org-rss feed title is concatenation of all post titles? (ECM included)

[Stig Brautaset]

Hi,

I'm using org-rss.el to generate an RSS feed for my blog. I use a
separate file, ~feed.org~, which uses ~#+include:~ to source entries.
This works well for each item in the feed, but not for the main feed
title and feed image title, which appears to be a concatenation of the
feed and all the titles in all the items.

If I export RSS for the below ~feed.org~, the RSS title becomes:

: <title>The Feed Title Title of first post Title of second post</title>

However I *expect* it to be just:

: <title>The Feed Title</title>

The feed image title also is similarly affected:

#+begin_src xml
  <image>
    <url>https://orgmode.org/img/org-mode-unicorn-logo.png</url>
    <title>The Feed Title Title of first post Title of second post</title>
    <link></link>
  </image>
#+end_src



Below is the Org files used in this example.

feed.org:

#+begin_src org
,#+title: The Feed Title
,* First Post
:PROPERTIES:
:RSS_PERMALINK: first-post.html
:END:
,#+include: first-post.org
,* Second Post
:PROPERTIES:
:RSS_PERMALINK: second-post.html
:END:
,#+include: second-post.org
#+end_src

first-post.org:

#+begin_src org
,#+title: Title of first post
First post content.
#+end_src

second-post:

#+begin_src org
,#+title: Title of second post
Second post content.
#+end_src


Software Versions:

- macOS 10.15.3
- Org mode version 9.3.2 (9.3.2-24-g5c72d6-elpaplus @ 
/Users/stig/.emacs.d/elpa/org-plus-contrib-20200203/)
- GNU Emacs 26.3 (build 1, x86_64-apple-darwin18.2.0, NS appkit-1671.20 Version 
10.14.3 (Build 18D109)) of 2019-09-02


Regards,
Stig