing is, my "empty-string-p" looked like
`string-empty-p', that's why I replaced the calls to that
instead. Then everything broke. So I guess it didn't look
quite like that after all...

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