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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.help
Subject: Re: browse-url default browser
Date: Wed, 05 Apr 2017 18:50:04 +0300
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In-reply-to: <oc27mc$2fd$1@blaine.gmane.org> (message from Florian Lindner on
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> From: Florian Lindner <mailinglists@xgm.de>
> Date: Wed, 5 Apr 2017 09:51:47 +0200
> 
> Why is xdg-open only used in Gnome, KDE, Xfce or LXDE? I'm using i3 and xdg-open works like it should.
> 
> Of course, I can set (setq browse-url-browser-function 'browse-url-default-browser) but I wonder why the defaults are
> that way?

There's a long story behind this, but the important part is that the
function was heavily modified on the master branch, and no longer
limits the xdg applicability to only the above environments.