On 7/16/2016 12:35 PM, Paul B. Gallagher wrote [in part]:

        [snipped]

> The chief purpose of the angle brackets is delineation -- to tell the 
> receiving application "the URL begins here... and ends here." AFAIK they 
> don't tell it "this is a URL." For that, you need either an HTML message 
> (which supports hyperlinks), or a receiving application like SeaMonkey 
> that recognizes URLs and email addresses and makes them clickable. And 
> yes, including "http://"; does help some apps in their recognition 
> process. Similarly, many diagnose mail links whenever they see the 
> character "@" -- this@that will probably be clickable when SM receives 
> this message.

Actually, the use of the < and > as brackets is for humans.  This is so
a human user can tell how much to copy and then paste into a browser's
address area.

The presence of http:// or https:// (or some other indication of an
Iternet protocol such as FTP://) is more important to applications than
the brackets.


> Anyway, the point of plain text is that by definition it doesn't have 
> hyperlinks. So if you want to guarantee clickability, use HTML.

That is not necessarily true.  About 20 years ago, Eudora Lite
recognized URIs in plain-text messages.  On the other hand, AOL's
proprietary E-mail application did not; I do not know if AOL ever fixed
that since I never use AOL.

-- 
David E. Ross
<http://www.rossde.com/>.

Is it true that Donald Trump refuses to reveal his
income tax returns because he uses so many questionable
loopholes that he pays no taxes?  See
<http://www.thedailybeast.com/articles/2016/06/15/new-evidence-donald-trump-didn-t-pay-taxes.html>.
 Even if those
loopholes are legal, Trump might be too embarrassed to
admit he pays no taxes.
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