GNU bug report logs - #27744
CSS whitespace:pre not supported

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Message #5 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Geoff Kuenning <geoff <at> cs.hmc.edu>
To: submit <at> debbugs.gnu.org (The Gnus Bugfixing Girls + Boys)
Subject: CSS whitespace:pre not supported
Date: Mon, 17 Jul 2017 14:45:20 -0700

[Message part 1 (text/plain, inline)]

The "wash html" function in Gnus doesn't seem to support the 
whitespace:pre CSS style.  I've attached a sample message in 
multipart/mixed format that contains HTML using whitespace:pre. 
If you save the HTML portion in a file and view it with a browser, 
you'll see that the patched code is properly indented.  OTOH if 
you view it in Gnus with "W h", there will be no indentation.

(Note: the plain-text version of the message is also improperly 
indented, but that's a bug at the sender end, not with Gnus.)



Gnus v5.13
GNU Emacs 24.3.1 (x86_64-suse-linux-gnu, GTK+ Version 3.16.7)
of 2017-01-05 on cloud112

-- 
   Geoff Kuenning   geoff <at> cs.hmc.edu 
   http://www.cs.hmc.edu/~geoff/

XML: verbose obfuscation in the service of simple key-value pairs.

[whitespacepre (application/octet-stream, attachment)]

Message #8 received at 27744 <at> debbugs.gnu.org (full text, mbox):

From: Lars Ingebrigtsen <larsi <at> gnus.org>
To: Geoff Kuenning <geoff <at> cs.hmc.edu>
Cc: 27744 <at> debbugs.gnu.org
Subject: Re: bug#27744: CSS whitespace:pre not supported
Date: Thu, 12 Apr 2018 21:05:40 +0200

Geoff Kuenning <geoff <at> cs.hmc.edu> writes:

> The "wash html" function in Gnus doesn't seem to support the
> whitespace:pre CSS style.  I've attached a sample message in
> multipart/mixed format that contains HTML using whitespace:pre. If you
> save the HTML portion in a file and view it with a browser, you'll see
> that the patched code is properly indented.  OTOH if you view it in
> Gnus with "W h", there will be no indentation.

shr (which Gnus uses to render HTML) understands only a minuscule subset
of CSS.  white-space: pre; is not something it supports, and isn't very
likely to support in the near future.  It's rather obscure, and there
are plenty of lower-hanging fruit for people who want to make it render
more stuff.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no

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