Re: What I need.
Reply #43 –
That page contains what it should:
<link rel="alternate" type="application/atom+xml" href="http://api.sr.se/api/rss/program/2358?format=109" title="Prenumerera på Öppet API via RSS" />
Sorry. I am being increasingly too hasty and superficial in my technological routines. I have to pull myself together

I don't know how good of an idea it would be to scan the page for links that say something like "RSS" or "feed".
I understand it's not so simple. Now I took a look (hopefully accurately) at the link that I meant and it looks like
<a href="http://api.sr.se/api/rss/group/16907" class="prkbtn prkbtn--icon">
i.e. no clue what to grab from there. Simply
rss would yield too many false positives. To look for more reliable indicators of RSS feeds would miss too many true positives. To implement a robot to verify all links to see if any of them returns an RSS feed would be both resource heavy and undesirable for other reasons. All these are worthless options.
I also took a look at how Mozilla does it, and I found that there are extensions to detect RSS links inside webpages, so apparently Mozilla actually doesn't do it out of the box, even though occasionally it seems to me that it does. Must be because I keep overlooking details.
My request was pointless. The current rule for RSS detection is okay. Sorry for bothering.