[MlMt] Inject custom javascript into Message View

[Marco Carmosino]

For whatever it's worth, another application of javascript in MM web 
view executed on plain-text messages is rendering equations. My friends 
often send me markdown sprinkled with latex, and if I could run mathjax 
in MM web view, this would make a lot of my email _way_ more readable. 
Nicely rendered equations instead of stuff like `$g_{i,j}(z) = 
f(z|_{S_{i}})$` scattered all over would make my life a lot easier. 
Heck, this would probably help me sell a few copies of mailmate -- email 
with readable equations is a killer feature for mathematicians, and 
currently there's _no_ good solution for this anywhere.

In a perfect world, I could also render equations using mathjax in the 
preview window, so I can see my own messages with the equations rendered 
nicely as I type them.

Something to think on. Very limited audience for this kind of feature, 
but we'd be very enthusiastic.

cheers,

-- marco

On 13 Jun 2017, at 6:36, Verdon Vaillancourt wrote:

> oh god, if you can find a way to get rid of signature noise, please 
> share!
>
> On 13 Jun 2017, at 9:29, Padraic Renaghan wrote:
>
>> Totally understand not wanting to enable javascript in the message 
>> view. Certainly can't trust senders to run javascript they provide.
>>
>> Maybe there is another way to do what I am trying to accomplish...
>>
>> My company adds a ridiculous 20 line legal footer to all emails. 
>> Makes reading them noisy, especially when a thread gets a few 
>> replies, and every reply gets another 20 legal footer. So I was going 
>> to use javascript to identify those blocks and "display:hide" them.
>>
>> Is there another way to do that?
>> Any way to filter the message prior to loading it into the MM Web 
>> View?
>> Is that what the premailer is about?
>> Can I customize that?
>>
>> Thanks,
>> Padraic
>>
>> 2017-06-13 05:44 EDT from Benny Kjær Nielsen:
>>
>>> On 12 Jun 2017, at 18:59, Padraic Renaghan wrote:
>>>
>>>> What I'd really like to do is inject javascript. I tried making my 
>>>> own version of basic.js, but that didn't seem to get injected.
>>>
>>> Javascript is currently always disabled for the message view.
>>>
>>>> I did it for headers with the headersFormatting.plist using the 
>>>> prefix. This seems to work well.
>>>
>>> The HTML generated for the headers view is under my control and 
>>> therefore it is safer to allow Javascript.
>>>
>>>> Any way to do this for the main message view?
>>>
>>> Not currently.
>>>
>>>> If not, possible new advanced feature?
>>>
>>> Yes, but probably only for non-HTML emails and then I'm not sure 
>>> it's really useful. I really don't want to go into the problem of 
>>> sanitizing arbitrary HTML messages.
>>>
>>> -- 
>>> Benny
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