bug#21390: 24.5; Missing definition for predicate `buffer-or-string-p'

[Constantino Calancha]

Hi Glenn,

i dont think is needed i just find more natural to be defined than not.
Its also elegant.

There are two files that may use that predicate:

simple.el
   2856:	       (not (or (bufferp output-buffer)  (stringp  
output-buffer))))
   3118:                 (not (or (bufferp output-buffer) (stringp 
output-buffer)))))

gnus-art.el:
   2800:           ((not (or (bufferp (car handle)) (stringp (car handle)))))



On Wed, 02 Sep 2015 00:45:04 +0900, Glenn Morris <rgm@gnu.org> wrote:

> Tino Calancha wrote:
>
> > Predicate `buffer-or-string-p' is declared but definition is missing in:
> > emacs-24.5/src/data.c
>
> I guess you are referring to the fact that src/data.c contains
>
>   DEFSYM (Qbuffer_or_string_p, "buffer-or-string-p")
>
> This is used in CHECK_STRING_OR_BUFFER in textprop.c.
> The simple presence of the DEFSYM is not by itself motivation for the
> addition of a "buffer-or-string-p" predicate.
>
> If you think such a thing is needed, you need to eg show how many places
> in the current lisp sources would use it. And then if added it needs to
> be documented too.