From owner-freebsd-ports@freebsd.org  Tue Apr 18 01:46:24 2017
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Date: Tue, 18 Apr 2017 01:46:11 +0000
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From: "Thomas Mueller" <mueller6722@twc.com>
To: freebsd-ports@freebsd.org 
CC: rea@freebsd.org
Subject: www/xombrero status: appears to be discontinued upstream
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I find on Wikipedia (https://en.wikipedia.org/wiki/Xombrero) that Xombrero web browser has been discontinued:

In early 2017, it appeared the project was likely to be discontinued, as xombrero depended on an old version of WebKit which had multiple security vulnerabilities, and a port to a modern version of WebKit would be difficult.[16][2] Due to these issues,[3] OpenBSD removed xombrero from its ports tree on 1 February 2017.[17]

I could not reach Xombrero's website
MASTER_SITES=   https://opensource.conformal.com/snapshots/xombrero/

I checked on Github and indeed found that work on Xombrero had ceased:

xombrero has been retired and is no longer under development and supported. 

So it looks like www/xombrero is a candidate for deletion from FreeBSD ports?

Tom