bug#33179: 26; Doc string of `filter-buffer-substring'

[Eli Zaretskii]

> From: Noam Postavsky <npostavs@gmail.com>
> Cc: Eli Zaretskii <eliz@gnu.org>,  33179@debbugs.gnu.org
> Date: Sat, 27 Oct 2018 15:32:50 -0400
> 
> For what it's worth, I read it like Drew does.  I also think giving
> "characters" as an example doesn't make much sense, because I can't
> really think of characters so "special to a buffer" that they "should
> not be copied into other buffers".  Grepping the Emacs source, the only
> example usage I found was in org-indent.el, which uses it to exclude
> text properties, so I propose changing the docstring example
> accordingly.
> 
> >From c0cbc1cb7d5bbb0942a76781c1ed29d1346e5644 Mon Sep 17 00:00:00 2001
> From: Noam Postavsky <npostavs@gmail.com>
> Date: Sat, 27 Oct 2018 15:27:45 -0400
> Subject: [PATCH v1] * lisp/simple.el (filter-buffer-substring): Clarify doc
>  (Bug#33179).

This patch is fine with me, thanks.