Simple HTML tags & reference document

Looking through the documentation at Mozillazine.org http://kb.mozillazine.org/Plain_text_e-mail_%28Thunderbird%29#Displaying_messages is helpful is a basic way but doesn't reference what is considered a simple html tag and what isn't.

If only says, "The third option Simple HTML isn't used as much. Its similar to the Original HTML setting but will only interpret basic HTML commands, disables Javascript, and doesn't display remote images."

But I'd like to know what Simple HTML is by definition.  Which tags are used, which are ignored.  Are all classes ignored?  Are all or some inline styles ignored?

Is there a reference document somewhere that covers this information?


Thanks in advance.
1
mwsasser
3/20/2015 2:15:45 PM
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On 03/20/2015 10:15 AM, mwsasser@gmail.com wrote:
> Looking through the documentation at Mozillazine.org http://kb.mozillazine.org/Plain_text_e-mail_%28Thunderbird%29#Displaying_messages is helpful is a basic way but doesn't reference what is considered a simple html tag and what isn't.
>
> If only says, "The third option Simple HTML isn't used as much. Its similar to the Original HTML setting but will only interpret basic HTML commands, disables Javascript, and doesn't display remote images."
>
> But I'd like to know what Simple HTML is by definition.  Which tags are used, which are ignored.  Are all classes ignored?  Are all or some inline styles ignored?
>
> Is there a reference document somewhere that covers this information?
>
>
> Thanks in advance.
>

Which tags are used? "only basic HTML commands"

What is ignored? "Javascript, remote images"

[Mail content types - MozillaZine Knowledge 
Base](http://kb.mozillazine.org/Mail_content_types#Simple_HTML)

-- 
Kubuntu 14.10 | KDE 4.14.1 | Thunderbird 38.0a2(Earlybird)
[Coexist - Understanding Across Divides](https://www.coexist.org/)
Obeying the law matters
-3
WaltS48
3/21/2015 1:18:16 AM
mwsasser@gmail.com Wrote in message:
> Looking through the documentation at Mozillazine.org http://kb.mozillazine.org/Plain_text_e-mail_%28Thunderbird%29#Displaying_messages is helpful is a basic way but doesn't reference what is considered a simple html tag and what isn't.
> 
> If only says, "The third option Simple HTML isn't used as much. Its similar to the Original HTML setting but will only interpret basic HTML commands, disables Javascript, and doesn't display remote images."
> 
> But I'd like to know what Simple HTML is by definition.  Which tags are used, which are ignored.  Are all classes ignored?  Are all or some inline styles ignored?
> 
> Is there a reference document somewhere that covers this information?
> 
> 
> Thanks in advance.
> 

I don't think there is a definition. It just meansthose tags that
 can do no harm or allow the sender to detect that you got the
 email, in case it's a scam. 
-- 
(Remove any numerics from my email address.)
2
Dave
3/21/2015 7:38:29 AM
On 2015-03-20 10:15 AM, mwsasser@gmail.com wrote:
> Looking through the documentation at Mozillazine.org http://kb.mozillazine.org/Plain_text_e-mail_%28Thunderbird%29#Displaying_messages is helpful is a basic way but doesn't reference what is considered a simple html tag and what isn't.
>
> If only says, "The third option Simple HTML isn't used as much. Its similar to the Original HTML setting but will only interpret basic HTML commands, disables Javascript, and doesn't display remote images."
>
> But I'd like to know what Simple HTML is by definition.  Which tags are used, which are ignored.  Are all classes ignored?  Are all or some inline styles ignored?
>
> Is there a reference document somewhere that covers this information?
>
>
> Thanks in advance.

There used to be a pref called 
"mailnews.display.html_sanitizer.allowed_tags", in which the default 
value was:
"html head title body p br div(lang,title) h1 h2 h3 h4 h5 h6 
ul(type,compact) ol(type,compact,start) li(type,value) dl dt dd 
blockquote(type,cite) pre noscript noframes strong em sub sup 
span(lang,title) acronym(title) abbr(title) del(title,cite,datetime) 
ins(title,cite,datetime) q(cite) a(href,name,title) 
img(alt,title,longdesc,src) base(href) area(alt) applet(alt) object(alt) 
var samp dfn address kbd code cite s strike tt b i table(align) caption 
tr(align,valign) td(rowspan,colspan,align,valign) 
th(rowspan,colspan,align,valign) wbr"

3 years ago, a new HTML5 sanitizer was implemented. I'm finding it hard 
to get the details, but the tags above should give you a pretty good 
idea of what is allowed in Simple HTML.

-- 
Chris Ilias <http://ilias.ca>
Mailing list/Newsgroup moderator
1
Chris
3/21/2015 5:05:08 PM
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